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/**
* @file
*
* @brief RTEMS Threads Compatibility Routines for Libgcc2
* @ingroup GxxWrappersSupport
*/
/*
* by: Rosimildo da Silva (rdasilva@connecttel.com)
*
* Used ideas from:
* W. Eric Norum
* Canadian Light Source
* University of Saskatchewan
* Saskatoon, Saskatchewan, CANADA
* eric@cls.usask.ca
*
* Eric sent some e-mail in the rtems-list as a start point for this
* module implementation.
*/
/*
* This file is only used if using gcc
*/
#if defined(__GNUC__)
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <rtems/gxx_wrappers.h>
#include <rtems/score/onceimpl.h>
#include <errno.h>
#include <stdlib.h>
#include <pthread.h>
#include <rtems.h>
/* uncomment this if you need to debug this interface */
/*#define DEBUG_GXX_WRAPPERS 1*/
int rtems_gxx_once(__gthread_once_t *once, void (*func) (void))
{
#ifdef DEBUG_GXX_WRAPPERS
printk( "gxx_wrappers: once=%x, func=%x\n", *once, func );
#endif
return _Once( once, func );
}
int rtems_gxx_key_create (__gthread_key_t *key, void (*dtor) (void *))
{
int eno;
pthread_key_t *pkey;
pkey = malloc( sizeof( *pkey ) );
*key = pkey;
if ( pkey == NULL )
{
return ENOMEM;
}
#ifdef DEBUG_GXX_WRAPPERS
printk(
"gxx_wrappers: create key=%x, dtor=%x, pkey=%x\n", key, dtor, pkey
);
#endif
eno = pthread_key_create(pkey, dtor);
if ( eno != 0 ) {
free( pkey );
*key = NULL;
}
return eno;
}
int rtems_gxx_key_delete (__gthread_key_t key)
{
int eno = 0;
pthread_key_t *pkey = key;
#ifdef DEBUG_GXX_WRAPPERS
printk( "gxx_wrappers: delete key=%x\n", pkey );
#endif
if ( pkey == NULL ) {
return EINVAL;
}
eno = pthread_key_delete(*pkey);
if ( eno == 0 ) {
free( pkey );
}
return eno;
}
void *rtems_gxx_getspecific(__gthread_key_t key)
{
pthread_key_t *pkey = key;
void *p = NULL;
if ( pkey != NULL ) {
p = pthread_getspecific( *pkey );
}
#ifdef DEBUG_GXX_WRAPPERS
printk(
"gxx_wrappers: getspecific key=%x, ptr=%x, id=%x\n",
pkey,
p,
rtems_task_self()
);
#endif
return p;
}
int rtems_gxx_setspecific(__gthread_key_t key, const void *ptr)
{
pthread_key_t *pkey = key;
int eno;
if ( pkey == NULL ) {
return EINVAL;
}
eno = pthread_setspecific( *pkey, ptr );
#ifdef DEBUG_GXX_WRAPPERS
printk(
"gxx_wrappers: setspecific key=%x, ptr=%x, id=%x\n",
pkey,
ptr,
rtems_task_self()
);
#endif
if ( eno != 0 ) {
_Terminate( INTERNAL_ERROR_CORE, INTERNAL_ERROR_GXX_KEY_ADD_FAILED );
}
return 0;
}
/*
* MUTEX support
*/
void rtems_gxx_mutex_init (__gthread_mutex_t *mutex)
{
rtems_status_code status;
#ifdef DEBUG_GXX_WRAPPERS
printk( "gxx_wrappers: mutex init =%X\n", *mutex );
#endif
status = rtems_semaphore_create(
rtems_build_name ('G', 'C', 'C', '2'),
1,
RTEMS_PRIORITY|RTEMS_BINARY_SEMAPHORE|
RTEMS_INHERIT_PRIORITY|RTEMS_NO_PRIORITY_CEILING|RTEMS_LOCAL,
0,
(rtems_id *)mutex
);
if ( status != RTEMS_SUCCESSFUL ) {
#ifdef DEBUG_GXX_WRAPPERS
printk(
"gxx_wrappers: mutex init failed %s (%d)\n",
rtems_status_text(status),
status
);
#endif
_Terminate( INTERNAL_ERROR_CORE, INTERNAL_ERROR_GXX_MUTEX_INIT_FAILED );
}
#ifdef DEBUG_GXX_WRAPPERS
printk( "gxx_wrappers: mutex init complete =%X\n", *mutex );
#endif
}
int rtems_gxx_mutex_lock (__gthread_mutex_t *mutex)
{
rtems_status_code status;
#ifdef DEBUG_GXX_WRAPPERS
printk( "gxx_wrappers: lock mutex=%X\n", *mutex );
#endif
status = rtems_semaphore_obtain(
*(rtems_id *)mutex,
RTEMS_WAIT,
RTEMS_NO_TIMEOUT
);
if ( status == RTEMS_SUCCESSFUL )
return 0;
return -1;
}
int rtems_gxx_mutex_destroy (__gthread_mutex_t *mutex)
{
rtems_status_code status;
#ifdef DEBUG_GXX_WRAPPERS
printk( "gxx_wrappers: destroy mutex=%X\n", *mutex );
#endif
status = rtems_semaphore_delete(*(rtems_id *)mutex);
if ( status == RTEMS_SUCCESSFUL )
return 0;
return -1;
}
int rtems_gxx_mutex_trylock (__gthread_mutex_t *mutex)
{
rtems_status_code status;
#ifdef DEBUG_GXX_WRAPPERS
printk( "gxx_wrappers: trylock mutex=%X\n", *mutex );
#endif
status = rtems_semaphore_obtain (*(rtems_id *)mutex, RTEMS_NO_WAIT, 0);
if ( status == RTEMS_SUCCESSFUL )
return 0;
return -1;
}
int rtems_gxx_mutex_unlock (__gthread_mutex_t *mutex)
{
rtems_status_code status;
#ifdef DEBUG_GXX_WRAPPERS
printk( "gxx_wrappers: unlock mutex=%X\n", *mutex );
#endif
status = rtems_semaphore_release( *(rtems_id *)mutex );
if ( status == RTEMS_SUCCESSFUL )
return 0;
return -1;
}
void rtems_gxx_recursive_mutex_init(__gthread_recursive_mutex_t *mutex)
{
rtems_gxx_mutex_init(mutex);
}
int rtems_gxx_recursive_mutex_lock(__gthread_recursive_mutex_t *mutex)
{
return rtems_gxx_mutex_lock(mutex);
}
int rtems_gxx_recursive_mutex_trylock(__gthread_recursive_mutex_t *mutex)
{
return rtems_gxx_mutex_trylock(mutex);
}
int rtems_gxx_recursive_mutex_unlock(__gthread_recursive_mutex_t *mutex)
{
return rtems_gxx_mutex_unlock(mutex);
}
#endif /* __GNUC__ */
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