1b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Copyright (c) 2012 The Chromium Authors. All rights reserved. 2b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Use of this source code is governed by a BSD-style license that can be 3b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// found in the LICENSE file under third_party_mods/chromium or at: 4b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// http://src.chromium.org/svn/trunk/src/LICENSE 5b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 6b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#ifndef WEBRTC_SYSTEM_WRAPPERS_INTERFACE_TRACE_EVENT_H_ 7b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define WEBRTC_SYSTEM_WRAPPERS_INTERFACE_TRACE_EVENT_H_ 8b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 9b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#include <string> 10b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 11b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#include "webrtc/system_wrappers/interface/event_tracer.h" 12b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 13b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#if defined(TRACE_EVENT0) 14b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#error "Another copy of trace_event.h has already been included." 15b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#endif 16b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 17b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Extracted from Chromium's src/base/debug/trace_event.h. 18b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 19b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// This header is designed to give you trace_event macros without specifying 20b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// how the events actually get collected and stored. If you need to expose trace 21b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// event to some other universe, you can copy-and-paste this file, 22b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// implement the TRACE_EVENT_API macros, and do any other necessary fixup for 23b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// the target platform. The end result is that multiple libraries can funnel 24b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// events through to a shared trace event collector. 25b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 26b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Trace events are for tracking application performance and resource usage. 27b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Macros are provided to track: 28b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Begin and end of function calls 29b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Counters 30b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// 31b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Events are issued against categories. Whereas LOG's 32b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// categories are statically defined, TRACE categories are created 33b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// implicitly with a string. For example: 34b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// TRACE_EVENT_INSTANT0("MY_SUBSYSTEM", "SomeImportantEvent") 35b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// 36b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Events can be INSTANT, or can be pairs of BEGIN and END in the same scope: 37b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// TRACE_EVENT_BEGIN0("MY_SUBSYSTEM", "SomethingCostly") 38b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// doSomethingCostly() 39b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// TRACE_EVENT_END0("MY_SUBSYSTEM", "SomethingCostly") 40b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Note: our tools can't always determine the correct BEGIN/END pairs unless 41b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// these are used in the same scope. Use ASYNC_BEGIN/ASYNC_END macros if you 42b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// need them to be in separate scopes. 43b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// 44b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// A common use case is to trace entire function scopes. This 45b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// issues a trace BEGIN and END automatically: 46b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// void doSomethingCostly() { 47b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// TRACE_EVENT0("MY_SUBSYSTEM", "doSomethingCostly"); 48b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// ... 49b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// } 50b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// 51b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Additional parameters can be associated with an event: 52b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// void doSomethingCostly2(int howMuch) { 53b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// TRACE_EVENT1("MY_SUBSYSTEM", "doSomethingCostly", 54b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// "howMuch", howMuch); 55b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// ... 56b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// } 57b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// 58b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// The trace system will automatically add to this information the 59b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// current process id, thread id, and a timestamp in microseconds. 60b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// 61b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// To trace an asynchronous procedure such as an IPC send/receive, use 62b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// ASYNC_BEGIN and ASYNC_END: 63b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// [single threaded sender code] 64b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// static int send_count = 0; 65b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// ++send_count; 66b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// TRACE_EVENT_ASYNC_BEGIN0("ipc", "message", send_count); 67b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Send(new MyMessage(send_count)); 68b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// [receive code] 69b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// void OnMyMessage(send_count) { 70b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// TRACE_EVENT_ASYNC_END0("ipc", "message", send_count); 71b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// } 72b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// The third parameter is a unique ID to match ASYNC_BEGIN/ASYNC_END pairs. 73b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// ASYNC_BEGIN and ASYNC_END can occur on any thread of any traced process. 74b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Pointers can be used for the ID parameter, and they will be mangled 75b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// internally so that the same pointer on two different processes will not 76b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// match. For example: 77b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// class MyTracedClass { 78b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// public: 79b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// MyTracedClass() { 80b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// TRACE_EVENT_ASYNC_BEGIN0("category", "MyTracedClass", this); 81b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// } 82b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// ~MyTracedClass() { 83b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// TRACE_EVENT_ASYNC_END0("category", "MyTracedClass", this); 84b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// } 85b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// } 86b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// 87b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Trace event also supports counters, which is a way to track a quantity 88b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// as it varies over time. Counters are created with the following macro: 89b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// TRACE_COUNTER1("MY_SUBSYSTEM", "myCounter", g_myCounterValue); 90b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// 91b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Counters are process-specific. The macro itself can be issued from any 92b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// thread, however. 93b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// 94b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Sometimes, you want to track two counters at once. You can do this with two 95b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// counter macros: 96b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// TRACE_COUNTER1("MY_SUBSYSTEM", "myCounter0", g_myCounterValue[0]); 97b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// TRACE_COUNTER1("MY_SUBSYSTEM", "myCounter1", g_myCounterValue[1]); 98b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Or you can do it with a combined macro: 99b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// TRACE_COUNTER2("MY_SUBSYSTEM", "myCounter", 100b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// "bytesPinned", g_myCounterValue[0], 101b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// "bytesAllocated", g_myCounterValue[1]); 102b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// This indicates to the tracing UI that these counters should be displayed 103b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// in a single graph, as a summed area chart. 104b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// 105b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Since counters are in a global namespace, you may want to disembiguate with a 106b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// unique ID, by using the TRACE_COUNTER_ID* variations. 107b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// 108b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// By default, trace collection is compiled in, but turned off at runtime. 109b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Collecting trace data is the responsibility of the embedding 110b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// application. In Chrome's case, navigating to about:tracing will turn on 111b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// tracing and display data collected across all active processes. 