/* pthread.c
*
* $Id$
*/
#include <errno.h>
#include <pthread.h>
#include <limits.h>
#include <rtems/score/stack.h>
#include <rtems/score/thread.h>
#include <rtems/posix/pthread.h>
/*PAGE
*
* The default pthreads attributes structure.
*/
const pthread_attr_t _POSIX_Threads_Default_attributes = {
TRUE, /* is_initialized */
0, /* stackaddr */
STACK_MINIMUM_SIZE, /* stacksize */
PTHREAD_SCOPE_PROCESS, /* contentionscope */
PTHREAD_INHERIT_SCHED, /* inheritsched */
SCHED_FIFO, /* schedpolicy */
{ /* schedparam */
128, /* sched_priority */
0, /* ss_low_priority */
{ 0L, 0 }, /* ss_replenish_period */
{ 0L, 0 } /* ss_initial_budget */
},
PTHREAD_CREATE_DETACHED, /* detachstate */
1 /* cputime_clock_allowed */
};
/*PAGE
*
* _POSIX_Threads_Manager_initialization
*
* This routine initializes all threads manager related data structures.
*
* Input parameters:
* maximum_pthreads - maximum configured pthreads
*
* Output parameters: NONE
*/
void _POSIX_Threads_Manager_initialization(
unsigned32 maximum_pthreads
)
{
_Objects_Initialize_information(
&_POSIX_Threads_Information,
OBJECTS_POSIX_THREADS,
TRUE,
maximum_pthreads,
sizeof( POSIX_Threads_Control ),
TRUE,
_POSIX_PATH_MAX,
TRUE
);
}
#ifdef NOT_IMPLEMENTED_YET
/*PAGE
*
* 3.1.3 Register Fork Handlers, P1003.1c/Draft 10, P1003.1c/Draft 10, p. 27
*/
int pthread_atfork(
void (*prepare)(void),
void (*parent)(void),
void (*child)(void)
)
{
return POSIX_NOT_IMPLEMENTED();
}
#endif
/*PAGE
*
* 13.5.1 Thread Creation Scheduling Attributes, P1003.1c/Draft 10, p. 120
*/
int pthread_attr_setscope(
pthread_attr_t *attr,
int contentionscope
)
{
if ( !attr || !attr->is_initialized )
return EINVAL;
attr->contentionscope = contentionscope;
return 0;
}
/*PAGE
*
* 13.5.1 Thread Creation Scheduling Attributes, P1003.1c/Draft 10, p. 120
*/
int pthread_attr_getscope(
const pthread_attr_t *attr,
int *contentionscope
)
{
if ( !attr || !attr->is_initialized )
return EINVAL;
*contentionscope = attr->contentionscope;
return 0;
}
/*PAGE
*
* 13.5.1 Thread Creation Scheduling Attributes, P1003.1c/Draft 10, p. 120
*/
int pthread_attr_setinheritsched(
pthread_attr_t *attr,
int inheritsched
)
{
if ( !attr || !attr->is_initialized )
return EINVAL;
attr->inheritsched = inheritsched;
return 0;
}
/*PAGE
*
* 13.5.1 Thread Creation Scheduling Attributes, P1003.1c/Draft 10, p. 120
*/
int pthread_attr_getinheritsched(
const pthread_attr_t *attr,
int *inheritsched
)
{
if ( !attr || !attr->is_initialized )
return EINVAL;
*inheritsched = attr->inheritsched;
return 0;
}
/*PAGE
*
* 13.5.1 Thread Creation Scheduling Attributes, P1003.1c/Draft 10, p. 120
*/
int pthread_attr_setschedpolicy(
pthread_attr_t *attr,
int policy
)
{
if ( !attr || !attr->is_initialized )
return EINVAL;
attr->schedpolicy = policy;
return 0;
}
/*PAGE
*
* 13.5.1 Thread Creation Scheduling Attributes, P1003.1c/Draft 10, p. 120
*/
