diff options
Diffstat (limited to 'include/sysemu/replay.h')
| -rw-r--r-- | include/sysemu/replay.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/sysemu/replay.h b/include/sysemu/replay.h index c0204e641c..3ced6bc231 100644 --- a/include/sysemu/replay.h +++ b/include/sysemu/replay.h @@ -48,6 +48,19 @@ extern ReplayMode replay_mode; /* Name of the initial VM snapshot */ extern char *replay_snapshot; +/* Replay locking + * + * The locks are needed to protect the shared structures and log file + * when doing record/replay. They also are the main sync-point between + * the main-loop thread and the vCPU thread. This was a role + * previously filled by the BQL which has been busy trying to reduce + * its impact across the code. This ensures blocks of events stay + * sequential and reproducible. + */ + +void replay_mutex_lock(void); +void replay_mutex_unlock(void); + /* Replay process control functions */ /*! Enables recording or saving event log with specified parameters */ @@ -166,5 +179,8 @@ void replay_audio_in(int *recorded, void *samples, int *wpos, int size); /*! Called at the start of execution. Loads or saves initial vmstate depending on execution mode. */ void replay_vmstate_init(void); +/*! Called to ensure that replay state is consistent and VM snapshot + can be created */ +bool replay_can_snapshot(void); #endif |