michael@0: /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: /***********************************************************************
michael@0: **
michael@0: ** Name: fileio.c
michael@0: **
michael@0: ** Description: Program to copy one file to another. 
michael@0: **
michael@0: ** Modification History:
michael@0: ** 14-May-97 AGarcia- Converted the test to accomodate the debug_mode flag.
michael@0: **	         The debug mode will print all of the printfs associated with this test.
michael@0: **			 The regress mode will be the default mode. Since the regress tool limits
michael@0: **           the output to a one line status:PASS or FAIL,all of the printf statements
michael@0: **			 have been handled with an if (debug_mode) statement.
michael@0: ** 04-June-97 AGarcia removed the Test_Result function. Regress tool has been updated to
michael@0: **			recognize the return code from tha main program.
michael@0: ** 12-June-97 Revert to return code 0 and 1, remove debug option (obsolete).
michael@0: ***********************************************************************/
michael@0: 
michael@0: /***********************************************************************
michael@0: ** Includes
michael@0: ***********************************************************************/
michael@0: #include "prinit.h"
michael@0: #include "prthread.h"
michael@0: #include "prlock.h"
michael@0: #include "prcvar.h"
michael@0: #include "prmon.h"
michael@0: #include "prmem.h"
michael@0: #include "prio.h"
michael@0: #include "prlog.h"
michael@0: 
michael@0: #include <stdio.h>
michael@0: 
michael@0: #include "obsolete/prsem.h"
michael@0: 
michael@0: 
michael@0: #define TBSIZE 1024
michael@0: 
michael@0: static PRUint8 tbuf[TBSIZE];
michael@0: 
michael@0: static PRFileDesc *t1, *t2;
michael@0: 
michael@0: PRIntn failed_already=0;
michael@0: PRIntn debug_mode;
michael@0: static void InitialSetup(void)
michael@0: {
michael@0: 	PRUintn	i;
michael@0: 	PRInt32 nWritten, rv;
michael@0: 	
michael@0: 	t1 = PR_Open("t1.tmp", PR_CREATE_FILE | PR_RDWR, 0);
michael@0: 	PR_ASSERT(t1 != NULL);	
michael@0: 	
michael@0: 	for (i=0; i<TBSIZE; i++)
michael@0: 		tbuf[i] = i;
michael@0: 		
michael@0: 	nWritten = PR_Write((PRFileDesc*)t1, tbuf, TBSIZE);
michael@0: 	PR_ASSERT(nWritten == TBSIZE);	
michael@0:    		
michael@0: 	rv = PR_Seek(t1,0,PR_SEEK_SET);
michael@0: 	PR_ASSERT(rv == 0);	
michael@0: 
michael@0:    	t2 = PR_Open("t2.tmp", PR_CREATE_FILE | PR_RDWR, 0);
michael@0: 	PR_ASSERT(t2 != NULL);	
michael@0: }
michael@0: 
michael@0: 
michael@0: static void VerifyAndCleanup(void)
michael@0: {
michael@0: 	PRUintn	i;
michael@0: 	PRInt32 nRead, rv;
michael@0: 	
michael@0: 	for (i=0; i<TBSIZE; i++)
michael@0: 		tbuf[i] = 0;
michael@0: 		
michael@0: 	rv = PR_Seek(t2,0,PR_SEEK_SET);
michael@0: 	PR_ASSERT(rv == 0);	
michael@0: 
michael@0: 	nRead = PR_Read((PRFileDesc*)t2, tbuf, TBSIZE);
michael@0: 	PR_ASSERT(nRead == TBSIZE);	
michael@0:    		
michael@0: 	for (i=0; i<TBSIZE; i++)
michael@0: 		if (tbuf[i] != (PRUint8)i) {
michael@0: 			if (debug_mode) printf("data mismatch for index= %d \n", i);
michael@0: 			else failed_already=1;
michael@0: 		}
michael@0:    	PR_Close(t1);
michael@0:    	PR_Close(t2);
michael@0: 
michael@0:    	PR_Delete("t1.tmp");
michael@0:    	PR_Delete("t2.tmp");
michael@0: 
michael@0:     if (debug_mode) printf("fileio test passed\n");
michael@0: }
michael@0: 
michael@0: 
michael@0: /*------------------ Following is the real test program ---------*/
michael@0: /*
michael@0: 	Program to copy one file to another.  Two temporary files get
michael@0: 	created.  First one gets written in one write call.  Then,
michael@0: 	a reader thread reads from this file into a double buffer.