112b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// 113b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// 114b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Memory scoping note: 115b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Tracing copies the pointers, not the string content, of the strings passed 116b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// in for category, name, and arg_names. Thus, the following code will 117b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// cause problems: 118b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// char* str = strdup("impprtantName"); 119b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// TRACE_EVENT_INSTANT0("SUBSYSTEM", str); // BAD! 120b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// free(str); // Trace system now has dangling pointer 121b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// 122b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// To avoid this issue with the |name| and |arg_name| parameters, use the 123b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// TRACE_EVENT_COPY_XXX overloads of the macros at additional runtime overhead. 124b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Notes: The category must always be in a long-lived char* (i.e. static const). 125b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// The |arg_values|, when used, are always deep copied with the _COPY 126b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// macros. 127b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// 128b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// When are string argument values copied: 129b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// const char* arg_values are only referenced by default: 130b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// TRACE_EVENT1("category", "name", 131b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// "arg1", "literal string is only referenced"); 132b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Use TRACE_STR_COPY to force copying of a const char*: 133b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// TRACE_EVENT1("category", "name", 134b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// "arg1", TRACE_STR_COPY("string will be copied")); 135b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// std::string arg_values are always copied: 136b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// TRACE_EVENT1("category", "name", 137b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// "arg1", std::string("string will be copied")); 138b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// 139b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// 140b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Thread Safety: 141b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Thread safety is provided by methods defined in event_tracer.h. See the file 142b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// for details. 143b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 144b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 145b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// By default, const char* argument values are assumed to have long-lived scope 146b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// and will not be copied. Use this macro to force a const char* to be copied. 147b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_STR_COPY(str) \ 148eba530a8f23372088647f102e91ceb78628f2cb8hclam@chromium.org webrtc::trace_event_internal::TraceStringWithCopy(str) 149b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 150b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// By default, uint64 ID argument values are not mangled with the Process ID in 151b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// TRACE_EVENT_ASYNC macros. Use this macro to force Process ID mangling. 152b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_ID_MANGLE(id) \ 153eba530a8f23372088647f102e91ceb78628f2cb8hclam@chromium.org webrtc::trace_event_internal::TraceID::ForceMangle(id) 154b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 155b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Records a pair of begin and end events called "name" for the current 156b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// scope, with 0, 1 or 2 associated arguments. If the category is not 157b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// enabled, then this does nothing. 158b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// - category and name strings must have application lifetime (statics or 159b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// literals). They may not include " chars. 160b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT0(category, name) \ 161b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_SCOPED(category, name) 162b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT1(category, name, arg1_name, arg1_val) \ 163b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_SCOPED(category, name, arg1_name, arg1_val) 164b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT2(category, name, arg1_name, arg1_val, arg2_name, arg2_val) \ 165b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_SCOPED(category, name, arg1_name, arg1_val, \ 166b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg2_name, arg2_val) 167b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 168b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Same as TRACE_EVENT except that they are not included in official builds. 169b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#ifdef OFFICIAL_BUILD 170b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define UNSHIPPED_TRACE_EVENT0(category, name) (void)0 171b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define UNSHIPPED_TRACE_EVENT1(category, name, arg1_name, arg1_val) (void)0 172b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define UNSHIPPED_TRACE_EVENT2(category, name, arg1_name, arg1_val, \ 173b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg2_name, arg2_val) (void)0 174b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define UNSHIPPED_TRACE_EVENT_INSTANT0(category, name) (void)0 175b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define UNSHIPPED_TRACE_EVENT_INSTANT1(category, name, arg1_name, arg1_val) \ 176b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org (void)0 177b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define UNSHIPPED_TRACE_EVENT_INSTANT2(category, name, arg1_name, arg1_val, \ 178b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg2_name, arg2_val) (void)0 179b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#else 180b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define UNSHIPPED_TRACE_EVENT0(category, name) \ 181b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org TRACE_EVENT0(category, name) 182b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define UNSHIPPED_TRACE_EVENT1(category, name, arg1_name, arg1_val) \ 183b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org TRACE_EVENT1(category, name, arg1_name, arg1_val) 184b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define UNSHIPPED_TRACE_EVENT2(category, name, arg1_name, arg1_val, \ 185b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg2_name, arg2_val) \ 186b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org TRACE_EVENT2(category, name, arg1_name, arg1_val, arg2_name, arg2_val) 187b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define UNSHIPPED_TRACE_EVENT_INSTANT0(category, name) \ 188b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org TRACE_EVENT_INSTANT0(category, name) 189b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define UNSHIPPED_TRACE_EVENT_INSTANT1(category, name, arg1_name, arg1_val) \ 190b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org TRACE_EVENT_INSTANT1(category, name, arg1_name, arg1_val) 191b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define UNSHIPPED_TRACE_EVENT_INSTANT2(category, name, arg1_name, arg1_val, \ 192b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg2_name, arg2_val) \ 193b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org TRACE_EVENT_INSTANT2(category, name, arg1_name, arg1_val, \ 194b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg2_name, arg2_val) 195b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#endif 196b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 197b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Records a single event called "name" immediately, with 0, 1 or 2 198b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// associated arguments. If the category is not enabled, then this 199b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// does nothing. 200b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// - category and name strings must have application lifetime (statics or 201b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// literals). They may not include " chars. 202b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_INSTANT0(category, name) \ 203b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_INSTANT, \ 204b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, TRACE_EVENT_FLAG_NONE) 205b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_INSTANT1(category, name, arg1_name, arg1_val) \ 206b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_INSTANT, \ 207b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val) 208b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_INSTANT2(category, name, arg1_name, arg1_val, \ 209b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg2_name, arg2_val) \ 210b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_INSTANT, \ 211b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val, \ 212b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg2_name, arg2_val) 213b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_COPY_INSTANT0(category, name) \ 214b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_INSTANT, \ 215b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, TRACE_EVENT_FLAG_COPY) 216b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_COPY_INSTANT1(category, name, arg1_name, arg1_val) \ 217b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_INSTANT, \ 218b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, TRACE_EVENT_FLAG_COPY, arg1_name, arg1_val) 219b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_COPY_INSTANT2(category, name, arg1_name, arg1_val, \ 220b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg2_name, arg2_val) \ 221b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_INSTANT, \ 222b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, TRACE_EVENT_FLAG_COPY, arg1_name, arg1_val, \ 223b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg2_name, arg2_val) 224b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 225b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Records a single BEGIN event called "name" immediately, with 0, 1 or 2 226b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// associated arguments. If the category is not enabled, then this 227b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// does nothing. 