react-native/ReactCommon/cxxreact/JSCPerfStats.cpp

70 lines
2.2 KiB
C++

// Copyright 2004-present Facebook. All Rights Reserved.
#include "JSCPerfStats.h"
#ifdef JSC_HAS_PERF_STATS_API
#include <JavaScriptCore/JSPerfStats.h>
#include <jschelpers/JSCHelpers.h>
#include <jschelpers/Value.h>
using namespace facebook::react;
static JSValueRef nativeGetHeapStats(
JSContextRef ctx,
JSObjectRef function,
JSObjectRef thisObject,
size_t argumentCount,
const JSValueRef arguments[],
JSValueRef* exception) {
JSHeapStats heapStats = {0};
JSGetHeapStats(ctx, &heapStats);
auto result = facebook::react::Object::create(ctx);
result.setProperty("size", {ctx, Value::makeNumber(ctx, heapStats.size)});
result.setProperty("extra_size", {ctx, Value::makeNumber(ctx, heapStats.extraSize)});
result.setProperty("capacity", {ctx, Value::makeNumber(ctx, heapStats.capacity)});
result.setProperty("object_count", {ctx, Value::makeNumber(ctx, heapStats.objectCount)});
result.setProperty("object_size", {ctx, Value::makeNumber(ctx, heapStats.objectSizeAfterLastCollect)});
result.setProperty("object_capacity", {ctx, Value::makeNumber(ctx, heapStats.objectCapacityAfterLastCollect)});
result.setProperty("block_size", {ctx, Value::makeNumber(ctx, heapStats.blockSize)});
result.setProperty("malloc_size", {ctx, Value::makeNumber(ctx, heapStats.mallocSize)});
return (JSObjectRef) result;
}
static JSValueRef nativeGetGCStats(
JSContextRef ctx,
JSObjectRef function,
JSObjectRef thisObject,
size_t argumentCount,
const JSValueRef arguments[],
JSValueRef* exception) {
JSGCStats gcStats = {0};
JSGetGCStats(ctx, &gcStats);
auto result = facebook::react::Object::create(ctx);
result.setProperty(
"last_full_gc_length",
{ctx, Value::makeNumber(ctx, gcStats.lastFullGCLength)});
result.setProperty(
"last_eden_gc_length",
{ctx, Value::makeNumber(ctx, gcStats.lastEdenGCLength)});
return (JSObjectRef) result;
}
#endif
namespace facebook {
namespace react {
void addJSCPerfStatsHooks(JSGlobalContextRef ctx) {
#ifdef JSC_HAS_PERF_STATS_API
installGlobalFunction(ctx, "nativeGetHeapStats", nativeGetHeapStats);
installGlobalFunction(ctx, "nativeGetGCStats", nativeGetGCStats);
#endif
}
} }