+++ /dev/null
-#ifndef _URCU_ARCH_GENERIC_H
-#define _URCU_ARCH_GENERIC_H
-
-/*
- * arch_generic.h: common definitions for multiple architectures.
- *
- * Copyright (c) 2010 Paolo Bonzini <pbonzini@redhat.com>
- *
- * 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 <urcu/compiler.h>
-#include <urcu/config.h>
-#include <urcu/syscall-compat.h>
-
-#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 <time.h>
-#include <stdint.h>
-
-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 <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
-
-#endif /* _URCU_ARCH_GENERIC_H */
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