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/*
* COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
* On-Line Applications Research Corporation (OAR).
* All rights assigned to U.S. Government, 1994.
*
* This material may be reproduced by or for the U.S. Government pursuant
* to the copyright license under the clause at DFARS 252.227-7013. This
* notice must appear in all copies of this file and its derivatives.
*
* $Id$
*/
#define CONFIGURE_INIT
#include "system.h"
#include <errno.h>
void Print_mutexattr(
char *msg,
pthread_mutexattr_t *attr
)
{
int status;
int protocol;
int prioceiling;
int pshared;
/* protocol */
status = pthread_mutexattr_getprotocol( attr, &protocol );
assert( !status );
printf( "%smutex protocol is (%d) -- ", msg, protocol );
switch ( protocol ) {
case PTHREAD_PRIO_NONE:
printf( "PTHREAD_PRIO_NONE\n" );
break;
case PTHREAD_PRIO_INHERIT:
printf( "PTHREAD_PRIO_INHERIT\n" );
break;
case PTHREAD_PRIO_PROTECT:
printf( "PTHREAD_PRIO_PROTECT\n" );
break;
default:
printf( "UNKNOWN\n" );
assert( 0 );
break;
}
/* priority ceiling */
status = pthread_mutexattr_getprioceiling( attr, &prioceiling );
assert( !status );
printf( "%smutex priority ceiling is %d\n", msg, prioceiling );
/* process shared */
status = pthread_mutexattr_getpshared( attr, &pshared );
assert( !status );
printf( "%smutex process shared is (%d) -- ", msg, pshared );
switch ( pshared ) {
case PTHREAD_PROCESS_PRIVATE:
printf( "PTHREAD_PROCESS_PRIVATE\n" );
break;
case PTHREAD_PROCESS_SHARED:
printf( "PTHREAD_PROCESS_SHARED\n" );
break;
default:
printf( "UNKNOWN\n" );
assert( 0 );
break;
}
}
void *POSIX_Init(
void *argument
)
{
int status;
pthread_mutexattr_t attr;
struct timespec times;
puts( "\n\n*** POSIX TEST 5 ***" );
/* set the time of day, and print our buffer in multiple ways */
set_time( TM_FRIDAY, TM_MAY, 24, 96, 11, 5, 0 );
/* get id of this thread */
Init_id = pthread_self();
printf( "Init's ID is 0x%08x\n", Init_id );
/* basic checkout of mutex attributes */
printf( "Init: Initializing mutex attributes\n" );
status = pthread_mutexattr_init( &attr );
assert( !status );
Print_mutexattr( "Init: ", &attr );
printf( "Init: Changing mutex attributes\n" );
status = pthread_mutexattr_setprotocol( &attr, PTHREAD_PRIO_INHERIT );
assert( !status );
status = pthread_mutexattr_setprioceiling( &attr, 128 );
assert( !status );
status = pthread_mutexattr_setpshared( &attr, PTHREAD_PROCESS_SHARED );
assert( !status );
Print_mutexattr( "Init: ", &attr );
printf( "Init: Resetting mutex attributes\n" );
status = pthread_mutexattr_init( &attr );
assert( !status );
/* create a thread */
status = pthread_create( &Task_id, NULL, Task_1_through_3, NULL );
assert( !status );
/* now try some basic mutex operations */
empty_line();
printf( "Init: Creating a mutex\n" );
status = pthread_mutex_init( &Mutex_id, &attr );
if ( status )
printf( "status = %d\n", status );
assert( !status );
printf( "Init: pthread_mutex_trylock successfully\n" );
status = pthread_mutex_trylock( &Mutex_id );
if ( status )
printf( "status = %d\n", status );
assert( !status );
printf( "Init: pthread_mutex_trylock already locked\n" );
status = pthread_mutex_trylock( &Mutex_id );
if ( status != EDEADLK )
printf( "status = %d\n", status );
assert( status == EDEADLK );
printf( "Init: pthread_mutex_lock already locked\n" );
status = pthread_mutex_lock( &Mutex_id );
if ( status != EDEADLK )
printf( "status = %d\n", status );
assert( status == EDEADLK );
printf( "Init: Sleep 1 second\n" );
sleep( 1 );
/* switch to task 1 */
printf( "Init: pthread_mutex_unlock successfully\n" );
status = pthread_mutex_unlock( &Mutex_id );
if ( status )
printf( "status = %d\n", status );
assert( !status );
printf( "Init: pthread_mutex_unlock not owner\n" );
status = pthread_mutex_unlock( &Mutex_id );
if ( status != EPERM )
printf( "status = %d\n", status );
assert( status == EPERM );
times.tv_sec = 0;
times.tv_nsec = 500000000;
printf( "Init: pthread_mutex_timedlock time out in 1/2 second\n" );
status = pthread_mutex_timedlock( &Mutex_id, × );
if ( status != EAGAIN )
printf( "status = %d\n", status );
assert( status == EAGAIN );
/* switch to idle */
printf( "Init: correctly timed out waiting for mutex\n" );
puts( "*** END OF POSIX TEST 5 ***" );
exit( 0 );
return NULL; /* just so the compiler thinks we returned something */
}
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