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