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

//

//      signal1.c

//

//      ISO C signal handling test

//

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

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

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

//

// Author(s):     jlarmour

// Contributors:  

// Date:          2000-04-18

// Purpose:       Test signal functionality

// Description:   This file contains a number of tests for ISO C signal

//                handling

// Usage:         

//

//####DESCRIPTIONEND####

//

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

// CONFIGURATION

#include <pkgconf/libc_signals.h>  // libc signals configuration

// INCLUDES

#include <pkgconf/system.h>

#ifdef CYGPKG_ISOINFRA

# include <pkgconf/isoinfra.h>

#endif

#include <cyg/infra/cyg_type.h>    // Common type definitions and support

#include <cyg/infra/testcase.h>    // Test infrastructure

#include <signal.h>                // Signal functions

#include <setjmp.h>                // setjmp(), longjmp()

#include <stdlib.h>                // abort()

// STATICS

static int state;

static jmp_buf jbuf;

// FUNCTIONS

static void

myhandler1(int signal)

{

    CYG_TEST_INFO("myhandler1 called");

    ++state;

} // myhandler1()

static void

myhandler2(int signal)

{

    CYG_TEST_INFO("myhandler2 called");

    ++state;

    longjmp(jbuf, 1);

} // myhandler2()

#ifndef CYGPKG_LIBC_STARTUP

void cyg_user_start(void)

#else

int

main( int argc, char *argv[] )

#endif

{

    __sighandler_t handler1;

    int rc;

    // special callout to request GDB to alter its handling of signals

    CYG_TEST_GDBCMD("handle SIGTERM nostop");

    CYG_TEST_GDBCMD("handle SIGABRT nostop");

    CYG_TEST_INIT();

    CYG_TEST_INFO("Starting tests from testcase " __FILE__ " for C "

                  "library signal functions");

    // Test 1

    CYG_TEST_INFO("Test 1");

    state = 1;

    handler1 = signal(SIGTERM, &myhandler1);

    CYG_TEST_PASS_FAIL(handler1 == SIG_DFL,

                       "SIGTERM handler initialized to default");

    rc = raise(SIGTERM);

    CYG_TEST_PASS_FAIL(0==rc, "raise(SIGTERM) did not return error");

    CYG_TEST_PASS_FAIL(2==state, "SIGTERM handler returned correctly");

    // Test 2

    CYG_TEST_INFO("Test 2");

    state = 2;

    handler1 = signal(SIGTERM, &myhandler2);

    CYG_TEST_PASS_FAIL(handler1 == SIG_DFL,

                       "SIGTERM handler reset to default after test 1");

    handler1 = signal(SIGTERM, &myhandler1);

    CYG_TEST_PASS_FAIL(handler1 == &myhandler2,

                       "SIGTERM handler was set correctly");

    rc = raise(SIGTERM);

    CYG_TEST_PASS_FAIL(0==rc, "raise(SIGTERM) did not return error");

    CYG_TEST_PASS_FAIL(3==state, "SIGTERM handler returned correctly");

    // Test 3

    CYG_TEST_INFO("Test 3");

    handler1 = signal(SIGTERM, &myhandler2);

    CYG_TEST_PASS_FAIL(handler1 == SIG_DFL,

                       "SIGTERM handler reset to default after test 2");

    handler1 = signal(SIGTERM, SIG_DFL);

    CYG_TEST_PASS_FAIL(handler1 == &myhandler2,

                       "SIGTERM handler was set correctly");

    // Test 4

    CYG_TEST_INFO("Test 4");

    state = 4;

    handler1 = signal(SIGTERM, SIG_IGN);

    CYG_TEST_PASS_FAIL(handler1 == SIG_DFL,

                       "SIGTERM handler was set correctly after test 3");

    rc = raise(SIGTERM);

    CYG_TEST_PASS_FAIL(0==rc, "raise(SIGTERM) did not return error");

    CYG_TEST_PASS_FAIL(4==state, "SIGTERM ignored");

    // Test 5

    CYG_TEST_INFO("Test 5");

    state = 5;

    handler1 = signal(SIGTERM, &myhandler2);

    // SIG_IGN doesn't reset back to SIG_DFL after a raise()

    CYG_TEST_PASS_FAIL(handler1 == SIG_IGN,

                       "SIGTERM handler was set correctly after test 4");

    if (0==setjmp(jbuf)) {

        raise(SIGTERM);

        CYG_TEST_FAIL("raise returned");

    }

    CYG_TEST_PASS_FAIL(6==state, "SIGTERM handler returned correctly");

#if defined(CYGINT_ISO_ENVIRON) && (CYGINT_ISO_ENVIRON > 0)    

    // Test 6

    CYG_TEST_INFO("Test 6");

    state = 6;

    handler1 = signal(SIGABRT, &myhandler2);

    CYG_TEST_PASS_FAIL(handler1 == SIG_DFL,

                       "SIGABRT handler initialized to default");

    if (0==setjmp(jbuf)) {

        abort();

        CYG_TEST_FAIL("abort returned");

    }

    CYG_TEST_PASS_FAIL(7==state, "SIGABRT handler returned correctly");

#else

    CYG_TEST_INFO("skipping abort() test, function not implemented");

#endif    

    CYG_TEST_FINISH("Finished tests from testcase " __FILE__ " for C "

                    "library signal functions");

} // main()

// EOF signal1.c