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libblock: Add RTEMS_BDBUF_USE_PTHREAD

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Use the PTHREAD mutexes and condition variables if available.  This
helps on SMP configurations to avoid the home grown condition variables
via disabled preemption.
This commit is contained in:
Ralf Kirchner authored and Sebastian Huber committed 2014-06-02 16:26:25 +02:00
1 parent d8ac087a8c
commit 1fc2e960ce
3 files changed
+230 -72
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cpukit/libblock/include/rtems/bdbuf.h
+9
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@@ -174,6 +174,15 @@ extern "C" {
*/
/**@{**/
#if defined(RTEMS_POSIX_API)
/*
* Use the PTHREAD mutexes and condition variables if available. This helps
* on SMP configurations to avoid the home grown condition variables via
* disabled preemption.
*/
#define RTEMS_BDBUF_USE_PTHREAD
#endif
/**
* @brief State of a buffer of the cache.
*
cpukit/libblock/src/bdbuf.c
+181 -62
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File diff suppressed because it is too large. Load diff
cpukit/sapi/include/confdefs.h
+40 -10
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@@ -1520,16 +1520,42 @@ const rtems_libio_helper rtems_fs_init_helper =
(CONFIGURE_BDBUF_TASK_STACK_SIZE <= CONFIGURE_MINIMUM_TASK_STACK_SIZE ? \
0 : CONFIGURE_BDBUF_TASK_STACK_SIZE - CONFIGURE_MINIMUM_TASK_STACK_SIZE))
/*
* Semaphores:
* o disk lock
* o bdbuf lock
* o bdbuf sync lock
* o bdbuf access condition
* o bdbuf transfer condition
* o bdbuf buffer condition
*/
#define CONFIGURE_LIBBLOCK_SEMAPHORES 6
#ifdef RTEMS_BDBUF_USE_PTHREAD
/*
* Semaphores:
* o disk lock
*/
#define CONFIGURE_LIBBLOCK_SEMAPHORES 1
/*
* POSIX Mutexes:
* o bdbuf lock
* o bdbuf sync lock
*/
#define CONFIGURE_LIBBLOCK_POSIX_MUTEXES 2
/*
* POSIX Condition Variables:
* o bdbuf access condition
* o bdbuf transfer condition
* o bdbuf buffer condition
*/
#define CONFIGURE_LIBBLOCK_POSIX_CONDITION_VARIABLES 3
#else
/*
* Semaphores:
* o disk lock
* o bdbuf lock
* o bdbuf sync lock
* o bdbuf access condition
* o bdbuf transfer condition
* o bdbuf buffer condition
*/
#define CONFIGURE_LIBBLOCK_SEMAPHORES 6
#define CONFIGURE_LIBBLOCK_POSIX_MUTEXES 0
#define CONFIGURE_LIBBLOCK_POSIX_CONDITION_VARIABLES 0
#endif
#if defined(CONFIGURE_HAS_OWN_BDBUF_TABLE) || \
defined(CONFIGURE_BDBUF_BUFFER_SIZE) || \
@@ -1540,6 +1566,8 @@ const rtems_libio_helper rtems_fs_init_helper =
#define CONFIGURE_LIBBLOCK_TASKS 0
#define CONFIGURE_LIBBLOCK_TASK_EXTRA_STACKS 0
#define CONFIGURE_LIBBLOCK_SEMAPHORES 0
#define CONFIGURE_LIBBLOCK_POSIX_MUTEXES 0
#define CONFIGURE_LIBBLOCK_POSIX_CONDITION_VARIABLES 0
#endif /* CONFIGURE_APPLICATION_NEEDS_LIBBLOCK */
#ifndef CONFIGURE_EXTRA_MPCI_RECEIVE_SERVER_STACK
@@ -2209,6 +2237,7 @@ const rtems_libio_helper rtems_fs_init_helper =
*/
#define CONFIGURE_POSIX_MUTEXES \
(CONFIGURE_MAXIMUM_POSIX_MUTEXES + \
CONFIGURE_LIBBLOCK_POSIX_MUTEXES + \
CONFIGURE_GNAT_MUTEXES + \
CONFIGURE_MAXIMUM_ADA_TASKS + \
CONFIGURE_MAXIMUM_FAKE_ADA_TASKS + \
@@ -2220,6 +2249,7 @@ const rtems_libio_helper rtems_fs_init_helper =
*/
#define CONFIGURE_POSIX_CONDITION_VARIABLES \
(CONFIGURE_MAXIMUM_POSIX_CONDITION_VARIABLES + \
CONFIGURE_LIBBLOCK_POSIX_CONDITION_VARIABLES + \
CONFIGURE_MAXIMUM_ADA_TASKS + \
CONFIGURE_MAXIMUM_FAKE_ADA_TASKS + \
CONFIGURE_GO_INIT_CONDITION_VARIABLES + \