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 18 int64_t replay_save_clock(ReplayClockKind kind, int64_t clock, int64_t raw_icount) 19 { 20 if (replay_file) { 21 g_assert(replay_mutex_locked()); 22 23 /* Due to the caller's locking requirements we get the icount from it 24 * instead of using replay_save_instructions(). 25 */ 26 replay_advance_current_step(raw_icount); 27 replay_put_event(EVENT_CLOCK + kind); 28 replay_put_qword(clock); 29 } 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 g_assert(replay_file && replay_mutex_locked()); 52 53 replay_account_executed_instructions(); 54 55 if (replay_file) { 56 int64_t ret; 57 if (replay_next_event_is(EVENT_CLOCK + kind)) { 58 replay_read_next_clock(kind); 59 } 60 ret = replay_state.cached_clock[kind]; 61 62 return ret; 63 } 64 65 error_report("REPLAY INTERNAL ERROR %d", __LINE__); 66 exit(1); 67 } 68