228b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// - category and name strings must have application lifetime (statics or 229b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// literals). They may not include " chars. 230b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_BEGIN0(category, name) \ 231b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_BEGIN, \ 232b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, TRACE_EVENT_FLAG_NONE) 233b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_BEGIN1(category, name, arg1_name, arg1_val) \ 234b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_BEGIN, \ 235b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val) 236b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_BEGIN2(category, name, arg1_name, arg1_val, \ 237b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg2_name, arg2_val) \ 238b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_BEGIN, \ 239b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val, \ 240b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg2_name, arg2_val) 241b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_COPY_BEGIN0(category, name) \ 242b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_BEGIN, \ 243b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, TRACE_EVENT_FLAG_COPY) 244b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_COPY_BEGIN1(category, name, arg1_name, arg1_val) \ 245b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_BEGIN, \ 246b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, TRACE_EVENT_FLAG_COPY, arg1_name, arg1_val) 247b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_COPY_BEGIN2(category, name, arg1_name, arg1_val, \ 248b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg2_name, arg2_val) \ 249b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_BEGIN, \ 250b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, TRACE_EVENT_FLAG_COPY, arg1_name, arg1_val, \ 251b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg2_name, arg2_val) 252b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 253b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Records a single END event for "name" immediately. If the category 254b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// is not enabled, then this does nothing. 255b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// - category and name strings must have application lifetime (statics or 256b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// literals). They may not include " chars. 257b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_END0(category, name) \ 258b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_END, \ 259b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, TRACE_EVENT_FLAG_NONE) 260b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_END1(category, name, arg1_name, arg1_val) \ 261b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_END, \ 262b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val) 263b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_END2(category, name, arg1_name, arg1_val, \ 264b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg2_name, arg2_val) \ 265b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_END, \ 266b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val, \ 267b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg2_name, arg2_val) 268b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_COPY_END0(category, name) \ 269b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_END, \ 270b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, TRACE_EVENT_FLAG_COPY) 271b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_COPY_END1(category, name, arg1_name, arg1_val) \ 272b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_END, \ 273b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, TRACE_EVENT_FLAG_COPY, arg1_name, arg1_val) 274b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_COPY_END2(category, name, arg1_name, arg1_val, \ 275b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg2_name, arg2_val) \ 276b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_END, \ 277b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, TRACE_EVENT_FLAG_COPY, arg1_name, arg1_val, \ 278b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg2_name, arg2_val) 279b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 280b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Records the value of a counter called "name" immediately. Value 281b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// must be representable as a 32 bit integer. 282b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// - category and name strings must have application lifetime (statics or 283b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// literals). They may not include " chars. 284b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_COUNTER1(category, name, value) \ 285b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_COUNTER, \ 286b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, TRACE_EVENT_FLAG_NONE, \ 287b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org "value", static_cast<int>(value)) 288b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_COPY_COUNTER1(category, name, value) \ 289b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_COUNTER, \ 290b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, TRACE_EVENT_FLAG_COPY, \ 291b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org "value", static_cast<int>(value)) 292b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 293b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Records the values of a multi-parted counter called "name" immediately. 294b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// The UI will treat value1 and value2 as parts of a whole, displaying their 295b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// values as a stacked-bar chart. 296b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// - category and name strings must have application lifetime (statics or 297b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// literals). They may not include " chars. 298b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_COUNTER2(category, name, value1_name, value1_val, \ 299b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org value2_name, value2_val) \ 300b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_COUNTER, \ 301b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, TRACE_EVENT_FLAG_NONE, \ 302b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org value1_name, static_cast<int>(value1_val), \ 303b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org value2_name, static_cast<int>(value2_val)) 304b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_COPY_COUNTER2(category, name, value1_name, value1_val, \ 305b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org value2_name, value2_val) \ 306b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_COUNTER, \ 307b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, TRACE_EVENT_FLAG_COPY, \ 308b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org value1_name, static_cast<int>(value1_val), \ 309b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org value2_name, static_cast<int>(value2_val)) 310b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 311b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Records the value of a counter called "name" immediately. Value 312b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// must be representable as a 32 bit integer. 313b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// - category and name strings must have application lifetime (statics or 314b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// literals). They may not include " chars. 315b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// - |id| is used to disambiguate counters with the same name. It must either 316b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// be a pointer or an integer value up to 64 bits. If it's a pointer, the bits 317b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// will be xored with a hash of the process ID so that the same pointer on 318b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// two different processes will not collide. 319b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_COUNTER_ID1(category, name, id, value) \ 320b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_COUNTER, \ 321b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_NONE, \ 322b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org "value", static_cast<int>(value)) 323b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_COPY_COUNTER_ID1(category, name, id, value) \ 324b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_COUNTER, \ 325b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_COPY, \ 326b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org "value", static_cast<int>(value)) 327b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 328b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Records the values of a multi-parted counter called "name" immediately. 329b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// The UI will treat value1 and value2 as parts of a whole, displaying their 330b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// values as a stacked-bar chart. 331b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// - category and name strings must have application lifetime (statics or 332b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// literals). They may not include " chars. 333b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// - |id| is used to disambiguate counters with the same name. It must either 334b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// be a pointer or an integer value up to 64 bits. If it's a pointer, the bits 335b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// will be xored with a hash of the process ID so that the same pointer on 336b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// two different processes will not collide. 