diff options
Diffstat (limited to 'libglusterfs/src/mem-pool.h')
| -rw-r--r-- | libglusterfs/src/mem-pool.h | 316 |
1 files changed, 162 insertions, 154 deletions
diff --git a/libglusterfs/src/mem-pool.h b/libglusterfs/src/mem-pool.h index 9a457bbca5a..b163458c488 100644 --- a/libglusterfs/src/mem-pool.h +++ b/libglusterfs/src/mem-pool.h @@ -34,262 +34,270 @@ #endif #define GF_MEM_TRAILER_SIZE 8 -#define GF_MEM_HEADER_MAGIC 0xCAFEBABE +#define GF_MEM_HEADER_MAGIC 0xCAFEBABE #define GF_MEM_TRAILER_MAGIC 0xBAADF00D #define GF_MEM_INVALID_MAGIC 0xDEADC0DE struct mem_acct_rec { - const char *typestr; - size_t size; - size_t max_size; - uint32_t num_allocs; - uint32_t total_allocs; - uint32_t max_num_allocs; - gf_lock_t lock; + const char *typestr; + size_t size; + size_t max_size; + uint32_t num_allocs; + uint32_t total_allocs; + uint32_t max_num_allocs; + gf_lock_t lock; #ifdef DEBUG - struct list_head obj_list; + struct list_head obj_list; #endif }; struct mem_acct { - uint32_t num_types; - gf_atomic_t refcnt; - struct mem_acct_rec rec[0]; + uint32_t num_types; + gf_atomic_t refcnt; + struct mem_acct_rec rec[0]; }; struct mem_header { - uint32_t type; - size_t size; - struct mem_acct *mem_acct; - uint32_t magic; + uint32_t type; + size_t size; + struct mem_acct *mem_acct; + uint32_t magic; #ifdef DEBUG - struct list_head acct_list; + struct list_head acct_list; #endif - int padding[8]; + int padding[8]; }; -#define GF_MEM_HEADER_SIZE (sizeof (struct mem_header)) +#define GF_MEM_HEADER_SIZE (sizeof(struct mem_header)) #ifdef DEBUG struct mem_invalid { - uint32_t magic; - void *mem_acct; - uint32_t type; - size_t size; - void *baseaddr; + uint32_t magic; + void *mem_acct; + uint32_t type; + size_t size; + void *baseaddr; }; #endif void * -__gf_calloc (size_t cnt, size_t size, uint32_t type, const char *typestr); +__gf_calloc(size_t cnt, size_t size, uint32_t type, const char *typestr); void * -__gf_malloc (size_t size, uint32_t type, const char *typestr); +__gf_malloc(size_t size, uint32_t type, const char *typestr); void * -__gf_realloc (void *ptr, size_t size); +__gf_realloc(void *ptr, size_t size); int -gf_vasprintf (char **string_ptr, const char *format, va_list arg); +gf_vasprintf(char **string_ptr, const char *format, va_list arg); int -gf_asprintf (char **string_ptr, const char *format, ...); +gf_asprintf(char **string_ptr, const char *format, ...); void -__gf_free (void *ptr); +__gf_free(void *ptr); -static inline -void* __gf_default_malloc (size_t size) +static inline void * +__gf_default_malloc(size_t size) { - void *ptr = NULL; + void *ptr = NULL; - ptr = malloc (size); - if (!ptr) - gf_msg_nomem ("", GF_LOG_ALERT, size); + ptr = malloc(size); + if (!ptr) + gf_msg_nomem("", GF_LOG_ALERT, size); - return ptr; + return ptr; } -static inline -void* __gf_default_calloc (int cnt, size_t size) +static inline void * +__gf_default_calloc(int cnt, size_t size) { - void *ptr = NULL; + void *ptr = NULL; - ptr = calloc (cnt, size); - if (!ptr) - gf_msg_nomem ("", GF_LOG_ALERT, (cnt * size)); + ptr = calloc(cnt, size); + if (!ptr) + gf_msg_nomem("", GF_LOG_ALERT, (cnt * size)); - return ptr; + return ptr; } -static inline -void* __gf_default_realloc (void *oldptr, size_t size) +static inline void * +__gf_default_realloc(void *oldptr, size_t size) { - void *ptr = NULL; + void *ptr = NULL; - ptr = realloc (oldptr, size); - if (!ptr) - gf_msg_nomem ("", GF_LOG_ALERT, size); + ptr = realloc(oldptr, size); + if (!ptr) + gf_msg_nomem("", GF_LOG_ALERT, size); - return ptr; + return ptr; } -#define MALLOC(size) __gf_default_malloc(size) -#define CALLOC(cnt,size) __gf_default_calloc(cnt,size) -#define REALLOC(ptr,size) __gf_default_realloc(ptr,size) +#define MALLOC(size) __gf_default_malloc(size) +#define CALLOC(cnt, size) __gf_default_calloc(cnt, size) +#define REALLOC(ptr, size) __gf_default_realloc(ptr, size) -#define FREE(ptr) \ - do { \ - if (ptr != NULL) { \ - free ((void *)ptr); \ - ptr = (void *)0xeeeeeeee; \ - } \ - } while (0) +#define FREE(ptr) \ + do { \ + if (ptr != NULL) { \ + free((void *)ptr); \ + ptr = (void *)0xeeeeeeee; \ + } \ + } while (0) -#define GF_CALLOC(nmemb, size, type) __gf_calloc (nmemb, size, type, #type) +#define GF_CALLOC(nmemb, size, type) __gf_calloc(nmemb, size, type, #type) -#define GF_MALLOC(size, type) __gf_malloc (size, type, #type) +#define GF_MALLOC(size, type) __gf_malloc(size, type, #type) -#define GF_REALLOC(ptr, size) __gf_realloc (ptr, size) +#define GF_REALLOC(ptr, size) __gf_realloc(ptr, size) -#define GF_FREE(free_ptr) __gf_free (free_ptr) +#define GF_FREE(free_ptr) __gf_free(free_ptr) -static inline -char *gf_strndup (const char *src, size_t len) +static inline char * +gf_strndup(const char *src, size_t len) { - char *dup_str = NULL; + char *dup_str = NULL; - if (!src) { - goto out; - } + if (!src) { + goto out; + } - dup_str = GF_MALLOC (len + 1, gf_common_mt_strdup); - if (!dup_str) { - goto out; - } + dup_str = GF_MALLOC(len + 1, gf_common_mt_strdup); + if (!dup_str) { + goto out; + } - memcpy (dup_str, src, len); - dup_str[len] = '\0'; + memcpy(dup_str, src, len); + dup_str[len] = '\0'; out: - return dup_str; + return dup_str; } -static inline -char * gf_strdup (const char *src) +static inline char * +gf_strdup(const char *src) { - if (!src) - return NULL; + if (!src) + return NULL; - return gf_strndup (src, strlen (src)); + return gf_strndup(src, strlen(src)); } static inline void * -gf_memdup (const void *src, size_t size) +gf_memdup(const void *src, size_t size) { - void *dup_mem = NULL; + void *dup_mem = NULL; - dup_mem = GF_MALLOC (size, gf_common_mt_strdup); - if (!dup_mem) - goto out; + dup_mem = GF_MALLOC(size, gf_common_mt_strdup); + if (!dup_mem) + goto out; - memcpy (dup_mem, src, size); + memcpy(dup_mem, src, size); out: - return dup_mem; + return dup_mem; } /* kind of 'header' for the actual mem_pool_shared structure, this might make * it possible to dump some more details in a statedump */ struct mem_pool { - /* object size, without pooled_obj_hdr_t */ - unsigned long sizeof_type; - unsigned long count; /* requested pool size (unused) */ - char *name; - gf_atomic_t active; /* current allocations */ + /* object size, without pooled_obj_hdr_t */ + unsigned long sizeof_type; + unsigned long count; /* requested pool size (unused) */ + char *name; + gf_atomic_t active; /* current allocations */ - struct list_head owner; /* glusterfs_ctx_t->mempool_list */ - glusterfs_ctx_t *ctx; /* take ctx->lock when updating owner */ + struct list_head owner; /* glusterfs_ctx_t->mempool_list */ + glusterfs_ctx_t *ctx; /* take ctx->lock when updating owner */ - struct mem_pool_shared *pool; /* the initial pool that was returned */ + struct mem_pool_shared *pool; /* the initial pool that was returned */ }; typedef struct pooled_obj_hdr { - unsigned long magic; - struct pooled_obj_hdr *next; - struct per_thread_pool_list *pool_list; - unsigned int power_of_two; + unsigned long magic; + struct pooled_obj_hdr *next; + struct per_thread_pool_list *pool_list; + unsigned int power_of_two; - /* track the pool that was used to request this object */ - struct mem_pool *pool; + /* track the pool that was used to request this object */ + struct mem_pool *pool; } pooled_obj_hdr_t; -#define AVAILABLE_SIZE(p2) ((1 << (p2)) - sizeof(pooled_obj_hdr_t)) +#define AVAILABLE_SIZE(p2) ((1 << (p2)) - sizeof(pooled_obj_hdr_t)) typedef struct per_thread_pool { - /* the pool that was used to request this allocation */ - struct mem_pool_shared *parent; - /* Everything else is protected by our own lock. */ - pooled_obj_hdr_t *hot_list; - pooled_obj_hdr_t *cold_list; + /* the pool that was used to request this allocation */ + struct mem_pool_shared *parent; + /* Everything else is protected by our own lock. */ + pooled_obj_hdr_t *hot_list; + pooled_obj_hdr_t *cold_list; } per_thread_pool_t; typedef struct per_thread_pool_list { - /* - * These first two members are protected