X-Git-Url: https://git.liburcu.org/?p=urcu.git;a=blobdiff_plain;f=urcu%2Farch%2Fgeneric.h;fp=urcu%2Farch%2Fgeneric.h;h=0000000000000000000000000000000000000000;hp=4b56ed7aaff00788a5fb4fbce712a146c5198a5d;hb=6893800a4d1cc14dff0395ddcd660a5138db183d;hpb=a59f39055b5ecb77b68cf78b9839aa9e8e4ec332 diff --git a/urcu/arch/generic.h b/urcu/arch/generic.h deleted file mode 100644 index 4b56ed7..0000000 --- a/urcu/arch/generic.h +++ /dev/null @@ -1,209 +0,0 @@ -#ifndef _URCU_ARCH_GENERIC_H -#define _URCU_ARCH_GENERIC_H - -/* - * arch_generic.h: common definitions for multiple architectures. - * - * Copyright (c) 2010 Paolo Bonzini - * - * 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 -#include -#include - -#ifdef __cplusplus -extern "C" { -#endif - -#ifndef CAA_CACHE_LINE_SIZE -#define CAA_CACHE_LINE_SIZE 64 -#endif - -#if !defined(cmm_mc) && !defined(cmm_rmc) && !defined(cmm_wmc) -#define CONFIG_HAVE_MEM_COHERENCY -/* - * Architectures with cache coherency must _not_ define cmm_mc/cmm_rmc/cmm_wmc. - * - * For them, cmm_mc/cmm_rmc/cmm_wmc are implemented with a simple - * compiler barrier; in addition, we provide defaults for cmm_mb (using - * GCC builtins) as well as cmm_rmb and cmm_wmb (defaulting to cmm_mb). - */ - -#ifndef cmm_mb -#define cmm_mb() __sync_synchronize() -#endif - -#ifndef cmm_rmb -#define cmm_rmb() cmm_mb() -#endif - -#ifndef cmm_wmb -#define cmm_wmb() cmm_mb() -#endif - -#define cmm_mc() cmm_barrier() -#define cmm_rmc() cmm_barrier() -#define cmm_wmc() cmm_barrier() -#else -/* - * Architectures without cache coherency need something like the following: - * - * #define cmm_mc() arch_cache_flush() - * #define cmm_rmc() arch_cache_flush_read() - * #define cmm_wmc() arch_cache_flush_write() - * - * Of these, only cmm_mc is mandatory. cmm_rmc and cmm_wmc default to - * cmm_mc. cmm_mb/cmm_rmb/cmm_wmb use these definitions by default: - * - * #define cmm_mb() cmm_mc() - * #define cmm_rmb() cmm_rmc() - * #define cmm_wmb() cmm_wmc() - */ - -#ifndef cmm_mb -#define cmm_mb() cmm_mc() -#endif - -#ifndef cmm_rmb -#define cmm_rmb() cmm_rmc() -#endif - -#ifndef cmm_wmb -#define cmm_wmb() cmm_wmc() -#endif - -#ifndef cmm_rmc -#define cmm_rmc() cmm_mc() -#endif - -#ifndef cmm_wmc -#define cmm_wmc() cmm_mc() -#endif -#endif - -/* Nop everywhere except on alpha. */ -#ifndef cmm_read_barrier_depends -#define cmm_read_barrier_depends() -#endif - -#ifdef CONFIG_RCU_SMP -#ifndef cmm_smp_mb -#define cmm_smp_mb() cmm_mb() -#endif -#ifndef cmm_smp_rmb -#define cmm_smp_rmb() cmm_rmb() -#endif -#ifndef cmm_smp_wmb -#define cmm_smp_wmb() cmm_wmb() -#endif -#ifndef cmm_smp_mc -#define cmm_smp_mc() cmm_mc() -#endif -#ifndef cmm_smp_rmc -#define cmm_smp_rmc() cmm_rmc() -#endif -#ifndef cmm_smp_wmc -#define cmm_smp_wmc() cmm_wmc() -#endif -#ifndef cmm_smp_read_barrier_depends -#define cmm_smp_read_barrier_depends() cmm_read_barrier_depends() -#endif -#else -#ifndef cmm_smp_mb -#define cmm_smp_mb() cmm_barrier() -#endif -#ifndef cmm_smp_rmb -#define cmm_smp_rmb() cmm_barrier() -#endif -#ifndef cmm_smp_wmb -#define cmm_smp_wmb() cmm_barrier() -#endif -#ifndef cmm_smp_mc -#define cmm_smp_mc() cmm_barrier() -#endif -#ifndef cmm_smp_rmc -#define cmm_smp_rmc() cmm_barrier() -#endif -#ifndef cmm_smp_wmc -#define cmm_smp_wmc() cmm_barrier() -#endif -#ifndef cmm_smp_read_barrier_depends -#define cmm_smp_read_barrier_depends() -#endif -#endif - -#ifndef caa_cpu_relax -#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 - -#endif /* _URCU_ARCH_GENERIC_H */