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import KernelEx-4.5-Beta2
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UzixLS
@ -1,177 +1,94 @@
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#ifndef MOZ_MEMORY_WINDOWS
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# include <stdbool.h>
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#else
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# include <windows.h>
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# ifndef bool
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# define bool BOOL
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# endif
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#endif
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extern const char *_malloc_options;
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/*
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* jemalloc_stats() is not a stable interface. When using jemalloc_stats_t, be
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* sure that the compiled results of jemalloc.c are in sync with this header
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* file.
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*/
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typedef struct {
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/*
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* Run-time configuration settings.
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*/
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bool opt_abort; /* abort(3) on error? */
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bool opt_junk; /* Fill allocated/free memory with 0xa5/0x5a? */
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bool opt_utrace; /* Trace all allocation events? */
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bool opt_sysv; /* SysV semantics? */
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bool opt_xmalloc; /* abort(3) on OOM? */
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bool opt_zero; /* Fill allocated memory with 0x0? */
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size_t narenas; /* Number of arenas. */
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size_t balance_threshold; /* Arena contention rebalance threshold. */
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size_t quantum; /* Allocation quantum. */
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size_t small_max; /* Max quantum-spaced allocation size. */
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size_t large_max; /* Max sub-chunksize allocation size. */
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size_t chunksize; /* Size of each virtual memory mapping. */
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size_t dirty_max; /* Max dirty pages per arena. */
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size_t reserve_min; /* reserve_low callback threshold. */
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size_t reserve_max; /* Maximum reserve size before unmapping. */
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/*
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* Current memory usage statistics.
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*/
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size_t mapped; /* Bytes mapped (not necessarily committed). */
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size_t committed; /* Bytes committed (readable/writable). */
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size_t allocated; /* Bytes allocted (in use by application). */
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size_t dirty; /* Bytes dirty (committed unused pages). */
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size_t reserve_cur; /* Current memory reserve. */
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} jemalloc_stats_t;
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#ifndef MOZ_MEMORY_DARWIN
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void *malloc(size_t size);
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void *valloc(size_t size);
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void *calloc(size_t num, size_t size);
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void *realloc(void *ptr, size_t size);
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void free(void *ptr);
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#endif
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int posix_memalign(void **memptr, size_t alignment, size_t size);
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void *memalign(size_t alignment, size_t size);
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size_t malloc_usable_size(const void *ptr);
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void jemalloc_stats(jemalloc_stats_t *stats);
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/* The x*() functions never return NULL. */
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void *xmalloc(size_t size);
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void *xcalloc(size_t num, size_t size);
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void *xrealloc(void *ptr, size_t size);
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void *xmemalign(size_t alignment, size_t size);
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/*
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* The allocator maintains a memory reserve that is used to satisfy allocation
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* requests when no additional memory can be acquired from the operating
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* system. Under normal operating conditions, the reserve size is at least
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* reserve_min bytes. If the reserve is depleted or insufficient to satisfy an
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* allocation request, then condition notifications are sent to one or more of
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* the registered callback functions:
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*
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* RESERVE_CND_LOW: The reserve had to be used to satisfy an allocation
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* request, which dropped the reserve size below the
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* minimum. The callee should try to free memory in order
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* to restore the reserve.
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*
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* RESERVE_CND_CRIT: The reserve was not large enough to satisfy a pending
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* allocation request. Some callee must free adequate
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* memory in order to prevent application failure (unless
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* the condition spontaneously desists due to concurrent
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* deallocation).
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*
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* RESERVE_CND_FAIL: An allocation request could not be satisfied, despite all
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* attempts. The allocator is about to terminate the
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* application.
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*
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* The order in which the callback functions are called is only loosely
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* specified: in the absence of interposing callback
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* registrations/unregistrations, enabled callbacks will be called in an
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* arbitrary round-robin order.
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*
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* Condition notifications are sent to callbacks only while conditions exist.
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* For example, just before the allocator sends a RESERVE_CND_LOW condition
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* notification to a callback, the reserve is in fact depleted. However, due
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* to allocator concurrency, the reserve may have been restored by the time the
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* callback function executes. Furthermore, if the reserve is restored at some
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* point during the delivery of condition notifications to callbacks, no
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* further deliveries will occur, since the condition no longer exists.
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*
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* Callback functions can freely call back into the allocator (i.e. the
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* allocator releases all internal resources before calling each callback
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* function), though allocation is discouraged, since recursive callbacks are
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* likely to result, which places extra burden on the application to avoid
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* deadlock.
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*
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* Callback functions must be thread-safe, since it is possible that multiple
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* threads will call into the same callback function concurrently.
