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23389b19
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Third Party Musl
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23389b19
编写于
4月 19, 2018
作者:
R
Rich Felker
浏览文件
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浏览文件
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电子邮件补丁
差异文件
move malloc implementation types and macros to an internal header
上级
618b18c7
变更
2
隐藏空白更改
内联
并排
Showing
2 changed file
with
40 addition
and
37 deletion
+40
-37
src/internal/malloc_impl.h
src/internal/malloc_impl.h
+39
-0
src/malloc/malloc.c
src/malloc/malloc.c
+1
-37
未找到文件。
src/internal/malloc_impl.h
0 → 100644
浏览文件 @
23389b19
#ifndef MALLOC_IMPL_H
#define MALLOC_IMPL_H
void
*
__mmap
(
void
*
,
size_t
,
int
,
int
,
int
,
off_t
);
int
__munmap
(
void
*
,
size_t
);
void
*
__mremap
(
void
*
,
size_t
,
size_t
,
int
,
...);
int
__madvise
(
void
*
,
size_t
,
int
);
struct
chunk
{
size_t
psize
,
csize
;
struct
chunk
*
next
,
*
prev
;
};
struct
bin
{
volatile
int
lock
[
2
];
struct
chunk
*
head
;
struct
chunk
*
tail
;
};
#define SIZE_ALIGN (4*sizeof(size_t))
#define SIZE_MASK (-SIZE_ALIGN)
#define OVERHEAD (2*sizeof(size_t))
#define MMAP_THRESHOLD (0x1c00*SIZE_ALIGN)
#define DONTCARE 16
#define RECLAIM 163840
#define CHUNK_SIZE(c) ((c)->csize & -2)
#define CHUNK_PSIZE(c) ((c)->psize & -2)
#define PREV_CHUNK(c) ((struct chunk *)((char *)(c) - CHUNK_PSIZE(c)))
#define NEXT_CHUNK(c) ((struct chunk *)((char *)(c) + CHUNK_SIZE(c)))
#define MEM_TO_CHUNK(p) (struct chunk *)((char *)(p) - OVERHEAD)
#define CHUNK_TO_MEM(c) (void *)((char *)(c) + OVERHEAD)
#define BIN_TO_CHUNK(i) (MEM_TO_CHUNK(&mal.bins[i].head))
#define C_INUSE ((size_t)1)
#define IS_MMAPPED(c) !((c)->csize & (C_INUSE))
#endif
src/malloc/malloc.c
浏览文件 @
23389b19
...
...
@@ -8,54 +8,18 @@
#include "libc.h"
#include "atomic.h"
#include "pthread_impl.h"
#include "malloc_impl.h"
#if defined(__GNUC__) && defined(__PIC__)
#define inline inline __attribute__((always_inline))
#endif
void
*
__mmap
(
void
*
,
size_t
,
int
,
int
,
int
,
off_t
);
int
__munmap
(
void
*
,
size_t
);
void
*
__mremap
(
void
*
,
size_t
,
size_t
,
int
,
...);
int
__madvise
(
void
*
,
size_t
,
int
);
struct
chunk
{
size_t
psize
,
csize
;
struct
chunk
*
next
,
*
prev
;
};
struct
bin
{
volatile
int
lock
[
2
];
struct
chunk
*
head
;
struct
chunk
*
tail
;
};
static
struct
{
volatile
uint64_t
binmap
;
struct
bin
bins
[
64
];
volatile
int
free_lock
[
2
];
}
mal
;
#define SIZE_ALIGN (4*sizeof(size_t))
#define SIZE_MASK (-SIZE_ALIGN)
#define OVERHEAD (2*sizeof(size_t))
#define MMAP_THRESHOLD (0x1c00*SIZE_ALIGN)
#define DONTCARE 16
#define RECLAIM 163840
#define CHUNK_SIZE(c) ((c)->csize & -2)
#define CHUNK_PSIZE(c) ((c)->psize & -2)
#define PREV_CHUNK(c) ((struct chunk *)((char *)(c) - CHUNK_PSIZE(c)))
#define NEXT_CHUNK(c) ((struct chunk *)((char *)(c) + CHUNK_SIZE(c)))
#define MEM_TO_CHUNK(p) (struct chunk *)((char *)(p) - OVERHEAD)
#define CHUNK_TO_MEM(c) (void *)((char *)(c) + OVERHEAD)
#define BIN_TO_CHUNK(i) (MEM_TO_CHUNK(&mal.bins[i].head))
#define C_INUSE ((size_t)1)
#define IS_MMAPPED(c) !((c)->csize & (C_INUSE))
/* Synchronization tools */
static
inline
void
lock
(
volatile
int
*
lk
)
...
...
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