#include <unistd.h>
#include <sys/types.h>
#include <limits.h>
+#include <fcntl.h>
#include "mutex.h"
#include "arch/arch.h"
+#include "os/os.h"
#define SMALLOC_REDZONE /* define to detect memory corruption */
#define SMALLOC_BPI (sizeof(unsigned int) * 8)
#define SMALLOC_BPL (SMALLOC_BPB * SMALLOC_BPI)
-#define INITIAL_SIZE 1024*1024 /* new pool size */
+#define INITIAL_SIZE 8192*1024 /* new pool size */
#define MAX_POOLS 128 /* maximum number of pools to setup */
#define SMALLOC_PRE_RED 0xdeadbeefU
#define SMALLOC_POST_RED 0x5aa55aa5U
unsigned int smalloc_pool_size = INITIAL_SIZE;
+const int int_mask = sizeof(int) - 1;
struct pool {
struct fio_mutex *lock; /* protects this pool */
bitmap_blocks = alloc_size / SMALLOC_BPL;
alloc_size += bitmap_blocks * sizeof(unsigned int);
pool->mmap_size = alloc_size;
-
+
pool->nr_blocks = bitmap_blocks;
pool->free_blocks = bitmap_blocks * SMALLOC_BPB;
+#ifdef FIO_HAVE_FALLOCATE
+ posix_fallocate(fd, 0, alloc_size);
+#endif
+
if (ftruncate(fd, alloc_size) < 0)
goto out_unlink;
}
#ifdef SMALLOC_REDZONE
+static void *postred_ptr(struct block_hdr *hdr)
+{
+ unsigned long ptr;
+
+ ptr = (unsigned long) hdr + hdr->size - sizeof(unsigned int);
+ ptr = (ptr + int_mask) & ~int_mask;
+
+ return (void *) ptr;
+}
+
static void fill_redzone(struct block_hdr *hdr)
{
- unsigned int *postred = (void *) hdr + hdr->size - sizeof(unsigned int);
+ unsigned int *postred = postred_ptr(hdr);
hdr->prered = SMALLOC_PRE_RED;
*postred = SMALLOC_POST_RED;
static void sfree_check_redzone(struct block_hdr *hdr)
{
- unsigned int *postred = (void *) hdr + hdr->size - sizeof(unsigned int);
+ unsigned int *postred = postred_ptr(hdr);
if (hdr->prered != SMALLOC_PRE_RED) {
fprintf(stderr, "smalloc pre redzone destroyed!\n");
unsigned int alloc_size = size + sizeof(struct block_hdr);
void *ptr;
+ /*
+ * Round to int alignment, so that the postred pointer will
+ * be naturally aligned as well.
+ */
#ifdef SMALLOC_REDZONE
alloc_size += sizeof(unsigned int);
+ alloc_size = (alloc_size + int_mask) & ~int_mask;
#endif
ptr = __smalloc_pool(pool, alloc_size);