profiling.cc revision 7dbb3d5cf0c15f500944d211057644d6a2f37371
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "chrome/common/profiling.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/at_exit.h" 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/bind.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/command_line.h" 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/debug/profiler.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/lazy_instance.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/message_loop.h" 13868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "base/strings/string_util.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/threading/thread.h" 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "chrome/common/chrome_switches.h" 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "v8/include/v8.h" 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace { 197dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 207dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdochbase::debug::AddDynamicSymbol add_dynamic_symbol_func = NULL; 217dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdochbase::debug::MoveDynamicSymbol move_dynamic_symbol_func = NULL; 227dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 237dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdochvoid JitCodeEventHandler(const v8::JitCodeEvent* event) { 247dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch DCHECK_NE(static_cast<base::debug::AddDynamicSymbol>(NULL), 257dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch add_dynamic_symbol_func); 267dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch DCHECK_NE(static_cast<base::debug::MoveDynamicSymbol>(NULL), 277dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch move_dynamic_symbol_func); 287dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 297dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch switch (event->type) { 307dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch case v8::JitCodeEvent::CODE_ADDED: 317dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch add_dynamic_symbol_func(event->code_start, event->code_len, 327dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch event->name.str, event->name.len); 337dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch break; 347dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 357dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch case v8::JitCodeEvent::CODE_MOVED: 367dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch move_dynamic_symbol_func(event->code_start, event->new_code_start); 377dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch break; 387dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 397dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch default: 407dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch break; 417dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch } 427dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch} 437dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)std::string GetProfileName() { 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static const char kDefaultProfileName[] = "chrome-profile-{type}-{pid}"; 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CR_DEFINE_STATIC_LOCAL(std::string, profile_name, ()); 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (profile_name.empty()) { 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const CommandLine& command_line = *CommandLine::ForCurrentProcess(); 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (command_line.HasSwitch(switches::kProfilingFile)) 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) profile_name = command_line.GetSwitchValueASCII(switches::kProfilingFile); 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) profile_name = std::string(kDefaultProfileName); 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string process_type = 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) command_line.GetSwitchValueASCII(switches::kProcessType); 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string type = process_type.empty() ? 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string("browser") : std::string(process_type); 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ReplaceSubstringsAfterOffset(&profile_name, 0, "{type}", type.c_str()); 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return profile_name; 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void FlushProfilingData(base::Thread* thread) { 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static const int kProfilingFlushSeconds = 10; 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!Profiling::BeingProfiled()) 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::debug::FlushProfiling(); 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static int flush_seconds; 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!flush_seconds) { 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const CommandLine& command_line = *CommandLine::ForCurrentProcess(); 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string profiling_flush = 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) command_line.GetSwitchValueASCII(switches::kProfilingFlush); 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!profiling_flush.empty()) { 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) flush_seconds = atoi(profiling_flush.c_str()); 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(flush_seconds > 0); 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) flush_seconds = kProfilingFlushSeconds; 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thread->message_loop()->PostDelayedTask( 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FROM_HERE, 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::Bind(&FlushProfilingData, thread), 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::TimeDelta::FromSeconds(flush_seconds)); 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class ProfilingThreadControl { 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ProfilingThreadControl() : thread_(NULL) {} 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void Start() { 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::AutoLock locked(lock_); 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (thread_ && thread_->IsRunning()) 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thread_ = new base::Thread("Profiling_Flush"); 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thread_->Start(); 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thread_->message_loop()->PostTask( 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FROM_HERE, base::Bind(&FlushProfilingData, thread_)); 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void Stop() { 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::AutoLock locked(lock_); 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!thread_ || !thread_->IsRunning()) 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thread_->Stop(); 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) delete thread_; 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thread_ = NULL; 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::Thread* thread_; 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::Lock lock_; 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(ProfilingThreadControl); 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)base::LazyInstance<ProfilingThreadControl>::Leaky 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) g_flush_thread_control = LAZY_INSTANCE_INITIALIZER; 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void Profiling::ProcessStarted() { 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const CommandLine& command_line = *CommandLine::ForCurrentProcess(); 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string process_type = 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) command_line.GetSwitchValueASCII(switches::kProcessType); 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1317dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // Establish the V8 profiling hooks if we're an instrumented binary. 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (base::debug::IsBinaryInstrumented()) { 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::debug::ReturnAddressLocationResolver resolve_func = 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::debug::GetProfilerReturnAddrResolutionFunc(); 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (resolve_func != NULL) { 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) v8::V8::SetReturnAddressLocationResolver(resolve_func); 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1397dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 1407dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // Set up the JIT code entry handler and the symbol callbacks if the 1417dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // profiler supplies them. 1427dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // TODO(siggi): Maybe add a switch or an environment variable to turn off 1437dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch // V8 profiling? 1447dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch base::debug::DynamicFunctionEntryHook entry_hook_func = 1457dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch base::debug::GetProfilerDynamicFunctionEntryHookFunc(); 1467dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch add_dynamic_symbol_func = base::debug::GetProfilerAddDynamicSymbolFunc(); 1477dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch move_dynamic_symbol_func = base::debug::GetProfilerMoveDynamicSymbolFunc(); 1487dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 1497dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch v8::Isolate* isolate = v8::Isolate::GetCurrent(); 1507dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch if (isolate != NULL && 1517dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch entry_hook_func != NULL && 1527dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch add_dynamic_symbol_func != NULL && 1537dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch move_dynamic_symbol_func != NULL) { 1547dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch v8::V8::SetFunctionEntryHook(isolate, entry_hook_func); 1557dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch v8::V8::SetJitCodeEventHandler(v8::kJitCodeEventDefault, 1567dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch &JitCodeEventHandler); 1577dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch } 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (command_line.HasSwitch(switches::kProfilingAtStart)) { 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string process_type_to_start = 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) command_line.GetSwitchValueASCII(switches::kProfilingAtStart); 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (process_type == process_type_to_start) 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Start(); 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void Profiling::Start() { 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const CommandLine& command_line = *CommandLine::ForCurrentProcess(); 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool flush = command_line.HasSwitch(switches::kProfilingFlush); 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::debug::StartProfiling(GetProfileName()); 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Schedule profile data flushing for single process because it doesn't 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // get written out correctly on exit. 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (flush) 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) g_flush_thread_control.Get().Start(); 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 1815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void Profiling::Stop() { 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) g_flush_thread_control.Get().Stop(); 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::debug::StopProfiling(); 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 1875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool Profiling::BeingProfiled() { 1885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return base::debug::BeingProfiled(); 1895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void Profiling::Toggle() { 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (BeingProfiled()) 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Stop(); 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Start(); 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 198