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| author | Markus Armbruster <armbru@redhat.com> | 2015-10-15 17:08:31 +0200 |
|---|---|---|
| committer | Markus Armbruster <armbru@redhat.com> | 2015-10-29 14:34:45 +0100 |
| commit | 93f8f982fedfc9ee9cf5fc8983c3b25efe828967 (patch) | |
| tree | 624933100cf01b286b8b52882d4a77e345afef69 /trace-events | |
| parent | 688b4b7de755f4dd01ec516975ae01590cf9f438 (diff) | |
| download | hqemu-93f8f982fedfc9ee9cf5fc8983c3b25efe828967.zip hqemu-93f8f982fedfc9ee9cf5fc8983c3b25efe828967.tar.gz | |
monitor: Simplify event throttling
The event throttling state machine is hard to understand. I'm not
sure it's entirely correct. Rewrite it in a more straightforward
manner:
State 1: No event sent recently (less than evconf->rate ns ago)
Invariant: evstate->timer is not pending, evstate->qdict is null
On event: send event, arm timer, goto state 2
State 2: Event sent recently, no additional event being delayed
Invariant: evstate->timer is pending, evstate->qdict is null
On event: store it in evstate->qdict, goto state 3
On timer: goto state 1
State 3: Event sent recently, additional event being delayed
Invariant: evstate->timer is pending, evstate->qdict is non-null
On event: store it in evstate->qdict, goto state 3
On timer: send evstate->qdict, clear evstate->qdict,
arm timer, goto state 2
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1444921716-9511-3-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Diffstat (limited to 'trace-events')
| -rw-r--r-- | trace-events | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/trace-events b/trace-events index bdfe79f..72136b9 100644 --- a/trace-events +++ b/trace-events @@ -1031,9 +1031,9 @@ esp_pci_sbac_write(uint32_t reg, uint32_t val) "sbac: 0x%8.8x -> 0x%8.8x" # monitor.c handle_qmp_command(void *mon, const char *cmd_name) "mon %p cmd_name \"%s\"" monitor_protocol_emitter(void *mon) "mon %p" -monitor_protocol_event_handler(uint32_t event, void *data, uint64_t last, uint64_t now) "event=%d data=%p last=%" PRId64 " now=%" PRId64 +monitor_protocol_event_handler(uint32_t event, void *qdict) "event=%d data=%p" monitor_protocol_event_emit(uint32_t event, void *data) "event=%d data=%p" -monitor_protocol_event_queue(uint32_t event, void *data, uint64_t rate, uint64_t last, uint64_t now) "event=%d data=%p rate=%" PRId64 " last=%" PRId64 " now=%" PRId64 +monitor_protocol_event_queue(uint32_t event, void *qdict, uint64_t rate) "event=%d data=%p rate=%" PRId64 monitor_protocol_event_throttle(uint32_t event, uint64_t rate) "event=%d rate=%" PRId64 # hw/net/opencores_eth.c |
