1b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// Copyright (c) 2012 The Chromium Authors. All rights reserved. 2b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// Use of this source code is governed by a BSD-style license that can be 3b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// found in the LICENSE file. 4b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 5b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#include "base/trace_event/trace_event_impl.h" 6b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 7cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko#include <stddef.h> 8b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 9b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#include "base/format_macros.h" 10b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#include "base/json/string_escape.h" 11cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko#include "base/process/process_handle.h" 12b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#include "base/stl_util.h" 13b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#include "base/strings/string_number_conversions.h" 14b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#include "base/strings/string_util.h" 15b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#include "base/strings/stringprintf.h" 16b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#include "base/strings/utf_string_conversions.h" 17b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat#include "base/trace_event/trace_event.h" 18cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko#include "base/trace_event/trace_log.h" 19b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 20b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Eratnamespace base { 21b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Eratnamespace trace_event { 22b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 23b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Eratnamespace { 24b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 25b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Eratsize_t GetAllocLength(const char* str) { return str ? strlen(str) + 1 : 0; } 26b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 27b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// Copies |*member| into |*buffer|, sets |*member| to point to this new 28b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// location, and then advances |*buffer| by the amount written. 29b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Eratvoid CopyTraceEventParameter(char** buffer, 30b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat const char** member, 31b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat const char* end) { 32b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (*member) { 33b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat size_t written = strlcpy(*buffer, *member, end - *buffer) + 1; 34b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat DCHECK_LE(static_cast<int>(written), end - *buffer); 35b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat *member = *buffer; 36b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat *buffer += written; 37b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 38b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} 39b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 40b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} // namespace 41b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 42b8cf94937c52feb53b55c39e3f82094d27de464cDaniel EratTraceEvent::TraceEvent() 43b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat : duration_(TimeDelta::FromInternalValue(-1)), 44b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat id_(0u), 45b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat category_group_enabled_(NULL), 46b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat name_(NULL), 47b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat thread_id_(0), 48cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko flags_(0), 49cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko phase_(TRACE_EVENT_PHASE_BEGIN) { 50b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat for (int i = 0; i < kTraceMaxNumArgs; ++i) 51b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat arg_names_[i] = NULL; 52b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat memset(arg_values_, 0, sizeof(arg_values_)); 53b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} 54b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 55b8cf94937c52feb53b55c39e3f82094d27de464cDaniel EratTraceEvent::~TraceEvent() { 56b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} 57b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 58b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Eratvoid TraceEvent::CopyFrom(const TraceEvent& other) { 59b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat timestamp_ = other.timestamp_; 60b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat thread_timestamp_ = other.thread_timestamp_; 61b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat duration_ = other.duration_; 62b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat id_ = other.id_; 63b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat category_group_enabled_ = other.category_group_enabled_; 64b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat name_ = other.name_; 65cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko if (other.flags_ & TRACE_EVENT_FLAG_HAS_PROCESS_ID) 66cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko process_id_ = other.process_id_; 67cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko else 68cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko thread_id_ = other.thread_id_; 69b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat phase_ = other.phase_; 70b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat flags_ = other.flags_; 71b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat parameter_copy_storage_ = other.parameter_copy_storage_; 72b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 73b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat for (int i = 0; i < kTraceMaxNumArgs; ++i) { 74b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat arg_names_[i] = other.arg_names_[i]; 75b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat arg_types_[i] = other.arg_types_[i]; 76b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat arg_values_[i] = other.arg_values_[i]; 77b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat convertable_values_[i] = other.convertable_values_[i]; 78b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 79b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} 80b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 81b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Eratvoid TraceEvent::Initialize( 82b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat int thread_id, 83cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko TimeTicks timestamp, 84b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat ThreadTicks thread_timestamp, 85b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat char phase, 86b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat const unsigned char* category_group_enabled, 