[ Moving this back to [EMAIL PROTECTED] ] On Fri, Jul 20, 2001 at 05:28:42PM -0400, Jeff Trawick wrote: > > I'm seeing ret being equivalent to 20507 which looks to be > > APR_ETIMEUP. Oh dear, don't we need to check if the return > > value is APR_ETIMEUP? -- justin > > I sure didn't see that > > [Fri Jul 20 16:35:14 2001] [emerg] (11)Resource temporarily > unavailable: n 0 > > I think we shouldn't use socket read functions for > files^H^H^H^H^Hpipes (whatever) > > how can you get APR_ETIMEUP?
Oh, damn. My testpipe.c was setting a timeout. I'm donning a dunce hat. So, APR_TIMEUP is bogus on my part. But, I can still create count oddities *without* a timeout (i.e. ret is 0 and one is 0). So, the same problem is evident. I just don't receive APR_TIMEUP. My testpipe.c uses apr_file_read. You can have it do apr_recv if you define PIPE_AS_SOCKET. I agree, we should have threaded MPM do apr_file_read instead. I'm inlining a corrected version that has a 0 timeout. I'm still no closer as to finding out why I'm getting 0 ret and 0 length returned from apr_file_read or apr_recv. Neither side should have closed the pipe. I'm obviously missing something. -- justin --- /* ==================================================================== * The Apache Software License, Version 1.1 * * Copyright (c) 2000-2001 The Apache Software Foundation. All rights * reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. The end-user documentation included with the redistribution, * if any, must include the following acknowledgment: * "This product includes software developed by the * Apache Software Foundation (http://www.apache.org/)." * Alternately, this acknowledgment may appear in the software itself, * if and wherever such third-party acknowledgments normally appear. * * 4. The names "Apache" and "Apache Software Foundation" must * not be used to endorse or promote products derived from this * software without prior written permission. For written * permission, please contact [EMAIL PROTECTED] * * 5. Products derived from this software may not be called "Apache", * nor may "Apache" appear in their name, without prior written * permission of the Apache Software Foundation. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * ==================================================================== * * This software consists of voluntary contributions made by many * individuals on behalf of the Apache Software Foundation. For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. */ #include <stdio.h> #include "apr_file_io.h" #include "apr_errno.h" #include "apr_general.h" #include "apr_lib.h" #include "apr_network_io.h" #include <stdlib.h> #include <unistd.h> apr_file_t *readp = NULL; apr_file_t *writep = NULL; /*#define PIPE_AS_SOCKET*/ /*#define SOLARIS_HACK*/ /*#define PRINT_RET*/ void pipe_child() { char b = ' '; int one = 1; int i = 0; apr_status_t ret; #ifdef PIPE_AS_SOCKET apr_socket_t *s; apr_socket_from_file(&s, readp); #endif while (i < 1000) { #ifdef PIPE_AS_SOCKET ret = apr_recv(s, &b, &one); #else ret = apr_file_read(readp, &b, &one); #endif if (APR_STATUS_IS_EAGAIN(ret)) { /* It lost the lottery. It must continue to suffer * through a life of servitude. */ } else { #ifdef SOLARIS_HACK if (one == 1) printf("%c", b); #elif defined(PRINT_RET) if (one != 1) printf("%d %d\n", ret, one); #else printf("%c", b); #endif } i++; } } void pipe_parent() { char c = '!'; int one = 1; int i = 0; while (i < 1000) { apr_file_write(writep, &c, &one); i++; } } void go() { fflush(stdout); if (fork()) { fork(); fork(); fork(); fork(); fork(); fork(); pipe_child(); } else { pipe_parent(); } } int main(void) { apr_pool_t *context; apr_size_t nbytes; apr_status_t rv; char *buf; char msgbuf[120]; if (apr_initialize() != APR_SUCCESS) { exit(-1); } atexit(apr_terminate); if (apr_pool_create(&context, NULL) != APR_SUCCESS) { exit(-1); } if ((rv = apr_file_pipe_create(&readp, &writep, context)) != APR_SUCCESS) { exit(-1); } if ((rv = apr_file_pipe_timeout_set(readp, 0)) != APR_SUCCESS) { exit(-1); } go(); return 1; }
