fix: warnings on non-Linux platforms
[urcu.git] / include / urcu / futex.h
index 753df622005f8d4103010e9f324827e8f97f2b62..753cf16d9e28d6c79639e915fd633175121c0315 100644 (file)
  */
 
 #include <urcu/config.h>
+#include <urcu/syscall-compat.h>
+
+#include <errno.h>
 #include <stdint.h>
+#include <time.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -52,7 +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>
@@ -102,6 +109,51 @@ 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 __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__)
 
 /*
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