1#define JEMALLOC_EXTENT_MMAP_C_
2#include "jemalloc/internal/jemalloc_preamble.h"
3#include "jemalloc/internal/jemalloc_internal_includes.h"
4
5#include "jemalloc/internal/assert.h"
6#include "jemalloc/internal/extent_mmap.h"
7
8/******************************************************************************/
9/* Data. */
10
11bool opt_retain =
12#ifdef JEMALLOC_RETAIN
13 true
14#else
15 false
16#endif
17 ;
18
19/******************************************************************************/
20
21void *
22extent_alloc_mmap(void *new_addr, size_t size, size_t alignment, bool *zero,
23 bool *commit) {
24 assert(alignment == ALIGNMENT_CEILING(alignment, PAGE));
25 void *ret = pages_map(new_addr, size, alignment, commit);
26 if (ret == NULL) {
27 return NULL;
28 }
29 assert(ret != NULL);
30 if (*commit) {
31 *zero = true;
32 }
33 return ret;
34}
35
36bool
37extent_dalloc_mmap(void *addr, size_t size) {
38 if (!opt_retain) {
39 pages_unmap(addr, size);
40 }
41 return opt_retain;
42}
43