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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 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 #ifndef CHROME_COMMON_STACK_SAMPLING_CONFIGURATION_H_ | 5 #ifndef CHROME_COMMON_STACK_SAMPLING_CONFIGURATION_H_ |
6 #define CHROME_COMMON_STACK_SAMPLING_CONFIGURATION_H_ | 6 #define CHROME_COMMON_STACK_SAMPLING_CONFIGURATION_H_ |
7 | 7 |
| 8 #include <string> |
| 9 |
| 10 #include "base/callback.h" |
8 #include "base/macros.h" | 11 #include "base/macros.h" |
9 #include "base/profiler/stack_sampling_profiler.h" | 12 #include "base/profiler/stack_sampling_profiler.h" |
10 | 13 |
11 // Chooses a configuration for the stack sampling profiler for browser process | 14 namespace base { |
12 // startup. This must live outside of ChromeBrowserMainParts so it can be | 15 class CommandLine; |
13 // friended by ChromeMetricsServiceAccessor. | 16 } // namespace base |
| 17 |
| 18 // StackSamplingConfiguration chooses a configuration for the enable state of |
| 19 // the stack sampling profiler across all processes. This configuration is |
| 20 // determined once at browser process startup. Configurations for child |
| 21 // processes are communicated via command line arguments. |
14 class StackSamplingConfiguration { | 22 class StackSamplingConfiguration { |
15 public: | 23 public: |
16 StackSamplingConfiguration(); | 24 StackSamplingConfiguration(); |
17 | 25 |
18 // Get the stack sampling params to use for this session. | 26 // Get the stack sampling params to use for this process. |
19 base::StackSamplingProfiler::SamplingParams GetSamplingParams() const; | 27 base::StackSamplingProfiler::SamplingParams |
| 28 GetSamplingParamsForCurrentProcess() const; |
20 | 29 |
21 // Returns true if the profiler should be started at all. | 30 // Returns true if the profiler should be started for the current process. |
22 bool IsProfilerEnabled() const; | 31 bool IsProfilerEnabledForCurrentProcess() const; |
23 | 32 |
24 // Get the synthetic field trial configuration. Returns true if a synthetic | 33 // Get the synthetic field trial configuration. Returns true if a synthetic |
25 // field trial should be registered. | 34 // field trial should be registered. This should only be called from the |
| 35 // browser process. |
26 bool GetSyntheticFieldTrial(std::string* trial_name, | 36 bool GetSyntheticFieldTrial(std::string* trial_name, |
27 std::string* group_name) const; | 37 std::string* group_name) const; |
28 | 38 |
| 39 // Add a command line switch that instructs the child process to run the |
| 40 // profiler. This should only be called from the browser process. |
| 41 void AppendCommandLineSwitchForChildProcess( |
| 42 const std::string& process_type, |
| 43 base::CommandLine* command_line) const; |
| 44 |
| 45 // Returns the StackSamplingConfiguration for the process. |
| 46 static StackSamplingConfiguration* Get(); |
| 47 |
29 private: | 48 private: |
30 enum ProfileConfiguration { | 49 enum ProfileConfiguration { |
| 50 // Chrome-wide configurations set in the browser process. |
31 PROFILE_DISABLED, | 51 PROFILE_DISABLED, |
32 PROFILE_CONTROL, | 52 PROFILE_CONTROL, |
33 PROFILE_NO_SAMPLES, // Run the profiler thread, but don't collect profiles. | 53 PROFILE_BROWSER_PROCESS, |
34 PROFILE_5HZ, | 54 PROFILE_GPU_PROCESS, |
35 PROFILE_10HZ, | 55 PROFILE_BROWSER_AND_GPU_PROCESS, |
36 PROFILE_100HZ | 56 |
| 57 // Configuration set in the child processes, which receive their enable |
| 58 // state on the command line from the browser process. |
| 59 PROFILE_FROM_COMMAND_LINE |
37 }; | 60 }; |
38 | 61 |
| 62 // Generates sampling profiler configurations for all processes. |
39 static ProfileConfiguration GenerateConfiguration(); | 63 static ProfileConfiguration GenerateConfiguration(); |
40 | 64 |
| 65 // In the browser process this represents the configuration to use across all |
| 66 // Chrome processes. In the child processes it is always |
| 67 // PROFILE_FROM_COMMAND_LINE. |
41 const ProfileConfiguration configuration_; | 68 const ProfileConfiguration configuration_; |
42 | 69 |
43 DISALLOW_COPY_AND_ASSIGN(StackSamplingConfiguration); | 70 DISALLOW_COPY_AND_ASSIGN(StackSamplingConfiguration); |
44 }; | 71 }; |
45 | 72 |
46 #endif // CHROME_COMMON_STACK_SAMPLING_CONFIGURATION_H_ | 73 #endif // CHROME_COMMON_STACK_SAMPLING_CONFIGURATION_H_ |
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