remove ceph code

[stor4nfv.git] / src / ceph / src / common / Cycles.h

diff --git a/src/ceph/src/common/Cycles.h b/src/ceph/src/common/Cycles.h
deleted file mode 100644 (file)
index bb47d5c..0000000
--- a/src/ceph/src/common/Cycles.h
+++ /dev/null
@@ -1,111 +0,0 @@
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- 
-// vim: ts=8 sw=2 smarttab
-/*
- * Ceph - scalable distributed file system
- *
- * Copyright (C) 2014 UnitedStack <haomai@unitedstack.com>
- *
- * Author: Haomai Wang <haomaiwang@gmail.com>
- *
- * This is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License version 2.1, as published by the Free Software
- * Foundation.  See file COPYING.
- *
- */
-/* Copyright (c) 2011-2014 Stanford University
- *
- * Permission to use, copy, modify, and distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR(S) DISCLAIM ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL AUTHORS BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-
-#ifndef CEPH_CYCLES_H
-#define CEPH_CYCLES_H
-
-/**
- * This class provides static methods that read the fine-grain CPU
- * cycle counter and translate between cycle-level times and absolute
- * times.
- */
-class Cycles {
- public:
-  static void init();
-
-  /**
-   * Return the current value of the fine-grain CPU cycle counter
-   * (accessed via the RDTSC instruction).
-   */
-  static __inline __attribute__((always_inline)) uint64_t rdtsc() {
-#if defined(__i386__)
-    int64_t ret;
-    __asm__ volatile ("rdtsc" : "=A" (ret) );
-    return ret;
-#elif defined(__x86_64__) || defined(__amd64__)
-    uint32_t lo, hi;
-    __asm__ __volatile__("rdtsc" : "=a" (lo), "=d" (hi));
-    return (((uint64_t)hi << 32) | lo);
-#elif defined(__aarch64__)
-    //
-    // arch/arm64/include/asm/arch_timer.h
-    //
-    // static inline u64 arch_counter_get_cntvct(void)
-    // {
-    //         u64 cval;
-    // 
-    //         isb();
-    //         asm volatile("mrs %0, cntvct_el0" : "=r" (cval));
-    // 
-    //         return cval;
-    // }
-    //
-    // https://github.com/cloudius-systems/osv/blob/master/arch/aarch64/arm-clock.cc
-    uint64_t cntvct;
-    asm volatile ("isb; mrs %0, cntvct_el0; isb; " : "=r" (cntvct) :: "memory");
-    return cntvct;
-#elif defined(__powerpc__) || defined (__powerpc64__)
-    // Based on:
-    // https://github.com/randombit/botan/blob/net.randombit.botan/src/lib/entropy/hres_timer/hres_timer.cpp
-    uint32_t lo = 0, hi = 0;
-    asm volatile("mftbu %0; mftb %1" : "=r" (hi), "=r" (lo));
-    return (((uint64_t)hi << 32) | lo);
-#else
-#warning No high-precision counter available for your OS/arch
-    return 0;
-#endif
-  }
-
-  static double per_second();
-  static double to_seconds(uint64_t cycles, double cycles_per_sec = 0);
-  static uint64_t from_seconds(double seconds, double cycles_per_sec = 0);
-  static uint64_t to_microseconds(uint64_t cycles, double cycles_per_sec = 0);
-  static uint64_t to_nanoseconds(uint64_t cycles, double cycles_per_sec = 0);
-  static uint64_t from_nanoseconds(uint64_t ns, double cycles_per_sec = 0);
-  static void sleep(uint64_t us);
-
-private:
-  Cycles();
-
-  /// Conversion factor between cycles and the seconds; computed by
-  /// Cycles::init.
-  static double cycles_per_sec;
-
-  /**
-   * Returns the conversion factor between cycles in seconds, using
-   * a mock value for testing when appropriate.
-   */
-  static __inline __attribute__((always_inline)) double get_cycles_per_sec() {
-    return cycles_per_sec;
-  }
-};
-
-#endif  // CEPH_CYCLES_H