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authorJens Axboe <jens.axboe@oracle.com>2008-06-12 11:53:57 +0200
committerJens Axboe <jens.axboe@oracle.com>2008-06-12 11:53:57 +0200
commit0ec7b3c9a0926e6377bd145206bb9f6a70be610d (patch)
treed48e8e405f5bc8c9566c26b87fb487e32fe48e8d /filehash.c
parent3f1959101ed6a935ff3e2aec0fe7f5828f23fbcb (diff)
downloadfio-0ec7b3c9a0926e6377bd145206bb9f6a70be610d.tar.gz
fio-0ec7b3c9a0926e6377bd145206bb9f6a70be610d.tar.bz2
Convert file hash lock to spinlocks
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'filehash.c')
-rw-r--r--filehash.c27
1 files changed, 15 insertions, 12 deletions
diff --git a/filehash.c b/filehash.c
index a00ac788..97c0b3c7 100644
--- a/filehash.c
+++ b/filehash.c
@@ -5,13 +5,15 @@
#include "flist.h"
#include "crc/crc16.h"
+#include "spinlock.h"
+
#define HASH_BUCKETS 512
#define HASH_MASK (HASH_BUCKETS - 1)
unsigned int file_hash_size = HASH_BUCKETS * sizeof(struct flist_head);
static struct flist_head *file_hash;
-static struct fio_mutex *hash_lock;
+static struct fio_spinlock *hash_lock;
static unsigned short hash(const char *name)
{
@@ -20,7 +22,7 @@ static unsigned short hash(const char *name)
void remove_file_hash(struct fio_file *f)
{
- fio_mutex_down(hash_lock);
+ fio_spin_lock(hash_lock);
if (f->flags & FIO_FILE_HASHED) {
assert(!flist_empty(&f->hash_list));
@@ -28,7 +30,7 @@ void remove_file_hash(struct fio_file *f)
f->flags &= ~FIO_FILE_HASHED;
}
- fio_mutex_up(hash_lock);
+ fio_spin_unlock(hash_lock);
}
static struct fio_file *__lookup_file_hash(const char *name)
@@ -52,9 +54,9 @@ struct fio_file *lookup_file_hash(const char *name)
{
struct fio_file *f;
- fio_mutex_down(hash_lock);
+ fio_spin_lock(hash_lock);
f = __lookup_file_hash(name);
- fio_mutex_up(hash_lock);
+ fio_spin_unlock(hash_lock);
return f;
}
@@ -67,7 +69,7 @@ struct fio_file *add_file_hash(struct fio_file *f)
INIT_FLIST_HEAD(&f->hash_list);
- fio_mutex_down(hash_lock);
+ fio_spin_lock(hash_lock);
alias = __lookup_file_hash(f->file_name);
if (!alias) {
@@ -75,7 +77,7 @@ struct fio_file *add_file_hash(struct fio_file *f)
flist_add_tail(&f->hash_list, &file_hash[hash(f->file_name)]);
}
- fio_mutex_up(hash_lock);
+ fio_spin_unlock(hash_lock);
return alias;
}
@@ -83,16 +85,17 @@ void file_hash_exit(void)
{
unsigned int i, has_entries = 0;
- fio_mutex_down(hash_lock);
+ fio_spin_lock(hash_lock);
for (i = 0; i < HASH_BUCKETS; i++)
has_entries += !flist_empty(&file_hash[i]);
- fio_mutex_up(hash_lock);
+
+ file_hash = NULL;
+ fio_spin_unlock(hash_lock);
if (has_entries)
log_err("fio: file hash not empty on exit\n");
- file_hash = NULL;
- fio_mutex_remove(hash_lock);
+ fio_spinlock_remove(hash_lock);
hash_lock = NULL;
}
@@ -104,5 +107,5 @@ void file_hash_init(void *ptr)
for (i = 0; i < HASH_BUCKETS; i++)
INIT_FLIST_HEAD(&file_hash[i]);
- hash_lock = fio_mutex_init(1);
+ hash_lock = fio_spinlock_init();
}