| /* |
| * Copyright (c) 2002, Intel Corporation. All rights reserved. |
| * Copyright (c) 2008, Novell Inc. All rights reserved. |
| * |
| * Created by: julie.n.fleischer REMOVE-THIS AT intel DOT com |
| * Major fixes by: Brandon Philips <bphilips@suse.de> |
| * |
| * This file is licensed under the GPL license. For the full content |
| * of this license, see the COPYING file at the top level of this |
| * source tree. |
| */ |
| |
| /* |
| * Test that if the message queue is full and O_NONBLOCK is not set, mq_send() |
| * will block until it can place the message in the queue. |
| * |
| * Test by sending messages in a child process until the message queue is full. |
| * At this point, the child should be blocking on sending. Then, have the |
| * parent receive the message and return pass when the next message is sent |
| * to the message queue. |
| * |
| * 3/13/03 - Added fix from Gregoire Pichon for specifying an attr |
| * with a mq_maxmsg >= BUFFER. |
| * |
| */ |
| |
| #include <stdio.h> |
| #include <mqueue.h> |
| #include <fcntl.h> |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #include <sys/wait.h> |
| #include <unistd.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include <stdint.h> |
| #include <signal.h> |
| #include <errno.h> |
| #include "posixtest.h" |
| #include "mq_send.h" |
| |
| #define NAMESIZE 50 |
| #define MSGSTR "0123456789" |
| #define BUFFER 40 |
| #define MAXMSG 5 |
| |
| char gqname[NAMESIZE]; |
| mqd_t gqueue; |
| |
| int sync_pipes[2]; |
| |
| int cleanup_for_exit(int gqueue, char *gqname, int ret) |
| { |
| mq_close(gqueue); |
| mq_unlink(gqname); |
| |
| if (ret == PTS_PASS) |
| printf("Test PASSED\n"); |
| else if (ret == PTS_FAIL) |
| printf("Test FAILED\n"); |
| |
| return ret; |
| } |
| |
| int main() |
| { |
| int pid; |
| char msgrcd[BUFFER]; |
| const char *msgptr = MSGSTR; |
| struct mq_attr attr; |
| int unresolved=0; |
| unsigned pri; |
| |
| sprintf(gqname, "/mq_send_5-1_%d", getpid()); |
| |
| attr.mq_msgsize = BUFFER; |
| attr.mq_maxmsg = MAXMSG; |
| |
| /* Use O_CREAT + O_EXCL to avoid using a previously created queue */ |
| gqueue = mq_open(gqname, O_CREAT | O_RDWR | O_EXCL, S_IRUSR | S_IWUSR, &attr); |
| if (gqueue == (mqd_t)-1) { |
| perror("mq_open() did not return success"); |
| return PTS_UNRESOLVED; |
| } |
| |
| if (sync_pipe_create(sync_pipes) == -1) { |
| perror("sync_pipe_create() did not return success"); |
| return cleanup_for_exit(gqueue, gqname, PTS_UNRESOLVED); |
| } |
| |
| if ((pid = fork()) == 0) { |
| /* child here */ |
| int i; |
| |
| for (i=0; i<MAXMSG+1; i++) { |
| mq_send(gqueue, msgptr, strlen(msgptr), 1); |
| |
| if (sync_pipe_notify(sync_pipes) < 0) { |
| perror("sync_pipe_notify() did not return success"); |
| return cleanup_for_exit(gqueue, gqname, PTS_UNRESOLVED); |
| } |
| } |
| } else { |
| /* parent here */ |
| int j; |
| |
| /* wait for child to reach MAXMSG */ |
| for (j = 0; j < MAXMSG; j++) { |
| /* set a long timeout since we are expecting success */ |
| if (sync_pipe_wait_select(sync_pipes, 60) != 0) { |
| printf("sync_pipe_wait\n"); |
| return cleanup_for_exit(gqueue, gqname, PTS_FAIL); |
| } |
| } |
| |
| /* if we don't timeout here then we got too many messages, child never blocked */ |
| if (sync_pipe_wait_select(sync_pipes, 1) != -ETIMEDOUT) { |
| printf("Child never blocked\n"); |
| kill(pid, SIGKILL); //kill child |
| return cleanup_for_exit(gqueue, gqname, PTS_FAIL); |
| } |
| |
| /* receive one message and allow child's mq_send to complete */ |
| if (mq_receive(gqueue, msgrcd, BUFFER, &pri) == -1) { |
| perror("mq_receive() did not return success"); |
| unresolved = 1; |
| } |
| |
| /* child has 5 seconds to call mq_send() again and notify us */ |
| if (sync_pipe_wait_select(sync_pipes, 5) == -ETIMEDOUT) { |
| /* |
| * mq_send didn't unblock |
| */ |
| kill(pid, SIGKILL); //kill child |
| printf("mq_send() didn't appear to complete\n"); |
| return cleanup_for_exit(gqueue, gqname, PTS_FAIL); |
| } |
| |
| return cleanup_for_exit(gqueue, gqname, PTS_PASS); |
| } |
| |
| return PTS_UNRESOLVED; |
| } |