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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: set ts=8 sts=2 et sw=2 tw=80:
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef vm_GeckoProfiler_inl_h
#define vm_GeckoProfiler_inl_h
#include "vm/GeckoProfiler.h"
#include "vm/JSContext.h"
#include "vm/Realm.h"
#include "vm/Runtime.h"
namespace js {
inline void GeckoProfilerThread::updatePC(JSContext* cx, JSScript* script,
jsbytecode* pc) {
if (!cx->runtime()->geckoProfiler().enabled()) {
return;
}
uint32_t sp = profilingStack_->stackPointer;
if (sp - 1 < profilingStack_->stackCapacity()) {
MOZ_ASSERT(sp > 0);
MOZ_ASSERT(profilingStack_->frames[sp - 1].rawScript() == script);
profilingStack_->frames[sp - 1].setPC(pc);
}
}
/*
* This class is used to suppress profiler sampling during
* critical sections where stack state is not valid.
*/
class MOZ_RAII AutoSuppressProfilerSampling {
public:
explicit AutoSuppressProfilerSampling(JSContext* cx);
~AutoSuppressProfilerSampling();
private:
JSContext* cx_;
bool previouslyEnabled_;
};
MOZ_ALWAYS_INLINE
GeckoProfilerEntryMarker::GeckoProfilerEntryMarker(JSContext* cx,
JSScript* script)
: profiler_(&cx->geckoProfiler()) {
if (MOZ_LIKELY(!profiler_->infraInstalled())) {
profiler_ = nullptr;
#ifdef DEBUG
spBefore_ = 0;
#endif
return;
}
#ifdef DEBUG
spBefore_ = profiler_->stackPointer();
#endif
// Push an sp marker frame so the profiler can correctly order JS and native
// stacks.
profiler_->profilingStack_->pushSpMarkerFrame(this);
profiler_->profilingStack_->pushJsFrame(
"js::RunScript",
/* dynamicString = */ nullptr, script, script->code(),
script->realm()->creationOptions().profilerRealmID());
}
MOZ_ALWAYS_INLINE
GeckoProfilerEntryMarker::~GeckoProfilerEntryMarker() {
if (MOZ_LIKELY(profiler_ == nullptr)) {
return;
}
profiler_->profilingStack_->pop(); // the JS frame
profiler_->profilingStack_->pop(); // the SP_MARKER frame
MOZ_ASSERT(spBefore_ == profiler_->stackPointer());
}
MOZ_ALWAYS_INLINE
AutoGeckoProfilerEntry::AutoGeckoProfilerEntry(
JSContext* cx, const char* label, JS::ProfilingCategoryPair categoryPair,
uint32_t flags)
: profiler_(&cx->geckoProfiler()) {
if (MOZ_LIKELY(!profiler_->infraInstalled())) {
profiler_ = nullptr;
#ifdef DEBUG
spBefore_ = 0;
#endif
return;
}
#ifdef DEBUG
spBefore_ = profiler_->stackPointer();
#endif
profiler_->profilingStack_->pushLabelFrame(label,
/* dynamicString = */ nullptr,
/* sp = */ this, categoryPair,
flags);
}
MOZ_ALWAYS_INLINE
AutoGeckoProfilerEntry::~AutoGeckoProfilerEntry() {
if (MOZ_LIKELY(!profiler_)) {
return;
}
profiler_->profilingStack_->pop();
MOZ_ASSERT(spBefore_ == profiler_->stackPointer());
}
} // namespace js
#endif // vm_GeckoProfiler_inl_h
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