mirror of
https://github.com/netwide-assembler/nasm
synced 2026-08-26 16:23:04 -04:00
36e2a0c887
Define standard mempools reclaimed at various stages. Fix various problems with the mempool allocator. Signed-off-by: H. Peter Anvin <hpa@zytor.com>
86 lines
3.3 KiB
C
86 lines
3.3 KiB
C
/* ----------------------------------------------------------------------- *
|
|
*
|
|
* Copyright 2017-2018 The NASM Authors - All Rights Reserved
|
|
* See the file AUTHORS included with the NASM distribution for
|
|
* the specific copyright holders.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following
|
|
* conditions are met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * 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 THE COPYRIGHT HOLDERS AND
|
|
* CONTRIBUTORS "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 THE COPYRIGHT OWNER 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.
|
|
*
|
|
* ----------------------------------------------------------------------- */
|
|
|
|
/*
|
|
* mempool.h - pool of constant, deduplicated strings
|
|
*/
|
|
|
|
#ifndef NASM_MEMPOOL_H
|
|
#define NASM_MEMPOOL_H
|
|
|
|
#include "compiler.h"
|
|
|
|
#include <stdarg.h>
|
|
#include <string.h>
|
|
|
|
struct mempool_storage;
|
|
struct mempool {
|
|
struct mempool_storage *sshead, *sstail;
|
|
size_t totalbytes;
|
|
};
|
|
/* A single-member array which can decay to a pointer for simplicity */
|
|
typedef struct mempool mempool[1];
|
|
|
|
char * safe_alloc mempool_cpy(struct mempool *pool, const char *str);
|
|
char * safe_alloc mempool_cat(struct mempool *pool, const char *str1, const char *str2);
|
|
char * safe_alloc mempool_cat3(struct mempool *pool, const char *str1,
|
|
const char *str2, const char *str3);
|
|
char * safe_alloc mempool_vprintf(struct mempool *pool, const char *fmt, va_list va);
|
|
char * safe_alloc mempool_printf(struct mempool *pool, const char *fmt, ...);
|
|
|
|
void * safe_malloc(2) mempool_alloc(struct mempool *pool, size_t bytes);
|
|
void * safe_malloc(2) mempool_align(struct mempool *pool, size_t bytes, size_t align);
|
|
void mempool_free(struct mempool *pool);
|
|
void mempool_reclaim(void);
|
|
|
|
#ifdef HAVE_ALIGNOF
|
|
#define mempool_new(pool,ptr) \
|
|
((ptr) = mempool_align(pool, sizeof *(ptr), alignof(*(ptr))))
|
|
#else
|
|
#define mempool_new(pool,ptr) \
|
|
((ptr) = mempool_alloc(pool, sizeof *(ptr)))
|
|
#endif
|
|
|
|
/*
|
|
* Common memory pools that are freed after every line, pass, or session,
|
|
* respectively.
|
|
*/
|
|
extern mempool mempool_perm;
|
|
extern mempool mempool_pass;
|
|
extern mempool mempool_line;
|
|
|
|
/* Routines to copy strings into mempool_perm */
|
|
char *perm_copy(const char *string);
|
|
char *perm_copy3(const char *s1, const char *s2, const char *s3);
|
|
|
|
#endif /* NASM_STRPOOL_H */
|