X-Git-Url: https://git.lttng.org/?p=urcu.git;a=blobdiff_plain;f=urcu%2Farch%2Fgeneric.h;h=4b56ed7aaff00788a5fb4fbce712a146c5198a5d;hp=3f7521ebdd820261b7b2b43b328692a6186319f7;hb=a0307b90e502a48cc73ca936bce0792f5566ba64;hpb=999991c6e4600c410181baea65bda9f406464872 diff --git a/urcu/arch/generic.h b/urcu/arch/generic.h index 3f7521e..4b56ed7 100644 --- a/urcu/arch/generic.h +++ b/urcu/arch/generic.h @@ -62,7 +62,7 @@ extern "C" { /* * Architectures without cache coherency need something like the following: * - * #define cmm_mc() arch_cache_flush() + * #define cmm_mc() arch_cache_flush() * #define cmm_rmc() arch_cache_flush_read() * #define cmm_wmc() arch_cache_flush_write() * @@ -150,6 +150,58 @@ extern "C" { #define caa_cpu_relax() cmm_barrier() #endif +#ifndef HAS_CAA_GET_CYCLES +#define HAS_CAA_GET_CYCLES + +#ifdef CONFIG_RCU_HAVE_CLOCK_GETTIME + +#include +#include + +typedef uint64_t caa_cycles_t; + +static inline caa_cycles_t caa_get_cycles (void) +{ + struct timespec ts; + + if (caa_unlikely(clock_gettime(CLOCK_MONOTONIC, &ts))) + return -1ULL; + return ((uint64_t) ts.tv_sec * 1000000000ULL) + ts.tv_nsec; +} + +#elif defined(__APPLE__) + +#include +#include +#include +#include +#include + +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