| 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 "system/replay.h" |
| 14 | #include "replay-internal.h" |
| 15 | #include "qemu/error-report.h" |
| 16 | |
| 17 | int64_t replay_save_clock(ReplayClockKind kind, int64_t clock, |
| 18 | int64_t raw_icount) |
| 19 | { |
| 20 | g_assert(replay_file); |
| 21 | g_assert(replay_mutex_locked()); |
| 22 | |
| 23 | /* |
| 24 | * Due to the caller's locking requirements we get the icount from it |
| 25 | * instead of using replay_save_instructions(). |
| 26 | */ |
| 27 | replay_advance_current_icount(raw_icount); |
| 28 | replay_put_event(EVENT_CLOCK + kind); |
| 29 | replay_put_qword(clock); |
| 30 | |
| 31 | return clock; |
| 32 | } |
| 33 | |
| 34 | void replay_read_next_clock(ReplayClockKind kind) |
| 35 | { |
| 36 | unsigned int read_kind = replay_state.data_kind - EVENT_CLOCK; |
| 37 | |
| 38 | assert(read_kind == kind); |
| 39 | |
| 40 | int64_t clock = replay_get_qword(); |
| 41 | |
| 42 | replay_check_error(); |
| 43 | replay_finish_event(); |
| 44 | |
| 45 | replay_state.cached_clock[read_kind] = clock; |
| 46 | } |
| 47 | |
| 48 | /*! Reads next clock event from the input. */ |
| 49 | int64_t replay_read_clock(ReplayClockKind kind, int64_t raw_icount) |
| 50 | { |
| 51 | g_assert(replay_file && replay_mutex_locked()); |
| 52 | |
| 53 | replay_advance_current_icount(raw_icount); |
| 54 | |
| 55 | if (replay_next_event_is(EVENT_CLOCK + kind)) { |
| 56 | replay_read_next_clock(kind); |
| 57 | } |
| 58 | return replay_state.cached_clock[kind]; |
| 59 | } |