-// -----------------------------------------------------------------------
-// Copyright (C) 2006 - 2007 FRESCOR consortium partners:
+//----------------------------------------------------------------------
+// Copyright (C) 2006 - 2007 by the FRESCOR consortium:
//
// Universidad de Cantabria, SPAIN
// University of York, UK
// Visual Tools S.A. SPAIN
// Rapita Systems Ltd UK
// Evidence ITALY
-//
-// See http://www.frescor.org for a link to partners' websites
//
-// FRESCOR project (FP6/2005/IST/5-034026) is funded
+// See http://www.frescor.org
+//
+// The FRESCOR project (FP6/2005/IST/5-034026) is funded
// in part by the European Union Sixth Framework Programme
// The European Union is not liable of any use that may be
// made of this code.
//
-// This file is part of the FRSH implementation
//
-// FRSH is free software; you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation; either version 2, or (at your option)
-// any later version.
+// based on previous work (FSF) done in the FIRST project
+//
+// Copyright (C) 2005 Mälardalen University, SWEDEN
+// Scuola Superiore S.Anna, ITALY
+// Universidad de Cantabria, SPAIN
+// University of York, UK
//
-// FRSH is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-// General Public License for more details.
+// This file is part of FOSA (Frsh Operating System Abstraction)
//
-// You should have received a copy of the GNU General Public License
-// distributed with FRSH; see file COPYING. If not, write to the
-// Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-// 02111-1307, USA.
+// FOSA is free software; you can redistribute it and/or modify it
+// under terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 2, or (at your option) any
+// later version. FOSA is distributed in the hope that it will be
+// useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details. You should have received a
+// copy of the GNU General Public License along with FOSA; see file
+// COPYING. If not, write to the Free Software Foundation, 675 Mass Ave,
+// Cambridge, MA 02139, USA.
//
+// As a special exception, including FOSA header files in a file,
+// instantiating FOSA generics or templates, or linking other files
+// with FOSA objects to produce an executable application, does not
+// by itself cause the resulting executable application to be covered
+// by the GNU General Public License. This exception does not
+// however invalidate any other reasons why the executable file might be
+// covered by the GNU Public License.
// -----------------------------------------------------------------------
//fosa_mutexes_and_condvars.c
//==============================================
// **//// /** ** ////////** /**//////**
// ** /** ** /** /** /**
// ** /** ** ******** /** /**
-// // /******/ //////// // //
+// // /******/ //////// // //
//
// FOSA(Frescor Operating System Adaptation layer)
//================================================
*
* Initialize a frsh mutex
*
- * The mutex pointed to by mutex is initialized as a mutex using
+ * The mutex pointed to by mutex is initialized as a mutex using
* the priority ceiling protocol. A priority ceiling of prioceiling
* is assigned to this mutex.
- *
+ *
* Returns 0 if successful; otherwise it returns an error code:
* EINVAL: the value of prioceiling is invalid
* EAGAIN: the system lacked the necessary resources to create the mutex
* notify it to the system console and then terminate the FRSH
* implementation and dependant applications
**/
-int fosa_mutex_init(frsh_mutex_t *mutex, int prioceiling)
+int fosa_mutex_init(fosa_mutex_t *mutex, int prioceiling)
{
pthread_mutexattr_t attr;
int ret_value;
- // create the attributes object and set the mutex to use the
+ // create the attributes object and set the mutex to use the
// priority ceiling protocol and the desired priority ceiling
ret_value=pthread_mutexattr_init(&attr);
if (ret_value!=0) return ret_value;
CHK(pthread_mutexattr_setprotocol(&attr,PTHREAD_PRIO_PROTECT));
ret_value=pthread_mutexattr_setprioceiling(&attr,prioceiling);
- if (ret_value==0) {
+ if (ret_value==0) {
// create the mutex
ret_value=pthread_mutex_init(mutex,&attr);
}
* fosa_mutex_destroy()
*
* Destroy a frsh mutex
- *
+ *
* The mutex pointed to by mutex is destroyed
- *
+ *
* Returns 0 if successful; otherwise it returns an error code:
* EINVAL: the value of mutex is invalid
- * EBUSY: The mutex is in use (is locked)
+ * EBUSY: The mutex is in use (is locked)
*
* Alternatively, in case of error the implementation is allowed to
* notify it to the system console and then terminate the FRSH
* implementation and dependant applications
**/
-int fosa_mutex_destroy(frsh_mutex_t *mutex)
+int fosa_mutex_destroy(fosa_mutex_t *mutex)
{
return pthread_mutex_destroy(mutex);
}
* fosa_mutex_set_prioceiling()
*
* Dynamically set the priority ceiling of a mutex
- *
+ *
* This function locks the mutex (blocking the calling thread if
* necessary) and after it is locked it changes its priority ceiling
* to the value specified by new_ceiling, and then it unlocks the
* mutex. The previous value of the ceiling is returned in
* old_ceiling.
