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JSBasePrivate.h
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82 lines (73 loc) · 3.34 KB
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/*
* Copyright (C) 2008 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef JSBasePrivate_h
#define JSBasePrivate_h
#include <JavaScriptCore/JSBase.h>
#include <JavaScriptCore/WebKitAvailability.h>
#ifdef __cplusplus
extern "C" {
#endif
/*!
@function
@abstract Reports an object's non-GC memory payload to the garbage collector.
@param ctx The execution context to use.
@param size The payload's size, in bytes.
@discussion Use this function to notify the garbage collector that a GC object
owns a large non-GC memory region. Calling this function will encourage the
garbage collector to collect soon, hoping to reclaim that large non-GC memory
region.
*/
JS_EXPORT void JSReportExtraMemoryCost(JSContextRef ctx, size_t size) JSC_API_AVAILABLE(macos(10.6), ios(7.0));
JS_EXPORT void JSDisableGCTimer(void);
#if !defined(__APPLE__) && !defined(WIN32) && !defined(_WIN32)
/*!
@function JSConfigureSignalForGC
@abstract Configure signals for GC in non-Apple and non-Windows platforms.
@param signal The signal number to use.
@result true if the signal is successfully configured, otherwise false.
@discussion Call this function before any of JSC initialization starts. Otherwise, it fails.
*/
JS_EXPORT bool JSConfigureSignalForGC(int signal);
#endif
/*!
@function
@abstract Produces an object with various statistics about current memory usage.
@param ctx The execution context to use.
@result An object containing GC heap status data.
@discussion Specifically, the result object has the following integer-valued fields:
heapSize: current size of heap
heapCapacity: current capacity of heap
extraMemorySize: amount of non-GC memory referenced by GC objects (included in heap size / capacity)
objectCount: current count of GC objects
protectedObjectCount: current count of protected GC objects
globalObjectCount: current count of global GC objects
protectedGlobalObjectCount: current count of protected global GC objects
objectTypeCounts: object with GC object types as keys and their current counts as values
*/
JS_EXPORT JSObjectRef JSGetMemoryUsageStatistics(JSContextRef ctx);
#ifdef __cplusplus
}
#endif
#endif /* JSBasePrivate_h */