From 8bd7f71d794b93ce027b856f5b79a98f4f82e44c Mon Sep 17 00:00:00 2001 From: Pavel Dovgalyuk Date: Thu, 17 Sep 2015 19:24:44 +0300 Subject: replay: checkpoints This patch introduces checkpoints that synchronize cpu thread and iothread. When checkpoint is met in the code all asynchronous events from the queue are executed. Signed-off-by: Pavel Dovgalyuk Message-Id: <20150917162444.8676.52916.stgit@PASHA-ISP.def.inno> Signed-off-by: Paolo Bonzini Signed-off-by: Pavel Dovgalyuk --- include/sysemu/replay.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'include') diff --git a/include/sysemu/replay.h b/include/sysemu/replay.h index fcc93d1..e2696fe 100644 --- a/include/sysemu/replay.h +++ b/include/sysemu/replay.h @@ -26,6 +26,20 @@ enum ReplayClockKind { }; typedef enum ReplayClockKind ReplayClockKind; +/* IDs of the checkpoints */ +enum ReplayCheckpoint { + CHECKPOINT_CLOCK_WARP, + CHECKPOINT_RESET_REQUESTED, + CHECKPOINT_SUSPEND_REQUESTED, + CHECKPOINT_CLOCK_VIRTUAL, + CHECKPOINT_CLOCK_HOST, + CHECKPOINT_CLOCK_VIRTUAL_RT, + CHECKPOINT_INIT, + CHECKPOINT_RESET, + CHECKPOINT_COUNT +}; +typedef enum ReplayCheckpoint ReplayCheckpoint; + extern ReplayMode replay_mode; /* Processing the instructions */ @@ -70,6 +84,12 @@ int64_t replay_read_clock(ReplayClockKind kind); /*! Called when qemu shutdown is requested. */ void replay_shutdown_request(void); +/*! Should be called at check points in the execution. + These check points are skipped, if they were not met. + Saves checkpoint in the SAVE mode and validates in the PLAY mode. + Returns 0 in PLAY mode if checkpoint was not found. + Returns 1 in all other cases. */ +bool replay_checkpoint(ReplayCheckpoint checkpoint); /* Asynchronous events queue */ -- cgit v1.1