/* 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 "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 Activation::Activation(JSContext* cx, Kind kind)
: cx_(cx),
compartment_(cx->compartment()),
prev_(cx->activation_),
prevProfiling_(prev_ ? prev_->mostRecentProfiling() : nullptr),
hideScriptedCallerCount_(
0),
asyncStack_(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_.initialized() && !frameCache_.init(cx)) {
return nullptr;
}
return &frameCache_;
}
/* static */ inline mozilla::Maybe<LiveSavedFrameCache::FramePtr>
LiveSavedFrameCache::FramePtr::create(JSContext* cx,
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()) {
wasm::DebugFrame* wasmFrame = afp.asWasmDebugFrame();
#ifdef ENABLE_WASM_JSPI
if (cx->wasm().findStackForAddress(
cx, reinterpret_cast<uintptr_t>(wasmFrame))) {
return mozilla::Nothing();
}
#endif
return mozilla::Some(FramePtr(wasmFrame));
}
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