337b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_COUNTER_ID2(category, name, id, value1_name, value1_val, \ 338b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org value2_name, value2_val) \ 339b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_COUNTER, \ 340b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_NONE, \ 341b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org value1_name, static_cast<int>(value1_val), \ 342b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org value2_name, static_cast<int>(value2_val)) 343b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_COPY_COUNTER_ID2(category, name, id, value1_name, value1_val, \ 344b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org value2_name, value2_val) \ 345b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_COUNTER, \ 346b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_COPY, \ 347b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org value1_name, static_cast<int>(value1_val), \ 348b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org value2_name, static_cast<int>(value2_val)) 349b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 350b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 351b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Records a single ASYNC_BEGIN event called "name" immediately, with 0, 1 or 2 352b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// associated arguments. If the category is not enabled, then this 353b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// does nothing. 354b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// - category and name strings must have application lifetime (statics or 355b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// literals). They may not include " chars. 356b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// - |id| is used to match the ASYNC_BEGIN event with the ASYNC_END event. ASYNC 357b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// events are considered to match if their category, name and id values all 358b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// match. |id| must either be a pointer or an integer value up to 64 bits. If 359b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// it's a pointer, the bits will be xored with a hash of the process ID so 360b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// that the same pointer on two different processes will not collide. 361b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// An asynchronous operation can consist of multiple phases. The first phase is 362b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// defined by the ASYNC_BEGIN calls. Additional phases can be defined using the 363b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// ASYNC_STEP macros. When the operation completes, call ASYNC_END. 364b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// An ASYNC trace typically occur on a single thread (if not, they will only be 365b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// drawn on the thread defined in the ASYNC_BEGIN event), but all events in that 366b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// operation must use the same |name| and |id|. Each event can have its own 367b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// args. 368b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_ASYNC_BEGIN0(category, name, id) \ 369b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_BEGIN, \ 370b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_NONE) 371b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_ASYNC_BEGIN1(category, name, id, arg1_name, arg1_val) \ 372b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_BEGIN, \ 373b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val) 374b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_ASYNC_BEGIN2(category, name, id, arg1_name, arg1_val, \ 375b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg2_name, arg2_val) \ 376b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_BEGIN, \ 377b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_NONE, \ 378b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg1_name, arg1_val, arg2_name, arg2_val) 379b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_COPY_ASYNC_BEGIN0(category, name, id) \ 380b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_BEGIN, \ 381b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_COPY) 382b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_COPY_ASYNC_BEGIN1(category, name, id, arg1_name, arg1_val) \ 383b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_BEGIN, \ 384b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_COPY, \ 385b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg1_name, arg1_val) 386b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_COPY_ASYNC_BEGIN2(category, name, id, arg1_name, arg1_val, \ 387b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg2_name, arg2_val) \ 388b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_BEGIN, \ 389b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_COPY, \ 390b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg1_name, arg1_val, arg2_name, arg2_val) 391b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 392b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Records a single ASYNC_STEP event for |step| immediately. If the category 393b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// is not enabled, then this does nothing. The |name| and |id| must match the 394b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// ASYNC_BEGIN event above. The |step| param identifies this step within the 395b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// async event. This should be called at the beginning of the next phase of an 396b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// asynchronous operation. 397b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_ASYNC_STEP0(category, name, id, step) \ 398b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_STEP, \ 399b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_NONE, "step", step) 400b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_ASYNC_STEP1(category, name, id, step, \ 401b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg1_name, arg1_val) \ 402b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_STEP, \ 403b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_NONE, "step", step, \ 404b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg1_name, arg1_val) 405b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_COPY_ASYNC_STEP0(category, name, id, step) \ 406b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_STEP, \ 407b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_COPY, "step", step) 408b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_COPY_ASYNC_STEP1(category, name, id, step, \ 409b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg1_name, arg1_val) \ 410b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_STEP, \ 411b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_COPY, "step", step, \ 412b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg1_name, arg1_val) 413b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 414b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Records a single ASYNC_END event for "name" immediately. If the category 415b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// is not enabled, then this does nothing. 416b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_ASYNC_END0(category, name, id) \ 417b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_END, \ 418b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_NONE) 419b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_ASYNC_END1(category, name, id, arg1_name, arg1_val) \ 420b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_END, \ 421b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val) 422b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_ASYNC_END2(category, name, id, arg1_name, arg1_val, \ 423b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg2_name, arg2_val) \ 424b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_END, \ 425b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_NONE, \ 426b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg1_name, arg1_val, arg2_name, arg2_val) 427b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_COPY_ASYNC_END0(category, name, id) \ 428b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_END, \ 429b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_COPY) 430b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_COPY_ASYNC_END1(category, name, id, arg1_name, arg1_val) \ 431b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_END, \ 432b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_COPY, \ 433b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg1_name, arg1_val) 434b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_COPY_ASYNC_END2(category, name, id, arg1_name, arg1_val, \ 435b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg2_name, arg2_val) \ 436b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_ASYNC_END, \ 437b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_COPY, \ 438b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg1_name, arg1_val, arg2_name, arg2_val) 439b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 440b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 441b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Records a single FLOW_BEGIN event called "name" immediately, with 0, 1 or 2 442b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// associated arguments. If the category is not enabled, then this 443b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// does nothing. 444b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// - category and name strings must have application lifetime (statics or 445b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// literals). They may not include " chars. 446b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// - |id| is used to match the FLOW_BEGIN event with the FLOW_END event. FLOW 447b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// events are considered to match if their category, name and id values all 448b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// match. |id| must either be a pointer or an integer value up to 64 bits. If 449b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// it's a pointer, the bits will be xored with a hash of the process ID so 450b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// that the same pointer on two different processes will not collide. 