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/osdep.h"
  13#include "qemu-common.h"
  14#include "sysemu/replay.h"
  15#include "replay-internal.h"
  16#include "qemu/error-report.h"
  17
  18int64_t replay_save_clock(ReplayClockKind kind, int64_t clock)
  19{
  20    replay_save_instructions();
  21
  22    if (replay_file) {
  23        replay_mutex_lock();
  24        replay_put_event(EVENT_CLOCK + kind);
  25        replay_put_qword(clock);
  26        replay_mutex_unlock();
  27    }
  28
  29    return clock;
  30}
  31
  32void replay_read_next_clock(ReplayClockKind kind)
  33{
  34    unsigned int read_kind = replay_data_kind - EVENT_CLOCK;
  35
  36    assert(read_kind == kind);
  37
  38    int64_t clock = replay_get_qword();
  39
  40    replay_check_error();
  41    replay_finish_event();
  42
  43    replay_state.cached_clock[read_kind] = clock;
  44}
  45
  46/*! Reads next clock event from the input. */
  47int64_t replay_read_clock(ReplayClockKind kind)
  48{
  49    replay_account_executed_instructions();
  50
  51    if (replay_file) {
  52        int64_t ret;
  53        replay_mutex_lock();
  54        if (replay_next_event_is(EVENT_CLOCK + kind)) {
  55            replay_read_next_clock(kind);
  56        }
  57        ret = replay_state.cached_clock[kind];
  58        replay_mutex_unlock();
  59
  60        return ret;
  61    }
  62
  63    error_report("REPLAY INTERNAL ERROR %d", __LINE__);
  64    exit(1);
  65}
  66