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| author | Ulrich Drepper <drepper@redhat.com> | 2003-05-17 20:53:32 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2003-05-17 20:53:32 +0000 |
| commit | fddfebbd1064dec313891ad91dd9ca6e92e622ec (patch) | |
| tree | ed231a996e804653468ac2916a0d4b32628c0093 /nptl/semaphoreP.h | |
| parent | 68a396e83a8e1e50d0dfde8ffb090a8df311453f (diff) | |
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Update.
2003-05-17 Ulrich Drepper <drepper@redhat.com>
* sem_open.c: Fix one endless loop. Implement correct semantics
wrt opening the same semaphore more then once.
* sem_close.c: Adjust for sem_open change.
* semaphoreP.h: Include <semaphore.h>. Define struct inuse_sem.
Declare __sem_mappings, __sem_mappings_lock, __sem_search.
* Makefile (tests): Add tst-sem7.
* tst-sem7.c: New file.
Diffstat (limited to 'nptl/semaphoreP.h')
| -rw-r--r-- | nptl/semaphoreP.h | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/nptl/semaphoreP.h b/nptl/semaphoreP.h index 0d3f6e53a0..d14ea92c74 100644 --- a/nptl/semaphoreP.h +++ b/nptl/semaphoreP.h @@ -1,4 +1,4 @@ -/* Copyright (C) 2002 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -17,8 +17,10 @@ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ +#include <semaphore.h> #include "pthreadP.h" + /* Mount point of the shared memory filesystem. */ struct mountpoint_info { @@ -26,16 +28,35 @@ struct mountpoint_info size_t dirlen; }; +/* Keeping track of currently used mappings. */ +struct inuse_sem +{ + dev_t dev; + ino_t ino; + int refcnt; + sem_t *sem; + char name[0]; +}; + /* Variables used in multiple interfaces. */ extern struct mountpoint_info mountpoint attribute_hidden; extern pthread_once_t __namedsem_once attribute_hidden; +/* The search tree for existing mappings. */ +extern void *__sem_mappings attribute_hidden; + +/* Lock to protect the search tree. */ +extern lll_lock_t __sem_mappings_lock; + /* Initializer for mountpoint. */ extern void __where_is_shmfs (void) attribute_hidden; +/* Comparison function for search in tree with existing mappings. */ +extern int __sem_search (const void *a, const void *b) attribute_hidden; + /* Prototypes of functions with multiple interfaces. */ extern int __new_sem_init (sem_t *sem, int pshared, unsigned int value); |