Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 171 insertions, 0 deletions

diff --git a/js/src/vm/Activation-inl.h b/js/src/vm/Activation-inl.h
new file mode 100644
index 0000000000..76e054eb44
--- /dev/null
+++ b/js/src/vm/Activation-inl.h
@@ -0,0 +1,171 @@
+/* -*- 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 "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