/* -*- 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
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
* File: pipeself.c
*
* Description:
* This test has two threads communicating with each other using
* two unidirectional pipes. The primordial thread is the ping
* thread and the other thread is the pong thread. The ping
* thread writes "ping" to the pong thread and the pong thread
* writes "pong" back.
*/
#include "prio.h"
#include "prerror.h"
#include "prthread.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define NUM_ITERATIONS
10
static PRFileDesc *ping_in, *ping_out;
static PRFileDesc *pong_in, *pong_out;
static void PongThreadFunc(
void * arg) {
char buf[
1024 ];
int idx;
PRInt32 nBytes;
PRStatus status;
for (idx =
0 ; idx < NUM_ITERATIONS; idx++) {
memset(buf,
0 ,
sizeof (buf));
nBytes = PR_Read(pong_in, buf,
sizeof (buf));
if (nBytes == -
1 ) {
fprintf(stderr,
"PR_Read failed\n" );
exit (
1 );
}
printf(
"pong thread: received \" %s\
"\n" , buf);
if (nBytes !=
5 ) {
fprintf(stderr,
"pong thread: expected 5 bytes but got %d bytes\n" ,
nBytes);
exit (
1 );
}
if (strcmp(buf,
"ping" ) !=
0 ) {
fprintf(stderr,
"pong thread: expected \" ping\
" but got \" %s\
"\n" , buf);
exit (
1 );
}
strcpy(buf,
"pong" );
printf(
"pong thread: sending \" %s\
"\n" , buf);
nBytes = PR_Write(pong_out, buf,
5 );
if (nBytes == -
1 ) {
fprintf(stderr,
"PR_Write failed: (%d, %d)\n" , PR_GetError(),
PR_GetOSError());
exit (
1 );
}
}
status = PR_Close(pong_in);
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_Close failed\n" );
exit (
1 );
}
status = PR_Close(pong_out);
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_Close failed\n" );
exit (
1 );
}
}
int main(
int argc,
char ** argv) {
PRStatus status;
PRThread* pongThread;
char buf[
1024 ];
PRInt32 nBytes;
int idx;
status = PR_CreatePipe(&ping_in, &pong_out);
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_CreatePipe failed\n" );
exit (
1 );
}
status = PR_CreatePipe(&pong_in, &ping_out);
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_CreatePipe failed\n" );
exit (
1 );
}
pongThread =
PR_CreateThread(PR_USER_THREAD, PongThreadFunc, NULL, PR_PRIORITY_NORMAL,
PR_GLOBAL_THREAD, PR_JOINABLE_THREAD,
0 );
if (pongThread == NULL) {
fprintf(stderr,
"PR_CreateThread failed\n" );
exit (
1 );
}
for (idx =
0 ; idx < NUM_ITERATIONS; idx++) {
strcpy(buf,
"ping" );
printf(
"ping thread: sending \" %s\
"\n" , buf);
nBytes = PR_Write(ping_out, buf,
5 );
if (nBytes == -
1 ) {
fprintf(stderr,
"PR_Write failed: (%d, %d)\n" , PR_GetError(),
PR_GetOSError());
exit (
1 );
}
memset(buf,
0 ,
sizeof (buf));
nBytes = PR_Read(ping_in, buf,
sizeof (buf));
if (nBytes == -
1 ) {
fprintf(stderr,
"PR_Read failed\n" );
exit (
1 );
}
printf(
"ping thread: received \" %s\
"\n" , buf);
if (nBytes !=
5 ) {
fprintf(stderr,
"ping thread: expected 5 bytes but got %d bytes\n" ,
nBytes);
exit (
1 );
}
if (strcmp(buf,
"pong" ) !=
0 ) {
fprintf(stderr,
"ping thread: expected \" pong\
" but got \" %s\
"\n" , buf);
exit (
1 );
}
}
status = PR_Close(ping_in);
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_Close failed\n" );
exit (
1 );
}
status = PR_Close(ping_out);
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_Close failed\n" );
exit (
1 );
}
status = PR_JoinThread(pongThread);
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_JoinThread failed\n" );
exit (
1 );
}
#if defined (XP_UNIX)
/*
* Test PR_Available for pipes
*/
status = PR_CreatePipe(&ping_in, &ping_out);
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_CreatePipe failed\n" );
exit (
1 );
}
nBytes = PR_Write(ping_out, buf,
250 );
if (nBytes == -
1 ) {
fprintf(stderr,
"PR_Write failed: (%d, %d)\n" , PR_GetError(),
PR_GetOSError());
exit (
1 );
}
nBytes = PR_Available(ping_in);
if (nBytes <
0 ) {
fprintf(stderr,
"PR_Available failed: (%d, %d)\n" , PR_GetError(),
PR_GetOSError());
exit (
1 );
}
else if (nBytes !=
250 ) {
fprintf(stderr,
"PR_Available: expected 250 bytes but got %d bytes\n" ,
nBytes);
exit (
1 );
}
printf(
"PR_Available: expected %d, got %d bytes\n" ,
250 , nBytes);
/* read some data */
nBytes = PR_Read(ping_in, buf,
7 );
if (nBytes == -
1 ) {
fprintf(stderr,
"PR_Read failed\n" );
exit (
1 );
}
/* check available data */
nBytes = PR_Available(ping_in);
if (nBytes <
0 ) {
fprintf(stderr,
"PR_Available failed: (%d, %d)\n" , PR_GetError(),
PR_GetOSError());
exit (
1 );
}
else if (nBytes != (
250 -
7 )) {
fprintf(stderr,
"PR_Available: expected 243 bytes but got %d bytes\n" ,
nBytes);
exit (
1 );
}
printf(
"PR_Available: expected %d, got %d bytes\n" ,
243 , nBytes);
/* read all data */
nBytes = PR_Read(ping_in, buf,
sizeof (buf));
if (nBytes == -
1 ) {
fprintf(stderr,
"PR_Read failed\n" );
exit (
1 );
}
else if (nBytes !=
243 ) {
fprintf(stderr,
"PR_Read failed: expected %d, got %d bytes\n" ,
243 , nBytes);
exit (
1 );
}
/* check available data */
nBytes = PR_Available(ping_in);
if (nBytes <
0 ) {
fprintf(stderr,
"PR_Available failed: (%d, %d)\n" , PR_GetError(),
PR_GetOSError());
exit (
1 );
}
else if (nBytes !=
0 ) {
fprintf(stderr,
"PR_Available: expected 0 bytes but got %d bytes\n" ,
nBytes);
exit (
1 );
}
printf(
"PR_Available: expected %d, got %d bytes\n" ,
0 , nBytes);
status = PR_Close(ping_in);
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_Close failed\n" );
exit (
1 );
}
status = PR_Close(ping_out);
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_Close failed\n" );
exit (
1 );
}
#endif /* XP_UNIX */
printf(
"PASS\n" );
return 0 ;
}
Messung V0.5 in Prozent C=91 H=95 G=92
¤ Dauer der Verarbeitung: 0.12 Sekunden
(vorverarbeitet am 2026-06-04)
¤
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