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Merge branch 'jc/commit-slab'

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Memory use reduction when commit-slab facility is used to annotate
sparsely (which is not recommended in the first place).

* jc/commit-slab:
  commit-slab: introduce slabname##_peek() function
This commit is contained in:
Junio C Hamano
2015-08-03 11:01:21 -07:00
parent 2dded96052 862e730ec1
commit 720e20eb68
2 changed files with 49 additions and 13 deletions
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28
commit.c
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@ -245,7 +245,12 @@ void set_commit_buffer(struct commit *commit, void *buffer, unsigned long size)
const void *get_cached_commit_buffer(const struct commit *commit, unsigned long *sizep)
{
struct commit_buffer *v = buffer_slab_at(&buffer_slab, commit);
struct commit_buffer *v = buffer_slab_peek(&buffer_slab, commit);
if (!v) {
if (sizep)
*sizep = 0;
return NULL;
}
if (sizep)
*sizep = v->size;
return v->buffer;
@ -272,24 +277,31 @@ const void *get_commit_buffer(const struct commit *commit, unsigned long *sizep)
void unuse_commit_buffer(const struct commit *commit, const void *buffer)
{
struct commit_buffer *v = buffer_slab_at(&buffer_slab, commit);
if (v->buffer != buffer)
struct commit_buffer *v = buffer_slab_peek(&buffer_slab, commit);
if (!(v && v->buffer == buffer))
free((void *)buffer);
}
void free_commit_buffer(struct commit *commit)
{
struct commit_buffer *v = buffer_slab_at(&buffer_slab, commit);
free(v->buffer);
v->buffer = NULL;
v->size = 0;
struct commit_buffer *v = buffer_slab_peek(&buffer_slab, commit);
if (v) {
free(v->buffer);
v->buffer = NULL;
v->size = 0;
}
}
const void *detach_commit_buffer(struct commit *commit, unsigned long *sizep)
{
struct commit_buffer *v = buffer_slab_at(&buffer_slab, commit);
struct commit_buffer *v = buffer_slab_peek(&buffer_slab, commit);
void *ret;
if (!v) {
if (sizep)
*sizep = 0;
return NULL;
}
ret = v->buffer;
if (sizep)
*sizep = v->size;