select2.c

Netscape NSPR库源码

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 
 * The contents of this file are subject to the Mozilla Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/MPL/
 * 
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 * 
 * The Original Code is the Netscape Portable Runtime (NSPR).
 * 
 * The Initial Developer of the Original Code is Netscape
 * Communications Corporation.  Portions created by Netscape are 
 * Copyright (C) 1998-2000 Netscape Communications Corporation.  All
 * Rights Reserved.
 * 
 * Contributor(s):
 * 
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU General Public License Version 2 or later (the
 * "GPL"), in which case the provisions of the GPL are applicable 
 * instead of those above.  If you wish to allow use of your 
 * version of this file only under the terms of the GPL and not to
 * allow others to use your version of this file under the MPL,
 * indicate your decision by deleting the provisions above and
 * replace them with the notice and other provisions required by
 * the GPL.  If you do not delete the provisions above, a recipient
 * may use your version of this file under either the MPL or the
 * GPL.
 */

/***********************************************************************
**
** Name: select2.c
**
** Description: Measure PR_Select and Empty_Select performance.
**
** Modification History:
** 20-May-97 AGarcia- Converted the test to accomodate the debug_mode flag.
**	         The debug mode will print all of the printfs associated with this test.
**			 The regress mode will be the default mode. Since the regress tool limits
**           the output to a one line status:PASS or FAIL,all of the printf statements
**			 have been handled with an if (debug_mode) statement. 
***********************************************************************/

/***********************************************************************
** Includes
***********************************************************************/
/* Used to get the command line option */
#include "plgetopt.h"
#include "prttools.h"
#include "primpl.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if defined(OS2)
#include <sys/time.h>
#endif

#define PORT 8000
#define DEFAULT_COUNT 10
PRInt32 count;


/***********************************************************************
** PRIVATE FUNCTION:    Test_Result
** DESCRIPTION: Used in conjunction with the regress tool, prints out the
**				status of the test case.
** INPUTS:      PASS/FAIL
** OUTPUTS:     None
** RETURN:      None
** SIDE EFFECTS:
**      
** RESTRICTIONS:
**      None
** MEMORY:      NA
** ALGORITHM:   Determine what the status is and print accordingly.
**      
***********************************************************************/


static void Test_Result (int result)
{
	switch (result)
	{
		case PASS:
			printf ("PASS\n");
			break;
		case FAIL:
			printf ("FAIL\n");
			break;
		default:
			printf ("NOSTATUS\n");
			break;
	}
}

static void EmptyPRSelect(void)
{
    PRInt32 index = count;
    PRInt32 rv;

    for (; index--;)
        rv = PR_Select(0, NULL, NULL, NULL, PR_INTERVAL_NO_WAIT);
}

static void EmptyNativeSelect(void)
{
    PRInt32 rv;
    PRInt32 index = count;
    struct timeval timeout;

    timeout.tv_sec = timeout.tv_usec = 0;
    for (; index--;)
        rv = select(0, NULL, NULL, NULL, &timeout);
}

static void PRSelectTest(void)
{
    PRFileDesc *listenSocket;
    PRNetAddr serverAddr;

    if ( (listenSocket = PR_NewTCPSocket()) == NULL) {
        if (debug_mode) printf("\tServer error creating listen socket\n");
        return;
    }

    memset(&serverAddr, 0, sizeof(PRNetAddr));
    serverAddr.inet.family = AF_INET;
    serverAddr.inet.port = PR_htons(PORT);
    serverAddr.inet.ip = PR_htonl(INADDR_ANY);

    if ( PR_Bind(listenSocket, &serverAddr) == PR_FAILURE) {
        if (debug_mode) printf("\tServer error binding to server address\n");
        PR_Close(listenSocket);
        return;
    }

    if ( PR_Listen(listenSocket, 128) == PR_FAILURE) {
        if (debug_mode) printf("\tServer error listening to server socket\n");
        PR_Close(listenSocket);
        return;
    }
    if (debug_mode) printf("Listening on port %d\n", PORT);

    {
        PRFileDesc *newSock;
        PRNetAddr rAddr;
        PRInt32 loops = 0;
        PR_fd_set rdset;
        PRInt32 rv;
        PRInt32 bytesRead;
        char buf[11];

        loops++;

        if (debug_mode) printf("Going into accept\n"); 

        newSock = PR_Accept(listenSocket, 
                              &rAddr,
                              PR_INTERVAL_NO_TIMEOUT);

	if (newSock) {
            if (debug_mode) printf("Got connection!\n");
        } else {
	    if (debug_mode) printf("PR_Accept failed: error code %d\n", PR_GetError());
		else Test_Result (FAIL);
        }

