/*

* Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

* T_WAITPID.CPP

* 

*

*/

#include <stdlib.h>

#include <stdio.h>

#include <string.h>

#include <unistd.h>

#include <sys/errno.h>

#include <sys/wait.h>

#include "CTEST.H"

int fids[3];

test_Data;

// simple function so the parent can wait for child and test waitpid	

void doafunc()

	{

	sleep(5);

	exit(0);

	}

/**

@SYMTestCaseID 			SYSLIB-STDLIB-UT-1576

@SYMTestCaseDesc	    Testing if POSIX waitpid function conforms to POSIX standard

@SYMTestPriority 	    High

@SYMTestActions  	    Starts a new processes and tests the POSIX waitpid function with 

						different parameters and checks if it behaves correctly

@SYMTestExpectedResults The test should not fail.

@SYMDEF 				INC073739

*/

int test_waitpid()

	{

	test_Data;

	void* proc;

	void* proc2;

	int ret;

	int status=-1;

	test_Title("WAITPID");

	test_Next("waitpid");

	proc = create_process(doafunc, "A", "rw", fids);

	if (proc)

		start_process(proc);

	else

		perror("Failed to start process A: ");

	// test return values of calls to waitpid with different options and pid's

	if (proc)

		{

		// test with option WNOHANG and a correct pid on an active process

		ret = wait_for_process_id(proc,get_proc_id(proc),WNOHANG,&status);

		test(ret==0);

		// test with an invalid pid 

		ret = wait_for_process_id(proc,99,0,&status);

		test(errno==ECHILD&&ret==-1);

		// test with invalid options

		ret = wait_for_process_id(proc,99,17,&status);

		test(errno==EINVAL&&ret==-1);

		ret = wait_for_process_id(proc,99,18,&status);

		test(errno==EINVAL&&ret==-1);

		// process is still active keep waiting until it dies

		do 

			{

			ret = wait_for_process_id(proc,get_proc_id(proc),WNOHANG,&status);

			}

		while(!WIFEXITED(status)&&ret==0);

		test(ret==get_proc_id(proc));

   		printf("child exited, status=%d\n", WEXITSTATUS(status));

		}

	// create another process and test waitpid with pid -1 and options 0

	// this is the same as calling wait

	proc2 = create_process(doafunc, "B", "rw", fids);

	if (proc2)

		start_process(proc2);

	else

		perror("Failed to start process B: ");

	if (proc2)

		{

		//wait for proc2 to finish

		do

			{

        	ret = wait_for_process_id(proc2,-1,0,&status);

    		}

    	while (!WIFEXITED(status));

		test(ret==get_proc_id(proc2));

    	printf("child exited, status=%d\n", WEXITSTATUS(status));

		}

	fflush(stdout);

	fclose(stdout);

	test_Close();

	return 0;

	}

int main (int argc, char *argv[])

	{

	start_redirection_server();

	if(argc>1)

		//do something with child process

		doafunc();

	else

		test_waitpid();

	// exit here for the moment crt0 libraries panic

	exit(0);

	return 0;

	}