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null: add FIO_FAKEIO flag
[fio.git]
/
smalloc.c
diff --git
a/smalloc.c
b/smalloc.c
index 409998aa8ad5a66ebbc8ac7d2fb620553ac75880..d0f732baee6cc6515e26f554432fae87958c0bf6 100644
(file)
--- a/
smalloc.c
+++ b/
smalloc.c
@@
-8,11
+8,15
@@
#include <assert.h>
#include <string.h>
#include <unistd.h>
#include <assert.h>
#include <string.h>
#include <unistd.h>
+#include <inttypes.h>
#include <sys/types.h>
#include <limits.h>
#include <sys/types.h>
#include <limits.h>
+#include <fcntl.h>
#include "mutex.h"
#include "arch/arch.h"
#include "mutex.h"
#include "arch/arch.h"
+#include "os/os.h"
+#include "smalloc.h"
#define SMALLOC_REDZONE /* define to detect memory corruption */
#define SMALLOC_REDZONE /* define to detect memory corruption */
@@
-27,21
+31,20
@@
#define SMALLOC_POST_RED 0x5aa55aa5U
unsigned int smalloc_pool_size = INITIAL_SIZE;
#define SMALLOC_POST_RED 0x5aa55aa5U
unsigned int smalloc_pool_size = INITIAL_SIZE;
-const int int_mask = sizeof(int) - 1;
+
static
const int int_mask = sizeof(int) - 1;
struct pool {
struct fio_mutex *lock; /* protects this pool */
void *map; /* map of blocks */
unsigned int *bitmap; /* blocks free/busy map */
struct pool {
struct fio_mutex *lock; /* protects this pool */
void *map; /* map of blocks */
unsigned int *bitmap; /* blocks free/busy map */
- unsigned int free_blocks; /* free blocks */
- unsigned int nr_blocks; /* total blocks */
- unsigned int next_non_full;
- int fd; /* memory backing fd */
- unsigned int mmap_size;
+ size_t free_blocks; /* free blocks */
+ size_t nr_blocks; /* total blocks */
+ size_t next_non_full;
+ size_t mmap_size;
};
struct block_hdr {
};
struct block_hdr {
-
unsigned in
t size;
+
size_
t size;
#ifdef SMALLOC_REDZONE
unsigned int prered;
#endif
#ifdef SMALLOC_REDZONE
unsigned int prered;
#endif
@@
-50,7
+53,7
@@
struct block_hdr {
static struct pool mp[MAX_POOLS];
static unsigned int nr_pools;
static unsigned int last_pool;
static struct pool mp[MAX_POOLS];
static unsigned int nr_pools;
static unsigned int last_pool;
-static struct fio_
mutex
*lock;
+static struct fio_
rwlock
*lock;
static inline void pool_lock(struct pool *pool)
{
static inline void pool_lock(struct pool *pool)
{
@@
-64,22
+67,22
@@
static inline void pool_unlock(struct pool *pool)
static inline void global_read_lock(void)
{
static inline void global_read_lock(void)
{
- fio_
mutex_down
_read(lock);
+ fio_
rwlock
_read(lock);
}
static inline void global_read_unlock(void)
{
}
static inline void global_read_unlock(void)
{
- fio_
mutex_up_read
(lock);
+ fio_
rwlock_unlock
(lock);
}
static inline void global_write_lock(void)
{
}
static inline void global_write_lock(void)
{
- fio_
mutex_down
_write(lock);
+ fio_
rwlock
_write(lock);
}
static inline void global_write_unlock(void)
{
}
static inline void global_write_unlock(void)
{
- fio_
mutex_up_write
(lock);
+ fio_
rwlock_unlock
(lock);
}
static inline int ptr_valid(struct pool *pool, void *ptr)
}
static inline int ptr_valid(struct pool *pool, void *ptr)
@@
-89,13
+92,13
@@
static inline int ptr_valid(struct pool *pool, void *ptr)
return (ptr >= pool->map) && (ptr < pool->map + pool_size);
}
return (ptr >= pool->map) && (ptr < pool->map + pool_size);
}
-static inline
unsigned int size_to_blocks(unsigned in
t size)
+static inline
size_t size_to_blocks(size_
t size)
{
return (size + SMALLOC_BPB - 1) / SMALLOC_BPB;
}
static int blocks_iter(struct pool *pool, unsigned int pool_idx,
