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Diffstat (limited to 'source/lib/talloc.c')
-rw-r--r-- | source/lib/talloc.c | 96 |
1 files changed, 0 insertions, 96 deletions
diff --git a/source/lib/talloc.c b/source/lib/talloc.c deleted file mode 100644 index 9ba793092d3..00000000000 --- a/source/lib/talloc.c +++ /dev/null @@ -1,96 +0,0 @@ -/* - Unix SMB/Netbios implementation. - Version 3.0 - Samba temporary memory allocation functions - Copyright (C) Andrew Tridgell 2000 - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -*/ - -/* this is a very simple temporary memory allocator. To use it do the following: - - 1) when you first want to allocate a pool of meomry use - talloc_init() and save the resulting context pointer somewhere - - 2) to allocate memory use talloc() - - 3) when _all_ of the memory allocated using this context is no longer needed - use talloc_destroy() - - talloc does not zero the memory. It guarantees memory of a - TALLOC_ALIGN alignment -*/ - -#include "includes.h" - -#define TALLOC_ALIGN 32 -#define TALLOC_CHUNK_SIZE (0x2000) - -/* initialissa talloc context. */ -TALLOC_CTX *talloc_init(void) -{ - TALLOC_CTX *t; - - t = (TALLOC_CTX *)malloc(sizeof(*t)); - if (!t) return NULL; - - t->list = NULL; - - return t; -} - -/* allocate a bit of memory from the specified pool */ -void *talloc(TALLOC_CTX *t, size_t size) -{ - void *p; - - size = (size + TALLOC_ALIGN) & (~TALLOC_ALIGN-1); - - if (!t->list || (t->list->total_size - t->list->alloc_size) < size) { - struct talloc_chunk *c; - size_t asize = (size + TALLOC_CHUNK_SIZE) & ~(TALLOC_CHUNK_SIZE-1); - - c = (struct talloc_chunk *)malloc(sizeof(*c)); - if (!c) return NULL; - c->next = t->list; - c->ptr = (void *)malloc(asize); - if (!c->ptr) { - free(c); - return NULL; - } - c->alloc_size = 0; - c->total_size = asize; - t->list = c; - } - - p = ((char *)t->list->ptr) + t->list->alloc_size; - t->list->alloc_size += size; - return p; -} - -/* destroy a whole pool */ -void talloc_destroy(TALLOC_CTX *t) -{ - struct talloc_chunk *c; - - while (t->list) { - c = t->list->next; - free(t->list->ptr); - free(t->list); - t->list = c; - } - - free(t); -} |