fix: typo in futex syscall define check

[urcu.git] / include / urcu / futex.h

diff --git a/include/urcu/futex.h b/include/urcu/futex.h
index c206c6fce0d373c4a6dcffbdb7df4e5b37144194..5e1db47af709026a6a4a25f5e1bbedfd6e58d0e0 100644 (file)
--- a/include/urcu/futex.h
+++ b/include/urcu/futex.h
@@ -24,6 +24,9 @@
  */
 
 #include <urcu/config.h>
+#include <urcu/syscall-compat.h>
+
+#include <errno.h>
 #include <stdint.h>
 #include <time.h>
 
@@ -53,7 +56,10 @@ 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
+#if (defined(__linux__) && defined(__NR_futex))
+
+/* For backwards compat */
+#define CONFIG_RCU_HAVE_FUTEX 1
 
 #include <unistd.h>
 #include <errno.h>
@@ -103,6 +109,49 @@ static inline int futex_async(int32_t *uaddr, int op, int32_t val,
        return ret;
 }
 
+#elif defined(__FreeBSD__)
+
+#include <sys/types.h>
+#include <sys/umtx.h>
+
+static inline int futex_async(int32_t *uaddr, int op, int32_t val,
+               const struct timespec *timeout, int32_t *uaddr2, int32_t val3)
+{
+       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__)
 
 /*