{
return (size + SMALLOC_BPB - 1) / SMALLOC_BPB;
}
static int blocks_iter(struct pool *pool, unsigned int pool_idx,
- unsigned int idx,
unsigned in
t nr_blocks,
+ unsigned int idx,
size_
t nr_blocks,
int (*func)(unsigned int *map, unsigned int mask))
{
int (*func)(unsigned int *map, unsigned int mask))
{
@@
-150,19
+153,19
@@
static int mask_set(unsigned int *map, unsigned int mask)
}
static int blocks_free(struct pool *pool, unsigned int pool_idx,
}
static int blocks_free(struct pool *pool, unsigned int pool_idx,
- unsigned int idx,
unsigned in
t nr_blocks)
+ unsigned int idx,
size_
t nr_blocks)
{
return blocks_iter(pool, pool_idx, idx, nr_blocks, mask_cmp);
}
static void set_blocks(struct pool *pool, unsigned int pool_idx,
{
return blocks_iter(pool, pool_idx, idx, nr_blocks, mask_cmp);
}
static void set_blocks(struct pool *pool, unsigned int pool_idx,
- unsigned int idx,
unsigned in
t nr_blocks)
+ unsigned int idx,
size_
t nr_blocks)
{
blocks_iter(pool, pool_idx, idx, nr_blocks, mask_set);
}
static void clear_blocks(struct pool *pool, unsigned int pool_idx,
{
blocks_iter(pool, pool_idx, idx, nr_blocks, mask_set);
}
static void clear_blocks(struct pool *pool, unsigned int pool_idx,
- unsigned int idx,
unsigned in
t nr_blocks)
+ unsigned int idx,
size_
t nr_blocks)
{
blocks_iter(pool, pool_idx, idx, nr_blocks, mask_clear);
}
{
blocks_iter(pool, pool_idx, idx, nr_blocks, mask_clear);
}
@@
-170,20
+173,16
@@
static void clear_blocks(struct pool *pool, unsigned int pool_idx,
static int find_next_zero(int word, int start)
{
assert(word != -1U);
static int find_next_zero(int word, int start)
{
assert(word != -1U);
- word >>=
(start + 1)
;
- return ffz(word) + start
+ 1
;
+ word >>=
start
;
+ return ffz(word) + start;
}
static int add_pool(struct pool *pool, unsigned int alloc_size)
{
}
static int add_pool(struct pool *pool, unsigned int alloc_size)
{
- int
fd,
bitmap_blocks;
-
char file[] = "/tmp/.fio_smalloc.XXXXXX"
;
+ int bitmap_blocks;
+
int mmap_flags
;
void *ptr;
void *ptr;
- fd = mkstemp(file);
- if (fd < 0)
- goto out_close;
-
#ifdef SMALLOC_REDZONE
alloc_size += sizeof(unsigned int);
#endif
#ifdef SMALLOC_REDZONE
alloc_size += sizeof(unsigned int);
#endif
@@
-200,38
+199,31
@@
static int add_pool(struct pool *pool, unsigned int alloc_size)
pool->nr_blocks = bitmap_blocks;
pool->free_blocks = bitmap_blocks * SMALLOC_BPB;
pool->nr_blocks = bitmap_blocks;
pool->free_blocks = bitmap_blocks * SMALLOC_BPB;
- if (ftruncate(fd, alloc_size) < 0)
- goto out_unlink;
+ mmap_flags = OS_MAP_ANON;
+#ifdef CONFIG_ESX
+ mmap_flags |= MAP_PRIVATE;
+#else
+ mmap_flags |= MAP_SHARED;
+#endif
+ ptr = mmap(NULL, alloc_size, PROT_READ|PROT_WRITE, mmap_flags, -1, 0);
- ptr = mmap(NULL, alloc_size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0);
if (ptr == MAP_FAILED)
if (ptr == MAP_FAILED)
- goto out_
unlink
;
+ goto out_
fail
;
memset(ptr, 0, alloc_size);
pool->map = ptr;
pool->bitmap = (void *) ptr + (pool->nr_blocks * SMALLOC_BPL);
memset(ptr, 0, alloc_size);
pool->map = ptr;
pool->bitmap = (void *) ptr + (pool->nr_blocks * SMALLOC_BPL);
- pool->lock = fio_mutex_init(
1
);
+ pool->lock = fio_mutex_init(
FIO_MUTEX_UNLOCKED
);
if (!pool->lock)
if (!pool->lock)
- goto out_unlink;
-
- /*
- * Unlink pool file now. It wont get deleted until the fd is closed,
- * which happens both for cleanup or unexpected quit. This way we
- * don't leave temp files around in case of a crash.
