1 files changed, 50 insertions, 0 deletions
diff --git a/bsd/freebsd/contrib/ntp/lib/isc/pthreads/include/isc/once.h b/bsd/freebsd/contrib/ntp/lib/isc/pthreads/include/isc/once.h
new file mode 100644
index 0000000..31d76fb
--- /dev/null
+++ b/bsd/freebsd/contrib/ntp/lib/isc/pthreads/include/isc/once.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
+ * Copyright (C) 1999-2001  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: once.h,v 1.13 2007/06/19 23:47:18 tbox Exp $ */
+
+#ifndef ISC_ONCE_H
+#define ISC_ONCE_H 1
+
+/*! \file */
+
+#include <pthread.h>
+
+#include <isc/platform.h>
+#include <isc/result.h>
+
+typedef pthread_once_t isc_once_t;
+
+#ifdef ISC_PLATFORM_BRACEPTHREADONCEINIT
+/*!
+ * This accomodates systems that define PTHRAD_ONCE_INIT improperly.
+ */
+#define ISC_ONCE_INIT { PTHREAD_ONCE_INIT }
+#else
+/*!
+ * This is the usual case.
+ */
+#define ISC_ONCE_INIT PTHREAD_ONCE_INIT
+#endif
+
+/* XXX We could do fancier error handling... */
+
+#define isc_once_do(op, f) \
+	((pthread_once((op), (f)) == 0) ? \
+	 ISC_R_SUCCESS : ISC_R_UNEXPECTED)
+
+#endif /* ISC_ONCE_H */