LXR qemu/replay/replay-time.c

   1/*
   2 * replay-time.c
   3 *
   4 * Copyright (c) 2010-2015 Institute for System Programming
   5 *                         of the Russian Academy of Sciences.
   6 *
   7 * This work is licensed under the terms of the GNU GPL, version 2 or later.
   8 * See the COPYING file in the top-level directory.
   9 *
  10 */
  11
  12#include "qemu-common.h"
  13#include "sysemu/replay.h"
  14#include "replay-internal.h"
  15#include "qemu/error-report.h"
  16
  17int64_t replay_save_clock(ReplayClockKind kind, int64_t clock)
  18{
  19    replay_save_instructions();
  20
  21    if (replay_file) {
  22        replay_mutex_lock();
  23        replay_put_event(EVENT_CLOCK + kind);
  24        replay_put_qword(clock);
  25        replay_mutex_unlock();
  26    }
  27
  28    return clock;
  29}
  30
  31void replay_read_next_clock(ReplayClockKind kind)
  32{
  33    unsigned int read_kind = replay_data_kind - EVENT_CLOCK;
  34
  35    assert(read_kind == kind);
  36
  37    int64_t clock = replay_get_qword();
  38
  39    replay_check_error();
  40    replay_finish_event();
  41
  42    replay_state.cached_clock[read_kind] = clock;
  43}
  44
  45/*! Reads next clock event from the input. */
  46int64_t replay_read_clock(ReplayClockKind kind)
  47{
  48    replay_account_executed_instructions();
  49
  50    if (replay_file) {
  51        int64_t ret;
  52        replay_mutex_lock();
  53        if (replay_next_event_is(EVENT_CLOCK + kind)) {
  54            replay_read_next_clock(kind);
  55        }
  56        ret = replay_state.cached_clock[kind];
  57        replay_mutex_unlock();
  58
  59        return ret;
  60    }
  61
  62    error_report("REPLAY INTERNAL ERROR %d", __LINE__);
  63    exit(1);
  64}
  65