int pthread_attr_getschedpolicy(
const pthread_attr_t *attr,
int *policy
)
{
if ( !attr || !attr->is_initialized )
return EINVAL;
*policy = attr->schedpolicy;
return 0;
}
/*PAGE
*
* 13.5.1 Thread Creation Scheduling Attributes, P1003.1c/Draft 10, p. 120
*/
int pthread_attr_setschedparam(
pthread_attr_t *attr,
const struct sched_param param
)
{
if ( !attr || !attr->is_initialized )
return EINVAL;
attr->schedparam = param;
return 0;
}
/*PAGE
*
* 13.5.1 Thread Creation Scheduling Attributes, P1003.1c/Draft 10, p. 120
*/
int pthread_attr_getschedparam(
const pthread_attr_t *attr,
struct sched_param *param
)
{
if ( !attr || !attr->is_initialized )
return EINVAL;
*param = attr->schedparam;
return 0;
}
/*PAGE
*
* 13.5.2 Dynamic Thread Scheduling Parameters Access,
* P1003.1c/Draft 10, p. 124
*/
int pthread_getschedparam(
pthread_t thread,
int *policy,
struct sched_param *param
)
{
pthread_attr_t *attr; /* XXX: really need to get this from the thread */
if ( !policy || !param )
return EINVAL;
*policy = attr->schedpolicy;
*param = attr->schedparam;
return 0;
}
/*PAGE
*
* 13.5.2 Dynamic Thread Scheduling Parameters Access,
* P1003.1c/Draft 10, p. 124
*/
int pthread_setschedparam(
pthread_t thread,
int policy,
struct sched_param *param
)
{
/* XXX need to reschedule after doing this to the thread */
pthread_attr_t *attr; /* XXX: really need to get this from the thread */
if ( !param )
return EINVAL;
attr->schedpolicy = policy;
attr->schedparam = *param;
return 0;
}
/*PAGE
*
* 16.1.1 Thread Creation Attributes, P1003.1c/Draft 10, p, 140
*/
int pthread_attr_init(
pthread_attr_t *attr
)
{
if ( !attr )
return EINVAL;
*attr = _POSIX_Threads_Default_attributes;
return 0;
}
/*PAGE
*
* 16.1.1 Thread Creation Attributes, P1003.1c/Draft 10, p, 140
*/
int pthread_attr_destroy(
pthread_attr_t *attr
)
{
if ( !attr || !attr->is_initialized )
return EINVAL;
attr->is_initialized = FALSE;
return 0;
}
/*PAGE
*
* 16.1.1 Thread Creation Attributes, P1003.1c/Draft 10, p, 140
*/
int pthread_attr_getstacksize(
const pthread_attr_t *attr,
size_t *stacksize
)
{
if ( !attr || !attr->is_initialized )
return EINVAL;
*stacksize = attr->stacksize;
return 0;
}
/*PAGE
*
* 16.1.1 Thread Creation Attributes, P1003.1c/Draft 10, p, 140
*/
int pthread_attr_setstacksize(
pthread_attr_t *attr,
size_t stacksize
)
{
if ( !attr || !attr->is_initialized )
return EINVAL;
attr->stacksize = stacksize;
return 0;
}
/*PAGE
*
* 16.1.1 Thread Creation Attributes, P1003.1c/Draft 10, p, 140
*/
int pthread_attr_getstackaddr(
const pthread_attr_t *attr,
void **stackaddr
)
{
if ( !attr || !attr->is_initialized )
return EINVAL;
*stackaddr = attr->stackaddr;
return 0;
}
/*PAGE
*
* 16.1.1 Thread Creation Attributes, P1003.1c/Draft 10, p, 140
*/
int pthread_attr_setstackaddr(
pthread_attr_t *attr,
void *stackaddr
)
{
if ( !attr || !attr->is_initialized )
return EINVAL;
