diff options
| author | shishir gowda <shishirng@gluster.com> | 2011-07-29 16:30:36 +0530 |
|---|---|---|
| committer | Anand Avati <avati@gluster.com> | 2011-07-31 23:15:15 -0700 |
| commit | 76acac485b9f06f36d145b4c31fa6f4da3c70f52 (patch) | |
| tree | 8d3bcc7f3cbb0e498f77a7d6998a9e7865a234ad /libglusterfs/src/iobuf.h | |
| parent | 9867f3954138e795123b4b308e256e641c55f3ec (diff) | |
IOBUF: Bring in variable iobuf support
Rebasing Raghavendra's patch to master
Change-Id: Ie7a0c9a7b8e73cfe48c4573a5153460d5126208e
BUG: 2472
Reviewed-on: http://review.gluster.com/12
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Amar Tumballi <amar@gluster.com>
Reviewed-by: Anand Avati <avati@gluster.com>
Diffstat (limited to 'libglusterfs/src/iobuf.h')
| -rw-r--r-- | libglusterfs/src/iobuf.h | 42 |
1 files changed, 32 insertions, 10 deletions
diff --git a/libglusterfs/src/iobuf.h b/libglusterfs/src/iobuf.h index fc8ff623a..6a5b460dc 100644 --- a/libglusterfs/src/iobuf.h +++ b/libglusterfs/src/iobuf.h @@ -26,6 +26,8 @@ #include <sys/mman.h> #include <sys/uio.h> +#define GF_VARIABLE_IOBUF_COUNT 32 + /* Lets try to define the new anonymous mapping * flag, in case the system is still using the * now deprecated MAP_ANON flag. @@ -75,6 +77,12 @@ struct iobuf_arena { struct iobuf_arena *prev; }; }; + + size_t page_size; /* size of all iobufs in this arena */ + size_t arena_size; /* this is equal to + (iobuf_pool->arena_size / page_size) + * page_size */ + struct iobuf_pool *iobuf_pool; void *mem_base; @@ -91,17 +99,29 @@ struct iobuf_arena { struct iobuf_pool { pthread_mutex_t mutex; - size_t page_size; /* size of all iobufs in this pool */ - size_t arena_size; /* size of memory region in arena */ + size_t arena_size; /* size of memory region in + arena */ + size_t default_page_size; /* default size of iobuf */ int arena_cnt; - struct iobuf_arena arenas; /* head node arena - (unused by itself) */ - struct iobuf_arena filled; /* arenas without free iobufs */ - struct iobuf_arena purge; /* arenas which can be purged */ -}; - + struct list_head arenas[GF_VARIABLE_IOBUF_COUNT]; + /* array of arenas. Each element of + the array is a list of arenas + holding iobufs of particular + page_size + */ + struct list_head filled[GF_VARIABLE_IOBUF_COUNT]; + /* + array of arenas without free iobufs + */ + + struct list_head purge[GF_VARIABLE_IOBUF_COUNT]; + /* + array of of arenas which can be + purged + */ +}; struct iobuf_pool *iobuf_pool_new (size_t arena_size, size_t page_size); @@ -113,8 +133,8 @@ void iobuf_pool_destroy (struct iobuf_pool *iobuf_pool); void iobuf_to_iovec(struct iobuf *iob, struct iovec *iov); #define iobuf_ptr(iob) ((iob)->ptr) -#define iobpool_pagesize(iobpool) ((iobpool)->page_size) -#define iobuf_pagesize(iob) (iobpool_pagesize((iob)->iobuf_arena->iobuf_pool)) +#define iobpool_default_pagesize(iobpool) ((iobpool)->default_page_size) +#define iobuf_pagesize(iob) (iob->iobuf_arena->page_size) struct iobref { @@ -134,4 +154,6 @@ size_t iobuf_size (struct iobuf *iobuf); size_t iobref_size (struct iobref *iobref); void iobuf_stats_dump (struct iobuf_pool *iobuf_pool); +struct iobuf * +iobuf_get2 (struct iobuf_pool *iobuf_pool, size_t page_size); #endif /* !_IOBUF_H_ */ |