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fix pa_memchunk_make_writable(), make memchunk functions return the memchunk they modify

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git-svn-id: file:///home/lennart/svn/public/pulseaudio/branches/lennart@1728 fefdeb5f-60dc-0310-8127-8f9354f1896f
This commit is contained in:
Lennart Poettering 2007-08-30 22:41:33 +00:00
parent bfe69cebf3
commit c2e4328c53
2 changed files with 11 additions and 6 deletions
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13
src/pulsecore/memchunk.c
View file

@ -34,7 +34,7 @@
#include "memchunk.h"
void pa_memchunk_make_writable(pa_memchunk *c, size_t min) {
pa_memchunk* pa_memchunk_make_writable(pa_memchunk *c, size_t min) {
pa_memblock *n;
size_t l;
void *tdata, *sdata;
@ -42,9 +42,10 @@ void pa_memchunk_make_writable(pa_memchunk *c, size_t min) {
assert(c);
assert(c->memblock);
if (pa_memblock_is_read_only(c->memblock) &&
if (pa_memblock_ref_is_one(c->memblock) &&
!pa_memblock_is_read_only(c->memblock) &&
pa_memblock_get_length(c->memblock) >= c->index+min)
return;
return c;
l = c->length;
if (l < min)
@ -59,11 +60,15 @@ void pa_memchunk_make_writable(pa_memchunk *c, size_t min) {
pa_memblock_unref(c->memblock);
c->memblock = n;
c->index = 0;
return c;
}
void pa_memchunk_reset(pa_memchunk *c) {
pa_memchunk* pa_memchunk_reset(pa_memchunk *c) {
assert(c);
c->memblock = NULL;
c->length = c->index = 0;
return c;
}

4
src/pulsecore/memchunk.h
View file

@ -38,10 +38,10 @@ typedef struct pa_memchunk {
/* Make a memchunk writable, i.e. make sure that the caller may have
* exclusive access to the memblock and it is not read_only. If needed
* the memblock in the structure is replaced by a copy. */
void pa_memchunk_make_writable(pa_memchunk *c, size_t min);
pa_memchunk* pa_memchunk_make_writable(pa_memchunk *c, size_t min);
/* Invalidate a memchunk. This does not free the cotaining memblock,
* but sets all members to zero. */
void pa_memchunk_reset(pa_memchunk *c);
pa_memchunk* pa_memchunk_reset(pa_memchunk *c);
#endif