Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

[mirror_qemu.git] / replay / replay-internal.h

diff --git a/replay/replay-internal.h b/replay/replay-internal.h
index c26d0795f25286e7b9ce9828e50c80256dccb004..89e377be90f38d01aa9c121d7ee9fc26705a8642 100644 (file)
--- a/replay/replay-internal.h
+++ b/replay/replay-internal.h
@@ -12,7 +12,20 @@
  *
  */
 
+/* Asynchronous events IDs */
 
+typedef enum ReplayAsyncEventKind {
+    REPLAY_ASYNC_EVENT_BH,
+    REPLAY_ASYNC_EVENT_BH_ONESHOT,
+    REPLAY_ASYNC_EVENT_INPUT,
+    REPLAY_ASYNC_EVENT_INPUT_SYNC,
+    REPLAY_ASYNC_EVENT_CHAR_READ,
+    REPLAY_ASYNC_EVENT_BLOCK,
+    REPLAY_ASYNC_EVENT_NET,
+    REPLAY_ASYNC_COUNT
+} ReplayAsyncEventKind;
+
+/* Any changes to order/number of events will need to bump REPLAY_VERSION */
 enum ReplayEvents {
     /* for instruction event */
     EVENT_INSTRUCTION,
@@ -22,13 +35,21 @@ enum ReplayEvents {
     EVENT_EXCEPTION,
     /* for async events */
     EVENT_ASYNC,
-    /* for shutdown request */
+    EVENT_ASYNC_LAST = EVENT_ASYNC + REPLAY_ASYNC_COUNT - 1,
+    /* for shutdown requests, range allows recovery of ShutdownCause */
     EVENT_SHUTDOWN,
+    EVENT_SHUTDOWN_LAST = EVENT_SHUTDOWN + SHUTDOWN_CAUSE__MAX,
     /* for character device write event */
     EVENT_CHAR_WRITE,
     /* for character device read all event */
     EVENT_CHAR_READ_ALL,
     EVENT_CHAR_READ_ALL_ERROR,
+    /* for audio out event */
+    EVENT_AUDIO_OUT,
+    /* for audio in event */
+    EVENT_AUDIO_IN,
+    /* for random number generator */
+    EVENT_RANDOM,
     /* for clock read/writes */
     /* some of greater codes are reserved for clocks */
     EVENT_CLOCK,
@@ -42,27 +63,13 @@ enum ReplayEvents {
     EVENT_COUNT
 };
 
-/* Asynchronous events IDs */
-
-enum ReplayAsyncEventKind {
-    REPLAY_ASYNC_EVENT_BH,
-    REPLAY_ASYNC_EVENT_INPUT,
-    REPLAY_ASYNC_EVENT_INPUT_SYNC,
-    REPLAY_ASYNC_EVENT_CHAR_READ,
-    REPLAY_ASYNC_EVENT_BLOCK,
-    REPLAY_ASYNC_EVENT_NET,
-    REPLAY_ASYNC_COUNT
-};
-
-typedef enum ReplayAsyncEventKind ReplayAsyncEventKind;
-
 typedef struct ReplayState {
     /*! Cached clock values. */
     int64_t cached_clock[REPLAY_CLOCK_COUNT];
-    /*! Current step - number of processed instructions and timer events. */
-    uint64_t current_step;
+    /*! Current icount - number of processed instructions. */
+    uint64_t current_icount;
     /*! Number of instructions to be executed before other events happen. */
-    int instructions_count;
+    int instruction_count;
     /*! Type of the currently executed event. */
     unsigned int data_kind;
     /*! Flag which indicates that event is not processed yet. */
@@ -73,11 +80,19 @@ typedef struct ReplayState {
         This counter is global, because requests from different
         block devices should not get overlapping ids. */
     uint64_t block_request_id;
+    /*! Prior value of the host clock */
+    uint64_t host_clock_last;
+    /*! Asynchronous event id read from the log */
+    uint64_t read_event_id;
 } ReplayState;
 extern ReplayState replay_state;
 
 /* File for replay writing */
 extern FILE *replay_file;
+/* Instruction count of the replay breakpoint */
+extern uint64_t replay_break_icount;
+/* Timer for the replay breakpoint callback */
+extern QEMUTimer *replay_break_timer;
 
 void replay_put_byte(uint8_t byte);
 void replay_put_event(uint8_t event);
@@ -93,12 +108,11 @@ int64_t replay_get_qword(void);
 void replay_get_array(uint8_t *buf, size_t *size);
 void replay_get_array_alloc(uint8_t **buf, size_t *size);
 
-/* Mutex functions for protecting replay log file */
+/* Mutex functions for protecting replay log file and ensuring
+ * synchronisation between vCPU and main-loop threads. */
 
 void replay_mutex_init(void);
-void replay_mutex_destroy(void);
-void replay_mutex_lock(void);
-void replay_mutex_unlock(void);
+bool replay_mutex_locked(void);
 
 /*! Checks error status of the file. */
 void replay_check_error(void);
@@ -110,6 +124,8 @@ void replay_finish_event(void);
     data_kind variable. */
 void replay_fetch_data_kind(void);
 
+/*! Advance replay_state.current_icount to the specified value. */
+void replay_advance_current_icount(uint64_t current_icount);
 /*! Saves queued events (like instructions and sound). */
 void replay_save_instructions(void);
 
@@ -128,16 +144,12 @@ void replay_read_next_clock(unsigned int kind);
 void replay_init_events(void);
 /*! Clears internal data structures for events handling */
 void replay_finish_events(void);
-/*! Flushes events queue */
-void replay_flush_events(void);
-/*! Clears events list before loading new VM state */
-void replay_clear_events(void);
 /*! Returns true if there are any unsaved events in the queue */
 bool replay_has_events(void);
 /*! Saves events from queue into the file */
-void replay_save_events(int checkpoint);
+void replay_save_events(void);
 /*! Read events from the file into the input queue */
-void replay_read_events(int checkpoint);
+void replay_read_events(void);
 /*! Adds specified async event to the queue */
 void replay_add_event(ReplayAsyncEventKind event_kind, void *opaque,
                       void *opaque2, uint64_t id);