128 lines
2.8 KiB
C
128 lines
2.8 KiB
C
/*
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* $QNXLicenseC:
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* Copyright 2007, QNX Software Systems. All Rights Reserved.
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*
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* You must obtain a written license from and pay applicable license fees to QNX
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* Software Systems before you may reproduce, modify or distribute this software,
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* or any work that includes all or part of this software. Free development
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* licenses are available for evaluation and non-commercial purposes. For more
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* information visit http://licensing.qnx.com or email licensing@qnx.com.
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*
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* This file may contain contributions from others. Please review this entire
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* file for other proprietary rights or license notices, as well as the QNX
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* Development Suite License Guide at http://licensing.qnx.com/license-guide/
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* for other information.
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* $
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*/
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#include <stdio.h>
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#include <errno.h>
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#include <process.h>
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#include <unistd.h>
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#include <sys/asyncmsg.h>
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char *msg = "AsyncMsg Passing";
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int chid = -1, coid;
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int getisready = 0;
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void *get_thread(void *arg)
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{
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struct _asyncmsg_get_header *agh, *agh1;
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/* async channel */
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if ((chid = asyncmsg_channel_create(_NTO_CHF_SENDER_LEN, 0666, 2048, 5, NULL, NULL)) == -1) {
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perror("channel_create");
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return -1;
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}
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if ((agh = asyncmsg_get(chid)) == NULL) {
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perror("get");
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return NULL;
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}
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printf("Got message(s): \n\n");
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while (agh1 = agh) {
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agh = agh1->next;
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printf("from process: %d (%d)\n", agh1->info.pid, getpid());
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printf("msglen: %d (%d)\n", agh1->info.msglen, strlen(msg) + 1);
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printf("srclen: %d\n", agh1->info.srcmsglen);
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printf("err: %d\n", agh1->err);
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printf("parts: %d\n", agh1->parts);
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printf("msg: %s\n\n", (char *)agh1->iov->iov_base);
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asyncmsg_free(agh1);
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}
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if (asyncmsg_channel_destroy(chid) == -1) {
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perror("channel_detach");
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return NULL;
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}
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return NULL;
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}
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/* The asyncmsg_get() will be blocked, and let's see if a put
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* could wake it up
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*/
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int main(int argc, char **argv)
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{
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struct _asyncmsg_connection_attr aca;
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int pid = 0;
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if (argc > 1) {
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if ((pid = fork()) == -1) {
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perror("fork");
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return -1;
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}
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if (!pid) {
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get_thread(0);
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return 0;
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} else {
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/* we lied, the parent don't know the chid in client,
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* we assume it's 1 :)
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*/
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chid = 1;
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}
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} else {
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if ((errno = pthread_create(0, 0, get_thread, NULL)) != EOK) {
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perror("pthread_create");
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return -1;
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}
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}
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/* Let the get thread block */
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sleep(1);
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if (chid == -1) {
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return -1;
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}
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memset(&aca, 0, sizeof(aca));
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aca.buffer_size = 2048;
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aca.max_num_buffer = 5;
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aca.trigger_num_msg = 1;
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if ((coid = asyncmsg_connect_attach(0, pid, chid, 0, 0, &aca)) == -1) {
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perror("connect_attach");
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return -1;
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}
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if ((asyncmsg_put(coid, msg, strlen(msg) + 1, 0, 0)) == -1) {
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perror("put");
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return -1;
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}
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sleep(1);
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if (asyncmsg_connect_detach(coid) == -1) {
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perror("connect_detach");
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return NULL;
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}
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return 0;
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}
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__SRCVERSION("block_get.c $Rev: 153052 $");
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