451b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// FLOW events are different from ASYNC events in how they are drawn by the 452b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// tracing UI. A FLOW defines asynchronous data flow, such as posting a task 453b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// (FLOW_BEGIN) and later executing that task (FLOW_END). Expect FLOWs to be 454b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// drawn as lines or arrows from FLOW_BEGIN scopes to FLOW_END scopes. Similar 455b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// to ASYNC, a FLOW can consist of multiple phases. The first phase is defined 456b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// by the FLOW_BEGIN calls. Additional phases can be defined using the FLOW_STEP 457b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// macros. When the operation completes, call FLOW_END. An async operation can 458b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// span threads and processes, but all events in that operation must use the 459b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// same |name| and |id|. Each event can have its own args. 460b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_FLOW_BEGIN0(category, name, id) \ 461b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_BEGIN, \ 462b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_NONE) 463b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_FLOW_BEGIN1(category, name, id, arg1_name, arg1_val) \ 464b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_BEGIN, \ 465b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val) 466b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_FLOW_BEGIN2(category, name, id, arg1_name, arg1_val, \ 467b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg2_name, arg2_val) \ 468b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_BEGIN, \ 469b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_NONE, \ 470b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg1_name, arg1_val, arg2_name, arg2_val) 471b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_COPY_FLOW_BEGIN0(category, name, id) \ 472b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_BEGIN, \ 473b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_COPY) 474b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_COPY_FLOW_BEGIN1(category, name, id, arg1_name, arg1_val) \ 475b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_BEGIN, \ 476b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_COPY, \ 477b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg1_name, arg1_val) 478b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_COPY_FLOW_BEGIN2(category, name, id, arg1_name, arg1_val, \ 479b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg2_name, arg2_val) \ 480b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_BEGIN, \ 481b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_COPY, \ 482b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg1_name, arg1_val, arg2_name, arg2_val) 483b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 484b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Records a single FLOW_STEP event for |step| immediately. If the category 485b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// is not enabled, then this does nothing. The |name| and |id| must match the 486b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// FLOW_BEGIN event above. The |step| param identifies this step within the 487b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// async event. This should be called at the beginning of the next phase of an 488b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// asynchronous operation. 489b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_FLOW_STEP0(category, name, id, step) \ 490b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_STEP, \ 491b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_NONE, "step", step) 492b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_FLOW_STEP1(category, name, id, step, \ 493b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg1_name, arg1_val) \ 494b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_STEP, \ 495b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_NONE, "step", step, \ 496b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg1_name, arg1_val) 497b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_COPY_FLOW_STEP0(category, name, id, step) \ 498b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_STEP, \ 499b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_COPY, "step", step) 500b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_COPY_FLOW_STEP1(category, name, id, step, \ 501b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg1_name, arg1_val) \ 502b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_STEP, \ 503b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_COPY, "step", step, \ 504b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg1_name, arg1_val) 505b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 506b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Records a single FLOW_END event for "name" immediately. If the category 507b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// is not enabled, then this does nothing. 508b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_FLOW_END0(category, name, id) \ 509b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_END, \ 510b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_NONE) 511b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_FLOW_END1(category, name, id, arg1_name, arg1_val) \ 512b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_END, \ 513b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_NONE, arg1_name, arg1_val) 514b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_FLOW_END2(category, name, id, arg1_name, arg1_val, \ 515b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg2_name, arg2_val) \ 516b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_END, \ 517b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_NONE, \ 518b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg1_name, arg1_val, arg2_name, arg2_val) 519b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_COPY_FLOW_END0(category, name, id) \ 520b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_END, \ 521b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_COPY) 522b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_COPY_FLOW_END1(category, name, id, arg1_name, arg1_val) \ 523b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_END, \ 524b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_COPY, \ 525b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg1_name, arg1_val) 526b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_COPY_FLOW_END2(category, name, id, arg1_name, arg1_val, \ 527b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg2_name, arg2_val) \ 528b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_ADD_WITH_ID(TRACE_EVENT_PHASE_FLOW_END, \ 529b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org category, name, id, TRACE_EVENT_FLAG_COPY, \ 530b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org arg1_name, arg1_val, arg2_name, arg2_val) 531b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 532b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 533b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org//////////////////////////////////////////////////////////////////////////////// 534b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Implementation specific tracing API definitions. 535b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 536b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Get a pointer to the enabled state of the given trace category. Only 537b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// long-lived literal strings should be given as the category name. The returned 538b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// pointer can be held permanently in a local static for example. If the 539b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// unsigned char is non-zero, tracing is enabled. If tracing is enabled, 540b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// TRACE_EVENT_API_ADD_TRACE_EVENT can be called. It's OK if tracing is disabled 541b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// between the load of the tracing state and the call to 542b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// TRACE_EVENT_API_ADD_TRACE_EVENT, because this flag only provides an early out 543b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// for best performance when tracing is disabled. 544b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// const unsigned char* 545b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// TRACE_EVENT_API_GET_CATEGORY_ENABLED(const char* category_name) 546b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_API_GET_CATEGORY_ENABLED \ 547b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org webrtc::EventTracer::GetCategoryEnabled 548b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 54962b6fbb187a5f7bb74f723651b78ef0fedffd643hclam@chromium.org// Add a trace event to the platform tracing system. 55062b6fbb187a5f7bb74f723651b78ef0fedffd643hclam@chromium.org// void TRACE_EVENT_API_ADD_TRACE_EVENT( 551b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// char phase, 552b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// const unsigned char* category_enabled, 553b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// const char* name, 554b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// unsigned long long id, 555b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// int num_args, 556b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// const char** arg_names, 557b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// const unsigned char* arg_types, 558b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// const unsigned long long* arg_values, 559b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// unsigned char flags) 560b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_API_ADD_TRACE_EVENT webrtc::EventTracer::AddTraceEvent 561b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 562b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org//////////////////////////////////////////////////////////////////////////////// 563b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 564b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Implementation detail: trace event macros create temporary variables 565b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// to keep instrumentation overhead low. These macros give each temporary 566b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// variable a unique name based on the line number to prevent name collissions. 