JSMainThreadExecState.h [plain text]
#pragma once
#include "CustomElementReactionQueue.h"
#include "JSDOMBinding.h"
#include <runtime/CatchScope.h>
#include <runtime/Completion.h>
#include <runtime/Microtask.h>
#include <wtf/MainThread.h>
namespace WebCore {
class InspectorInstrumentationCookie;
class ScriptExecutionContext;
class JSMainThreadExecState {
WTF_MAKE_NONCOPYABLE(JSMainThreadExecState);
friend class JSMainThreadNullState;
public:
static JSC::ExecState* currentState()
{
ASSERT(isMainThread());
return s_mainThreadState;
};
static JSC::JSValue call(JSC::ExecState* exec, JSC::JSValue functionObject, JSC::CallType callType, const JSC::CallData& callData, JSC::JSValue thisValue, const JSC::ArgList& args, NakedPtr<JSC::Exception>& returnedException)
{
JSMainThreadExecState currentState(exec);
return JSC::call(exec, functionObject, callType, callData, thisValue, args, returnedException);
};
static JSC::JSValue evaluate(JSC::ExecState* exec, const JSC::SourceCode& source, JSC::JSValue thisValue, NakedPtr<JSC::Exception>& returnedException)
{
JSMainThreadExecState currentState(exec);
return JSC::evaluate(exec, source, thisValue, returnedException);
};
static JSC::JSValue evaluate(JSC::ExecState* exec, const JSC::SourceCode& source, JSC::JSValue thisValue = JSC::JSValue())
{
NakedPtr<JSC::Exception> unused;
return evaluate(exec, source, thisValue, unused);
};
static JSC::JSValue profiledCall(JSC::ExecState* exec, JSC::ProfilingReason reason, JSC::JSValue functionObject, JSC::CallType callType, const JSC::CallData& callData, JSC::JSValue thisValue, const JSC::ArgList& args, NakedPtr<JSC::Exception>& returnedException)
{
JSMainThreadExecState currentState(exec);
return JSC::profiledCall(exec, reason, functionObject, callType, callData, thisValue, args, returnedException);
}
static JSC::JSValue profiledEvaluate(JSC::ExecState* exec, JSC::ProfilingReason reason, const JSC::SourceCode& source, JSC::JSValue thisValue, NakedPtr<JSC::Exception>& returnedException)
{
JSMainThreadExecState currentState(exec);
return JSC::profiledEvaluate(exec, reason, source, thisValue, returnedException);
}
static JSC::JSValue profiledEvaluate(JSC::ExecState* exec, JSC::ProfilingReason reason, const JSC::SourceCode& source, JSC::JSValue thisValue = JSC::JSValue())
{
NakedPtr<JSC::Exception> unused;
return profiledEvaluate(exec, reason, source, thisValue, unused);
}
static void runTask(JSC::ExecState* exec, JSC::Microtask& task)
{
JSMainThreadExecState currentState(exec);
task.run(exec);
}
static JSC::JSInternalPromise& loadModule(JSC::ExecState& state, const String& moduleName, JSC::JSValue scriptFetcher)
{
JSMainThreadExecState currentState(&state);
return *JSC::loadModule(&state, moduleName, scriptFetcher);
}
static JSC::JSInternalPromise& loadModule(JSC::ExecState& state, const JSC::SourceCode& sourceCode, JSC::JSValue scriptFetcher)
{
JSMainThreadExecState currentState(&state);
return *JSC::loadModule(&state, sourceCode, scriptFetcher);
}
static JSC::JSValue linkAndEvaluateModule(JSC::ExecState& state, const JSC::Identifier& moduleKey, JSC::JSValue scriptFetcher, NakedPtr<JSC::Exception>& returnedException)
{
JSC::VM& vm = state.vm();
auto scope = DECLARE_CATCH_SCOPE(vm);
JSMainThreadExecState currentState(&state);
auto returnValue = JSC::linkAndEvaluateModule(&state, moduleKey, scriptFetcher);
if (UNLIKELY(scope.exception())) {
returnedException = scope.exception();
scope.clearException();
return JSC::jsUndefined();
}
return returnValue;
}
static InspectorInstrumentationCookie instrumentFunctionCall(ScriptExecutionContext*, JSC::CallType, const JSC::CallData&);
static InspectorInstrumentationCookie instrumentFunctionConstruct(ScriptExecutionContext*, JSC::ConstructType, const JSC::ConstructData&);
private:
explicit JSMainThreadExecState(JSC::ExecState* exec)
: m_previousState(s_mainThreadState)
, m_lock(exec)
{
ASSERT(isMainThread());
s_mainThreadState = exec;
};
~JSMainThreadExecState()
{
JSC::VM& vm = s_mainThreadState->vm();
auto scope = DECLARE_CATCH_SCOPE(vm);
ASSERT(isMainThread());
scope.assertNoException();
JSC::ExecState* state = s_mainThreadState;
bool didExitJavaScript = s_mainThreadState && !m_previousState;
s_mainThreadState = m_previousState;
if (didExitJavaScript)
didLeaveScriptContext(state);
}
template<typename Type, Type jsType, typename DataType> static InspectorInstrumentationCookie instrumentFunctionInternal(ScriptExecutionContext*, Type, const DataType&);
WEBCORE_EXPORT static JSC::ExecState* s_mainThreadState;
JSC::ExecState* m_previousState;
JSC::JSLockHolder m_lock;
static void didLeaveScriptContext(JSC::ExecState*);
};
class JSMainThreadNullState {
WTF_MAKE_NONCOPYABLE(JSMainThreadNullState);
public:
explicit JSMainThreadNullState()
: m_previousState(JSMainThreadExecState::s_mainThreadState)
{
ASSERT(isMainThread());
JSMainThreadExecState::s_mainThreadState = nullptr;
}
~JSMainThreadNullState()
{
ASSERT(isMainThread());
JSMainThreadExecState::s_mainThreadState = m_previousState;
}
private:
JSC::ExecState* m_previousState;
CustomElementReactionStack m_customElementReactionStack;
};
JSC::JSValue functionCallHandlerFromAnyThread(JSC::ExecState*, JSC::JSValue functionObject, JSC::CallType, const JSC::CallData&, JSC::JSValue thisValue, const JSC::ArgList& args, NakedPtr<JSC::Exception>& returnedException);
JSC::JSValue evaluateHandlerFromAnyThread(JSC::ExecState*, const JSC::SourceCode&, JSC::JSValue thisValue, NakedPtr<JSC::Exception>& returnedException);
}