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