567b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define INTERNAL_TRACE_EVENT_UID3(a,b) \ 568b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org trace_event_unique_##a##b 569b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define INTERNAL_TRACE_EVENT_UID2(a,b) \ 570b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_UID3(a,b) 571b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define INTERNAL_TRACE_EVENT_UID(name_prefix) \ 572b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_UID2(name_prefix, __LINE__) 573b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 574b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Implementation detail: internal macro to create static category. 575b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO(category) \ 5767cdcde5345de3a45a0e2ad546513b72da57b980chclam@chromium.org static const unsigned char* INTERNAL_TRACE_EVENT_UID(catstatic) = 0; \ 577b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org if (!INTERNAL_TRACE_EVENT_UID(catstatic)) { \ 578b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_UID(catstatic) = \ 579b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org TRACE_EVENT_API_GET_CATEGORY_ENABLED(category); \ 580b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org } 581b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 582b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Implementation detail: internal macro to create static category and add 583b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// event if the category is enabled. 584b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define INTERNAL_TRACE_EVENT_ADD(phase, category, name, flags, ...) \ 585b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org do { \ 586b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO(category); \ 587b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org if (*INTERNAL_TRACE_EVENT_UID(catstatic)) { \ 588eba530a8f23372088647f102e91ceb78628f2cb8hclam@chromium.org webrtc::trace_event_internal::AddTraceEvent( \ 589b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org phase, INTERNAL_TRACE_EVENT_UID(catstatic), name, \ 590eba530a8f23372088647f102e91ceb78628f2cb8hclam@chromium.org webrtc::trace_event_internal::kNoEventId, flags, ##__VA_ARGS__); \ 591b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org } \ 592b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org } while (0) 593b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 594b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Implementation detail: internal macro to create static category and add begin 595b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// event if the category is enabled. Also adds the end event when the scope 596b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// ends. 597b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define INTERNAL_TRACE_EVENT_ADD_SCOPED(category, name, ...) \ 598b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO(category); \ 599eba530a8f23372088647f102e91ceb78628f2cb8hclam@chromium.org webrtc::trace_event_internal::TraceEndOnScopeClose \ 600b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_UID(profileScope); \ 601b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org if (*INTERNAL_TRACE_EVENT_UID(catstatic)) { \ 602eba530a8f23372088647f102e91ceb78628f2cb8hclam@chromium.org webrtc::trace_event_internal::AddTraceEvent( \ 603b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org TRACE_EVENT_PHASE_BEGIN, \ 604b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_UID(catstatic), \ 605eba530a8f23372088647f102e91ceb78628f2cb8hclam@chromium.org name, webrtc::trace_event_internal::kNoEventId, \ 606b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org TRACE_EVENT_FLAG_NONE, ##__VA_ARGS__); \ 607b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_UID(profileScope).Initialize( \ 608b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_UID(catstatic), name); \ 609b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org } 610b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 611b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Implementation detail: internal macro to create static category and add 612b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// event if the category is enabled. 613b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define INTERNAL_TRACE_EVENT_ADD_WITH_ID(phase, category, name, id, flags, \ 614b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org ...) \ 615b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org do { \ 616b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO(category); \ 617b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org if (*INTERNAL_TRACE_EVENT_UID(catstatic)) { \ 618b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org unsigned char trace_event_flags = flags | TRACE_EVENT_FLAG_HAS_ID; \ 619eba530a8f23372088647f102e91ceb78628f2cb8hclam@chromium.org webrtc::trace_event_internal::TraceID trace_event_trace_id( \ 620b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org id, &trace_event_flags); \ 621eba530a8f23372088647f102e91ceb78628f2cb8hclam@chromium.org webrtc::trace_event_internal::AddTraceEvent( \ 622b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org phase, INTERNAL_TRACE_EVENT_UID(catstatic), \ 623b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org name, trace_event_trace_id.data(), trace_event_flags, \ 624b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org ##__VA_ARGS__); \ 625b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org } \ 626b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org } while (0) 627b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 628b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Notes regarding the following definitions: 629b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// New values can be added and propagated to third party libraries, but existing 630b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// definitions must never be changed, because third party libraries may use old 631b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// definitions. 632b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 633b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Phase indicates the nature of an event entry. E.g. part of a begin/end pair. 634b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_PHASE_BEGIN ('B') 635b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_PHASE_END ('E') 636b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_PHASE_INSTANT ('I') 637b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_PHASE_ASYNC_BEGIN ('S') 638b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_PHASE_ASYNC_STEP ('T') 639b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_PHASE_ASYNC_END ('F') 640b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_PHASE_FLOW_BEGIN ('s') 641b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_PHASE_FLOW_STEP ('t') 642b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_PHASE_FLOW_END ('f') 643b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_PHASE_METADATA ('M') 644b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_PHASE_COUNTER ('C') 645b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 646b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Flags for changing the behavior of TRACE_EVENT_API_ADD_TRACE_EVENT. 647b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_FLAG_NONE (static_cast<unsigned char>(0)) 648b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_FLAG_COPY (static_cast<unsigned char>(1 << 0)) 649b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_FLAG_HAS_ID (static_cast<unsigned char>(1 << 1)) 650b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_EVENT_FLAG_MANGLE_ID (static_cast<unsigned char>(1 << 2)) 651b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 652b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Type values for identifying types in the TraceValue union. 653b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_VALUE_TYPE_BOOL (static_cast<unsigned char>(1)) 654b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_VALUE_TYPE_UINT (static_cast<unsigned char>(2)) 655b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_VALUE_TYPE_INT (static_cast<unsigned char>(3)) 656b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_VALUE_TYPE_DOUBLE (static_cast<unsigned char>(4)) 657b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_VALUE_TYPE_POINTER (static_cast<unsigned char>(5)) 658b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_VALUE_TYPE_STRING (static_cast<unsigned char>(6)) 659b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define TRACE_VALUE_TYPE_COPY_STRING (static_cast<unsigned char>(7)) 660b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 661eba530a8f23372088647f102e91ceb78628f2cb8hclam@chromium.orgnamespace webrtc { 662b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.orgnamespace trace_event_internal { 663b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 664b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Specify these values when the corresponding argument of AddTraceEvent is not 665b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// used. 666b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.orgconst int kZeroNumArgs = 0; 667b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.orgconst unsigned long long kNoEventId = 0; 668b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 669b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// TraceID encapsulates an ID that can either be an integer or pointer. Pointers 670b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// are mangled with the Process ID so that they are unlikely to collide when the 671b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// same pointer is used on different processes. 