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r6513: Commit talloc_free_children.

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Volker
This commit is contained in:
Volker Lendecke
2005-04-28 14:54:17 +00:00
committed by Gerald (Jerry) Carter
parent 16b7e503bd
commit 9fa26d2c97
2 changed files with 45 additions and 20 deletions
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57
source/lib/talloc/talloc.c
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@@ -461,6 +461,42 @@ void *talloc_init(const char *fmt, ...)
return ptr;
}
/*
this is a replacement for the Samba3 talloc_destroy_pool functionality. It
should probably not be used in new code. It's in here to keep the talloc
code consistent across Samba 3 and 4.
*/
void talloc_free_children(void *ptr)
{
struct talloc_chunk *tc;
if (ptr == NULL) {
return;
}
tc = talloc_chunk_from_ptr(ptr);
while (tc->child) {
/* we need to work out who will own an abandoned child
if it cannot be freed. In priority order, the first
choice is owner of any remaining reference to this
pointer, the second choice is our parent, and the
final choice is the null context. */
void *child = tc->child+1;
const void *new_parent = null_context;
if (tc->child->refs) {
struct talloc_chunk *p = talloc_parent_chunk(tc->child->refs);
if (p) new_parent = p+1;
}
if (talloc_free(child) == -1) {
if (new_parent == null_context) {
struct talloc_chunk *p = talloc_parent_chunk(ptr);
if (p) new_parent = p+1;
}
talloc_steal(new_parent, child);
}
}
}
/*
free a talloc pointer. This also frees all child pointers of this
@@ -498,26 +534,7 @@ int talloc_free(void *ptr)
tc->destructor = NULL;
}
while (tc->child) {
/* we need to work out who will own an abandoned child
if it cannot be freed. In priority order, the first
choice is owner of any remaining reference to this
pointer, the second choice is our parent, and the
final choice is the null context. */
void *child = tc->child+1;
const void *new_parent = null_context;
if (tc->child->refs) {
struct talloc_chunk *p = talloc_parent_chunk(tc->child->refs);
if (p) new_parent = p+1;
}
if (talloc_free(child) == -1) {
if (new_parent == null_context) {
struct talloc_chunk *p = talloc_parent_chunk(ptr);
if (p) new_parent = p+1;
}
talloc_steal(new_parent, child);
}
}
talloc_free_children(ptr);
if (tc->parent) {
_TLIST_REMOVE(tc->parent->child, tc);