74 lines
2.0 KiB
C++
74 lines
2.0 KiB
C++
// Copyright (c) 2004-present, Facebook, Inc.
|
|
|
|
// This source code is licensed under the MIT license found in the
|
|
// LICENSE file in the root directory of this source tree.
|
|
|
|
#include "JSCLegacyTracing.h"
|
|
|
|
#if defined(WITH_JSC_EXTRA_TRACING)
|
|
|
|
#include <fbsystrace.h>
|
|
#include <JavaScriptCore/API/JSProfilerPrivate.h>
|
|
#include <jschelpers/JSCHelpers.h>
|
|
#include <jschelpers/Value.h>
|
|
|
|
static const char *ENABLED_FBSYSTRACE_PROFILE_NAME = "__fbsystrace__";
|
|
|
|
using namespace facebook::react;
|
|
|
|
static int64_t int64FromJSValue(JSContextRef ctx, JSValueRef value, JSValueRef* exception) {
|
|
return static_cast<int64_t>(JSC_JSValueToNumber(ctx, value, exception));
|
|
}
|
|
|
|
static JSValueRef nativeTraceBeginLegacy(
|
|
JSContextRef ctx,
|
|
JSObjectRef function,
|
|
JSObjectRef thisObject,
|
|
size_t argumentCount,
|
|
const JSValueRef arguments[],
|
|
JSValueRef* exception) {
|
|
if (FBSYSTRACE_LIKELY(argumentCount >= 1)) {
|
|
uint64_t tag = int64FromJSValue(ctx, arguments[0], exception);
|
|
if (!fbsystrace_is_tracing(tag)) {
|
|
return Value::makeUndefined(ctx);
|
|
}
|
|
}
|
|
|
|
JSStartProfiling(ctx, String(ctx, ENABLED_FBSYSTRACE_PROFILE_NAME), true);
|
|
|
|
return Value::makeUndefined(ctx);
|
|
}
|
|
|
|
static JSValueRef nativeTraceEndLegacy(
|
|
JSContextRef ctx,
|
|
JSObjectRef function,
|
|
JSObjectRef thisObject,
|
|
size_t argumentCount,
|
|
const JSValueRef arguments[],
|
|
JSValueRef* exception) {
|
|
if (FBSYSTRACE_LIKELY(argumentCount >= 1)) {
|
|
uint64_t tag = int64FromJSValue(ctx, arguments[0], exception);
|
|
if (!fbsystrace_is_tracing(tag)) {
|
|
return Value::makeUndefined(ctx);
|
|
}
|
|
}
|
|
|
|
JSEndProfiling(ctx, String(ctx, ENABLED_FBSYSTRACE_PROFILE_NAME));
|
|
|
|
return Value::makeUndefined(ctx);
|
|
}
|
|
|
|
#endif
|
|
|
|
namespace facebook {
|
|
namespace react {
|
|
|
|
void addNativeTracingLegacyHooks(JSGlobalContextRef ctx) {
|
|
#if defined(WITH_JSC_EXTRA_TRACING)
|
|
installGlobalFunction(ctx, "nativeTraceBeginLegacy", nativeTraceBeginLegacy);
|
|
installGlobalFunction(ctx, "nativeTraceEndLegacy", nativeTraceEndLegacy);
|
|
#endif
|
|
}
|
|
|
|
} }
|