diff options
| author | Gedare Bloom <gedare@rtems.org> | 2016-08-12 15:25:10 -0400 |
|---|---|---|
| committer | Gedare Bloom <gedare@rtems.org> | 2017-01-13 11:17:30 -0500 |
| commit | ba77628250ae7158db363fc0d7886ebd43e9cb69 (patch) | |
| tree | 91a8a5b7d20399c69c5c88223a43ec681451996b /cpukit/sapi/include | |
| 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 'cpukit/sapi/include')
| -rw-r--r-- | cpukit/sapi/include/confdefs.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/cpukit/sapi/include/confdefs.h b/cpukit/sapi/include/confdefs.h index 12eec53c0f..e00d079554 100644 --- a/cpukit/sapi/include/confdefs.h +++ b/cpukit/sapi/include/confdefs.h @@ -2068,6 +2068,10 @@ extern rtems_initialization_tasks_table Initialization_tasks[]; #define CONFIGURE_MAXIMUM_POSIX_RWLOCKS \ rtems_resource_unlimited(CONFIGURE_UNLIMITED_ALLOCATION_SIZE) #endif + #if !defined(CONFIGURE_MAXIMUM_POSIX_SHMS) + #define CONFIGURE_MAXIMUM_POSIX_SHMS \ + rtems_resource_unlimited(CONFIGURE_UNLIMITED_ALLOCATION_SIZE) + #endif #endif /* RTEMS_POSIX_API */ #endif /* CONFIGURE_UNLIMITED_OBJECTS */ @@ -2464,6 +2468,7 @@ extern rtems_initialization_tasks_table Initialization_tasks[]; #include <rtems/posix/pthread.h> #include <rtems/posix/rwlock.h> #include <rtems/posix/semaphore.h> + #include <rtems/posix/shm.h> #include <rtems/posix/threadsup.h> #include <rtems/posix/timer.h> @@ -2626,6 +2631,34 @@ extern rtems_initialization_tasks_table Initialization_tasks[]; #define CONFIGURE_MEMORY_FOR_POSIX_RWLOCKS(_rwlocks) \ _Configure_Object_RAM(_rwlocks, sizeof(POSIX_RWLock_Control) ) + /** + * Configure the maximum number of POSIX shared memory objects. + */ + #if !defined(CONFIGURE_MAXIMUM_POSIX_SHMS) + #define CONFIGURE_MAXIMUM_POSIX_SHMS 0 + #else + #ifdef CONFIGURE_INIT + #if !defined(CONFIGURE_HAS_OWN_POSIX_SHM_OBJECT_OPERATIONS) + const POSIX_Shm_Object_operations _POSIX_Shm_Object_operations = { + _POSIX_Shm_Object_create_from_workspace, + _POSIX_Shm_Object_resize_from_workspace, + _POSIX_Shm_Object_delete_from_workspace, + _POSIX_Shm_Object_read_from_workspace + }; + #endif + #endif + #endif + + /** + * This macro is calculated to specify the memory required for + * POSIX API shared memory. + * + * This is an internal parameter. + */ + #define CONFIGURE_MEMORY_FOR_POSIX_SHMS(_shms) \ + _Configure_POSIX_Named_Object_RAM(_shms, sizeof(POSIX_Shm_Control) ) + + #ifdef CONFIGURE_POSIX_INIT_THREAD_TABLE #ifdef CONFIGURE_POSIX_HAS_OWN_INIT_THREAD_TABLE @@ -2851,6 +2884,8 @@ extern rtems_initialization_tasks_table Initialization_tasks[]; CONFIGURE_MEMORY_FOR_POSIX_BARRIERS(CONFIGURE_MAXIMUM_POSIX_BARRIERS) + \ CONFIGURE_MEMORY_FOR_POSIX_RWLOCKS( \ CONFIGURE_MAXIMUM_POSIX_RWLOCKS) + \ + CONFIGURE_MEMORY_FOR_POSIX_SHMS( \ + CONFIGURE_MAXIMUM_POSIX_SHMS) + \ CONFIGURE_MEMORY_FOR_POSIX_TIMERS(CONFIGURE_MAXIMUM_POSIX_TIMERS)) #else /** @@ -3333,6 +3368,7 @@ extern rtems_initialization_tasks_table Initialization_tasks[]; CONFIGURE_MAXIMUM_POSIX_SEMAPHORES, CONFIGURE_MAXIMUM_POSIX_BARRIERS, CONFIGURE_MAXIMUM_POSIX_RWLOCKS, + CONFIGURE_MAXIMUM_POSIX_SHMS, CONFIGURE_POSIX_INIT_THREAD_TABLE_SIZE, CONFIGURE_POSIX_INIT_THREAD_TABLE_NAME }; @@ -3548,6 +3584,7 @@ extern rtems_initialization_tasks_table Initialization_tasks[]; uint32_t POSIX_SEMAPHORES; uint32_t POSIX_BARRIERS; uint32_t POSIX_RWLOCKS; + uint32_t POSIX_SHMS; #endif /* Stack space sizes */ @@ -3601,6 +3638,7 @@ extern rtems_initialization_tasks_table Initialization_tasks[]; CONFIGURE_MEMORY_FOR_POSIX_SEMAPHORES( CONFIGURE_MAXIMUM_POSIX_SEMAPHORES ), CONFIGURE_MEMORY_FOR_POSIX_BARRIERS( CONFIGURE_MAXIMUM_POSIX_BARRIERS ), CONFIGURE_MEMORY_FOR_POSIX_RWLOCKS( CONFIGURE_MAXIMUM_POSIX_RWLOCKS ), + CONFIGURE_MEMORY_FOR_POSIX_SHMS( CONFIGURE_MAXIMUM_POSIX_SHMS ), CONFIGURE_MEMORY_FOR_POSIX_TIMERS( CONFIGURE_MAXIMUM_POSIX_TIMERS ), #endif @@ -3672,6 +3710,7 @@ extern rtems_initialization_tasks_table Initialization_tasks[]; (CONFIGURE_MAXIMUM_POSIX_SEMAPHORES != 0) || \ (CONFIGURE_MAXIMUM_POSIX_BARRIERS != 0) || \ (CONFIGURE_MAXIMUM_POSIX_RWLOCKS != 0) || \ + (CONFIGURE_MAXIMUM_POSIX_SHMS != 0) || \ defined(CONFIGURE_POSIX_INIT_THREAD_TABLE)) #error "CONFIGURATION ERROR: POSIX API support not configured!!" #endif |