        PR_FD_ZERO(&rdset);
        PR_FD_SET(newSock, &rdset);

        if (debug_mode) printf("Going into select \n");

        rv = PR_Select(0, &rdset, 0, 0, PR_INTERVAL_NO_TIMEOUT);

        if (debug_mode) printf("return from select is %d\n", rv);

        if (PR_FD_ISSET(newSock, &rdset)) {
            if (debug_mode) printf("I can't believe it- the socket is ready okay!\n");
        } else {
            if (debug_mode) printf("Damn; the select test failed...\n");
			else Test_Result (FAIL);
        }

        strcpy(buf, "XXXXXXXXXX");
        bytesRead = PR_Recv(newSock, buf, 10, 0, PR_INTERVAL_NO_TIMEOUT);
	buf[10] = '\0';

        if (debug_mode) printf("Recv completed with %d bytes, %s\n", bytesRead, buf);

        PR_Close(newSock);
    }

}

#if defined(XP_UNIX)

static void NativeSelectTest(void)
{
    PRFileDesc *listenSocket;
    PRNetAddr serverAddr;

    if ( (listenSocket = PR_NewTCPSocket()) == NULL) {
        if (debug_mode) printf("\tServer error creating listen socket\n");
        return;
    }

    memset(&serverAddr, 0, sizeof(PRNetAddr));
    serverAddr.inet.family = AF_INET;
    serverAddr.inet.port = PR_htons(PORT);
    serverAddr.inet.ip = PR_htonl(INADDR_ANY);

    if ( PR_Bind(listenSocket, &serverAddr) == PR_FAILURE) {
        if (debug_mode) printf("\tServer error binding to server address\n");
        PR_Close(listenSocket);
        return;
    }

    if ( PR_Listen(listenSocket, 128) == PR_FAILURE) {
        if (debug_mode) printf("\tServer error listening to server socket\n");
        PR_Close(listenSocket);
        return;
    }
    if (debug_mode) printf("Listening on port %d\n", PORT);

    {
        PRIntn osfd;
        char buf[11];
        fd_set rdset;
        PRNetAddr rAddr;
        PRFileDesc *newSock;
        struct timeval timeout;
        PRInt32 bytesRead, rv, loops = 0;

        loops++;

        if (debug_mode) printf("Going into accept\n"); 

        newSock = PR_Accept(listenSocket, &rAddr, PR_INTERVAL_NO_TIMEOUT);

	if (newSock) {
            if (debug_mode) printf("Got connection!\n");
        } else {
	    if (debug_mode) printf("PR_Accept failed: error code %d\n", PR_GetError());
		else Test_Result (FAIL);
        }

        osfd = PR_FileDesc2NativeHandle(newSock);
        FD_ZERO(&rdset);
        FD_SET(osfd, &rdset);

        if (debug_mode) printf("Going into select \n");


        timeout.tv_sec = 2; timeout.tv_usec = 0;
        rv = select(osfd + 1, &rdset, NULL, NULL, &timeout);

        if (debug_mode) printf("return from select is %d\n", rv);

        if (FD_ISSET(osfd, &rdset)) {
            if (debug_mode)
                printf("I can't believe it- the socket is ready okay!\n");
        } else {
            if (debug_mode) printf("Damn; the select test failed...\n");
			else Test_Result (FAIL);
        }

        strcpy(buf, "XXXXXXXXXX");
        bytesRead = PR_Recv(newSock, buf, 10, 0, PR_INTERVAL_NO_TIMEOUT);
	buf[10] = '\0';

        if (debug_mode) printf("Recv completed with %d bytes, %s\n", bytesRead, buf);

        PR_Close(newSock);
    }

}  /* NativeSelectTest */

#endif /* defined(XP_UNIX) */

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

static void Measure(void (*func)(void), const char *msg)
{
    PRIntervalTime start, stop;
    double d;
    PRInt32 tot;

    start = PR_IntervalNow();
    (*func)();
    stop = PR_IntervalNow();

    d = (double)PR_IntervalToMicroseconds(stop - start);
    tot = PR_IntervalToMilliseconds(stop-start);

    if (debug_mode) printf("%40s: %6.2f usec avg, %d msec total\n", msg, d / count, tot);
}

void main(int argc, char **argv)
{
	
	/* The command line argument: -d is used to determine if the test is being run
	in debug mode. The regress tool requires only one line output:PASS or FAIL.
	All of the printfs associated with this test has been handled with a if (debug_mode)
	test.
	Usage: test_name -d
	*/
	PLOptStatus os;
	PLOptState *opt = PL_CreateOptState(argc, argv, "d:");
	while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
    {
		if (PL_OPT_BAD == os) continue;
        switch (opt->option)
        {
        case 'd':  /* debug mode */
			debug_mode = 1;
            break;
         default:
            break;
        }
    }
	PL_DestroyOptState(opt);

 /* main test */
	
    PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);
    PR_STDIO_INIT();

    if (argc > 2) {
	count = atoi(argv[2]);
    } else {
	count = DEFAULT_COUNT;
    }

#if defined(XP_UNIX)
    Measure(NativeSelectTest, "time to call 1 element select()");
#endif
    Measure(EmptyPRSelect, "time to call Empty PR_select()");
    Measure(EmptyNativeSelect, "time to call Empty select()");
    Measure(PRSelectTest, "time to call 1 element PR_select()");

	if (!debug_mode) Test_Result (NOSTATUS);
    PR_Cleanup();


}