#include "portable.h"
#include "xbt/xbt_os_thread.h"
#include "xbt/mmalloc.h"
+#include <semaphore.h>
#ifdef HAVE_LIMITS_H
# include <limits.h>
if such a file exists. */
struct mdesc {
- xbt_os_mutex_t mutex;
+
+ /* Semaphore locking the access to the heap */
+ sem_t sem;
+
+ /* Number of processes that attached the heap */
+ unsigned int refcount;
+
+ /* Chained lists of mdescs */
+ struct mdesc *next_mdesc;
+
/* The "magic number" for an mmalloc file. */
char magic[MMALLOC_MAGIC_SIZE];
? __mmalloc_default_mdp \
: (struct mdesc *) (md))
-/* Thread-safety (if the mutex is already created)*/
+/* Thread-safety (if the sem is already created)*/
#define LOCK(md) \
- do { \
+ do {\
struct mdesc *lock_local_mdp = MD_TO_MDP(md); \
- if (lock_local_mdp->mutex) \
- xbt_os_mutex_acquire(lock_local_mdp->mutex); \
+ sem_wait(&lock_local_mdp->sem); \
} while (0)
#define UNLOCK(md) \
do { \
struct mdesc *unlock_local_mdp = MD_TO_MDP(md); \
- if (unlock_local_mdp->mutex) \
- xbt_os_mutex_release(unlock_local_mdp->mutex); \
+ sem_post(&unlock_local_mdp->sem); \
} while (0)
#endif /* __MMPRIVATE_H */