X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=include%2Furcu%2Ffutex.h;h=5e1db47af709026a6a4a25f5e1bbedfd6e58d0e0;hb=HEAD;hp=c206c6fce0d373c4a6dcffbdb7df4e5b37144194;hpb=6a29bfc1b6d5d57c4dbd8811a5229cf993e5fa65;p=urcu.git

diff --git a/include/urcu/futex.h b/include/urcu/futex.h
index c206c6f..9d0a997 100644
--- a/include/urcu/futex.h
+++ b/include/urcu/futex.h
@@ -1,32 +1,38 @@
+// SPDX-FileCopyrightText: 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+//
+// SPDX-License-Identifier: LGPL-2.1-or-later
+
 #ifndef _URCU_FUTEX_H
 #define _URCU_FUTEX_H
 
 /*
- * urcu-futex.h
- *
  * Userspace RCU - sys_futex/compat_futex header.
- *
- * Copyright 2011-2012 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #include <urcu/config.h>
+#include <urcu/syscall-compat.h>
+
+#include <errno.h>
 #include <stdint.h>
 #include <time.h>
 
+#if (defined(__linux__) && defined(__NR_futex))
+
+/* For backwards compat */
+#define CONFIG_RCU_HAVE_FUTEX 1
+
+#include <unistd.h>
+#include <errno.h>
+#include <urcu/compiler.h>
+#include <urcu/arch.h>
+
+#elif defined(__FreeBSD__)
+
+#include <sys/types.h>
+#include <sys/umtx.h>
+
+#endif
+
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -53,12 +59,7 @@ extern int compat_futex_noasync(int32_t *uaddr, int op, int32_t val,
 extern int compat_futex_async(int32_t *uaddr, int op, int32_t val,
 		const struct timespec *timeout, int32_t *uaddr2, int32_t val3);
 
-#ifdef CONFIG_RCU_HAVE_FUTEX
-
-#include <unistd.h>
-#include <errno.h>
-#include <urcu/compiler.h>
-#include <urcu/arch.h>
+#if (defined(__linux__) && defined(__NR_futex))
 
 static inline int futex(int32_t *uaddr, int op, int32_t val,
 		const struct timespec *timeout, int32_t *uaddr2, int32_t val3)
@@ -103,6 +104,48 @@ static inline int futex_async(int32_t *uaddr, int op, int32_t val,
 	return ret;
 }
 
+#elif defined(__FreeBSD__)
+
+static inline int futex_async(int32_t *uaddr, int op, int32_t val,
+		const struct timespec *timeout,
+		int32_t *uaddr2 __attribute__((unused)),
+		int32_t val3 __attribute__((unused)))
+{
+	int umtx_op;
+	void *umtx_uaddr = NULL, *umtx_uaddr2 = NULL;
+	struct _umtx_time umtx_timeout = {
+		._flags = UMTX_ABSTIME,
+		._clockid = CLOCK_MONOTONIC,
+	};
+
+	switch (op) {
+	case FUTEX_WAIT:
+		/* On FreeBSD, a "u_int" is a 32-bit integer. */
+		umtx_op = UMTX_OP_WAIT_UINT;
+		if (timeout != NULL) {
+			umtx_timeout._timeout = *timeout;
+			umtx_uaddr = (void *) sizeof(umtx_timeout);
+			umtx_uaddr2 = (void *) &umtx_timeout;
+		}
+		break;
+	case FUTEX_WAKE:
+		umtx_op = UMTX_OP_WAKE;
+		break;
+	default:
+		errno = EINVAL;
+		return -1;
+	}
+
+	return _umtx_op(uaddr, umtx_op, (uint32_t) val, umtx_uaddr,
+			umtx_uaddr2);
+}
+
+static inline int futex_noasync(int32_t *uaddr, int op, int32_t val,
+		const struct timespec *timeout, int32_t *uaddr2, int32_t val3)
+{
+	return futex_async(uaddr, op, val, timeout, uaddr2, val3);
+}
+
 #elif defined(__CYGWIN__)
 
 /*