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Diffstat (limited to 'replay')
-rw-r--r--replay/replay-internal.c1
-rw-r--r--replay/replay-internal.h19
-rw-r--r--replay/replay-snapshot.c1
-rw-r--r--replay/replay.c111
4 files changed, 131 insertions, 1 deletions
diff --git a/replay/replay-internal.c b/replay/replay-internal.c
index 634025096e..654b99cfb5 100644
--- a/replay/replay-internal.c
+++ b/replay/replay-internal.c
@@ -175,6 +175,7 @@ void replay_fetch_data_kind(void)
if (replay_file) {
if (!replay_state.has_unread_data) {
replay_state.data_kind = replay_get_byte();
+ replay_state.current_event++;
if (replay_state.data_kind == EVENT_INSTRUCTION) {
replay_state.instruction_count = replay_get_dword();
}
diff --git a/replay/replay-internal.h b/replay/replay-internal.h
index 1bc8fd5086..75249b7693 100644
--- a/replay/replay-internal.h
+++ b/replay/replay-internal.h
@@ -25,7 +25,12 @@ typedef enum ReplayAsyncEventKind {
REPLAY_ASYNC_COUNT
} ReplayAsyncEventKind;
-/* Any changes to order/number of events will need to bump REPLAY_VERSION */
+/*
+ * Any changes to order/number of events will need to bump
+ * REPLAY_VERSION to prevent confusion with old logs. Also don't
+ * forget to update replay_event_name() to make your debugging life
+ * easier.
+ */
enum ReplayEvents {
/* for instruction event */
EVENT_INSTRUCTION,
@@ -74,6 +79,7 @@ enum ReplayEvents {
* @cached_clock: Cached clocks values
* @current_icount: number of processed instructions
* @instruction_count: number of instructions until next event
+ * @current_event: current event index
* @data_kind: current event
* @has_unread_data: true if event not yet processed
* @file_offset: offset into replay log at replay snapshot
@@ -84,6 +90,7 @@ typedef struct ReplayState {
int64_t cached_clock[REPLAY_CLOCK_COUNT];
uint64_t current_icount;
int instruction_count;
+ unsigned int current_event;
unsigned int data_kind;
bool has_unread_data;
uint64_t file_offset;
@@ -188,6 +195,16 @@ void replay_event_net_save(void *opaque);
/*! Reads network from the file. */
void *replay_event_net_load(void);
+/* Diagnostics */
+
+/**
+ * replay_sync_error(): report sync error and exit
+ *
+ * When we reach an error condition we want to report it centrally so
+ * we can also dump some useful information into the logs.
+ */
+G_NORETURN void replay_sync_error(const char *error);
+
/* VMState-related functions */
/* Registers replay VMState.
diff --git a/replay/replay-snapshot.c b/replay/replay-snapshot.c
index d4f6cb7cda..ccb4d89dda 100644
--- a/replay/replay-snapshot.c
+++ b/replay/replay-snapshot.c
@@ -55,6 +55,7 @@ static const VMStateDescription vmstate_replay = {
VMSTATE_INT64_ARRAY(cached_clock, ReplayState, REPLAY_CLOCK_COUNT),
VMSTATE_UINT64(current_icount, ReplayState),
VMSTATE_INT32(instruction_count, ReplayState),
+ VMSTATE_UINT32(current_event, ReplayState),
VMSTATE_UINT32(data_kind, ReplayState),
VMSTATE_BOOL(has_unread_data, ReplayState),
VMSTATE_UINT64(file_offset, ReplayState),
diff --git a/replay/replay.c b/replay/replay.c
index 0f7d766efe..ff197f436b 100644
--- a/replay/replay.c
+++ b/replay/replay.c
@@ -38,6 +38,107 @@ static GSList *replay_blockers;
uint64_t replay_break_icount = -1ULL;
QEMUTimer *replay_break_timer;
+/* Pretty print event names */
+
+static const char *replay_async_event_name(ReplayAsyncEventKind event)
+{
+ switch (event) {
+#define ASYNC_EVENT(_x) case REPLAY_ASYNC_EVENT_ ## _x: return "ASYNC_EVENT_"#_x
+ ASYNC_EVENT(BH);