87b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat const char* name, 88b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat unsigned long long id, 89cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko unsigned long long bind_id, 90b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat int num_args, 91b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat const char** arg_names, 92b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat const unsigned char* arg_types, 93b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat const unsigned long long* arg_values, 94b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat const scoped_refptr<ConvertableToTraceFormat>* convertable_values, 95cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko unsigned int flags) { 96b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat timestamp_ = timestamp; 97b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat thread_timestamp_ = thread_timestamp; 98b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat duration_ = TimeDelta::FromInternalValue(-1); 99b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat id_ = id; 100b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat category_group_enabled_ = category_group_enabled; 101b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat name_ = name; 102b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat thread_id_ = thread_id; 103b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat phase_ = phase; 104b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat flags_ = flags; 105cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko bind_id_ = bind_id; 106b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 107b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // Clamp num_args since it may have been set by a third_party library. 108b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat num_args = (num_args > kTraceMaxNumArgs) ? kTraceMaxNumArgs : num_args; 109b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat int i = 0; 110b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat for (; i < num_args; ++i) { 111b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat arg_names_[i] = arg_names[i]; 112b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat arg_types_[i] = arg_types[i]; 113b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 114b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (arg_types[i] == TRACE_VALUE_TYPE_CONVERTABLE) 115b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat convertable_values_[i] = convertable_values[i]; 116b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat else 117b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat arg_values_[i].as_uint = arg_values[i]; 118b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 119b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat for (; i < kTraceMaxNumArgs; ++i) { 120b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat arg_names_[i] = NULL; 121b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat arg_values_[i].as_uint = 0u; 122b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat convertable_values_[i] = NULL; 123b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat arg_types_[i] = TRACE_VALUE_TYPE_UINT; 124b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 125b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 126b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat bool copy = !!(flags & TRACE_EVENT_FLAG_COPY); 127b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat size_t alloc_size = 0; 128b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (copy) { 129b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat alloc_size += GetAllocLength(name); 130b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat for (i = 0; i < num_args; ++i) { 131b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat alloc_size += GetAllocLength(arg_names_[i]); 132b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (arg_types_[i] == TRACE_VALUE_TYPE_STRING) 133b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat arg_types_[i] = TRACE_VALUE_TYPE_COPY_STRING; 134b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 135b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 136b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 137b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat bool arg_is_copy[kTraceMaxNumArgs]; 138b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat for (i = 0; i < num_args; ++i) { 139b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // No copying of convertable types, we retain ownership. 140b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (arg_types_[i] == TRACE_VALUE_TYPE_CONVERTABLE) 141b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat continue; 142b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 143b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // We only take a copy of arg_vals if they are of type COPY_STRING. 144b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat arg_is_copy[i] = (arg_types_[i] == TRACE_VALUE_TYPE_COPY_STRING); 145b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (arg_is_copy[i]) 146b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat alloc_size += GetAllocLength(arg_values_[i].as_string); 147b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 148b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 149b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (alloc_size) { 150b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat parameter_copy_storage_ = new RefCountedString; 151b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat parameter_copy_storage_->data().resize(alloc_size); 152b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat char* ptr = string_as_array(¶meter_copy_storage_->data()); 153b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat const char* end = ptr + alloc_size; 154b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (copy) { 155b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat CopyTraceEventParameter(&ptr, &name_, end); 156b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat for (i = 0; i < num_args; ++i) { 157b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat CopyTraceEventParameter(&ptr, &arg_names_[i], end); 158b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 159b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 160b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat for (i = 0; i < num_args; ++i) { 161b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (arg_types_[i] == TRACE_VALUE_TYPE_CONVERTABLE) 162b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat continue; 163b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (arg_is_copy[i]) 164b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat CopyTraceEventParameter(&ptr, &arg_values_[i].as_string, end); 165b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 166b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat DCHECK_EQ(end, ptr) << "Overrun by " << ptr - end; 167b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 168b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} 169b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 170b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Eratvoid TraceEvent::Reset() { 171b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // Only reset fields that won't be initialized in Initialize(), or that may 172b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // hold references to other objects. 