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/*

 *  COPYRIGHT (c) 1989-1999.

 *  On-Line Applications Research Corporation (OAR).

 *

 *  The license and distribution terms for this file may be

 *  found in the file LICENSE in this distribution or at

 *  http://www.OARcorp.com/rtems/license.html.

 *

 *  $Id: init.c,v 1.2 2001-09-27 12:02:23 chris Exp $

 */

#define CONFIGURE_INIT

#include "system.h"

#include <signal.h>

#include <errno.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 timespec   timeout;

  struct sigaction  act;

  sigset_t          mask;

  sigset_t          waitset;

  int               signo;

  siginfo_t         siginfo;

  puts( "\n\n*** POSIX TEST 3 ***" );

  /* 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 */

  status = sigemptyset( &act.sa_mask );

  assert( !status );

  act.sa_handler = Signal_handler;

  act.sa_flags   = 0;

  sigaction( SIGUSR1, &act, NULL );

  /* initialize signal handler variables */

  Signal_count = 0;

  Signal_occurred = 0;

  /*

   *  wait on SIGUSR1 for 3 seconds, will timeout

   */

  /* initialize the signal set we will wait for to SIGUSR1 */

  status = sigemptyset( &waitset );

  assert( !status );

  status = sigaddset( &waitset, SIGUSR1 );

  assert( !status );

  timeout.tv_sec = 3;

  timeout.tv_nsec = 0;

  puts( "Init: waiting on any signal for 3 seconds." );

  signo = sigtimedwait( &waitset, &siginfo, &timeout );

  assert( signo == -1 );

  if ( errno == EAGAIN )

    puts( "Init: correctly timed out waiting for SIGUSR1." );

  else

    printf( "sigtimedwait returned wrong errno - %d\n", errno );

  Signal_occurred = 0;

  /*

   *  wait on SIGUSR1 for 3 seconds, will timeout because Task_1 sends SIGUSR2

   */

  empty_line();

  /* initialize a mask to block SIGUSR2 */

  status = sigemptyset( &mask );

  assert( !status );

  status = sigaddset( &mask, SIGUSR2 );

  assert( !status );

  printf( "Init: Block SIGUSR2\n" );

  status = sigprocmask( SIG_BLOCK, &mask, NULL );

  assert( !status );

  /* create a thread */

  status = pthread_create( &Task_id, NULL, Task_1, NULL );

  assert( !status );

  /* signal handler is still installed, waitset is still set for SIGUSR1 */

  timeout.tv_sec = 3;

  timeout.tv_nsec = 0;

  puts( "Init: waiting on any signal for 3 seconds." );

  signo = sigtimedwait( &waitset, &siginfo, &timeout );

     /* switch to Task 1 */

  if ( errno == EAGAIN )

    puts( "Init: correctly timed out waiting for SIGUSR1." );

  else

    printf( "sigtimedwait returned wrong errno - %d\n", errno );

  assert( signo == -1 );

  /*

   *  wait on SIGUSR1 for 3 seconds, Task_2 will send it to us

   */

  empty_line();

  /* create a thread */

  status = pthread_create( &Task_id, NULL, Task_2, NULL );

  assert( !status );

  /* signal handler is still installed, waitset is still set for SIGUSR1 */

  /* wait on SIGUSR1 for 3 seconds, will receive SIGUSR1 from Task_2 */

  timeout.tv_sec = 3;

  timeout.tv_nsec = 0;

  /* just so we can check that these were altered */

  siginfo.si_code = -1;

  siginfo.si_signo = -1;

  siginfo.si_value.sival_int = -1;

  puts( "Init: waiting on any signal for 3 seconds." );

  signo = sigtimedwait( &waitset, &siginfo, &timeout );

  printf( "Init: received (%d) SIGUSR1=%d\n", siginfo.si_signo, SIGUSR1 );

  assert( signo == SIGUSR1 );

  assert( siginfo.si_signo == SIGUSR1 );

  assert( siginfo.si_code == SI_USER );

  assert( siginfo.si_value.sival_int != -1 );   /* rtems does always set this */

  /* try out a process signal */

  empty_line();

  puts( "Init: kill with SIGUSR2." );

  status = kill( getpid(), SIGUSR2 );

  assert( !status );

  siginfo.si_code = -1;

  siginfo.si_signo = -1;

  siginfo.si_value.sival_int = -1;

  status = sigemptyset( &waitset );

  assert( !status );

  status = sigaddset( &waitset, SIGUSR1 );

  assert( !status );

  status = sigaddset( &waitset, SIGUSR2 );

  assert( !status );

  puts( "Init: waiting on any signal for 3 seconds." );

  signo = sigtimedwait( &waitset, &siginfo, &timeout );

  printf( "Init: received (%d) SIGUSR2=%d\n", siginfo.si_signo, SIGUSR2 );

  assert( signo == SIGUSR2 );

  assert( siginfo.si_signo == SIGUSR2 );

  assert( siginfo.si_code == SI_USER );

  assert( siginfo.si_value.sival_int != -1 );   /* rtems does always set this */

  /* exit this thread */

  puts( "*** END OF POSIX TEST 3 ***" );

  exit( 0 );

  return NULL; /* just so the compiler thinks we returned something */

}