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iothread: replace init_done_cond with a semaphore

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Only sending an init-done message using lock+cond seems an overkill to
me.  Replacing it with a simpler semaphore.

Meanwhile, init the semaphore unconditionally, then we can destroy it
unconditionally too in finalize which seems cleaner.

Signed-off-by: Peter Xu <peterx@redhat.com>
Message-id: 20190306115532.23025-2-peterx@redhat.com
Message-Id: <20190306115532.23025-2-peterx@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Peter Xu 2019-03-06 19:55:28 +08:00 • committed by Stefan Hajnoczi
parent bf4069fbd7
commit 21c4d15b47
2 changed files with 5 additions and 15 deletions
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3
include/sysemu/iothread.h
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@ -27,8 +27,7 @@ typedef struct {
GMainContext *worker_context;
GMainLoop *main_loop;
GOnce once;
QemuMutex init_done_lock;
QemuCond init_done_cond; /* is thread initialization done? */
QemuSemaphore init_done_sem; /* is thread init done? */
bool stopping; /* has iothread_stop() been called? */
bool running; /* should iothread_run() continue? */
int thread_id;