173b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat duration_ = TimeDelta::FromInternalValue(-1); 174b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat parameter_copy_storage_ = NULL; 175b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat for (int i = 0; i < kTraceMaxNumArgs; ++i) 176b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat convertable_values_[i] = NULL; 177b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} 178b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 179cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenkovoid TraceEvent::UpdateDuration(const TimeTicks& now, 180b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat const ThreadTicks& thread_now) { 181b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat DCHECK_EQ(duration_.ToInternalValue(), -1); 182b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat duration_ = now - timestamp_; 183cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko 184cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko // |thread_timestamp_| can be empty if the thread ticks clock wasn't 185cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko // initialized when it was recorded. 186cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko if (thread_timestamp_ != ThreadTicks()) 187cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko thread_duration_ = thread_now - thread_timestamp_; 188b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} 189b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 190b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Eratvoid TraceEvent::EstimateTraceMemoryOverhead( 191b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat TraceEventMemoryOverhead* overhead) { 192cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko overhead->Add("TraceEvent", sizeof(*this)); 193cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko 194cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko // TODO(primiano): parameter_copy_storage_ is refcounted and, in theory, 195cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko // could be shared by several events and we might overcount. In practice 196cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko // this is unlikely but it's worth checking. 197cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko if (parameter_copy_storage_) 198cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko overhead->AddRefCountedString(*parameter_copy_storage_.get()); 199cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko 200cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko for (size_t i = 0; i < kTraceMaxNumArgs; ++i) { 201cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko if (arg_types_[i] == TRACE_VALUE_TYPE_CONVERTABLE) 202cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko convertable_values_[i]->EstimateTraceMemoryOverhead(overhead); 203b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 204b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} 205b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 206b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat// static 207b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Eratvoid TraceEvent::AppendValueAsJSON(unsigned char type, 208b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat TraceEvent::TraceValue value, 209b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat std::string* out) { 210b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat switch (type) { 211b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat case TRACE_VALUE_TYPE_BOOL: 212b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat *out += value.as_bool ? "true" : "false"; 213b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat break; 214b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat case TRACE_VALUE_TYPE_UINT: 215cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko StringAppendF(out, "%" PRIu64, static_cast<uint64_t>(value.as_uint)); 216b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat break; 217b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat case TRACE_VALUE_TYPE_INT: 218cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko StringAppendF(out, "%" PRId64, static_cast<int64_t>(value.as_int)); 219b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat break; 220b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat case TRACE_VALUE_TYPE_DOUBLE: { 221b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // FIXME: base/json/json_writer.cc is using the same code, 222b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // should be made into a common method. 223b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat std::string real; 224b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat double val = value.as_double; 225b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (std::isfinite(val)) { 226b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat real = DoubleToString(val); 227b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // Ensure that the number has a .0 if there's no decimal or 'e'. This 228b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // makes sure that when we read the JSON back, it's interpreted as a 229b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // real rather than an int. 230b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (real.find('.') == std::string::npos && 231b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat real.find('e') == std::string::npos && 232b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat real.find('E') == std::string::npos) { 233b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat real.append(".0"); 234b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 235b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // The JSON spec requires that non-integer values in the range (-1,1) 236b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // have a zero before the decimal point - ".52" is not valid, "0.52" is. 237b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (real[0] == '.') { 238b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat real.insert(0, "0"); 239b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } else if (real.length() > 1 && real[0] == '-' && real[1] == '.') { 240b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // "-.1" bad "-0.1" good 241b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat real.insert(1, "0"); 242b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 243b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } else if (std::isnan(val)){ 244b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // The JSON spec doesn't allow NaN and Infinity (since these are 245b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // objects in EcmaScript). Use strings instead. 