+ ASYNC_EVENT(BH_ONESHOT);
+ ASYNC_EVENT(INPUT);
+ ASYNC_EVENT(INPUT_SYNC);
+ ASYNC_EVENT(CHAR_READ);
+ ASYNC_EVENT(BLOCK);
+ ASYNC_EVENT(NET);
+#undef ASYNC_EVENT
+ default:
+ g_assert_not_reached();
+ }
+}
+
+static const char *replay_clock_event_name(ReplayClockKind clock)
+{
+ switch (clock) {
+#define CLOCK_EVENT(_x) case REPLAY_CLOCK_ ## _x: return "CLOCK_" #_x
+ CLOCK_EVENT(HOST);
+ CLOCK_EVENT(VIRTUAL_RT);
+#undef CLOCK_EVENT
+ default:
+ g_assert_not_reached();
+ }
+}
+
+/* Pretty print shutdown event names */
+static const char *replay_shutdown_event_name(ShutdownCause cause)
+{
+ switch (cause) {
+#define SHUTDOWN_EVENT(_x) case SHUTDOWN_CAUSE_ ## _x: return "SHUTDOWN_CAUSE_" #_x
+ SHUTDOWN_EVENT(NONE);
+ SHUTDOWN_EVENT(HOST_ERROR);
+ SHUTDOWN_EVENT(HOST_QMP_QUIT);
+ SHUTDOWN_EVENT(HOST_QMP_SYSTEM_RESET);
+ SHUTDOWN_EVENT(HOST_SIGNAL);
+ SHUTDOWN_EVENT(HOST_UI);
+ SHUTDOWN_EVENT(GUEST_SHUTDOWN);
+ SHUTDOWN_EVENT(GUEST_RESET);
+ SHUTDOWN_EVENT(GUEST_PANIC);
+ SHUTDOWN_EVENT(SUBSYSTEM_RESET);
+ SHUTDOWN_EVENT(SNAPSHOT_LOAD);
+#undef SHUTDOWN_EVENT
+ default:
+ g_assert_not_reached();
+ }
+}
+
+static const char *replay_checkpoint_event_name(enum ReplayCheckpoint checkpoint)
+{
+ switch (checkpoint) {
+#define CHECKPOINT_EVENT(_x) case CHECKPOINT_ ## _x: return "CHECKPOINT_" #_x
+ CHECKPOINT_EVENT(CLOCK_WARP_START);
+ CHECKPOINT_EVENT(CLOCK_WARP_ACCOUNT);
+ CHECKPOINT_EVENT(RESET_REQUESTED);
+ CHECKPOINT_EVENT(SUSPEND_REQUESTED);
+ CHECKPOINT_EVENT(CLOCK_VIRTUAL);
+ CHECKPOINT_EVENT(CLOCK_HOST);
+ CHECKPOINT_EVENT(CLOCK_VIRTUAL_RT);
+ CHECKPOINT_EVENT(INIT);
+ CHECKPOINT_EVENT(RESET);
+#undef CHECKPOINT_EVENT
+ default:
+ g_assert_not_reached();
+ }
+}
+
+static const char *replay_event_name(enum ReplayEvents event)
+{
+ /* First deal with the simple ones */
+ switch (event) {
+#define EVENT(_x) case EVENT_ ## _x: return "EVENT_"#_x
+ EVENT(INSTRUCTION);
+ EVENT(INTERRUPT);
+ EVENT(EXCEPTION);
+ EVENT(CHAR_WRITE);
+ EVENT(CHAR_READ_ALL);
+ EVENT(AUDIO_OUT);
+ EVENT(AUDIO_IN);
+ EVENT(RANDOM);
+#undef EVENT
+ default:
+ if (event >= EVENT_ASYNC && event <= EVENT_ASYNC_LAST) {
+ return replay_async_event_name(event - EVENT_ASYNC);
+ } else if (event >= EVENT_SHUTDOWN && event <= EVENT_SHUTDOWN_LAST) {
+ return replay_shutdown_event_name(event - EVENT_SHUTDOWN);
+ } else if (event >= EVENT_CLOCK && event <= EVENT_CLOCK_LAST) {
+ return replay_clock_event_name(event - EVENT_CLOCK);
+ } else if (event >= EVENT_CHECKPOINT && event <= EVENT_CHECKPOINT_LAST) {
+ return replay_checkpoint_event_name(event - EVENT_CHECKPOINT);
+ }
+ }
+
+ g_assert_not_reached();
+}
+
bool replay_next_event_is(int event)
{
bool res = false;
@@ -226,6 +327,15 @@ bool replay_has_event(void)
return res;
}
+G_NORETURN void replay_sync_error(const char *error)
+{
+ error_report("%s (insn total %"PRId64"/%d left, event %d is %s)", error,
+ replay_state.current_icount, replay_state.instruction_count,
+ replay_state.current_event,
+ replay_event_name(replay_state.data_kind));
+ abort();
+}
+
static void replay_enable(const char *fname, int mode)
{
const char *fmode = NULL;
@@ -258,6 +368,7 @@ static void replay_enable(const char *fname, int mode)
replay_state.data_kind = -1;
replay_state.instruction_count = 0;
replay_state.current_icount = 0;
+ replay_state.current_event = 0;
replay_state.has_unread_data = 0;
/* skip file header for RECORD and check it for PLAY */
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-28 00:06:10 +0000