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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_Activation_inl_h
#define vm_Activation_inl_h
#include "vm/Activation.h"
#include "mozilla/Assertions.h" // MOZ_ASSERT{,_IF}, MOZ_CRASH
#include "mozilla/Likely.h" // MOZ_UNLIKELY
#include "mozilla/Maybe.h" // mozilla::Maybe
#include "jit/CalleeToken.h" // js::jit::CalleeToken
#include "js/Debug.h" // JS::dbg::AutoEntryMonitor
#include "vm/FrameIter.h" // js::FrameIter
#include "vm/JitActivation.h" // js::jit::JitActivation
#include "vm/JSContext.h" // JSContext
#include "vm/Stack.h" // js::AbstractFramePtr
namespace js {
inline ActivationEntryMonitor::ActivationEntryMonitor(JSContext* cx)
: cx_(cx), entryMonitor_(cx->entryMonitor) {
cx->entryMonitor = nullptr;
}
inline ActivationEntryMonitor::ActivationEntryMonitor(
JSContext* cx, InterpreterFrame* entryFrame)
: ActivationEntryMonitor(cx) {
if (MOZ_UNLIKELY(entryMonitor_)) {
init(cx, entryFrame);
}
}
inline ActivationEntryMonitor::ActivationEntryMonitor(
JSContext* cx, jit::CalleeToken entryToken)
: ActivationEntryMonitor(cx) {
if (MOZ_UNLIKELY(entryMonitor_)) {
init(cx, entryToken);
}
}
inline ActivationEntryMonitor::~ActivationEntryMonitor() {
if (entryMonitor_) {
entryMonitor_->Exit(cx_);
}
cx_->entryMonitor = entryMonitor_;
}
inline Activation::Activation(JSContext* cx, Kind kind)
: cx_(cx),
compartment_(cx->compartment()),
prev_(cx->activation_),
prevProfiling_(prev_ ? prev_->mostRecentProfiling() : nullptr),
hideScriptedCallerCount_(0),
frameCache_(cx),
asyncStack_(cx, cx->asyncStackForNewActivations()),
asyncCause_(cx->asyncCauseForNewActivations),
asyncCallIsExplicit_(cx->asyncCallIsExplicit),
kind_(kind) {
cx->asyncStackForNewActivations() = nullptr;
cx->asyncCauseForNewActivations = nullptr;
cx->asyncCallIsExplicit = false;
cx->activation_ = this;
}
inline Activation::~Activation() {
MOZ_ASSERT_IF(isProfiling(), this != cx_->profilingActivation_);
MOZ_ASSERT(cx_->activation_ == this);
MOZ_ASSERT(hideScriptedCallerCount_ == 0);
cx_->activation_ = prev_;
cx_->asyncCauseForNewActivations = asyncCause_;
cx_->asyncStackForNewActivations() = asyncStack_;
cx_->asyncCallIsExplicit = asyncCallIsExplicit_;
}
inline bool Activation::isProfiling() const {
if (isInterpreter()) {
return asInterpreter()->isProfiling();
}
MOZ_ASSERT(isJit());
return asJit()->isProfiling();
}
inline Activation* Activation::mostRecentProfiling() {
if (isProfiling()) {
return this;
}
return prevProfiling_;
}
inline LiveSavedFrameCache* Activation::getLiveSavedFrameCache(JSContext* cx) {
if (!frameCache_.get().initialized() && !frameCache_.get().init(cx)) {
return nullptr;
}
return frameCache_.address();
}
/* static */ inline mozilla::Maybe<LiveSavedFrameCache::FramePtr>
LiveSavedFrameCache::FramePtr::create(const FrameIter& iter) {
if (iter.done()) {
return mozilla::Nothing();
}
if (iter.isPhysicalJitFrame()) {
return mozilla::Some(FramePtr(iter.physicalJitFrame()));
}
if (!iter.hasUsableAbstractFramePtr()) {
return mozilla::Nothing();
}
auto afp = iter.abstractFramePtr();
if (afp.isInterpreterFrame()) {
return mozilla::Some(FramePtr(afp.asInterpreterFrame()));
}
if (afp.isWasmDebugFrame()) {
return mozilla::Some(FramePtr(afp.asWasmDebugFrame()));
}
if (afp.isRematerializedFrame()) {
return mozilla::Some(FramePtr(afp.asRematerializedFrame()));
}
MOZ_CRASH("unexpected frame type");
}
struct LiveSavedFrameCache::FramePtr::HasCachedMatcher {
template <typename Frame>
bool operator()(Frame* f) const {
return f->hasCachedSavedFrame();
}
};
inline bool LiveSavedFrameCache::FramePtr::hasCachedSavedFrame() const {
return ptr.match(HasCachedMatcher());
}
struct LiveSavedFrameCache::FramePtr::SetHasCachedMatcher {
template <typename Frame>
void operator()(Frame* f) {
f->setHasCachedSavedFrame();
}
};
inline void LiveSavedFrameCache::FramePtr::setHasCachedSavedFrame() {
ptr.match(SetHasCachedMatcher());
}
struct LiveSavedFrameCache::FramePtr::ClearHasCachedMatcher {
template <typename Frame>
void operator()(Frame* f) {
f->clearHasCachedSavedFrame();
}
};
inline void LiveSavedFrameCache::FramePtr::clearHasCachedSavedFrame() {
ptr.match(ClearHasCachedMatcher());
}
inline bool Activation::hasWasmExitFP() const {
return isJit() && asJit()->hasWasmExitFP();
}
} // namespace js
#endif // vm_Activation_inl_h
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