246b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat real = "\"NaN\""; 247b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } else if (val < 0) { 248b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat real = "\"-Infinity\""; 249b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } else { 250b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat real = "\"Infinity\""; 251b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 252b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat StringAppendF(out, "%s", real.c_str()); 253b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat break; 254b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 255b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat case TRACE_VALUE_TYPE_POINTER: 256b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // JSON only supports double and int numbers. 257b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // So as not to lose bits from a 64-bit pointer, output as a hex string. 258cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko StringAppendF( 259cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko out, "\"0x%" PRIx64 "\"", 260cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko static_cast<uint64_t>(reinterpret_cast<intptr_t>(value.as_pointer))); 261b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat break; 262b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat case TRACE_VALUE_TYPE_STRING: 263b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat case TRACE_VALUE_TYPE_COPY_STRING: 264b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat EscapeJSONString(value.as_string ? value.as_string : "NULL", true, out); 265b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat break; 266b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat default: 267b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat NOTREACHED() << "Don't know how to print this value"; 268b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat break; 269b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 270b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} 271b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 272b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Eratvoid TraceEvent::AppendAsJSON( 273b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat std::string* out, 274b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat const ArgumentFilterPredicate& argument_filter_predicate) const { 275cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko int64_t time_int64 = timestamp_.ToInternalValue(); 276cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko int process_id; 277cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko int thread_id; 278cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko if ((flags_ & TRACE_EVENT_FLAG_HAS_PROCESS_ID) && 279cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko process_id_ != kNullProcessId) { 280cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko process_id = process_id_; 281cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko thread_id = -1; 282cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko } else { 283cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko process_id = TraceLog::GetInstance()->process_id(); 284cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko thread_id = thread_id_; 285cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko } 286b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat const char* category_group_name = 287b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat TraceLog::GetCategoryGroupName(category_group_enabled_); 288b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 289b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // Category group checked at category creation time. 290b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat DCHECK(!strchr(name_, '"')); 291b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat StringAppendF(out, "{\"pid\":%i,\"tid\":%i,\"ts\":%" PRId64 292b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat "," 293b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat "\"ph\":\"%c\",\"cat\":\"%s\",\"name\":\"%s\",\"args\":", 294cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko process_id, thread_id, time_int64, phase_, category_group_name, 295b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat name_); 296b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 297b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // Output argument names and values, stop at first NULL argument name. 298cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko // TODO(oysteine): The dual predicates here is a bit ugly; if the filtering 299cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko // capabilities need to grow even more precise we should rethink this 300cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko // approach 301cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko ArgumentNameFilterPredicate argument_name_filter_predicate; 302cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko bool strip_args = 303cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko arg_names_[0] && !argument_filter_predicate.is_null() && 304cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko !argument_filter_predicate.Run(category_group_name, name_, 305cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko &argument_name_filter_predicate); 306b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 307b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (strip_args) { 308b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat *out += "\"__stripped__\""; 309b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } else { 310b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat *out += "{"; 311b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 312b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat for (int i = 0; i < kTraceMaxNumArgs && arg_names_[i]; ++i) { 313b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (i > 0) 314b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat *out += ","; 315b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat *out += "\""; 316b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat *out += arg_names_[i]; 317b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat *out += "\":"; 318b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 319cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko if (argument_name_filter_predicate.is_null() || 320cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko argument_name_filter_predicate.Run(arg_names_[i])) { 321cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko if (arg_types_[i] == TRACE_VALUE_TYPE_CONVERTABLE) 322cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko convertable_values_[i]->AppendAsTraceFormat(out); 323cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko else 324cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko AppendValueAsJSON(arg_types_[i], arg_values_[i], out); 325cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko } else { 326cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko *out += "\"__stripped__\""; 327cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko } 328b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 329b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 330b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat *out += "}"; 331b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 332b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 333b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (phase_ == TRACE_EVENT_PHASE_COMPLETE) { 334cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko int64_t duration = duration_.ToInternalValue(); 335b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (duration != -1) 336b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat StringAppendF(out, ",\"dur\":%" PRId64, duration); 337b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (!thread_timestamp_.is_null()) { 338cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko int64_t thread_duration = thread_duration_.ToInternalValue(); 339b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (thread_duration != -1) 340b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat StringAppendF(out, ",\"tdur\":%" PRId64, thread_duration); 341b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 342b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 343b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 344b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // Output tts if thread_timestamp is valid. 