attr->stackaddr = stackaddr;
return 0;
}
/*PAGE
*
* 16.1.1 Thread Creation Attributes, P1003.1c/Draft 10, p, 140
*/
int pthread_attr_getdetachstate(
const pthread_attr_t *attr,
int *detachstate
)
{
if ( !attr || !attr->is_initialized )
return EINVAL;
*detachstate = attr->detachstate;
return 0;
}
/*PAGE
*
* 16.1.1 Thread Creation Attributes, P1003.1c/Draft 10, p, 140
*/
int pthread_attr_setdetachstate(
pthread_attr_t *attr,
int detachstate
)
{
if ( !attr || !attr->is_initialized )
return EINVAL;
attr->detachstate = detachstate;
return 0;
}
#ifdef NOT_IMPLEMENTED_YET
/*PAGE
*
* 16.1.2 Thread Creation, P1003.1c/Draft 10, p. 144
*/
int pthread_create(
pthread_t *thread,
const pthread_attr_t *attr,
void (*start_routine)( void * ),
void *arg
)
{
return POSIX_NOT_IMPLEMENTED();
}
/*PAGE
*
* 16.1.3 Wait for Thread Termination, P1003.1c/Draft 10, p. 147
*/
int pthread_join(
pthread_t thread,
void **value_ptr
)
{
return POSIX_NOT_IMPLEMENTED();
}
/*PAGE
*
* 16.1.4 Detaching a Thread, P1003.1c/Draft 10, p. 149
*/
int pthread_detach(
pthread_t thread
)
{
return POSIX_NOT_IMPLEMENTED();
}
#endif
/*PAGE
*
* 16.1.6 Get Calling Thread's ID, p1003.1c/Draft 10, p. XXX
*/
pthread_t pthread_self( void )
{
return _Thread_Executing->Object.id;
}
/*PAGE
*
* 16.1.7 Compare Thread IDs, p1003.1c/Draft 10, p. 153
*/
int pthread_equal(
pthread_t t1,
pthread_t t2
)
{
#ifdef RTEMS_DEBUG
/* XXX may want to do a "get" to make sure both are valid. */
/* XXX behavior is undefined if not valid pthread_t's */
#endif
return _Objects_Are_ids_equal( t1, t1 );
}
/*PAGE
*
* 16.1.8 Dynamic Package Initialization
*/
int pthread_once(
pthread_once_t *once_control,
void (*init_routine)(void)
)
{
/* XXX: Should we implement this routine this way or make it a full */
/* XXX: fledged object? */
if ( !once_control || !init_routine )
return EINVAL;
_Thread_Disable_dispatch();
if ( !once_control->is_initialized ) {
once_control->is_initialized = TRUE;
once_control->init_executed = TRUE;
(*init_routine)();
} if ( !once_control->init_executed ) {
once_control->init_executed = TRUE;
(*init_routine)();
}
_Thread_Enable_dispatch();
return 0;
}
#ifdef NOT_IMPLEMENTED_YET
/*PAGE
*
* 20.1.6 Accessing a Thread CPU-time Clock, P1003.4b/D8, p. 58
*/
int pthread_getcpuclockid(
pthread_t pid,
clockid_t *clock_id
)
{
return POSIX_NOT_IMPLEMENTED();
}
#endif
/*PAGE
*
* 20.1.7 CPU-time Clock Thread Creation Attribute, P1003.4b/D8, p. 59
*/
int pthread_attr_setcputime(
pthread_attr_t *attr,
int clock_allowed
)
{
if ( !attr || !attr->is_initialized )
return EINVAL;
attr->cputime_clock_allowed = clock_allowed;
return 0;
}
/*PAGE
*
* 20.1.7 CPU-time Clock Thread Creation Attribute, P1003.4b/D8, p. 59
*/
int pthread_attr_getcputime(
pthread_attr_t *attr,
int *clock_allowed
)
{
if ( !attr || !attr->is_initialized )
return EINVAL;
*clock_allowed = attr->cputime_clock_allowed;
return 0;
}