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ec14db1abc
Reviewed By: kathryngray Differential Revision: D5433407 fbshipit-source-id: 104e8e5589d9c5e09c6702992eac3db2e6b4ab1a
64 lines
2.1 KiB
C++
64 lines
2.1 KiB
C++
// Copyright 2004-present Facebook. All Rights Reserved.
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#include "JSCPerfStats.h"
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#ifdef JSC_HAS_PERF_STATS_API
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#include <JavaScriptCore/JSPerfStats.h>
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#include <jschelpers/JSCHelpers.h>
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#include <jschelpers/Value.h>
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using namespace facebook::react;
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static JSValueRef nativeGetHeapStats(
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JSContextRef ctx,
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JSObjectRef function,
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JSObjectRef thisObject,
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size_t argumentCount,
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const JSValueRef arguments[],
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JSValueRef* exception) {
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JSHeapStats heapStats = {0};
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JSGetHeapStats(ctx, &heapStats);
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auto result = Object::create(ctx);
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result.setProperty("size", Value::makeNumber(ctx, heapStats.size));
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result.setProperty("extra_size", Value::makeNumber(ctx, heapStats.extraSize));
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result.setProperty("capacity", Value::makeNumber(ctx, heapStats.capacity));
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result.setProperty("object_count", Value::makeNumber(ctx, heapStats.objectCount));
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result.setProperty("object_size", Value::makeNumber(ctx, heapStats.objectSizeAfterLastCollect));
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result.setProperty("object_capacity", Value::makeNumber(ctx, heapStats.objectCapacityAfterLastCollect));
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result.setProperty("block_size", Value::makeNumber(ctx, heapStats.blockSize));
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result.setProperty("malloc_size", Value::makeNumber(ctx, heapStats.mallocSize));
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return static_cast<JSObjectRef>(result);
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}
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static JSValueRef nativeGetGCStats(
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JSContextRef ctx,
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JSObjectRef function,
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JSObjectRef thisObject,
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size_t argumentCount,
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const JSValueRef arguments[],
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JSValueRef* exception) {
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JSGCStats gcStats = {0};
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JSGetGCStats(ctx, &gcStats);
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auto result = Object::create(ctx);
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result.setProperty("last_full_gc_length", Value::makeNumber(ctx, gcStats.lastFullGCLength));
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result.setProperty("last_eden_gc_length", Value::makeNumber(ctx, gcStats.lastEdenGCLength));
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return static_cast<JSObjectRef>(result);
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}
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#endif
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namespace facebook {
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namespace react {
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void addJSCPerfStatsHooks(JSGlobalContextRef ctx) {
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#ifdef JSC_HAS_PERF_STATS_API
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installGlobalFunction(ctx, "nativeGetHeapStats", nativeGetHeapStats);
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installGlobalFunction(ctx, "nativeGetGCStats", nativeGetGCStats);
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#endif
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}
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} }
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