diff options
author | Gedare Bloom <gedare@rtems.org> | 2016-08-12 15:25:10 -0400 |
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committer | Gedare Bloom <gedare@rtems.org> | 2017-01-13 11:17:30 -0500 |
commit | ba77628250ae7158db363fc0d7886ebd43e9cb69 (patch) | |
tree | 91a8a5b7d20399c69c5c88223a43ec681451996b /cpukit/posix/src/shm.c | |
parent | posix: fix typo in mmap arguments (diff) | |
download | rtems-ba77628250ae7158db363fc0d7886ebd43e9cb69.tar.bz2 |
posix: shared memory support
Add POSIX shared memory manager (Shm). Includes a hook-based
approach for the backing memory storage that defaults to the
Workspace, and a test is provided using the heap. A test is
also provided for the basic use of mmap'ing a shared memory
object. This test currently fails at the mmap stage due to
no support for mmap.
Diffstat (limited to '')
-rw-r--r-- | cpukit/posix/src/shm.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/cpukit/posix/src/shm.c b/cpukit/posix/src/shm.c new file mode 100644 index 0000000000..7dca6bbc1d --- /dev/null +++ b/cpukit/posix/src/shm.c @@ -0,0 +1,48 @@ +/** + * @file + */ + +/* + * Copyright (c) 2016 Gedare Bloom. + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.rtems.org/license/LICENSE. + */ + +#if HAVE_CONFIG_H +#include "config.h" +#endif + +#include <sys/stat.h> +#include <fcntl.h> + +#include <rtems/system.h> +#include <rtems/config.h> +#include <rtems/libio.h> +#include <rtems/sysinit.h> +#include <rtems/posix/shmimpl.h> + +Objects_Information _POSIX_Shm_Information; + +static void _POSIX_Shm_Manager_initialization( void ) +{ + _Objects_Initialize_information( + &_POSIX_Shm_Information, /* object information table */ + OBJECTS_POSIX_API, /* object API */ + OBJECTS_POSIX_SHMS, /* object class */ + Configuration_POSIX_API.maximum_shms, + /* maximum objects of this class */ + sizeof( POSIX_Shm_Control ), + /* size of this object's control block */ + true, /* true if names for this object are strings */ + _POSIX_PATH_MAX, /* maximum length of each object's name */ + NULL /* Proxy extraction support callout */ + ); +} + +RTEMS_SYSINIT_ITEM( + _POSIX_Shm_Manager_initialization, + RTEMS_SYSINIT_POSIX_SHM, + RTEMS_SYSINIT_ORDER_MIDDLE +); |