diff options
| author | kib <kib@FreeBSD.org> | 2016-02-28 17:52:33 +0000 |
|---|---|---|
| committer | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2018-08-24 15:00:02 +0200 |
| commit | c3df6d5155f0ffc3337991fbc1796952edf2cd82 (patch) | |
| tree | 4b961219897f5ffeb477a81ca12b02171cdc2935 | |
| parent | 7cfc736e8911c2ad1fbd9d212264c44bcda45fbd (diff) | |
| download | cygnal-c3df6d5155f0ffc3337991fbc1796952edf2cd82.tar.gz cygnal-c3df6d5155f0ffc3337991fbc1796952edf2cd82.tar.bz2 cygnal-c3df6d5155f0ffc3337991fbc1796952edf2cd82.zip | |
Implement process-shared locks support
for libthr.so.3, without breaking the ABI. Special value is stored in
the lock pointer to indicate shared lock, and offline page in the shared
memory is allocated to store the actual lock.
Reviewed by: vangyzen (previous version)
Discussed with: deischen, emaste, jhb, rwatson,
Martin Simmons <martin@lispworks.com>
Tested by: pho
Sponsored by: The FreeBSD Foundation
| -rw-r--r-- | newlib/libc/sys/rtems/include/sys/mman.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/newlib/libc/sys/rtems/include/sys/mman.h b/newlib/libc/sys/rtems/include/sys/mman.h index 19d992e83..1fce96074 100644 --- a/newlib/libc/sys/rtems/include/sys/mman.h +++ b/newlib/libc/sys/rtems/include/sys/mman.h @@ -233,6 +233,13 @@ struct shmfd { int shm_map(struct file *fp, size_t size, off_t offset, void **memp); int shm_unmap(struct file *fp, void *mem, size_t size); +int shm_access(struct shmfd *shmfd, struct ucred *ucred, int flags); +struct shmfd *shm_alloc(struct ucred *ucred, mode_t mode); +struct shmfd *shm_hold(struct shmfd *shmfd); +void shm_drop(struct shmfd *shmfd); +int shm_dotruncate(struct shmfd *shmfd, off_t length); + +extern struct fileops shm_ops; #else /* !_KERNEL */ __BEGIN_DECLS |