diff options
Diffstat (limited to 'polyp/memchunk.h')
| -rw-r--r-- | polyp/memchunk.h | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/polyp/memchunk.h b/polyp/memchunk.h index e73b6f6e..a004c2e8 100644 --- a/polyp/memchunk.h +++ b/polyp/memchunk.h @@ -24,18 +24,22 @@ #include "memblock.h" +/* A memchunk is a part of a memblock. In contrast to the memblock, a + * memchunk is not allocated dynamically or reference counted, instead + * it is usually stored on the stack and copied around */ + struct pa_memchunk { struct pa_memblock *memblock; size_t index, length; }; -void pa_memchunk_make_writable(struct pa_memchunk *c, struct pa_memblock_stat *s); - -struct pa_mcalign; +/* 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(struct pa_memchunk *c, struct pa_memblock_stat *s, size_t min); -struct pa_mcalign *pa_mcalign_new(size_t base, struct pa_memblock_stat *s); -void pa_mcalign_free(struct pa_mcalign *m); -void pa_mcalign_push(struct pa_mcalign *m, const struct pa_memchunk *c); -int pa_mcalign_pop(struct pa_mcalign *m, struct pa_memchunk *c); +/* Invalidate a memchunk. This does not free the cotaining memblock, + * but sets all members to zero. */ +void pa_memchunk_reset(struct pa_memchunk *c); #endif |