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-rw-r--r--js/src/vm/GeckoProfiler-inl.h141
1 files changed, 141 insertions, 0 deletions
diff --git a/js/src/vm/GeckoProfiler-inl.h b/js/src/vm/GeckoProfiler-inl.h
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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 "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