80 lines
2.4 KiB
C
80 lines
2.4 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 <stdlib.h>
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#include <errno.h>
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#include <sys/mman.h>
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#include "asyncmsg_priv.h"
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int asyncmsg_connect_detach(int coid)
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{
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struct _asyncmsg_connect_context *acc;
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struct _asyncmsg_connection_descriptor *acd;
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struct _asyncmsg_put_header *aph;
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if (ConnectDetach(coid) == -1)
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return -1;
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if ((acc = _asyncmsg_handle(coid, _ASYNCMSG_HANDLE_DELETE, 0)) == NULL)
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return -1;
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timer_delete(acc->acd.ttimer);
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/* if there is still message in the queue, remove them. The q is like:
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*
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* (free slot we know) --- (kernel point here) --- (lib point here)
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* free head tail
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*
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* free to head are already processed by kernel,
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* head to tail are messages already aysncmsg_put() but not processed,
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* tail to free are free slot for further asyncmsg_put().
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*/
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acd = &acc->acd;
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_mutex_lock(&acd->mu);
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while (acd->sendq_free != acd->sendq_tail) {
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aph = &acd->sendq[acd->sendq_free];
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/* cast to int to protect wrap over */
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if ((int)(acd->sendq_free - acd->sendq_head) >= 0) {
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aph->err = EBADF;
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}
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if (aph->cb) {
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aph->cb(aph->err, aph->iov, aph->handle);
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} else if (acd->attr.call_back) {
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acd->attr.call_back(aph->err, aph->iov, aph->handle);
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}
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if (++acd->sendq_free >= acd->sendq_size)
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acd->sendq_free = 0;
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}
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/* Sigh! have to use broadcast cause the condvar both
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* use for queue full, and asyncmsg_flush()
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*/
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pthread_cond_broadcast(&acd->block_con);
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_mutex_unlock(&acd->mu);
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pthread_cond_destroy(&acc->acd.block_con);
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pthread_mutex_destroy(&acc->acd.mu);
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munmap(acc, sizeof(*acc));
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return 0;
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}
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__SRCVERSION("asyncmsg_connect_detach.c $Rev: 153052 $");
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