by the global pool lock. When - * a thread first tries to use any pool, we create one of these. We - * link it into the global list using thr_list so the pool-sweeper - * thread can find it, and use pthread_setspecific so this thread can - * find it. When the per-thread destructor runs, we "poison" the pool - * list to prevent further allocations. This also signals to the - * pool-sweeper thread that the list should be detached and freed after - * the next time it's swept. - */ - struct list_head thr_list; - unsigned int poison; - /* - * There's really more than one pool, but the actual number is hidden - * in the implementation code so we just make it a single-element array - * here. - */ - pthread_spinlock_t lock; - per_thread_pool_t pools[1]; + /* + * These first two members are protected by the global pool lock. When + * a thread first tries to use any pool, we create one of these. We + * link it into the global list using thr_list so the pool-sweeper + * thread can find it, and use pthread_setspecific so this thread can + * find it. When the per-thread destructor runs, we "poison" the pool + * list to prevent further allocations. This also signals to the + * pool-sweeper thread that the list should be detached and freed after + * the next time it's swept. + */ + struct list_head thr_list; + unsigned int poison; + /* + * There's really more than one pool, but the actual number is hidden + * in the implementation code so we just make it a single-element array + * here. + */ + pthread_spinlock_t lock; + per_thread_pool_t pools[1]; } per_thread_pool_list_t; /* actual pool structure, shared between different mem_pools */ struct mem_pool_shared { - unsigned int power_of_two; - /* - * Updates to these are *not* protected by a global lock, so races - * could occur and the numbers might be slightly off. Don't expect - * them to line up exactly. It's the general trends that matter, and - * it's not worth the locked-bus-cycle overhead to make these precise. - */ - gf_atomic_t allocs_hot; - gf_atomic_t allocs_cold; - gf_atomic_t allocs_stdc; - gf_atomic_t frees_to_list; + unsigned int power_of_two; + /* + * Updates to these are *not* protected by a global lock, so races + * could occur and the numbers might be slightly off. Don't expect + * them to line up exactly. It's the general trends that matter, and + * it's not worth the locked-bus-cycle overhead to make these precise. + */ + gf_atomic_t allocs_hot; + gf_atomic_t allocs_cold; + gf_atomic_t allocs_stdc; + gf_atomic_t frees_to_list; }; -void mem_pools_init_early (void); /* basic initialization of memory pools */ -void mem_pools_init_late (void); /* start the pool_sweeper thread */ -void mem_pools_fini (void); /* cleanup memory pools */ +void +mem_pools_init_early(void); /* basic initialization of memory pools */ +void +mem_pools_init_late(void); /* start the pool_sweeper thread */ +void +mem_pools_fini(void); /* cleanup memory pools */ struct mem_pool * -mem_pool_new_fn (glusterfs_ctx_t *ctx, unsigned long sizeof_type, unsigned long - count, char *name); +mem_pool_new_fn(glusterfs_ctx_t *ctx, unsigned long sizeof_type, + unsigned long count, char *name); -#define mem_pool_new(type,count) \ - mem_pool_new_fn (THIS->ctx, sizeof(type), count, #type) +#define mem_pool_new(type, count) \ + mem_pool_new_fn(THIS->ctx, sizeof(type), count, #type) -#define mem_pool_new_ctx(ctx,type,count) \ - mem_pool_new_fn (ctx, sizeof(type), count, #type) +#define mem_pool_new_ctx(ctx, type, count) \ + mem_pool_new_fn(ctx, sizeof(type), count, #type) -void mem_put (void *ptr); -void *mem_get (struct mem_pool *pool); -void *mem_get0 (struct mem_pool *pool); +void +mem_put(void *ptr); +void * +mem_get(struct mem_pool *pool); +void * +mem_get0(struct mem_pool *pool); -void mem_pool_destroy (struct mem_pool *pool); +void +mem_pool_destroy(struct mem_pool *pool); -void gf_mem_acct_enable_set (void *ctx); +void +gf_mem_acct_enable_set(void *ctx); #endif /* _MEM_POOL_H */ |