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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 "base/tracked_objects.h" | 5 #include "base/tracked_objects.h" |
6 | 6 |
7 #include <limits.h> | 7 #include <limits.h> |
8 #include <stdlib.h> | 8 #include <stdlib.h> |
9 | 9 |
10 #include "base/atomicops.h" | 10 #include "base/atomicops.h" |
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60 ENABLED_TIMING, | 60 ENABLED_TIMING, |
61 DISABLED_TIMING, | 61 DISABLED_TIMING, |
62 }; | 62 }; |
63 static base::subtle::Atomic32 timing_enabled = UNDEFINED_TIMING; | 63 static base::subtle::Atomic32 timing_enabled = UNDEFINED_TIMING; |
64 // Reading |timing_enabled| is done without barrier because multiple | 64 // Reading |timing_enabled| is done without barrier because multiple |
65 // initialization is not an issue while the barrier can be relatively costly | 65 // initialization is not an issue while the barrier can be relatively costly |
66 // given that this method is sometimes called in a tight loop. | 66 // given that this method is sometimes called in a tight loop. |
67 base::subtle::Atomic32 current_timing_enabled = | 67 base::subtle::Atomic32 current_timing_enabled = |
68 base::subtle::NoBarrier_Load(&timing_enabled); | 68 base::subtle::NoBarrier_Load(&timing_enabled); |
69 if (current_timing_enabled == UNDEFINED_TIMING) { | 69 if (current_timing_enabled == UNDEFINED_TIMING) { |
70 if (!CommandLine::InitializedForCurrentProcess()) | 70 if (!base::CommandLine::InitializedForCurrentProcess()) |
71 return true; | 71 return true; |
72 current_timing_enabled = | 72 current_timing_enabled = |
73 (CommandLine::ForCurrentProcess()->GetSwitchValueASCII( | 73 (base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII( |
74 switches::kProfilerTiming) == | 74 switches::kProfilerTiming) == |
75 switches::kProfilerTimingDisabledValue) | 75 switches::kProfilerTimingDisabledValue) |
76 ? DISABLED_TIMING | 76 ? DISABLED_TIMING |
77 : ENABLED_TIMING; | 77 : ENABLED_TIMING; |
78 base::subtle::NoBarrier_Store(&timing_enabled, current_timing_enabled); | 78 base::subtle::NoBarrier_Store(&timing_enabled, current_timing_enabled); |
79 } | 79 } |
80 return current_timing_enabled == ENABLED_TIMING; | 80 return current_timing_enabled == ENABLED_TIMING; |
81 } | 81 } |
82 | 82 |
83 } // namespace | 83 } // namespace |
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969 : process_id(base::GetCurrentProcId()) { | 969 : process_id(base::GetCurrentProcId()) { |
970 #else | 970 #else |
971 : process_id(0) { | 971 : process_id(0) { |
972 #endif | 972 #endif |
973 } | 973 } |
974 | 974 |
975 ProcessDataSnapshot::~ProcessDataSnapshot() { | 975 ProcessDataSnapshot::~ProcessDataSnapshot() { |
976 } | 976 } |
977 | 977 |
978 } // namespace tracked_objects | 978 } // namespace tracked_objects |
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