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/*========================================================================

//

//      mqueue2.c

//

//      POSIX Message queues tests - mq_notify

//

//========================================================================

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// -------------------------------------------

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//####ECOSGPLCOPYRIGHTEND####

//========================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):     jlarmour

// Contributors:

// Date:          2000-05-18

// Purpose:       This file provides tests for POSIX mqueue mq_notify

// Description:

// Usage:

//

//####DESCRIPTIONEND####

//

//======================================================================

*/

/* CONFIGURATION */

#include <pkgconf/posix.h>

#ifndef CYGPKG_POSIX_MQUEUES

# define NA_MSG "Message queues not configured"

#elif !defined(CYGPKG_POSIX_SIGNALS)

# define NA_MSG "No POSIX signals configured"

#endif

#ifdef NA_MSG

#include <cyg/infra/testcase.h>      // test API

void

cyg_user_start(void)

{

    CYG_TEST_INIT();

    CYG_TEST_NA( NA_MSG );

}

#else

/* INCLUDES */

#include <fcntl.h>                   // O_*

#include <errno.h>                   // errno

#include <sys/stat.h>                // file modes

#include <mqueue.h>                  // Mqueue Header

#include <cyg/infra/testcase.h>      // test API

#include <signal.h>                  // signals

/* GLOBALS */

sig_atomic_t signals=0;

char buf[20];

unsigned int prio;

/* FUNCTIONS */

static int

my_memcmp(const void *m1, const void *m2, size_t n)

{

    char *s1 = (char *)m1;

    char *s2 = (char *)m2;

    while (n--) {

        if (*s1 != *s2)

            return *s1 - *s2;

        s1++;

        s2++;

    }

    return 0;

} // my_memcmp()

static char *

my_strcpy(char *s1, const char *s2)

{

    char *s = s1;

    while (*s2) {

        *s1++ = *s2++;

    }

    return s;

} // my_strcpy()

static size_t

my_strlen(const char *s)

{

    const char *start = s;

    while (*s)

        s++;

    return (s - start);

} // my_strcpy()

//************************************************************************

static void

sigusr1_handler( int signo, siginfo_t *info, void *context )

{

    ssize_t recvlen;

    char mybuf[20];

    unsigned int myprio;

    mqd_t *q = (mqd_t *)info->si_value.sival_ptr;

    CYG_TEST_PASS_FAIL( SIGUSR1 == signo, "correct signal number #1" );

    CYG_TEST_PASS_FAIL( SIGUSR1 == info->si_signo, "correct signal number #2" );

    CYG_TEST_PASS_FAIL( SI_MESGQ == info->si_code, "correct signal code" );

    signals++;

    // retrieve message and compare with buf

    recvlen = mq_receive( *q, mybuf, sizeof(mybuf), &myprio );

    CYG_TEST_PASS_FAIL( recvlen == my_strlen(buf),

                        "receive message length" );

    CYG_TEST_PASS_FAIL( 0 == my_memcmp( buf, mybuf, my_strlen(buf)),

                        "received message data intact" );

    CYG_TEST_PASS_FAIL( prio == myprio,

                        "received at correct priority" );

}

//************************************************************************

int

main(void)

{

    mqd_t q1;

    struct mq_attr attr;

    mode_t mode;

    int err;

    ssize_t recvlen;

    char mybuf[20];

    unsigned int myprio;

    struct sigevent ev;

    struct sigaction act;

    CYG_TEST_INIT();

    CYG_TEST_INFO( "Starting POSIX message test 2" );

#if 0

    if ( 0 != pthread_create( &thr, NULL, &thread, NULL ) ) {

        CYG_TEST_FAIL_FINISH( "Couldn't create a helper thread" );

    }

#endif

    attr.mq_flags = 0;

    attr.mq_maxmsg = 4;

    attr.mq_msgsize = 20;

    mode = S_IRWXU|S_IRWXG|S_IRWXO; // rwx for all

    q1 = mq_open( "/mq1", O_CREAT|O_NONBLOCK|O_RDWR, mode, &attr );

