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, 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 33 void 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. */ 48 int64_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