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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "chrome/common/profiling.h" | 5 #include "chrome/common/profiling.h" |
6 | 6 |
7 #include "base/at_exit.h" | 7 #include "base/at_exit.h" |
8 #include "base/bind.h" | 8 #include "base/bind.h" |
9 #include "base/command_line.h" | 9 #include "base/command_line.h" |
10 #include "base/debug/profiler.h" | 10 #include "base/debug/profiler.h" |
11 #include "base/lazy_instance.h" | 11 #include "base/lazy_instance.h" |
12 #include "base/message_loop.h" | 12 #include "base/message_loop.h" |
13 #include "base/strings/string_util.h" | 13 #include "base/strings/string_util.h" |
14 #include "base/threading/thread.h" | 14 #include "base/threading/thread.h" |
15 #include "chrome/common/chrome_switches.h" | 15 #include "chrome/common/chrome_switches.h" |
16 #include "v8/include/v8.h" | 16 #include "v8/include/v8.h" |
17 | 17 |
18 namespace { | 18 namespace { |
| 19 |
| 20 base::debug::AddDynamicSymbol add_dynamic_symbol_func = NULL; |
| 21 base::debug::MoveDynamicSymbol move_dynamic_symbol_func = NULL; |
| 22 |
| 23 void JitCodeEventHandler(const v8::JitCodeEvent* event) { |
| 24 DCHECK_NE(static_cast<base::debug::AddDynamicSymbol>(NULL), |
| 25 add_dynamic_symbol_func); |
| 26 DCHECK_NE(static_cast<base::debug::MoveDynamicSymbol>(NULL), |
| 27 move_dynamic_symbol_func); |
| 28 |
| 29 switch (event->type) { |
| 30 case v8::JitCodeEvent::CODE_ADDED: |
| 31 add_dynamic_symbol_func(event->code_start, event->code_len, |
| 32 event->name.str, event->name.len); |
| 33 break; |
| 34 |
| 35 case v8::JitCodeEvent::CODE_MOVED: |
| 36 move_dynamic_symbol_func(event->code_start, event->new_code_start); |
| 37 break; |
| 38 |
| 39 default: |
| 40 break; |
| 41 } |
| 42 } |
| 43 |
19 std::string GetProfileName() { | 44 std::string GetProfileName() { |
20 static const char kDefaultProfileName[] = "chrome-profile-{type}-{pid}"; | 45 static const char kDefaultProfileName[] = "chrome-profile-{type}-{pid}"; |
21 CR_DEFINE_STATIC_LOCAL(std::string, profile_name, ()); | 46 CR_DEFINE_STATIC_LOCAL(std::string, profile_name, ()); |
22 | 47 |
23 if (profile_name.empty()) { | 48 if (profile_name.empty()) { |
24 const CommandLine& command_line = *CommandLine::ForCurrentProcess(); | 49 const CommandLine& command_line = *CommandLine::ForCurrentProcess(); |
25 if (command_line.HasSwitch(switches::kProfilingFile)) | 50 if (command_line.HasSwitch(switches::kProfilingFile)) |
26 profile_name = command_line.GetSwitchValueASCII(switches::kProfilingFile); | 51 profile_name = command_line.GetSwitchValueASCII(switches::kProfilingFile); |
27 else | 52 else |
28 profile_name = std::string(kDefaultProfileName); | 53 profile_name = std::string(kDefaultProfileName); |
(...skipping 67 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
96 g_flush_thread_control = LAZY_INSTANCE_INITIALIZER; | 121 g_flush_thread_control = LAZY_INSTANCE_INITIALIZER; |
97 | 122 |
98 } // namespace | 123 } // namespace |
99 | 124 |
100 // static | 125 // static |
101 void Profiling::ProcessStarted() { | 126 void Profiling::ProcessStarted() { |
102 const CommandLine& command_line = *CommandLine::ForCurrentProcess(); | 127 const CommandLine& command_line = *CommandLine::ForCurrentProcess(); |
103 std::string process_type = | 128 std::string process_type = |
104 command_line.GetSwitchValueASCII(switches::kProcessType); | 129 command_line.GetSwitchValueASCII(switches::kProcessType); |
105 | 130 |
106 // Establish the V8 return address resolution hook if we're | 131 // Establish the V8 profiling hooks if we're an instrumented binary. |
107 // an instrumented binary. | |
108 if (base::debug::IsBinaryInstrumented()) { | 132 if (base::debug::IsBinaryInstrumented()) { |
109 base::debug::ReturnAddressLocationResolver resolve_func = | 133 base::debug::ReturnAddressLocationResolver resolve_func = |
110 base::debug::GetProfilerReturnAddrResolutionFunc(); | 134 base::debug::GetProfilerReturnAddrResolutionFunc(); |
111 | 135 |
112 if (resolve_func != NULL) { | 136 if (resolve_func != NULL) { |
113 v8::V8::SetReturnAddressLocationResolver(resolve_func); | 137 v8::V8::SetReturnAddressLocationResolver(resolve_func); |
114 } | 138 } |
| 139 |
| 140 // Set up the JIT code entry handler and the symbol callbacks if the |
| 141 // profiler supplies them. |
| 142 // TODO(siggi): Maybe add a switch or an environment variable to turn off |
| 143 // V8 profiling? |
| 144 base::debug::DynamicFunctionEntryHook entry_hook_func = |
| 145 base::debug::GetProfilerDynamicFunctionEntryHookFunc(); |
| 146 add_dynamic_symbol_func = base::debug::GetProfilerAddDynamicSymbolFunc(); |
| 147 move_dynamic_symbol_func = base::debug::GetProfilerMoveDynamicSymbolFunc(); |
| 148 |
| 149 v8::Isolate* isolate = v8::Isolate::GetCurrent(); |
| 150 if (isolate != NULL && |
| 151 entry_hook_func != NULL && |
| 152 add_dynamic_symbol_func != NULL && |
| 153 move_dynamic_symbol_func != NULL) { |
| 154 v8::V8::SetFunctionEntryHook(isolate, entry_hook_func); |
| 155 v8::V8::SetJitCodeEventHandler(v8::kJitCodeEventDefault, |
| 156 &JitCodeEventHandler); |
| 157 } |
115 } | 158 } |
116 | 159 |
117 if (command_line.HasSwitch(switches::kProfilingAtStart)) { | 160 if (command_line.HasSwitch(switches::kProfilingAtStart)) { |
118 std::string process_type_to_start = | 161 std::string process_type_to_start = |
119 command_line.GetSwitchValueASCII(switches::kProfilingAtStart); | 162 command_line.GetSwitchValueASCII(switches::kProfilingAtStart); |
120 if (process_type == process_type_to_start) | 163 if (process_type == process_type_to_start) |
121 Start(); | 164 Start(); |
122 } | 165 } |
123 } | 166 } |
124 | 167 |
(...skipping 20 matching lines...) Expand all Loading... |
145 return base::debug::BeingProfiled(); | 188 return base::debug::BeingProfiled(); |
146 } | 189 } |
147 | 190 |
148 // static | 191 // static |
149 void Profiling::Toggle() { | 192 void Profiling::Toggle() { |
150 if (BeingProfiled()) | 193 if (BeingProfiled()) |
151 Stop(); | 194 Stop(); |
152 else | 195 else |
153 Start(); | 196 Start(); |
154 } | 197 } |
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