react-native/ReactCommon/cxxreact/JSCLegacyProfiler.cpp

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// Copyright 2004-present Facebook. All Rights Reserved.
#ifdef WITH_JSC_EXTRA_TRACING
#include <stdio.h>
#include <string.h>
#include <JavaScriptCore/JavaScript.h>
#include <JavaScriptCore/API/JSProfilerPrivate.h>
#include <jsc_legacy_profiler.h>
#include "JSCHelpers.h"
#include "JSCLegacyProfiler.h"
#include "Value.h"
static JSValueRef nativeProfilerStart(
JSContextRef ctx,
JSObjectRef function,
JSObjectRef thisObject,
size_t argumentCount,
const JSValueRef arguments[],
JSValueRef* exception) {
if (argumentCount < 1) {
if (exception) {
*exception = facebook::react::makeJSCException(
ctx,
"nativeProfilerStart: requires at least 1 argument");
}
return JSValueMakeUndefined(ctx);
}
JSStringRef title = JSValueToStringCopy(ctx, arguments[0], exception);
#if WITH_REACT_INTERNAL_SETTINGS
JSStartProfiling(ctx, title, false);
#else
JSStartProfiling(ctx, title);
#endif
JSStringRelease(title);
return JSValueMakeUndefined(ctx);
}
static JSValueRef nativeProfilerEnd(
JSContextRef ctx,
JSObjectRef function,
JSObjectRef thisObject,
size_t argumentCount,
const JSValueRef arguments[],
JSValueRef* exception) {
if (argumentCount < 1) {
if (exception) {
*exception = facebook::react::makeJSCException(
ctx,
"nativeProfilerEnd: requires at least 1 argument");
}
return JSValueMakeUndefined(ctx);
}
std::string writeLocation("/sdcard/");
if (argumentCount > 1) {
JSStringRef fileName = JSValueToStringCopy(ctx, arguments[1], exception);
writeLocation += facebook::react::String::ref(fileName).str();
JSStringRelease(fileName);
} else {
writeLocation += "profile.json";
}
JSStringRef title = JSValueToStringCopy(ctx, arguments[0], exception);
JSEndProfilingAndRender(ctx, title, writeLocation.c_str());
JSStringRelease(title);
return JSValueMakeUndefined(ctx);
}
namespace facebook {
namespace react {
void stopAndOutputProfilingFile(
JSContextRef ctx,
JSStringRef title,
const char *filename) {
JSEndProfilingAndRender(ctx, title, filename);
}
void addNativeProfilingHooks(JSGlobalContextRef ctx) {
// JSEnableByteCodeProfiling();
installGlobalFunction(ctx, "nativeProfilerStart", nativeProfilerStart);
installGlobalFunction(ctx, "nativeProfilerEnd", nativeProfilerEnd);
}
} }
#endif