PerformanceMark.cpp [plain text]
#include "config.h"
#include "PerformanceMark.h"
#include "DOMWindow.h"
#include "DOMWrapperWorld.h"
#include "Document.h"
#include "MessagePort.h"
#include "Performance.h"
#include "PerformanceMarkOptions.h"
#include "PerformanceUserTiming.h"
#include "SerializedScriptValue.h"
#include "WorkerGlobalScope.h"
namespace WebCore {
static double performanceNow(ScriptExecutionContext& scriptExecutionContext)
{
if (is<Document>(scriptExecutionContext)) {
if (auto window = downcast<Document>(scriptExecutionContext).domWindow())
return window->performance().now();
return 0;
}
if (is<WorkerGlobalScope>(scriptExecutionContext))
return downcast<WorkerGlobalScope>(scriptExecutionContext).performance().now();
return 0;
}
ExceptionOr<Ref<PerformanceMark>> PerformanceMark::create(JSC::JSGlobalObject& globalObject, ScriptExecutionContext& scriptExecutionContext, const String& name, Optional<PerformanceMarkOptions>&& markOptions)
{
if (is<Document>(scriptExecutionContext) && PerformanceUserTiming::isRestrictedMarkName(name))
return Exception { SyntaxError };
double startTime;
JSC::JSValue detail;
if (markOptions) {
if (markOptions->startTime) {
if (*markOptions->startTime < 0)
return Exception { TypeError };
startTime = *markOptions->startTime;
} else
startTime = performanceNow(scriptExecutionContext);
if (markOptions->detail.isUndefined())
detail = JSC::jsNull();
else
detail = markOptions->detail;
} else {
startTime = performanceNow(scriptExecutionContext);
detail = JSC::jsNull();
}
Vector<RefPtr<MessagePort>> ignoredMessagePorts;
auto serializedDetail = SerializedScriptValue::create(globalObject, detail, { }, ignoredMessagePorts);
if (serializedDetail.hasException())
return serializedDetail.releaseException();
return adoptRef(*new PerformanceMark(name, startTime, serializedDetail.releaseReturnValue()));
}
PerformanceMark::PerformanceMark(const String& name, double startTime, Ref<SerializedScriptValue>&& serializedDetail)
: PerformanceEntry(name, startTime, startTime)
, m_serializedDetail(WTFMove(serializedDetail))
{
}
PerformanceMark::~PerformanceMark() = default;
JSC::JSValue PerformanceMark::detail(JSC::JSGlobalObject& globalObject)
{
return m_serializedDetail->deserialize(globalObject, &globalObject);
}
}