diff options
Diffstat (limited to 'libglusterfs/src/mem-pool.c')
| -rw-r--r-- | libglusterfs/src/mem-pool.c | 42 |
1 files changed, 31 insertions, 11 deletions
diff --git a/libglusterfs/src/mem-pool.c b/libglusterfs/src/mem-pool.c index 5fdd5e5f2d1..f3dfc2149e4 100644 --- a/libglusterfs/src/mem-pool.c +++ b/libglusterfs/src/mem-pool.c @@ -24,10 +24,12 @@ #include <stdarg.h> #define GF_MEM_POOL_LIST_BOUNDARY (sizeof(struct list_head)) -#define GF_MEM_POOL_PAD_BOUNDARY (GF_MEM_POOL_LIST_BOUNDARY + sizeof(int)) +#define GF_MEM_POOL_PTR (sizeof(struct mem_pool*)) +#define GF_MEM_POOL_PAD_BOUNDARY (GF_MEM_POOL_LIST_BOUNDARY + GF_MEM_POOL_PTR + sizeof(int)) #define mem_pool_chunkhead2ptr(head) ((head) + GF_MEM_POOL_PAD_BOUNDARY) #define mem_pool_ptr2chunkhead(ptr) ((ptr) - GF_MEM_POOL_PAD_BOUNDARY) #define is_mem_chunk_in_use(ptr) (*ptr == 1) +#define mem_pool_from_ptr(ptr) ((ptr) + GF_MEM_POOL_LIST_BOUNDARY) #define GF_MEM_HEADER_SIZE (4 + sizeof (size_t) + sizeof (xlator_t *) + 4 + 8) #define GF_MEM_TRAILER_SIZE 8 @@ -379,6 +381,7 @@ mem_get (struct mem_pool *mem_pool) struct list_head *list = NULL; void *ptr = NULL; int *in_use = NULL; + struct mem_pool **pool_ptr = NULL; if (!mem_pool) { gf_log ("mem-pool", GF_LOG_ERROR, "invalid argument"); @@ -395,7 +398,8 @@ mem_get (struct mem_pool *mem_pool) mem_pool->cold_count--; ptr = list; - in_use = (ptr + GF_MEM_POOL_LIST_BOUNDARY); + in_use = (ptr + GF_MEM_POOL_LIST_BOUNDARY + + GF_MEM_POOL_PTR); *in_use = 1; goto fwd_addr_out; @@ -421,17 +425,20 @@ mem_get (struct mem_pool *mem_pool) * because it is too much work knowing that a better slab * allocator is coming RSN. */ - ptr = MALLOC (mem_pool->real_sizeof_type); + ptr = GF_CALLOC (1, mem_pool->padded_sizeof_type, + gf_common_mt_mem_pool); + gf_log_callingfn ("mem-pool", GF_LOG_DEBUG, "Mem pool is full. " + "Callocing mem"); /* Memory coming from the heap need not be transformed from a * chunkhead to a usable pointer since it is not coming from * the pool. */ - goto unlocked_out; } fwd_addr_out: + pool_ptr = mem_pool_from_ptr (ptr); + *pool_ptr = (struct mem_pool *)mem_pool; ptr = mem_pool_chunkhead2ptr (ptr); -unlocked_out: UNLOCK (&mem_pool->lock); return ptr; @@ -458,25 +465,39 @@ __is_member (struct mem_pool *pool, void *ptr) void -mem_put (struct mem_pool *pool, void *ptr) +mem_put (void *ptr) { struct list_head *list = NULL; int *in_use = NULL; void *head = NULL; + struct mem_pool **tmp = NULL; + struct mem_pool *pool = NULL; - if (!pool || !ptr) { + if (!ptr) { gf_log ("mem-pool", GF_LOG_ERROR, "invalid argument"); return; } + list = head = mem_pool_ptr2chunkhead (ptr); + tmp = mem_pool_from_ptr (head); + if (!tmp) { + gf_log ("mem-pool", GF_LOG_ERROR, "ptr header is corrupted"); + return; + } + + pool = *tmp; + if (!pool) { + gf_log ("mem-pool", GF_LOG_ERROR, "mem-pool ptr is NULL"); + return; + } LOCK (&pool->lock); { switch (__is_member (pool, ptr)) { case 1: - list = head = mem_pool_ptr2chunkhead (ptr); - in_use = (head + GF_MEM_POOL_LIST_BOUNDARY); + in_use = (head + GF_MEM_POOL_LIST_BOUNDARY + + GF_MEM_POOL_PTR); if (!is_mem_chunk_in_use(in_use)) { gf_log_callingfn ("mem-pool", GF_LOG_CRITICAL, "mem_put called on freed ptr %p of mem " @@ -506,7 +527,7 @@ mem_put (struct mem_pool *pool, void *ptr) * not have enough info to distinguish between the two * situations. */ - FREE (ptr); + GF_FREE (list); break; default: /* log error */ @@ -516,7 +537,6 @@ mem_put (struct mem_pool *pool, void *ptr) UNLOCK (&pool->lock); } - void mem_pool_destroy (struct mem_pool *pool) { |