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dmeventd: handle signal from plugin

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Add support to unmonitor device when monitor recognizes there is
nothing to monitor anymore.

TODO: possibly API change with return value could be also used.
This commit is contained in:
Zdenek Kabelac 2015-10-22 15:48:14 +02:00
parent 9156c5d088
commit 12aa56d298
2 changed files with 13 additions and 1 deletions
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3
WHATS_NEW_DM
View File

@ -1,6 +1,7 @@
Version 1.02.110 -
======================================
New design for thread cooperation in dmeventd.
Add support to allow unmonitor device from plugin itself.
New design for thread co-operation in dmeventd.
Dmeventd read device status with 'noflush'.
Dmeventd closes control device when no device is monitored.
Thin plugin for dmeventd improved percentage usage.

11
daemons/dmeventd/dmeventd.c
View File

@ -973,6 +973,17 @@ static void *_monitor_thread(void *arg)
_lock_mutex();
thread->processing = 0;
/*
* Thread can terminate itself from plugin via SIGALRM
* Timer thread will not send signal while processing
* TODO: maybe worth API change and return value for
* _do_process_event() instead of this signal solution
*/
if (sigpending(&pendmask) < 0)
log_sys_error("sigpending", "");
else if (sigismember(&pendmask, SIGALRM))
break;
} else {
_unlock_mutex();