345b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (!thread_timestamp_.is_null()) { 346cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko int64_t thread_time_int64 = thread_timestamp_.ToInternalValue(); 347b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat StringAppendF(out, ",\"tts\":%" PRId64, thread_time_int64); 348b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 349b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 350b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // Output async tts marker field if flag is set. 351b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (flags_ & TRACE_EVENT_FLAG_ASYNC_TTS) { 352b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat StringAppendF(out, ", \"use_async_tts\":1"); 353b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 354b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 355b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // If id_ is set, print it out as a hex string so we don't loose any 356b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // bits (it might be a 64-bit pointer). 357b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (flags_ & TRACE_EVENT_FLAG_HAS_ID) 358cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko StringAppendF(out, ",\"id\":\"0x%" PRIx64 "\"", static_cast<uint64_t>(id_)); 359b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 360b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (flags_ & TRACE_EVENT_FLAG_BIND_TO_ENCLOSING) 361b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat StringAppendF(out, ",\"bp\":\"e\""); 362b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 363cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko if ((flags_ & TRACE_EVENT_FLAG_FLOW_OUT) || 364cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko (flags_ & TRACE_EVENT_FLAG_FLOW_IN)) { 365cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko StringAppendF(out, ",\"bind_id\":\"0x%" PRIx64 "\"", 366cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko static_cast<uint64_t>(bind_id_)); 367cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko } 368cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko if (flags_ & TRACE_EVENT_FLAG_FLOW_IN) 369cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko StringAppendF(out, ",\"flow_in\":true"); 370cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko if (flags_ & TRACE_EVENT_FLAG_FLOW_OUT) 371cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko StringAppendF(out, ",\"flow_out\":true"); 372cce46a0c214b37e8da48c522c83037e8ffa4f9fdAlex Vakulenko 373b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat // Instant events also output their scope. 374b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (phase_ == TRACE_EVENT_PHASE_INSTANT) { 375b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat char scope = '?'; 376b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat switch (flags_ & TRACE_EVENT_FLAG_SCOPE_MASK) { 377b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat case TRACE_EVENT_SCOPE_GLOBAL: 378b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat scope = TRACE_EVENT_SCOPE_NAME_GLOBAL; 379b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat break; 380b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 381b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat case TRACE_EVENT_SCOPE_PROCESS: 382b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat scope = TRACE_EVENT_SCOPE_NAME_PROCESS; 383b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat break; 384b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 385b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat case TRACE_EVENT_SCOPE_THREAD: 386b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat scope = TRACE_EVENT_SCOPE_NAME_THREAD; 387b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat break; 388b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 389b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat StringAppendF(out, ",\"s\":\"%c\"", scope); 390b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 391b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 392b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat *out += "}"; 393b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} 394b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 395b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Eratvoid TraceEvent::AppendPrettyPrinted(std::ostringstream* out) const { 396b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat *out << name_ << "["; 397b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat *out << TraceLog::GetCategoryGroupName(category_group_enabled_); 398b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat *out << "]"; 399b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (arg_names_[0]) { 400b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat *out << ", {"; 401b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat for (int i = 0; i < kTraceMaxNumArgs && arg_names_[i]; ++i) { 402b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (i > 0) 403b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat *out << ", "; 404b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat *out << arg_names_[i] << ":"; 405b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat std::string value_as_text; 406b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 407b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat if (arg_types_[i] == TRACE_VALUE_TYPE_CONVERTABLE) 408b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat convertable_values_[i]->AppendAsTraceFormat(&value_as_text); 409b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat else 410b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat AppendValueAsJSON(arg_types_[i], arg_values_[i], &value_as_text); 411b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 412b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat *out << value_as_text; 413b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 414b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat *out << "}"; 415b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat } 416b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} 417b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat 418b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} // namespace trace_event 419b8cf94937c52feb53b55c39e3f82094d27de464cDaniel Erat} // namespace base 420