Fix: use clock_get_time for caa_get_cycles fallback on MacOSX
[urcu.git] / urcu / arch / generic.h
index d42359557ef9147eafed2f2f077954e4246138ed..4b56ed7aaff00788a5fb4fbce712a146c5198a5d 100644 (file)
@@ -153,6 +153,8 @@ extern "C" {
 #ifndef HAS_CAA_GET_CYCLES
 #define HAS_CAA_GET_CYCLES
 
 #ifndef HAS_CAA_GET_CYCLES
 #define HAS_CAA_GET_CYCLES
 
+#ifdef CONFIG_RCU_HAVE_CLOCK_GETTIME
+
 #include <time.h>
 #include <stdint.h>
 
 #include <time.h>
 #include <stdint.h>
 
@@ -166,6 +168,38 @@ static inline caa_cycles_t caa_get_cycles (void)
                return -1ULL;
        return ((uint64_t) ts.tv_sec * 1000000000ULL) + ts.tv_nsec;
 }
                return -1ULL;
        return ((uint64_t) ts.tv_sec * 1000000000ULL) + ts.tv_nsec;
 }
+
+#elif defined(__APPLE__)
+
+#include <mach/mach.h>
+#include <mach/clock.h>
+#include <mach/mach_time.h>
+#include <time.h>
+#include <stdint.h>
+
+typedef uint64_t caa_cycles_t;
+
+static inline caa_cycles_t caa_get_cycles (void)
+{
+       mach_timespec_t ts = { 0, 0 };
+       static clock_serv_t clock_service;
+
+       if (caa_unlikely(!clock_service)) {
+               if (host_get_clock_service(mach_host_self(),
+                               SYSTEM_CLOCK, &clock_service))
+                       return -1ULL;
+       }
+       if (caa_unlikely(clock_get_time(clock_service, &ts)))
+               return -1ULL;
+       return ((uint64_t) ts.tv_sec * 1000000000ULL) + ts.tv_nsec;
+}
+
+#else
+
+#error caa_get_cycles() not implemented for this platform.
+
+#endif
+
 #endif /* HAS_CAA_GET_CYCLES */
 
 #ifdef __cplusplus
 #endif /* HAS_CAA_GET_CYCLES */
 
 #ifdef __cplusplus
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