1berry/nodejs
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

perf_hooks: make GC tracking state per-Environment

Browse Source 
Otherwise this is global state that may be subject to race
conditions e.g. when running `perf_hooks` inside of Worker threads.

Tracking the GC type is removed entirely since the variable was unused.

PR-URL: https://github.com/nodejs/node/pull/25053
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
This commit is contained in:
Anna Henningsen 2018-12-14 22:55:03 +01:00
parent cc0e1770d9
commit 8dfd757337
No known key found for this signature in database
GPG Key ID: 9C63F3A6CD2AD8F9
2 changed files with 11 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
src/node_perf.cc
View File

@ -42,9 +42,6 @@ const double timeOriginTimestamp = GetCurrentTimeInMicroseconds();
uint64_t performance_node_start;
uint64_t performance_v8_start;
uint64_t performance_last_gc_start_mark_ = 0;
GCType performance_last_gc_type_ = GCType::kGCTypeAll;
void performance_state::Mark(enum PerformanceMilestone milestone,
uint64_t ts) {
this->milestones[milestone] = ts;
@ -268,9 +265,10 @@ void PerformanceGCCallback(Environment* env, void* ptr) {
// Marks the start of a GC cycle
void MarkGarbageCollectionStart(Isolate* isolate,
GCType type,
GCCallbackFlags flags) {
performance_last_gc_start_mark_ = PERFORMANCE_NOW();
performance_last_gc_type_ = type;
GCCallbackFlags flags,
void* data) {
Environment* env = static_cast<Environment*>(data);
env->performance_state()->performance_last_gc_start_mark = PERFORMANCE_NOW();
}
// Marks the end of a GC cycle
@ -279,13 +277,14 @@ void MarkGarbageCollectionEnd(Isolate* isolate,
GCCallbackFlags flags,
void* data) {
Environment* env = static_cast<Environment*>(data);
performance_state* state = env->performance_state();
// If no one is listening to gc performance entries, do not create them.
if (!env->performance_state()->observers[NODE_PERFORMANCE_ENTRY_TYPE_GC])
if (!state->observers[NODE_PERFORMANCE_ENTRY_TYPE_GC])
return;
GCPerformanceEntry* entry =
new GCPerformanceEntry(env,
static_cast<PerformanceGCKind>(type),
performance_last_gc_start_mark_,
state->performance_last_gc_start_mark,
PERFORMANCE_NOW());
env->SetUnrefImmediate(PerformanceGCCallback,
entry);
@ -293,7 +292,8 @@ void MarkGarbageCollectionEnd(Isolate* isolate,
inline void SetupGarbageCollectionTracking(Environment* env) {
env->isolate()->AddGCPrologueCallback(MarkGarbageCollectionStart);
env->isolate()->AddGCPrologueCallback(MarkGarbageCollectionStart,
static_cast<void*>(env));
env->isolate()->AddGCEpilogueCallback(MarkGarbageCollectionEnd,
static_cast<void*>(env));
}

2
src/node_perf_common.h
View File

@ -75,6 +75,8 @@ class performance_state {
AliasedBuffer<double, v8::Float64Array> milestones;
AliasedBuffer<uint32_t, v8::Uint32Array> observers;
uint64_t performance_last_gc_start_mark = 0;
void Mark(enum PerformanceMilestone milestone,
uint64_t ts = PERFORMANCE_NOW());