    CYG_TEST_PASS_FAIL( q1 != (mqd_t)-1, "simple mq_open (write only)" );

    err = mq_getattr( q1, &attr );

    CYG_TEST_PASS_FAIL( 0 == err, "simple mq_getattr" );

    CYG_TEST_PASS_FAIL( (4 == attr.mq_maxmsg) &&

                        (20 == attr.mq_msgsize) &&

                        (O_NONBLOCK == (attr.mq_flags & O_NONBLOCK)) &&

                        (O_RDWR == (attr.mq_flags & O_RDWR)) &&

                        (0 == attr.mq_curmsgs ), "getattr attributes correct" );

    act.sa_sigaction = &sigusr1_handler;

    sigfillset( &act.sa_mask ); // enable all signals

    act.sa_flags = SA_SIGINFO;

    if ( 0 != sigaction( SIGUSR1, &act, NULL ) ) {

        CYG_TEST_FAIL_FINISH( "Couldn't register signal handler" );

    }

    ev.sigev_notify = SIGEV_SIGNAL;

    ev.sigev_signo = SIGUSR1;

    ev.sigev_value.sival_ptr = (void *)&q1;

    err = mq_notify( q1, &ev );

    CYG_TEST_PASS_FAIL( 0 == err, "simple mq_notify" );

    my_strcpy( buf, "Vik is the best" );

    prio = 7;

    err = mq_send( q1, buf, my_strlen(buf), prio );

    CYG_TEST_PASS_FAIL( 0 == err, "mq_send #1" );

    CYG_TEST_PASS_FAIL( 1 == signals, "got notification" );

    my_strcpy( buf, "Scrummy Vik" );

    prio = 6;

    err = mq_send( q1, buf, my_strlen(buf), prio );

    CYG_TEST_PASS_FAIL( 0 == err, "mq_send #2" );

    CYG_TEST_PASS_FAIL( 1 == signals, "correctly didn't get notification" );

    recvlen = mq_receive( q1, mybuf, sizeof(mybuf), &myprio );

    CYG_TEST_PASS_FAIL( recvlen == my_strlen(buf),

                        "receive message length" );

    CYG_TEST_PASS_FAIL( 0 == my_memcmp( buf, mybuf, my_strlen(buf)),

                        "received message data intact" );

    CYG_TEST_PASS_FAIL( prio == myprio,

                        "received at correct priority" );

    err = mq_notify( q1, &ev );

    CYG_TEST_PASS_FAIL( 0 == err, "mq_notify #2" );

    err = mq_notify( q1, &ev );

    CYG_TEST_PASS_FAIL( -1 == err, "second mq_notify returns error" );

    CYG_TEST_PASS_FAIL( EBUSY == errno,

                        "errno correct for second mq_notify error" );

    err = mq_notify( q1, NULL );

    CYG_TEST_PASS_FAIL( 0 == err, "clear notification" );

    my_strcpy( buf, "Vik is k3wl" );

    prio = 8;

    err = mq_send( q1, buf, my_strlen(buf), prio );

    CYG_TEST_PASS_FAIL( 0 == err, "mq_send #2" );

    CYG_TEST_PASS_FAIL( 1 == signals, "correctly didn't get notification #2" );

    recvlen = mq_receive( q1, mybuf, sizeof(mybuf), &myprio );

    CYG_TEST_PASS_FAIL( recvlen == my_strlen(buf),

                        "receive message length" );

    CYG_TEST_PASS_FAIL( 0 == my_memcmp( buf, mybuf, my_strlen(buf)),

                        "received message data intact" );

    CYG_TEST_PASS_FAIL( prio == myprio,

                        "received at correct priority" );

    err = mq_close( q1 );

    CYG_TEST_PASS_FAIL( 0 == err, "mq_close" );

    err = mq_unlink( "/mq1" );

    CYG_TEST_PASS_FAIL( 0 == err, "mq_unlink" );

    CYG_TEST_EXIT("POSIX message test 2");

    return 0;

} // main()

//------------------------------------------------------------------------

#endif

/* EOF mqueue2.c */