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coroutine-lock: introduce qemu_co_queue_enter_all

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Because qemu_co_queue_restart_all does not release the lock, it should
be used only in coroutine context.  Introduce a new function that,
like qemu_co_enter_next, does release the lock, and use it whenever
qemu_co_queue_restart_all was used outside coroutine context.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20220427130830.150180-3-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2022-04-27 15:08:29 +02:00
parent 248af9e80a
commit d6ee15adec
3 changed files with 21 additions and 1 deletions
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7
util/qemu-coroutine-lock.c
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@ -108,6 +108,13 @@ bool coroutine_fn qemu_co_queue_next(CoQueue *queue)
return qemu_co_enter_next_impl(queue, NULL);
}
void qemu_co_enter_all_impl(CoQueue *queue, QemuLockable *lock)
{
while (qemu_co_enter_next_impl(queue, lock)) {
/* just loop */
}
}
bool qemu_co_queue_empty(CoQueue *queue)
{
return QSIMPLEQ_FIRST(&queue->entries) == NULL;