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add new pa_memchunk_will_need() API, similar to pa_memblock_will_need()

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git-svn-id: file:///home/lennart/svn/public/pulseaudio/branches/lennart@1747 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2007-09-02 20:37:55 +00:00
parent f36ca79716
commit 7dbabc47bb
2 changed files with 22 additions and 0 deletions
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19
src/pulsecore/memchunk.c
View file

@ -29,8 +29,11 @@
#include <stdlib.h> #include <stdlib.h>
#include <assert.h> #include <assert.h>
#include <string.h> #include <string.h>
#include <errno.h>
#include <pulse/xmalloc.h> #include <pulse/xmalloc.h>
#include <pulsecore/macro.h>
#include <pulsecore/core-util.h>
#include "memchunk.h" #include "memchunk.h"
@ -72,3 +75,19 @@ pa_memchunk* pa_memchunk_reset(pa_memchunk *c) {
return c; return c;
} }
pa_memchunk *pa_memchunk_will_need(pa_memchunk *c) {
void *p;
pa_assert(c);
pa_assert(c->memblock);
/* A version of pa_memblock_will_need() that works on memchunks
* instead of memblocks */
p = (uint8_t*) pa_memblock_acquire(c->memblock) + c->index;
pa_will_need(p, c->length);
pa_memblock_release(c->memblock);
return c;
}

3
src/pulsecore/memchunk.h
View file

@ -44,4 +44,7 @@ pa_memchunk* pa_memchunk_make_writable(pa_memchunk *c, size_t min);
* but sets all members to zero. */ * but sets all members to zero. */
pa_memchunk* pa_memchunk_reset(pa_memchunk *c); pa_memchunk* pa_memchunk_reset(pa_memchunk *c);
/* Map a memory chunk back into memory if it was swapped out */
pa_memchunk *pa_memchunk_will_need(pa_memchunk *c);
#endif #endif