672b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.orgclass TraceID { 673b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org public: 674b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org class ForceMangle { 675b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org public: 676b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org explicit ForceMangle(unsigned long long id) : data_(id) {} 677b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org explicit ForceMangle(unsigned long id) : data_(id) {} 678b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org explicit ForceMangle(unsigned int id) : data_(id) {} 679b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org explicit ForceMangle(unsigned short id) : data_(id) {} 680b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org explicit ForceMangle(unsigned char id) : data_(id) {} 681b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org explicit ForceMangle(long long id) 682b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org : data_(static_cast<unsigned long long>(id)) {} 683b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org explicit ForceMangle(long id) 684b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org : data_(static_cast<unsigned long long>(id)) {} 685b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org explicit ForceMangle(int id) 686b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org : data_(static_cast<unsigned long long>(id)) {} 687b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org explicit ForceMangle(short id) 688b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org : data_(static_cast<unsigned long long>(id)) {} 689b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org explicit ForceMangle(signed char id) 690b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org : data_(static_cast<unsigned long long>(id)) {} 691b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 692b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org unsigned long long data() const { return data_; } 693b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 694b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org private: 695b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org unsigned long long data_; 696b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org }; 697b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 698b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org explicit TraceID(const void* id, unsigned char* flags) 699b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org : data_(static_cast<unsigned long long>( 700b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org reinterpret_cast<unsigned long>(id))) { 701b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org *flags |= TRACE_EVENT_FLAG_MANGLE_ID; 702b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org } 703b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org explicit TraceID(ForceMangle id, unsigned char* flags) : data_(id.data()) { 704b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org *flags |= TRACE_EVENT_FLAG_MANGLE_ID; 705b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org } 706b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org explicit TraceID(unsigned long long id, unsigned char* flags) 707b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org : data_(id) { (void)flags; } 708b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org explicit TraceID(unsigned long id, unsigned char* flags) 709b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org : data_(id) { (void)flags; } 710b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org explicit TraceID(unsigned int id, unsigned char* flags) 711b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org : data_(id) { (void)flags; } 712b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org explicit TraceID(unsigned short id, unsigned char* flags) 713b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org : data_(id) { (void)flags; } 714b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org explicit TraceID(unsigned char id, unsigned char* flags) 715b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org : data_(id) { (void)flags; } 716b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org explicit TraceID(long long id, unsigned char* flags) 717b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org : data_(static_cast<unsigned long long>(id)) { (void)flags; } 718b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org explicit TraceID(long id, unsigned char* flags) 719b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org : data_(static_cast<unsigned long long>(id)) { (void)flags; } 720b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org explicit TraceID(int id, unsigned char* flags) 721b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org : data_(static_cast<unsigned long long>(id)) { (void)flags; } 722b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org explicit TraceID(short id, unsigned char* flags) 723b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org : data_(static_cast<unsigned long long>(id)) { (void)flags; } 724b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org explicit TraceID(signed char id, unsigned char* flags) 725b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org : data_(static_cast<unsigned long long>(id)) { (void)flags; } 726b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 727b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org unsigned long long data() const { return data_; } 728b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 729b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org private: 730b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org unsigned long long data_; 731b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org}; 732b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 733b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Simple union to store various types as unsigned long long. 734b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.orgunion TraceValueUnion { 735b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org bool as_bool; 736b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org unsigned long long as_uint; 737b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org long long as_int; 738b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org double as_double; 739b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org const void* as_pointer; 740b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org const char* as_string; 741b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org}; 742b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 743b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Simple container for const char* that should be copied instead of retained. 744b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.orgclass TraceStringWithCopy { 745b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org public: 746b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org explicit TraceStringWithCopy(const char* str) : str_(str) {} 747b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org operator const char* () const { return str_; } 748b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org private: 749b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org const char* str_; 750b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org}; 751b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 752b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Define SetTraceValue for each allowed type. It stores the type and 753b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// value in the return arguments. This allows this API to avoid declaring any 754b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// structures so that it is portable to third_party libraries. 755b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define INTERNAL_DECLARE_SET_TRACE_VALUE(actual_type, \ 756b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org union_member, \ 757b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org value_type_id) \ 758b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org static inline void SetTraceValue(actual_type arg, \ 759b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org unsigned char* type, \ 760b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org unsigned long long* value) { \ 761b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org TraceValueUnion type_value; \ 762b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org type_value.union_member = arg; \ 763b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org *type = value_type_id; \ 764b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org *value = type_value.as_uint; \ 765b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org } 766b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Simpler form for int types that can be safely casted. 767b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#define INTERNAL_DECLARE_SET_TRACE_VALUE_INT(actual_type, \ 768b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org value_type_id) \ 769b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org static inline void SetTraceValue(actual_type arg, \ 770b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org unsigned char* type, \ 771b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org unsigned long long* value) { \ 772b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org *type = value_type_id; \ 773b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org *value = static_cast<unsigned long long>(arg); \ 774b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org } 775b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 776b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.orgINTERNAL_DECLARE_SET_TRACE_VALUE_INT(unsigned long long, TRACE_VALUE_TYPE_UINT) 777b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.orgINTERNAL_DECLARE_SET_TRACE_VALUE_INT(unsigned long, TRACE_VALUE_TYPE_UINT) 778b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.orgINTERNAL_DECLARE_SET_TRACE_VALUE_INT(unsigned int, TRACE_VALUE_TYPE_UINT) 779b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.orgINTERNAL_DECLARE_SET_TRACE_VALUE_INT(unsigned short, TRACE_VALUE_TYPE_UINT) 780b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.orgINTERNAL_DECLARE_SET_TRACE_VALUE_INT(unsigned char, TRACE_VALUE_TYPE_UINT) 781b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.orgINTERNAL_DECLARE_SET_TRACE_VALUE_INT(long long, TRACE_VALUE_TYPE_INT) 782b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.orgINTERNAL_DECLARE_SET_TRACE_VALUE_INT(long, TRACE_VALUE_TYPE_INT) 783b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.orgINTERNAL_DECLARE_SET_TRACE_VALUE_INT(int, TRACE_VALUE_TYPE_INT) 784b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.orgINTERNAL_DECLARE_SET_TRACE_VALUE_INT(short, TRACE_VALUE_TYPE_INT) 785b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.orgINTERNAL_DECLARE_SET_TRACE_VALUE_INT(signed char, TRACE_VALUE_TYPE_INT) 786b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.orgINTERNAL_DECLARE_SET_TRACE_VALUE(bool, as_bool, TRACE_VALUE_TYPE_BOOL) 787b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.orgINTERNAL_DECLARE_SET_TRACE_VALUE(double, as_double, TRACE_VALUE_TYPE_DOUBLE) 788b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.orgINTERNAL_DECLARE_SET_TRACE_VALUE(const void*, as_pointer, 789b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org TRACE_VALUE_TYPE_POINTER) 790b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.orgINTERNAL_DECLARE_SET_TRACE_VALUE(const char*, as_string, 791b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org TRACE_VALUE_TYPE_STRING) 792b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.orgINTERNAL_DECLARE_SET_TRACE_VALUE(const TraceStringWithCopy&, as_string, 793b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org TRACE_VALUE_TYPE_COPY_STRING) 794b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 795b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#undef INTERNAL_DECLARE_SET_TRACE_VALUE 796b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#undef INTERNAL_DECLARE_SET_TRACE_VALUE_INT 797b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 798b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// std::string version of SetTraceValue so that trace arguments can be strings. 