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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 <signal.h>
volatile int Signal_occurred;
volatile int Signal_count;
void Signal_handler(
int signo
)
{
Signal_count++;
printf(
"Signal: %d caught by 0x%x (%d)\n",
signo,
pthread_self(),
Signal_count
);
Signal_occurred = 1;
}
void *POSIX_Init(
void *argument
)
{
int status;
struct sigaction act;
sigset_t mask;
sigset_t pending_set;
puts( "\n\n*** POSIX TEST 4 ***" );
/* 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 );
/* install a signal handler for SIGUSR1 */
status = sigemptyset( &act.sa_mask );
assert( !status );
act.sa_handler = Signal_handler;
act.sa_flags = 0;
sigaction( SIGUSR1, &act, NULL );
/* simple signal to process */
Signal_count = 0;
Signal_occurred = 0;
printf( "Init: send SIGUSR1 to process\n" );
status = kill( getpid(), SIGUSR1 );
assert( !status );
Signal_occurred = 0;
/* now block the signal, send it, see if it is pending, and unblock it */
empty_line();
status = sigemptyset( &mask );
assert( !status );
status = sigaddset( &mask, SIGUSR1 );
assert( !status );
printf( "Init: Block SIGUSR1\n" );
status = sigprocmask( SIG_BLOCK, &mask, NULL );
assert( !status );
status = sigpending( &pending_set );
assert( !status );
printf( "Init: Signals pending 0x%08x\n", pending_set );
printf( "Init: send SIGUSR1 to process\n" );
status = kill( getpid(), SIGUSR1 );
assert( !status );
status = sigpending( &pending_set );
assert( !status );
printf( "Init: Signals pending 0x%08x\n", pending_set );
printf( "Init: Unblock SIGUSR1\n" );
status = sigprocmask( SIG_UNBLOCK, &mask, NULL );
assert( !status );
/* now let another task get interrupted by a signal */
empty_line();
printf( "Init: create a thread interested in SIGUSR1\n" );
status = pthread_create( &Task_id, NULL, Task_1_through_3, NULL );
assert( !status );
printf( "Init: Block SIGUSR1\n" );
status = sigprocmask( SIG_BLOCK, &mask, NULL );
assert( !status );
status = sigpending( &pending_set );
assert( !status );
printf( "Init: Signals pending 0x%08x\n", pending_set );
printf( "Init: sleep so the other task can block\n" );
status = sleep( 1 );
assert( !status );
/* switch to task 1 */
printf( "Init: send SIGUSR1 to process\n" );
status = kill( getpid(), SIGUSR1 );
assert( !status );
status = sigpending( &pending_set );
assert( !status );
printf( "Init: Signals pending 0x%08x\n", pending_set );
printf( "Init: sleep so the other task can catch signal\n" );
status = sleep( 1 );
assert( !status );
/* switch to task 1 */
/* test alarm */
empty_line();
/* install a signal handler for SIGALRM and unblock it */
status = sigemptyset( &act.sa_mask );
assert( !status );
act.sa_handler = Signal_handler;
act.sa_flags = 0;
sigaction( SIGALRM, &act, NULL );
status = sigemptyset( &mask );
assert( !status );
status = sigaddset( &mask, SIGALRM );
assert( !status );
printf( "Init: Unblock SIGALRM\n" );
status = sigprocmask( SIG_UNBLOCK, &mask, NULL );
assert( !status );
/* schedule the alarm */
printf( "Init: Firing alarm in 5 seconds\n" );
status = alarm( 5 );
printf( "Init: %d seconds left on previous alarm\n", status );
assert( !status );
printf( "Init: Firing alarm in 2 seconds\n" );
status = alarm( 2 );
printf( "Init: %d seconds left on previous alarm\n", status );
assert( status );
printf( "Init: Wait 4 seconds for alarm\n" );
status = sleep( 4 );
printf( "Init: %d seconds left in sleep\n", status );
assert( status );
/* exit this thread */
puts( "*** END OF POSIX TEST 4 ***" );
exit( 0 );
return NULL; /* just so the compiler thinks we returned something */
}
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