profiling.cc revision 5821806d5e7f356e8fa4b058a389a808ea183019
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" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/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 { 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)std::string GetProfileName() { 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static const char kDefaultProfileName[] = "chrome-profile-{type}-{pid}"; 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CR_DEFINE_STATIC_LOCAL(std::string, profile_name, ()); 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (profile_name.empty()) { 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const CommandLine& command_line = *CommandLine::ForCurrentProcess(); 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (command_line.HasSwitch(switches::kProfilingFile)) 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) profile_name = command_line.GetSwitchValueASCII(switches::kProfilingFile); 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) profile_name = std::string(kDefaultProfileName); 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string process_type = 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) command_line.GetSwitchValueASCII(switches::kProcessType); 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string type = process_type.empty() ? 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string("browser") : std::string(process_type); 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ReplaceSubstringsAfterOffset(&profile_name, 0, "{type}", type.c_str()); 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return profile_name; 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void FlushProfilingData(base::Thread* thread) { 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static const int kProfilingFlushSeconds = 10; 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!Profiling::BeingProfiled()) 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::debug::FlushProfiling(); 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) static int flush_seconds; 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!flush_seconds) { 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const CommandLine& command_line = *CommandLine::ForCurrentProcess(); 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string profiling_flush = 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) command_line.GetSwitchValueASCII(switches::kProfilingFlush); 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!profiling_flush.empty()) { 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) flush_seconds = atoi(profiling_flush.c_str()); 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(flush_seconds > 0); 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) flush_seconds = kProfilingFlushSeconds; 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thread->message_loop()->PostDelayedTask( 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FROM_HERE, 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::Bind(&FlushProfilingData, thread), 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::TimeDelta::FromSeconds(flush_seconds)); 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class ProfilingThreadControl { 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ProfilingThreadControl() : thread_(NULL) {} 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void Start() { 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::AutoLock locked(lock_); 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (thread_ && thread_->IsRunning()) 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thread_ = new base::Thread("Profiling_Flush"); 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thread_->Start(); 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thread_->message_loop()->PostTask( 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FROM_HERE, base::Bind(&FlushProfilingData, thread_)); 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void Stop() { 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::AutoLock locked(lock_); 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!thread_ || !thread_->IsRunning()) 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thread_->Stop(); 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) delete thread_; 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) thread_ = NULL; 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::Thread* thread_; 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::Lock lock_; 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(ProfilingThreadControl); 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)base::LazyInstance<ProfilingThreadControl>::Leaky 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) g_flush_thread_control = LAZY_INSTANCE_INITIALIZER; 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void Profiling::ProcessStarted() { 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const CommandLine& command_line = *CommandLine::ForCurrentProcess(); 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string process_type = 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) command_line.GetSwitchValueASCII(switches::kProcessType); 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Establish the V8 return address resolution hook if we're 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // an instrumented binary. 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (base::debug::IsBinaryInstrumented()) { 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::debug::ReturnAddressLocationResolver resolve_func = 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::debug::GetProfilerReturnAddrResolutionFunc(); 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (resolve_func != NULL) { 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) v8::V8::SetReturnAddressLocationResolver(resolve_func); 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (command_line.HasSwitch(switches::kProfilingAtStart)) { 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string process_type_to_start = 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) command_line.GetSwitchValueASCII(switches::kProfilingAtStart); 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (process_type == process_type_to_start) 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Start(); 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void Profiling::Start() { 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const CommandLine& command_line = *CommandLine::ForCurrentProcess(); 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool flush = command_line.HasSwitch(switches::kProfilingFlush); 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::debug::StartProfiling(GetProfileName()); 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Schedule profile data flushing for single process because it doesn't 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // get written out correctly on exit. 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (flush) 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) g_flush_thread_control.Get().Start(); 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void Profiling::Stop() { 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) g_flush_thread_control.Get().Stop(); 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::debug::StopProfiling(); 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool Profiling::BeingProfiled() { 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return base::debug::BeingProfiled(); 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void Profiling::Toggle() { 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (BeingProfiled()) 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Stop(); 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Start(); 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 155