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-rw-r--r--lib/isc/pthreads/condition.c74
1 files changed, 74 insertions, 0 deletions
diff --git a/lib/isc/pthreads/condition.c b/lib/isc/pthreads/condition.c
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+++ b/lib/isc/pthreads/condition.c
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+/*
+ * Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 1998-2001 Internet Software Consortium.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: condition.c,v 1.36 2007/06/19 23:47:18 tbox Exp $ */
+
+/*! \file */
+
+#include <config.h>
+
+#include <errno.h>
+
+#include <isc/condition.h>
+#include <isc/msgs.h>
+#include <isc/strerror.h>
+#include <isc/string.h>
+#include <isc/time.h>
+#include <isc/util.h>
+
+isc_result_t
+isc_condition_waituntil(isc_condition_t *c, isc_mutex_t *m, isc_time_t *t) {
+ int presult;
+ isc_result_t result;
+ struct timespec ts;
+ char strbuf[ISC_STRERRORSIZE];
+
+ REQUIRE(c != NULL && m != NULL && t != NULL);
+
+ /*
+ * POSIX defines a timespec's tv_sec as time_t.
+ */
+ result = isc_time_secondsastimet(t, &ts.tv_sec);
+ if (result != ISC_R_SUCCESS)
+ return (result);
+
+ /*!
+ * POSIX defines a timespec's tv_nsec as long. isc_time_nanoseconds
+ * ensures its return value is < 1 billion, which will fit in a long.
+ */
+ ts.tv_nsec = (long)isc_time_nanoseconds(t);
+
+ do {
+#if ISC_MUTEX_PROFILE
+ presult = pthread_cond_timedwait(c, &m->mutex, &ts);
+#else
+ presult = pthread_cond_timedwait(c, m, &ts);
+#endif
+ if (presult == 0)
+ return (ISC_R_SUCCESS);
+ if (presult == ETIMEDOUT)
+ return (ISC_R_TIMEDOUT);
+ } while (presult == EINTR);
+
+ isc__strerror(presult, strbuf, sizeof(strbuf));
+ UNEXPECTED_ERROR(__FILE__, __LINE__,
+ "pthread_cond_timedwait() %s %s",
+ isc_msgcat_get(isc_msgcat, ISC_MSGSET_GENERAL,
+ ISC_MSG_RETURNED, "returned"),
+ strbuf);
+ return (ISC_R_UNEXPECTED);
+}