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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /js/src/vm/GeckoProfiler-inl.h | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/vm/GeckoProfiler-inl.h')
-rw-r--r-- | js/src/vm/GeckoProfiler-inl.h | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/js/src/vm/GeckoProfiler-inl.h b/js/src/vm/GeckoProfiler-inl.h new file mode 100644 index 0000000000..087a80022e --- /dev/null +++ b/js/src/vm/GeckoProfiler-inl.h @@ -0,0 +1,141 @@ +/* -*- 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 "js/ProfilingStack.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, const char* dynamicString, + JS::ProfilingCategoryPair categoryPair, uint32_t flags) { + profilingStack_ = GetContextProfilingStackIfEnabled(cx); + if (MOZ_LIKELY(!profilingStack_)) { +#ifdef DEBUG + profiler_ = nullptr; + spBefore_ = 0; +#endif + return; + } + +#ifdef DEBUG + profiler_ = &cx->geckoProfiler(); + spBefore_ = profiler_->stackPointer(); +#endif + + profilingStack_->pushLabelFrame(label, dynamicString, + /* sp = */ this, categoryPair, flags); +} + +MOZ_ALWAYS_INLINE +AutoGeckoProfilerEntry::~AutoGeckoProfilerEntry() { + if (MOZ_LIKELY(!profilingStack_)) { + return; + } + + profilingStack_->pop(); + MOZ_ASSERT(spBefore_ == profiler_->stackPointer()); +} + +MOZ_ALWAYS_INLINE +AutoGeckoProfilerEntry::AutoGeckoProfilerEntry( + JSContext* cx, const char* label, JS::ProfilingCategoryPair categoryPair, + uint32_t flags) + : AutoGeckoProfilerEntry(cx, label, /* dynamicString */ nullptr, + categoryPair, flags) {} + +MOZ_ALWAYS_INLINE +AutoJSMethodProfilerEntry::AutoJSMethodProfilerEntry(JSContext* cx, + const char* label, + const char* dynamicString) + : AutoGeckoProfilerEntry( + cx, label, dynamicString, JS::ProfilingCategoryPair::JS_Builtin, + uint32_t(ProfilingStackFrame::Flags::RELEVANT_FOR_JS) | + uint32_t(ProfilingStackFrame::Flags::STRING_TEMPLATE_METHOD)) {} + +MOZ_ALWAYS_INLINE +AutoJSConstructorProfilerEntry::AutoJSConstructorProfilerEntry( + JSContext* cx, const char* label) + : AutoGeckoProfilerEntry( + cx, label, "constructor", JS::ProfilingCategoryPair::JS_Builtin, + uint32_t(ProfilingStackFrame::Flags::RELEVANT_FOR_JS)) {} + +} // namespace js + +#endif // vm_GeckoProfiler_inl_h |