799b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.orgstatic inline void SetTraceValue(const std::string& arg, 800b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org unsigned char* type, 801b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org unsigned long long* value) { 802b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org TraceValueUnion type_value; 803b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org type_value.as_string = arg.c_str(); 804b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org *type = TRACE_VALUE_TYPE_COPY_STRING; 805b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org *value = type_value.as_uint; 806b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org} 807b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 808b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// These AddTraceEvent template functions are defined here instead of in the 809b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// macro, because the arg_values could be temporary objects, such as 810b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// std::string. In order to store pointers to the internal c_str and pass 811b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// through to the tracing API, the arg_values must live throughout 812b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// these procedures. 813b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 81462b6fbb187a5f7bb74f723651b78ef0fedffd643hclam@chromium.orgstatic inline void AddTraceEvent(char phase, 815b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org const unsigned char* category_enabled, 816b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org const char* name, 817b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org unsigned long long id, 818b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org unsigned char flags) { 81962b6fbb187a5f7bb74f723651b78ef0fedffd643hclam@chromium.org TRACE_EVENT_API_ADD_TRACE_EVENT( 820b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org phase, category_enabled, name, id, 821b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org kZeroNumArgs, NULL, NULL, NULL, 82262b6fbb187a5f7bb74f723651b78ef0fedffd643hclam@chromium.org flags); 823b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org} 824b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 825b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.orgtemplate<class ARG1_TYPE> 82662b6fbb187a5f7bb74f723651b78ef0fedffd643hclam@chromium.orgstatic inline void AddTraceEvent(char phase, 827b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org const unsigned char* category_enabled, 828b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org const char* name, 829b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org unsigned long long id, 830b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org unsigned char flags, 831b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org const char* arg1_name, 832b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org const ARG1_TYPE& arg1_val) { 833b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org const int num_args = 1; 834b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org unsigned char arg_types[1]; 835b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org unsigned long long arg_values[1]; 836b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org SetTraceValue(arg1_val, &arg_types[0], &arg_values[0]); 83762b6fbb187a5f7bb74f723651b78ef0fedffd643hclam@chromium.org TRACE_EVENT_API_ADD_TRACE_EVENT( 838b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org phase, category_enabled, name, id, 839b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org num_args, &arg1_name, arg_types, arg_values, 84062b6fbb187a5f7bb74f723651b78ef0fedffd643hclam@chromium.org flags); 841b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org} 842b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 843b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.orgtemplate<class ARG1_TYPE, class ARG2_TYPE> 84462b6fbb187a5f7bb74f723651b78ef0fedffd643hclam@chromium.orgstatic inline void AddTraceEvent(char phase, 845b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org const unsigned char* category_enabled, 846b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org const char* name, 847b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org unsigned long long id, 848b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org unsigned char flags, 849b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org const char* arg1_name, 850b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org const ARG1_TYPE& arg1_val, 851b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org const char* arg2_name, 852b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org const ARG2_TYPE& arg2_val) { 853b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org const int num_args = 2; 854b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org const char* arg_names[2] = { arg1_name, arg2_name }; 855b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org unsigned char arg_types[2]; 856b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org unsigned long long arg_values[2]; 857b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org SetTraceValue(arg1_val, &arg_types[0], &arg_values[0]); 858b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org SetTraceValue(arg2_val, &arg_types[1], &arg_values[1]); 85962b6fbb187a5f7bb74f723651b78ef0fedffd643hclam@chromium.org TRACE_EVENT_API_ADD_TRACE_EVENT( 860b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org phase, category_enabled, name, id, 861b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org num_args, arg_names, arg_types, arg_values, 86262b6fbb187a5f7bb74f723651b78ef0fedffd643hclam@chromium.org flags); 863b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org} 864b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 865b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org// Used by TRACE_EVENTx macro. Do not use directly. 866b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.orgclass TraceEndOnScopeClose { 867b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org public: 868b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org // Note: members of data_ intentionally left uninitialized. See Initialize. 869b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org TraceEndOnScopeClose() : p_data_(NULL) {} 870b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org ~TraceEndOnScopeClose() { 871b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org if (p_data_) 872b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org AddEventIfEnabled(); 873b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org } 874b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 875b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org void Initialize(const unsigned char* category_enabled, 876b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org const char* name) { 877b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org data_.category_enabled = category_enabled; 878b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org data_.name = name; 879b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org p_data_ = &data_; 880b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org } 881b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 882b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org private: 883b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org // Add the end event if the category is still enabled. 884b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org void AddEventIfEnabled() { 885b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org // Only called when p_data_ is non-null. 886b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org if (*p_data_->category_enabled) { 887b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org TRACE_EVENT_API_ADD_TRACE_EVENT( 888b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org TRACE_EVENT_PHASE_END, 889b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org p_data_->category_enabled, 890b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org p_data_->name, kNoEventId, 891b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org kZeroNumArgs, NULL, NULL, NULL, 892b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org TRACE_EVENT_FLAG_NONE); 893b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org } 894b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org } 895b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 896b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org // This Data struct workaround is to avoid initializing all the members 897b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org // in Data during construction of this object, since this object is always 898b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org // constructed, even when tracing is disabled. If the members of Data were 899b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org // members of this class instead, compiler warnings occur about potential 900b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org // uninitialized accesses. 901b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org struct Data { 902b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org const unsigned char* category_enabled; 903b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org const char* name; 904b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org }; 905b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org Data* p_data_; 906b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org Data data_; 907b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org}; 908b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 909b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org} // namespace trace_event_internal 910eba530a8f23372088647f102e91ceb78628f2cb8hclam@chromium.org} // namespace webrtc 911b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org 912b3395ecff385514a116c32d47b2a57e4f72f225ehclam@chromium.org#endif // WEBRTC_SYSTEM_WRAPPERS_INTERFACE_TRACE_EVENT_H_ 913