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Bug 937317 - Manipulate the script settings stack from the RAII classes. r=bz

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This commit is contained in:
Bobby Holley 2013-12-06 12:01:42 -08:00
parent e509129d09
commit 41e9244836
2 changed files with 35 additions and 1 deletions
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26
dom/base/ScriptSettings.cpp
View File

@ -94,6 +94,8 @@ void DestroyScriptSettings()
AutoEntryScript::AutoEntryScript(nsIGlobalObject* aGlobalObject,
bool aIsMainThread,
JSContext* aCx)
: mStack(ScriptSettingsStack::Ref())
, mEntry(aGlobalObject, /* aCandidate = */ true)
{
MOZ_ASSERT(aGlobalObject);
if (!aCx) {
@ -114,18 +116,40 @@ AutoEntryScript::AutoEntryScript(nsIGlobalObject* aGlobalObject,
mCxPusher.Push(aCx);
}
mAc.construct(aCx, aGlobalObject->GetGlobalJSObject());
mStack.Push(&mEntry);
}
AutoEntryScript::~AutoEntryScript()
{
MOZ_ASSERT(mStack.Incumbent() == mEntry.mGlobalObject);
mStack.Pop();
}
AutoIncumbentScript::AutoIncumbentScript(nsIGlobalObject* aGlobalObject)
: mStack(ScriptSettingsStack::Ref())
, mEntry(aGlobalObject, /* aCandidate = */ false)
{
MOZ_ASSERT(aGlobalObject);
mStack.Push(&mEntry);
}
AutoIncumbentScript::~AutoIncumbentScript()
{
MOZ_ASSERT(mStack.Incumbent() == mEntry.mGlobalObject);
mStack.Pop();
}
AutoSystemCaller::AutoSystemCaller(bool aIsMainThread)
: mStack(ScriptSettingsStack::Ref())
{
if (aIsMainThread) {
mCxPusher.PushNull();
}
mStack.PushSystem();
}
AutoSystemCaller::~AutoSystemCaller()
{
mStack.Pop();
}
} // namespace dom

10
dom/base/ScriptSettings.h
View File

@ -27,6 +27,7 @@ namespace dom {
void InitScriptSettings();
void DestroyScriptSettings();
class ScriptSettingsStack;
struct ScriptSettingsStackEntry {
nsCOMPtr<nsIGlobalObject> mGlobalObject;
bool mIsCandidateEntryPoint;
@ -65,8 +66,11 @@ public:
bool aIsMainThread = NS_IsMainThread(),
// Note: aCx is mandatory off-main-thread.
JSContext* aCx = nullptr);
~AutoEntryScript();
private:
dom::ScriptSettingsStack& mStack;
dom::ScriptSettingsStackEntry mEntry;
nsCxPusher mCxPusher;
mozilla::Maybe<JSAutoCompartment> mAc; // This can de-Maybe-fy when mCxPusher
// goes away.
@ -78,6 +82,10 @@ private:
class AutoIncumbentScript {
public:
AutoIncumbentScript(nsIGlobalObject* aGlobalObject);
~AutoIncumbentScript();
private:
dom::ScriptSettingsStack& mStack;
dom::ScriptSettingsStackEntry mEntry;
};
/*
@ -88,7 +96,9 @@ public:
class AutoSystemCaller {
public:
AutoSystemCaller(bool aIsMainThread = NS_IsMainThread());
~AutoSystemCaller();
private:
dom::ScriptSettingsStack& mStack;
nsCxPusher mCxPusher;
};