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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 | ||
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) | |
50 | { | |
51 | int64_t ret; | |
52 | g_assert(replay_file && replay_mutex_locked()); | |
53 | ||
54 | replay_account_executed_instructions(); | |
55 | ||
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 | } |