1 files changed, 74 insertions, 0 deletions
diff --git a/lib/isc/pthreads/condition.c b/lib/isc/pthreads/condition.c
new file mode 100644
index 0000000..a7f1928
--- /dev/null
+++ b/lib/isc/pthreads/condition.c
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+
+/*! \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 we have a range error ts.tv_sec is most probably a signed
+	 * 32 bit value.  Set ts.tv_sec to INT_MAX.  This is a kludge.
+	 */
+	if (result == ISC_R_RANGE)
+		ts.tv_sec = INT_MAX;
+	else 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);
+}