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