Line data    Source code

       1             : // Copyright 2016 the V8 project authors. All rights reserved.
       2             : // Use of this source code is governed by a BSD-style license that can be
       3             : // found in the LICENSE file.
       4             : 
       5             : #include "src/tracing/tracing-category-observer.h"
       6             : 
       7             : #include "src/flags.h"
       8             : #include "src/tracing/trace-event.h"
       9             : #include "src/v8.h"
      10             : 
      11             : namespace v8 {
      12             : namespace tracing {
      13             : 
      14             : TracingCategoryObserver* TracingCategoryObserver::instance_ = nullptr;
      15             : 
      16       53977 : void TracingCategoryObserver::SetUp() {
      17      107954 :   TracingCategoryObserver::instance_ = new TracingCategoryObserver();
      18       53977 :   v8::internal::V8::GetCurrentPlatform()
      19       53977 :       ->GetTracingController()
      20       53977 :       ->AddTraceStateObserver(TracingCategoryObserver::instance_);
      21       53977 :   TRACE_EVENT_WARMUP_CATEGORY(TRACE_DISABLED_BY_DEFAULT("v8.runtime_stats"));
      22       53977 :   TRACE_EVENT_WARMUP_CATEGORY(
      23             :       TRACE_DISABLED_BY_DEFAULT("v8.runtime_stats_sampling"));
      24       53977 :   TRACE_EVENT_WARMUP_CATEGORY(TRACE_DISABLED_BY_DEFAULT("v8.gc_stats"));
      25       53977 :   TRACE_EVENT_WARMUP_CATEGORY(TRACE_DISABLED_BY_DEFAULT("v8.ic_stats"));
      26       53977 : }
      27             : 
      28       53151 : void TracingCategoryObserver::TearDown() {
      29       53151 :   v8::internal::V8::GetCurrentPlatform()
      30       53151 :       ->GetTracingController()
      31       53151 :       ->RemoveTraceStateObserver(TracingCategoryObserver::instance_);
      32       53151 :   delete TracingCategoryObserver::instance_;
      33       53151 : }
      34             : 
      35           0 : void TracingCategoryObserver::OnTraceEnabled() {
      36             :   bool enabled = false;
      37           0 :   TRACE_EVENT_CATEGORY_GROUP_ENABLED(
      38             :       TRACE_DISABLED_BY_DEFAULT("v8.runtime_stats"), &enabled);
      39           0 :   if (enabled) {
      40           0 :     v8::internal::FLAG_runtime_stats |= ENABLED_BY_TRACING;
      41             :   }
      42           0 :   TRACE_EVENT_CATEGORY_GROUP_ENABLED(
      43             :       TRACE_DISABLED_BY_DEFAULT("v8.runtime_stats_sampling"), &enabled);
      44           0 :   if (enabled) {
      45           0 :     v8::internal::FLAG_runtime_stats |= ENABLED_BY_SAMPLING;
      46             :   }
      47           0 :   TRACE_EVENT_CATEGORY_GROUP_ENABLED(TRACE_DISABLED_BY_DEFAULT("v8.gc_stats"),
      48             :                                      &enabled);
      49           0 :   if (enabled) {
      50           0 :     v8::internal::FLAG_gc_stats |= ENABLED_BY_TRACING;
      51             :   }
      52           0 :   TRACE_EVENT_CATEGORY_GROUP_ENABLED(TRACE_DISABLED_BY_DEFAULT("v8.ic_stats"),
      53             :                                      &enabled);
      54           0 :   if (enabled) {
      55           0 :     v8::internal::FLAG_ic_stats |= ENABLED_BY_TRACING;
      56             :   }
      57           0 : }
      58             : 
      59           0 : void TracingCategoryObserver::OnTraceDisabled() {
      60             :   v8::internal::FLAG_runtime_stats &=
      61           0 :       ~(ENABLED_BY_TRACING | ENABLED_BY_SAMPLING);
      62           0 :   v8::internal::FLAG_gc_stats &= ~ENABLED_BY_TRACING;
      63           0 :   v8::internal::FLAG_ic_stats &= ~ENABLED_BY_TRACING;
      64           0 : }
      65             : 
      66             : }  // namespace tracing
      67             : }  // namespace v8