diff options
Diffstat (limited to 'src/libmowgli/mowgli_mempool.c')
| -rw-r--r-- | src/libmowgli/mowgli_mempool.c | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/src/libmowgli/mowgli_mempool.c b/src/libmowgli/mowgli_mempool.c deleted file mode 100644 index c41436c..0000000 --- a/src/libmowgli/mowgli_mempool.c +++ /dev/null @@ -1,199 +0,0 @@ -/* - * libmowgli: A collection of useful routines for programming. - * mowgli_mempool.c: Memory pooling. - * - * Copyright (c) 2007 William Pitcock <nenolod -at- sacredspiral.co.uk> - * - * Permission to use, copy, modify, and/or distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice is present in all copies. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED - * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, - * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES - * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING - * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGE. - */ - -#include "mowgli.h" - -/* visibility of this object is not available to the outside */ -struct mowgli_mempool_t_ { - mowgli_list_t stack; - mowgli_destructor_t destructor; -#ifdef NOTYET - mowgli_mutex_t *mutex; -#endif -}; - -typedef struct { - void *addr; - int refcount; - mowgli_node_t node; -} mowgli_mempool_elem_t; - -mowgli_mempool_t *mowgli_mempool_with_custom_destructor(mowgli_destructor_t destructor) -{ - mowgli_mempool_t *pool; - - pool = mowgli_alloc(sizeof(mowgli_mempool_t)); - pool->destructor = destructor; -#ifdef NOTYET - pool->mutex = mowgli_mutex_create(); -#endif - return pool; -} - -mowgli_mempool_t *mowgli_mempool_create(void) -{ - return mowgli_mempool_with_custom_destructor(mowgli_free); -} - -void *mowgli_mempool_add(mowgli_mempool_t * pool, void * ptr) -{ - mowgli_mempool_elem_t *e = mowgli_alloc(sizeof(mowgli_mempool_elem_t)); - - e->addr = ptr; - e->refcount = 1; - -#ifdef NOTYET - mowgli_mutex_lock(pool->mutex); -#endif - mowgli_node_add(e, &e->node, &pool->stack); -#ifdef NOTYET - mowgli_mutex_unlock(pool->mutex); -#endif - return ptr; -} - -void * -mowgli_mempool_allocate(mowgli_mempool_t * pool, size_t sz) -{ - void * addr; - -#ifdef NOTYET - mowgli_mutex_lock(pool->mutex); -#endif - addr = mowgli_alloc(sz); - mowgli_node_add(addr, mowgli_node_create(), &pool->stack); -#ifdef NOTYET - mowgli_mutex_unlock(pool->mutex); -#endif - return addr; -} - -void -mowgli_mempool_sustain(mowgli_mempool_t * pool, void * addr) -{ - mowgli_node_t *n, *tn; - mowgli_mempool_elem_t *e; - -#ifdef NOTYET - mowgli_mutex_lock(pool->mutex); -#endif - - MOWGLI_LIST_FOREACH_SAFE(n, tn, pool->stack.head) - { - e = (mowgli_mempool_elem_t *) n->data; - - if (e->addr == addr) - ++e->refcount; - } - -#ifdef NOTYET - mowgli_mutex_unlock(pool->mutex); -#endif -} - -void -mowgli_mempool_release(mowgli_mempool_t * pool, void * addr) -{ - mowgli_node_t *n, *tn; - mowgli_mempool_elem_t *e; - -#ifdef NOTYET - mowgli_mutex_lock(pool->mutex); -#endif - - MOWGLI_LIST_FOREACH_SAFE(n, tn, pool->stack.head) - { - e = (mowgli_mempool_elem_t *) n->data; - - if (e->addr == addr && --e->refcount == 0) - { - mowgli_node_delete(n, &pool->stack); - pool->destructor(addr); - mowgli_free(e); - } - } - -#ifdef NOTYET - mowgli_mutex_unlock(pool->mutex); -#endif -} - -static void -mowgli_mempool_cleanup_nolock(mowgli_mempool_t * pool) -{ - mowgli_node_t *n, *tn; - - MOWGLI_LIST_FOREACH_SAFE(n, tn, pool->stack.head) - { - mowgli_mempool_elem_t *e = (mowgli_mempool_elem_t *) n->data; - - /* don't care about refcounting here. we're killing the entire pool. */ - mowgli_log("mowgli_mempool_t<%p> element at %p was not released until cleanup (refcount: %d)", pool, e->addr, e->refcount); - pool->destructor(e->addr); - mowgli_free(e); - - mowgli_node_delete(n, &pool->stack); - } -} - -void -mowgli_mempool_cleanup(mowgli_mempool_t * pool) -{ -#ifdef NOTYET - mowgli_mutex_lock(pool->mutex); -#endif - mowgli_mempool_cleanup_nolock(pool); -#ifdef NOTYET - mowgli_mutex_unlock(pool->mutex); -#endif -} - -void -mowgli_mempool_destroy(mowgli_mempool_t * pool) -{ -#ifdef NOTYET - mowgli_mutex_lock(pool->mutex); -#endif - - mowgli_mempool_cleanup_nolock(pool); - -#ifdef NOTYET - mowgli_mutex_unlock(pool->mutex); - - mowgli_mutex_free(pool->mutex); -#endif - - mowgli_free(pool); -} - -char * -mowgli_mempool_strdup(mowgli_mempool_t * pool, char * src) -{ - char *out; - size_t sz = strlen(src) + 1; - - out = mowgli_mempool_allocate(pool, sz); - mowgli_strlcpy(out, src, sz); - - return out; -} |