- *
+ *
* Returns 0 if successful; otherwise it returns an error code:
* EINVAL: the value of mutex or prioceiling is invalid
*
* implementation and dependant applications
**/
int fosa_mutex_set_prioceiling
- (frsh_mutex_t *mutex, int new_ceiling, int *old_ceiling)
+ (fosa_mutex_t *mutex, int new_ceiling, int *old_ceiling)
{
return pthread_mutex_setprioceiling(mutex,new_ceiling,old_ceiling);
}
/**
* fosa_mutex_get_prioceiling()
*
- * Dynamically get the priority ceiling of a mutex
+ * Dynamically get the priority ceiling of a mutex
*
* This function copies into the variable pointed to by ceiling the
* current priority ceiling of the mutex referenced by mutex
- *
+ *
* Returns 0 if successful; otherwise it returns an error code:
* EINVAL: the value of mutex is invalid
*
* notify it to the system console and then terminate the FRSH
* implementation and dependant applications
**/
-int fosa_mutex_get_prioceiling(const frsh_mutex_t *mutex, int *ceiling)
+int fosa_mutex_get_prioceiling(const fosa_mutex_t *mutex, int *ceiling)
{
return pthread_mutex_getprioceiling(mutex,ceiling);
}
* fosa_mutex_lock()
*
* Lock a mutex
- *
+ *
* This function locks the mutex specified by mutex. If it is already
* locked, the calling thread blocks until the mutex becomes
* available. The operation returns with the mutex in the locked
* state, with the calling thread as its owner.
- *
+ *
* Returns 0 if successful; otherwise it returns an error code:
* EINVAL: the value of mutex is invalid, or the priority of the
* calling thread is higher than the priority ceiling of the mutex
* notify it to the system console and then terminate the FRSH
* implementation and dependant applications
**/
-int fosa_mutex_lock(frsh_mutex_t *mutex)
+int fosa_mutex_lock(fosa_mutex_t *mutex)
{
return pthread_mutex_lock(mutex);
}
* implementation is allowed to notify it to the system console and
* then terminate the FRSH implementation and dependant applications
**/
-int fosa_mutex_trylock(frsh_mutex_t *mutex)
+int fosa_mutex_trylock(fosa_mutex_t *mutex)
{
return pthread_mutex_trylock(mutex);
}
* fosa_mutex_unlock()
*
* Unlock a mutex
- *
+ *
* This function must be called by the owner of the mutex referenced
* by mutex, to unlock it. If there are threads blocked on the mutex
* the mutex becomes available and the highest priority thread is
* awakened to acquire the mutex.
- *
+ *
* Returns 0 if successful; otherwise it returns an error code:
* EINVAL: the value of mutex is invalid
* EPERM: the calling thread is not the owner of the mutex
*
* Alternatively, except for EBUSY, in case of error the
* implementation is allowed to notify it to the system console and
- * then terminate the FRSH implementation and dependant applications
+ * then terminate the FRSH implementation and dependant applications
**/
-int fosa_mutex_unlock(frsh_mutex_t *mutex)
+int fosa_mutex_unlock(fosa_mutex_t *mutex)
{
return pthread_mutex_unlock(mutex);
}
* fosa_cond_init()
*
* Initiatize a condition variable
- *
+ *
* The condition variable referenced by cond is initialized with
* the attributes required by the FOSA implementation.
*
* EAGAIN: the system lacked the necessary resources to create the
* condition variable
* ENOMEM: Insufficient memory exists to initialize the condition variable
- * EBUSY: The system has detected an attempt to reinitialize the
+ * EBUSY: The system has detected an attempt to reinitialize the
* condition variable
*
* Alternatively, in case of error the implementation is allowed to
int fosa_cond_init(fosa_cond_t *cond)
{
// initialize condition variable with default attributes
+ // TODO: cond var attr timer to monotonic when supported by marte
return pthread_cond_init(cond,NULL);
}
* Destroy a condition variable
*
* The condition variable pointed to by cond is destroyed
- *
+ *
* Returns 0 if successful; otherwise it returns an error code:
* EINVAL: the value of cond is invalid
- * EBUSY: The condition variable is in use (a thread is waiting on it)
+ * EBUSY: The condition variable is in use (a thread is waiting on it)
*
* Alternatively, in case of error the implementation is allowed to
* notify it to the system console and then terminate the FRSH
* notify it to the system console and then terminate the FRSH
* implementation and dependant applications
**/
-int fosa_cond_wait(fosa_cond_t *cond, frsh_mutex_t *mutex)
+int fosa_cond_wait(fosa_cond_t *cond, fosa_mutex_t *mutex)
{
return pthread_cond_wait(cond,mutex);
}
* fosa_cond_timedwait()
*
* Wait at a condition variable, with a timeout
- *
+ *
* This function is equal to fosa_cond_wait(), except that the maximum
* wait time is limited to the absolute time referenced by abstime, as
- * measured by the FOSA_CLOCK_REALTIME clock.
+ * measured by the FOSA_CLOCK_ABSOLUTE clock.
*
* Returns 0 if successful; otherwise it returns an error code:
* EINVAL: the value of cond or mutex or abstime is invalid, or different
* implementation is allowed to notify it to the system console and
* then terminate the FRSH implementation and dependant applications
**/
-int fosa_cond_timedwait(fosa_cond_t *cond, frsh_mutex_t *mutex,
+int fosa_cond_timedwait(fosa_cond_t *cond, fosa_mutex_t *mutex,
const struct timespec *abstime)
{
return pthread_cond_timedwait(cond,mutex,abstime);
projects / frescor / fosa.git / blobdiff