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*/
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/* Memory reserve condition types. */
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typedef enum {
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RESERVE_CND_LOW,
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RESERVE_CND_CRIT,
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RESERVE_CND_FAIL
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} reserve_cnd_t;
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/*
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* Reserve condition notification callback function type definition.
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*
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* Inputs:
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* ctx: Opaque application data, as passed to reserve_cb_register().
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* cnd: Condition type being delivered.
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* size: Allocation request size for the allocation that caused the condition.
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*/
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typedef void reserve_cb_t(void *ctx, reserve_cnd_t cnd, size_t size);
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/*
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* Register a callback function.
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*
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* Inputs:
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* cb: Callback function pointer.
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* ctx: Opaque application data, passed to cb().
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*
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* Output:
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* ret: If true, failure due to OOM; success otherwise.
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*/
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bool reserve_cb_register(reserve_cb_t *cb, void *ctx);
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/*
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* Unregister a callback function.
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*
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* Inputs:
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* cb: Callback function pointer.
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* ctx: Opaque application data, same as that passed to reserve_cb_register().
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*
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* Output:
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* ret: False upon success, true if the {cb,ctx} registration could not be
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* found.
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*/
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bool reserve_cb_unregister(reserve_cb_t *cb, void *ctx);
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/*
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* Get the current reserve size.
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*
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* ret: Current reserve size.
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*/
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size_t reserve_cur_get(void);
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/*
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* Get the minimum acceptable reserve size. If the reserve drops below this
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* value, the RESERVE_CND_LOW condition notification is sent to the callbacks.
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*
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* ret: Minimum acceptable reserve size.
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*/
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size_t reserve_min_get(void);
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/*
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* Set the minimum acceptable reserve size.
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*
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* min: Reserve threshold. This value may be internally rounded up.
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* ret: False if the reserve was successfully resized; true otherwise. Note
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* that failure to resize the reserve also results in a RESERVE_CND_LOW
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* condition.
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*/
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bool reserve_min_set(size_t min);
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/* -*- Mode: C; tab-width: 8; c-basic-offset: 8 -*- */
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/* vim:set softtabstop=8 shiftwidth=8: */
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/*-
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* Copyright (C) 2006-2008 Jason Evans <jasone@FreeBSD.org>.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice(s), this list of conditions and the following disclaimer as
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* the first lines of this file unmodified other than the possible
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* addition of one or more copyright notices.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice(s), this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _JEMALLOC_H_
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#define _JEMALLOC_H_
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#include <stddef.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef unsigned char jemalloc_bool;
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extern const char *_malloc_options;
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/*
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* jemalloc_stats() is not a stable interface. When using jemalloc_stats_t, be
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* sure that the compiled results of jemalloc.c are in sync with this header
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* file.
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*/
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typedef struct {
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/*
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* Run-time configuration settings.
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*/
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jemalloc_bool opt_abort; /* abort(3) on error? */
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jemalloc_bool opt_junk; /* Fill allocated/free memory with 0xa5/0x5a? */
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jemalloc_bool opt_utrace; /* Trace all allocation events? */
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jemalloc_bool opt_sysv; /* SysV semantics? */
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jemalloc_bool opt_xmalloc; /* abort(3) on OOM? */
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jemalloc_bool opt_zero; /* Fill allocated memory with 0x0? */
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size_t narenas; /* Number of arenas. */
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size_t balance_threshold; /* Arena contention rebalance threshold. */
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size_t quantum; /* Allocation quantum. */
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size_t small_max; /* Max quantum-spaced allocation size. */
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size_t large_max; /* Max sub-chunksize allocation size. */
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size_t chunksize; /* Size of each virtual memory mapping. */
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size_t dirty_max; /* Max dirty pages per arena. */
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/*
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* Current memory usage statistics.
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*/
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size_t mapped; /* Bytes mapped (not necessarily committed). */
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size_t committed; /* Bytes committed (readable/writable). */
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size_t allocated; /* Bytes allocted (in use by application). */
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size_t dirty; /* Bytes dirty (committed unused pages). */
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} jemalloc_stats_t;
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#ifndef MOZ_MEMORY_DARWIN
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void *malloc(size_t size);
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void *valloc(size_t size);
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void *calloc(size_t num, size_t size);
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void *realloc(void *ptr, size_t size);
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void free(void *ptr);
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#endif
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int posix_memalign(void **memptr, size_t alignment, size_t size);
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void *memalign(size_t alignment, size_t size);
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size_t malloc_usable_size(const void *ptr);
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void jemalloc_stats(jemalloc_stats_t *stats);
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /* _JEMALLOC_H_ */
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