michael@0: 	The writer thread writes from double buffer into the other
michael@0: 	temporary file.  The second temporary file gets verified
michael@0: 	for accurate data.
michael@0: */
michael@0: 
michael@0: PRSemaphore	*emptyBufs;	/* number of empty buffers */
michael@0: PRSemaphore *fullBufs;	/* number of buffers that are full */
michael@0: 
michael@0: #define BSIZE	100
michael@0: 
michael@0: struct {
michael@0: 	char data[BSIZE];
michael@0: 	PRUintn nbytes;		/* number of bytes in this buffer */
michael@0: } buf[2];
michael@0: 
michael@0: static void PR_CALLBACK reader(void *arg)
michael@0: {
michael@0: 	PRUintn	i = 0;
michael@0: 	PRInt32	nbytes;
michael@0: 	
michael@0: 	do {
michael@0: 		(void) PR_WaitSem(emptyBufs);
michael@0: 		nbytes = PR_Read((PRFileDesc*)arg, buf[i].data, BSIZE);
michael@0: 		if (nbytes >= 0) {
michael@0: 			buf[i].nbytes = nbytes;
michael@0: 			PR_PostSem(fullBufs);
michael@0: 			i = (i + 1) % 2;
michael@0: 		}
michael@0: 	} while (nbytes > 0);
michael@0: }
michael@0: 
michael@0: static void PR_CALLBACK writer(void *arg)
michael@0: {
michael@0: 	PRUintn	i = 0;
michael@0: 	PRInt32	nbytes;
michael@0: 	
michael@0: 	do {
michael@0: 		(void) PR_WaitSem(fullBufs);
michael@0: 		nbytes = buf[i].nbytes;
michael@0: 		if (nbytes > 0) {
michael@0: 			nbytes = PR_Write((PRFileDesc*)arg, buf[i].data, nbytes);
michael@0: 			PR_PostSem(emptyBufs);
michael@0: 			i = (i + 1) % 2;
michael@0: 		}
michael@0: 	} while (nbytes > 0);
michael@0: }
michael@0: 
michael@0: int main(int argc, char **argv)
michael@0: {
michael@0: 	PRThread *r, *w;
michael@0: 
michael@0: 
michael@0: 	PR_Init(PR_USER_THREAD, PR_PRIORITY_NORMAL, 0);
michael@0:     PR_STDIO_INIT();
michael@0: 
michael@0:     emptyBufs = PR_NewSem(2);	/* two empty buffers */
michael@0: 
michael@0:     fullBufs = PR_NewSem(0);	/* zero full buffers */
michael@0: 
michael@0: 	/* Create initial temp file setup */
michael@0: 	InitialSetup();
michael@0: 	
michael@0: 	/* create the reader thread */
michael@0: 	
michael@0: 	r = PR_CreateThread(PR_USER_THREAD,
michael@0: 				      reader, t1, 
michael@0: 				      PR_PRIORITY_NORMAL,
michael@0: 				      PR_LOCAL_THREAD,
michael@0:     				  PR_JOINABLE_THREAD,
michael@0: 				      0);
michael@0: 
michael@0: 	w = PR_CreateThread(PR_USER_THREAD,
michael@0: 				      writer, t2, 
michael@0: 				      PR_PRIORITY_NORMAL,
michael@0:                       PR_LOCAL_THREAD,
michael@0:                       PR_JOINABLE_THREAD,
michael@0:                       0);
michael@0: 
michael@0:     /* Do the joining for both threads */
michael@0:     (void) PR_JoinThread(r);
michael@0:     (void) PR_JoinThread(w);
michael@0: 
michael@0:     /* Do the verification and clean up */
michael@0:     VerifyAndCleanup();
michael@0: 
michael@0:     PR_DestroySem(emptyBufs);
michael@0:     PR_DestroySem(fullBufs);
michael@0: 
michael@0:     PR_Cleanup();
michael@0: 
michael@0:     if(failed_already)
michael@0:     {
michael@0:         printf("Fail\n");
michael@0:         return 1;
michael@0:     }
michael@0:     else
michael@0:     {
michael@0:         printf("PASS\n");
michael@0:         return 0;
michael@0:     }
michael@0: 
michael@0: 
michael@0: }