mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-21 01:05:45 +00:00
7f9d62dd87
Currently, JSAPI malloc calls can only allocate in MallocArena. Now there are calls for when the user intends to allocate a buffer that will be "stolen" by one of the NewString calls. Differential Revision: https://phabricator.services.mozilla.com/D25709 --HG-- extra : moz-landing-system : lando
66 lines
2.0 KiB
C++
66 lines
2.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
/* Low-level memory-allocation functions. */
|
|
|
|
#ifndef js_MemoryFunctions_h
|
|
#define js_MemoryFunctions_h
|
|
|
|
#include "mozilla/Assertions.h" // MOZ_ASSERT
|
|
#include "mozilla/Attributes.h" // MOZ_MUST_USE
|
|
|
|
#include <stddef.h> // size_t
|
|
|
|
#include "jstypes.h" // JS_PUBLIC_API
|
|
|
|
struct JSContext;
|
|
struct JSRuntime;
|
|
|
|
struct JSFreeOp {
|
|
protected:
|
|
JSRuntime* runtime_;
|
|
|
|
explicit JSFreeOp(JSRuntime* rt) : runtime_(rt) {}
|
|
|
|
public:
|
|
JSRuntime* runtime() const {
|
|
MOZ_ASSERT(runtime_);
|
|
return runtime_;
|
|
}
|
|
};
|
|
|
|
extern JS_PUBLIC_API void* JS_malloc(JSContext* cx, size_t nbytes);
|
|
|
|
extern JS_PUBLIC_API void* JS_realloc(JSContext* cx, void* p, size_t oldBytes,
|
|
size_t newBytes);
|
|
|
|
/**
|
|
* A wrapper for |js_free(p)| that may delay |js_free(p)| invocation as a
|
|
* performance optimization. |cx| may be nullptr.
|
|
*/
|
|
extern JS_PUBLIC_API void JS_free(JSContext* cx, void* p);
|
|
|
|
/**
|
|
* Same as above, but for buffers that will be used with the BYOB
|
|
* (Bring Your Own Buffer) JSString creation functions, such as
|
|
* JS_NewLatin1String and JS_NewUCString
|
|
*/
|
|
extern JS_PUBLIC_API void* JS_string_malloc(JSContext* cx, size_t nbytes);
|
|
|
|
extern JS_PUBLIC_API void* JS_string_realloc(JSContext* cx, void* p,
|
|
size_t oldBytes, size_t newBytes);
|
|
|
|
extern JS_PUBLIC_API void JS_string_free(JSContext* cx, void* p);
|
|
|
|
/**
|
|
* A wrapper for |js_free(p)| that may delay |js_free(p)| invocation as a
|
|
* performance optimization as specified by the given JSFreeOp instance.
|
|
*/
|
|
extern JS_PUBLIC_API void JS_freeop(JSFreeOp* fop, void* p);
|
|
|
|
extern JS_PUBLIC_API void JS_updateMallocCounter(JSContext* cx, size_t nbytes);
|
|
|
|
#endif /* js_MemoryFunctions_h */
|