/* -*- 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: pipeping2.c
*
* Description:
* This test runs in conjunction with the pipepong2 test.
* This test creates two pipes and passes two pipe fd's
* to the pipepong2 test. Then this test writes "ping" to
* to the pipepong2 test and the pipepong2 test writes "pong"
* back. To run this pair of tests, just invoke pipeping2.
*
* Tested areas: process creation, pipes, file descriptor
* inheritance.
*/
#include "prerror.h"
#include "prio.h"
#include "prproces.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define NUM_ITERATIONS
10
static char * child_argv[] = {
"pipepong2" , NULL};
int main(
int argc,
char ** argv) {
PRFileDesc* in_pipe[
2 ];
PRFileDesc* out_pipe[
2 ];
PRStatus status;
PRProcess* process;
PRProcessAttr* attr;
char buf[
1024 ];
PRInt32 nBytes;
PRInt32 exitCode;
int idx;
status = PR_CreatePipe(&in_pipe[
0 ], &in_pipe[
1 ]);
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_CreatePipe failed\n" );
exit (
1 );
}
status = PR_CreatePipe(&out_pipe[
0 ], &out_pipe[
1 ]);
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_CreatePipe failed\n" );
exit (
1 );
}
status = PR_SetFDInheritable(in_pipe[
0 ], PR_FALSE);
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_SetFDInheritable failed\n" );
exit (
1 );
}
status = PR_SetFDInheritable(in_pipe[
1 ], PR_TRUE);
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_SetFDInheritable failed\n" );
exit (
1 );
}
status = PR_SetFDInheritable(out_pipe[
0 ], PR_TRUE);
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_SetFDInheritable failed\n" );
exit (
1 );
}
status = PR_SetFDInheritable(out_pipe[
1 ], PR_FALSE);
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_SetFDInheritable failed\n" );
exit (
1 );
}
attr = PR_NewProcessAttr();
if (attr == NULL) {
fprintf(stderr,
"PR_NewProcessAttr failed\n" );
exit (
1 );
}
status = PR_ProcessAttrSetInheritableFD(attr, out_pipe[
0 ],
"PIPE_READ" );
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_ProcessAttrSetInheritableFD failed\n" );
exit (
1 );
}
status = PR_ProcessAttrSetInheritableFD(attr, in_pipe[
1 ],
"PIPE_WRITE" );
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_ProcessAttrSetInheritableFD failed\n" );
exit (
1 );
}
process = PR_CreateProcess(child_argv[
0 ], child_argv, NULL, attr);
if (process == NULL) {
fprintf(stderr,
"PR_CreateProcess failed\n" );
exit (
1 );
}
PR_DestroyProcessAttr(attr);
status = PR_Close(out_pipe[
0 ]);
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_Close failed\n" );
exit (
1 );
}
status = PR_Close(in_pipe[
1 ]);
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_Close failed\n" );
exit (
1 );
}
for (idx =
0 ; idx < NUM_ITERATIONS; idx++) {
strcpy(buf,
"ping" );
printf(
"ping process: sending \" %s\
"\n" , buf);
nBytes = PR_Write(out_pipe[
1 ], 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(in_pipe[
0 ], buf,
sizeof (buf));
if (nBytes == -
1 ) {
fprintf(stderr,
"PR_Read failed\n" );
exit (
1 );
}
printf(
"ping process: received \" %s\
"\n" , buf);
if (nBytes !=
5 ) {
fprintf(stderr,
"ping process: expected 5 bytes but got %d bytes\n" ,
nBytes);
exit (
1 );
}
if (strcmp(buf,
"pong" ) !=
0 ) {
fprintf(stderr,
"ping process: expected \" pong\
" but got \" %s\
"\n" , buf);
exit (
1 );
}
}
status = PR_Close(in_pipe[
0 ]);
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_Close failed\n" );
exit (
1 );
}
status = PR_Close(out_pipe[
1 ]);
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_Close failed\n" );
exit (
1 );
}
status = PR_WaitProcess(process, &exitCode);
if (status == PR_FAILURE) {
fprintf(stderr,
"PR_WaitProcess failed\n" );
exit (
1 );
}
if (exitCode ==
0 ) {
printf(
"PASS\n" );
return 0 ;
}
else {
printf(
"FAIL\n" );
return 1 ;
}
}
Messung V0.5 in Prozent C=91 H=81 G=85
¤ Dauer der Verarbeitung: 0.10 Sekunden
(vorverarbeitet am 2026-06-07)
¤
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