- */
- unlink(file);
- pool->fd = fd;
+ goto out_fail;
nr_pools++;
return 0;
nr_pools++;
return 0;
-out_
unlink
:
+out_
fail
:
fprintf(stderr, "smalloc: failed adding pool\n");
if (pool->map)
munmap(pool->map, pool->mmap_size);
fprintf(stderr, "smalloc: failed adding pool\n");
if (pool->map)
munmap(pool->map, pool->mmap_size);
- unlink(file);
-out_close:
- close(fd);
return 1;
}
return 1;
}
@@
-239,7
+231,7
@@
void sinit(void)
{
int ret;
{
int ret;
- lock = fio_
mutex_rw
_init();
+ lock = fio_
rwlock
_init();
ret = add_pool(&mp[0], INITIAL_SIZE);
assert(!ret);
}
ret = add_pool(&mp[0], INITIAL_SIZE);
assert(!ret);
}
@@
-250,7
+242,6
@@
static void cleanup_pool(struct pool *pool)
* This will also remove the temporary file we used as a backing
* store, it was already unlinked
*/
* This will also remove the temporary file we used as a backing
* store, it was already unlinked
*/
- close(pool->fd);
munmap(pool->map, pool->mmap_size);
if (pool->lock)
munmap(pool->map, pool->mmap_size);
if (pool->lock)
@@
-265,15
+256,15
@@
void scleanup(void)
cleanup_pool(&mp[i]);
if (lock)
cleanup_pool(&mp[i]);
if (lock)
- fio_
mutex
_remove(lock);
+ fio_
rwlock
_remove(lock);
}
#ifdef SMALLOC_REDZONE
static void *postred_ptr(struct block_hdr *hdr)
{
}
#ifdef SMALLOC_REDZONE
static void *postred_ptr(struct block_hdr *hdr)
{
- u
nsigned long
ptr;
+ u
intptr_t
ptr;
- ptr = (u
nsigned long
) hdr + hdr->size - sizeof(unsigned int);
+ ptr = (u
intptr_t
) hdr + hdr->size - sizeof(unsigned int);
ptr = (ptr + int_mask) & ~int_mask;
return (void *) ptr;
ptr = (ptr + int_mask) & ~int_mask;
return (void *) ptr;
@@
-365,9
+356,9
@@
void sfree(void *ptr)
sfree_pool(pool, ptr);
}
sfree_pool(pool, ptr);
}
-static void *__smalloc_pool(struct pool *pool,
unsigned in
t size)
+static void *__smalloc_pool(struct pool *pool,
size_
t size)
{
{
-
unsigned in
t nr_blocks;
+
size_
t nr_blocks;
unsigned int i;
unsigned int offset;
unsigned int last_idx;
unsigned int i;
unsigned int offset;
unsigned int last_idx;
@@
-420,9
+411,9
@@
fail:
return ret;
}
return ret;
}
-static void *smalloc_pool(struct pool *pool,
unsigned in
t size)
+static void *smalloc_pool(struct pool *pool,
size_
t size)
{
{
-
unsigned in
t alloc_size = size + sizeof(struct block_hdr);
+
size_
t alloc_size = size + sizeof(struct block_hdr);
void *ptr;
/*
void *ptr;
/*
@@
-448,10
+439,13
@@
static void *smalloc_pool(struct pool *pool, unsigned int size)
return ptr;
}
return ptr;
}
-void *smalloc(
unsigned in
t size)
+void *smalloc(
size_
t size)
{
unsigned int i;
{
unsigned int i;
+ if (size != (unsigned int) size)
+ return NULL;
+
global_write_lock();
i = last_pool;
global_write_lock();
i = last_pool;