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+2007-11-06 Corinna Vinschen <corinna@vinschen.de>
+
+ * shm.cc: Include sync.h
+ (struct shm_shmid_list): Add ref_count member.
+ (struct shm_attached_list): Remove hdl and size members. Add a parent
+ member pointing to referenced shm_shmid_list entry.
+ (shm_guard): New muto.
+ (SLIST_LOCK): Define.
+ (SLIST_UNLOCK): Define.
+ (fixup_shms_after_fork): Use hdl and size members of parent
+ shm_shmid_list entry.
+ (shmat): Access sequential bookkeeping lists in a thread safe way.
+ Accommodate change in list element layout. Align comments.
+ (shmctl): Ditto.
+ (shmdt): Ditto.
+ (shmget): Ditto.
+
2007-11-05 Corinna Vinschen <corinna@vinschen.de>
* shm.cc (shmctl): On IPC_RMID don't unmap views and don't close handle