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main-loop: update comment for qemu_mutex_lock/unlock_iothread 

Commit 49cf57281b (vl: delay thread initialization after daemonization)
makes the global mutex is taken after daemonization instead before
daemonization by qemu_init_main_loop().

Signed-off-by: Yaowei Bai <baiyaowei@cmss.chinamobile.com>
Message-Id: <1480566640-27264-2-git-send-email-baiyaowei@cmss.chinamobile.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Yaowei Bai 2016-11-30 23:30:39 -05:00 committed by Paolo Bonzini
parent 45241cf9d7
commit 11717bc93a
1 changed files with 2 additions and 2 deletions
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4
include/qemu/main-loop.h
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@ -238,7 +238,7 @@ bool qemu_mutex_iothread_locked(void);
* qemu_mutex_lock_iothread: Lock the main loop mutex.
*
* This function locks the main loop mutex. The mutex is taken by
* qemu_init_main_loop and always taken except while waiting on
* main() in vl.c and always taken except while waiting on
* external events (such as with select). The mutex should be taken
* by threads other than the main loop thread when calling
* qemu_bh_new(), qemu_set_fd_handler() and basically all other
@ -253,7 +253,7 @@ void qemu_mutex_lock_iothread(void);
* qemu_mutex_unlock_iothread: Unlock the main loop mutex.
*
* This function unlocks the main loop mutex. The mutex is taken by
* qemu_init_main_loop and always taken except while waiting on
* main() in vl.c and always taken except while waiting on
* external events (such as with select). The mutex should be unlocked
* as soon as possible by threads other than the main loop thread,
* because it prevents the main loop from processing callbacks,