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 "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, int64_t raw_icount)
  18{
  19    if (replay_file) {
  20        g_assert(replay_mutex_locked());
  21
  22        /* Due to the caller's locking requirements we get the icount from it
  23         * instead of using replay_save_instructions().
  24         */
  25        replay_advance_current_step(raw_icount);
  26        replay_put_event(EVENT_CLOCK + kind);
  27        replay_put_qword(clock);
  28    }
  29
  30    return clock;
  31}
  32
  33void replay_read_next_clock(ReplayClockKind kind)
  34{
  35    unsigned int read_kind = replay_state.data_kind - EVENT_CLOCK;
  36
  37    assert(read_kind == kind);
  38
  39    int64_t clock = replay_get_qword();
  40
  41    replay_check_error();
  42    replay_finish_event();
  43
  44    replay_state.cached_clock[read_kind] = clock;
  45}
  46
  47/*! Reads next clock event from the input. */
  48int64_t replay_read_clock(ReplayClockKind kind)
  49{
  50    g_assert(replay_file && replay_mutex_locked());
  51
  52    replay_account_executed_instructions();
  53
  54    if (replay_file) {
  55        int64_t ret;
  56        if (replay_next_event_is(EVENT_CLOCK + kind)) {
  57            replay_read_next_clock(kind);
  58        }
  59        ret = replay_state.cached_clock[kind];
  60
  61        return ret;
  62    }
  63
  64    error_report("REPLAY INTERNAL ERROR %d", __LINE__);
  65    exit(1);
  66}
  67