bool replay_checkpoint(ReplayCheckpoint checkpoint)
{
bool res = false;
assert(EVENT_CHECKPOINT + checkpoint <= EVENT_CHECKPOINT_LAST);
replay_save_instructions();
if (!replay_file) {
return true;
}
replay_mutex_lock();
if (replay_mode == REPLAY_MODE_PLAY) {
if (replay_next_event_is(EVENT_CHECKPOINT + checkpoint)) {
replay_finish_event();
} else if (replay_state.data_kind != EVENT_ASYNC) {
res = false;
goto out;
}
replay_read_events(checkpoint);
/* replay_read_events may leave some unread events.
Return false if not all of the events associated with
checkpoint were processed */
res = replay_state.data_kind != EVENT_ASYNC;
} else if (replay_mode == REPLAY_MODE_RECORD) {
replay_put_event(EVENT_CHECKPOINT + checkpoint);
replay_save_events(checkpoint);
res = true;
}
out:
replay_mutex_unlock();
return res;
}
void replay_finish(void)
{
if (replay_mode == REPLAY_MODE_NONE) {
return;
}
replay_save_instructions();
/* finalize the file */
if (replay_file) {
if (replay_mode == REPLAY_MODE_RECORD) {
/* write end event */
replay_put_event(EVENT_END);
/* write header */
fseek(replay_file, 0, SEEK_SET);
replay_put_dword(REPLAY_VERSION);
}
fclose(replay_file);
replay_file = NULL;
}
if (replay_filename) {
g_free(replay_filename);
replay_filename = NULL;
}
replay_finish_events();
replay_mutex_destroy();
}
void replay_shutdown_request(ShutdownCause cause)
{
if (replay_mode == REPLAY_MODE_RECORD) {
g_assert(replay_mutex_locked());
replay_put_event(EVENT_SHUTDOWN + cause);
}
}
void replay_char_read_all_save_buf(uint8_t *buf, int offset)
{
replay_save_instructions();
replay_mutex_lock();
replay_put_event(EVENT_CHAR_READ_ALL);
replay_put_array(buf, offset);
replay_mutex_unlock();
}
void replay_shutdown_request(void)
{
if (replay_mode == REPLAY_MODE_RECORD) {
replay_mutex_lock();
replay_put_event(EVENT_SHUTDOWN);
replay_mutex_unlock();
}
}
void replay_char_read_all_save_error(int res)
{
assert(res < 0);
replay_save_instructions();
replay_mutex_lock();
replay_put_event(EVENT_CHAR_READ_ALL_ERROR);
replay_put_dword(res);
replay_mutex_unlock();
}
void replay_char_write_event_save(int res, int offset)
{
replay_save_instructions();
replay_mutex_lock();
replay_put_event(EVENT_CHAR_WRITE);
replay_put_dword(res);
replay_put_dword(offset);
replay_mutex_unlock();
}
bool replay_checkpoint(ReplayCheckpoint checkpoint)
{
bool res = false;
static bool in_checkpoint;
assert(EVENT_CHECKPOINT + checkpoint <= EVENT_CHECKPOINT_LAST);
if (!replay_file) {
return true;
}
if (in_checkpoint) {
/* If we are already in checkpoint, then there is no need
for additional synchronization.
Recursion occurs when HW event modifies timers.
Timer modification may invoke the checkpoint and
proceed to recursion. */
return true;
}
in_checkpoint = true;
replay_save_instructions();
if (replay_mode == REPLAY_MODE_PLAY) {
g_assert(replay_mutex_locked());
if (replay_next_event_is(EVENT_CHECKPOINT + checkpoint)) {
replay_finish_event();
} else if (replay_state.data_kind != EVENT_ASYNC) {
res = false;
goto out;
}
replay_read_events(checkpoint);
/* replay_read_events may leave some unread events.
Return false if not all of the events associated with
checkpoint were processed */
res = replay_state.data_kind != EVENT_ASYNC;
} else if (replay_mode == REPLAY_MODE_RECORD) {
g_assert(replay_mutex_locked());
replay_put_event(EVENT_CHECKPOINT + checkpoint);
/* This checkpoint belongs to several threads.
Processing events from different threads is
non-deterministic */
if (checkpoint != CHECKPOINT_CLOCK_WARP_START
/* FIXME: this is temporary fix, other checkpoints
may also be invoked from the different threads someday.
Asynchronous event processing should be refactored
to create additional replay event kind which is
nailed to the one of the threads and which processes
the event queue. */
&& checkpoint != CHECKPOINT_CLOCK_VIRTUAL) {
replay_save_events(checkpoint);
}
res = true;
}
out:
in_checkpoint = false;
return res;
}
bool replay_interrupt(void)
{
if (replay_mode == REPLAY_MODE_RECORD) {
g_assert(replay_mutex_locked());
replay_save_instructions();
replay_put_event(EVENT_INTERRUPT);
return true;
} else if (replay_mode == REPLAY_MODE_PLAY) {
g_assert(replay_mutex_locked());
bool res = replay_has_interrupt();
if (res) {
replay_finish_event();
}
return res;
}
return true;
}
bool replay_exception(void)
{
if (replay_mode == REPLAY_MODE_RECORD) {
g_assert(replay_mutex_locked());
replay_save_instructions();
replay_put_event(EVENT_EXCEPTION);
return true;
} else if (replay_mode == REPLAY_MODE_PLAY) {
g_assert(replay_mutex_locked());
bool res = replay_has_exception();
if (res) {
replay_finish_event();
}
return res;
}
return true;
}
