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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim: set ts=8 sts=4 et sw=4 tw=99:
* 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/Runtime.h"
namespace js {
inline void
GeckoProfilerThread::updatePC(JSContext* cx, JSScript* script, jsbytecode* pc)
{
if (!cx->runtime()->geckoProfiler().enabled())
return;
uint32_t sp = pseudoStack_->stackPointer;
if (sp - 1 < PseudoStack::MaxEntries) {
MOZ_ASSERT(sp > 0);
MOZ_ASSERT(pseudoStack_->entries[sp - 1].rawScript() == script);
pseudoStack_->entries[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 MOZ_GUARD_OBJECT_NOTIFIER_PARAM);
~AutoSuppressProfilerSampling();
private:
JSContext* cx_;
bool previouslyEnabled_;
JSRuntime::AutoProhibitActiveContextChange prohibitContextChange_;
MOZ_DECL_USE_GUARD_OBJECT_NOTIFIER
};
MOZ_ALWAYS_INLINE
GeckoProfilerEntryMarker::GeckoProfilerEntryMarker(JSContext* cx,
JSScript* script
MOZ_GUARD_OBJECT_NOTIFIER_PARAM_IN_IMPL)
: profiler_(&cx->geckoProfiler())
{
MOZ_GUARD_OBJECT_NOTIFIER_INIT;
if (MOZ_LIKELY(!profiler_->installed())) {
profiler_ = nullptr;
return;
}
#ifdef DEBUG
spBefore_ = profiler_->stackPointer();
#endif
// We want to push a CPP frame so the profiler can correctly order JS and native stacks.
// Only the sp value is important.
profiler_->pseudoStack_->pushCppFrame(
/* label = */ "", /* dynamicString = */ nullptr, /* sp = */ this, /* line = */ 0,
ProfileEntry::Kind::CPP_MARKER_FOR_JS, ProfileEntry::Category::OTHER);
profiler_->pseudoStack_->pushJsFrame(
"js::RunScript", /* dynamicString = */ nullptr, script, script->code());
}
MOZ_ALWAYS_INLINE
GeckoProfilerEntryMarker::~GeckoProfilerEntryMarker()
{
if (MOZ_LIKELY(profiler_ == nullptr))
return;
profiler_->pseudoStack_->pop(); // the JS frame
profiler_->pseudoStack_->pop(); // the BEGIN_PSEUDO_JS frame
MOZ_ASSERT(spBefore_ == profiler_->stackPointer());
}
MOZ_ALWAYS_INLINE
AutoGeckoProfilerEntry::AutoGeckoProfilerEntry(JSContext* cx, const char* label,
ProfileEntry::Category category
MOZ_GUARD_OBJECT_NOTIFIER_PARAM_IN_IMPL)
: profiler_(&cx->geckoProfiler())
{
MOZ_GUARD_OBJECT_NOTIFIER_INIT;
if (MOZ_LIKELY(!profiler_->installed())) {
profiler_ = nullptr;
return;
}
#ifdef DEBUG
spBefore_ = profiler_->stackPointer();
#endif
profiler_->pseudoStack_->pushCppFrame(label,
/* dynamicString = */ nullptr,
/* sp = */ this,
/* line = */ 0,
ProfileEntry::Kind::CPP_NORMAL,
category);
}
MOZ_ALWAYS_INLINE
AutoGeckoProfilerEntry::~AutoGeckoProfilerEntry()
{
if (MOZ_LIKELY(!profiler_))
return;
profiler_->pseudoStack_->pop();
MOZ_ASSERT(spBefore_ == profiler_->stackPointer());
}
} // namespace js
#endif // vm_GeckoProfiler_inl_h
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