coroutine-lock: place CoMutex before CoQueue in header
This will avoid forward references in the next patch. It is also more logical because CoQueue is not anymore the basic primitive. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Fam Zheng <famz@redhat.com> Message-id: 20170213181244.16297-5-pbonzini@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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@ -112,51 +112,6 @@ bool qemu_in_coroutine(void);
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*/
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bool qemu_coroutine_entered(Coroutine *co);
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/**
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* CoQueues are a mechanism to queue coroutines in order to continue executing
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* them later. They provide the fundamental primitives on which coroutine locks
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* are built.
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*/
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typedef struct CoQueue {
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QSIMPLEQ_HEAD(, Coroutine) entries;
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} CoQueue;
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/**
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* Initialise a CoQueue. This must be called before any other operation is used
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* on the CoQueue.
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*/
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void qemu_co_queue_init(CoQueue *queue);
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/**
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* Adds the current coroutine to the CoQueue and transfers control to the
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* caller of the coroutine.
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*/
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void coroutine_fn qemu_co_queue_wait(CoQueue *queue);
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/**
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* Restarts the next coroutine in the CoQueue and removes it from the queue.
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*
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* Returns true if a coroutine was restarted, false if the queue is empty.
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*/
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bool coroutine_fn qemu_co_queue_next(CoQueue *queue);
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/**
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* Restarts all coroutines in the CoQueue and leaves the queue empty.
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*/
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void coroutine_fn qemu_co_queue_restart_all(CoQueue *queue);
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/**
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* Enter the next coroutine in the queue
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*/
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bool qemu_co_enter_next(CoQueue *queue);
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/**
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* Checks if the CoQueue is empty.
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*/
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bool qemu_co_queue_empty(CoQueue *queue);
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/**
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* Provides a mutex that can be used to synchronise coroutines
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*/
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@ -202,6 +157,50 @@ void coroutine_fn qemu_co_mutex_lock(CoMutex *mutex);
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*/
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void coroutine_fn qemu_co_mutex_unlock(CoMutex *mutex);
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/**
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* CoQueues are a mechanism to queue coroutines in order to continue executing
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* them later.
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*/
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typedef struct CoQueue {
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QSIMPLEQ_HEAD(, Coroutine) entries;
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} CoQueue;
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/**
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* Initialise a CoQueue. This must be called before any other operation is used
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* on the CoQueue.
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*/
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void qemu_co_queue_init(CoQueue *queue);
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/**
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* Adds the current coroutine to the CoQueue and transfers control to the
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* caller of the coroutine.
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*/
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void coroutine_fn qemu_co_queue_wait(CoQueue *queue);
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/**
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* Restarts the next coroutine in the CoQueue and removes it from the queue.
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*
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* Returns true if a coroutine was restarted, false if the queue is empty.
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*/
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bool coroutine_fn qemu_co_queue_next(CoQueue *queue);
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/**
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* Restarts all coroutines in the CoQueue and leaves the queue empty.
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*/
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void coroutine_fn qemu_co_queue_restart_all(CoQueue *queue);
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/**
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* Enter the next coroutine in the queue
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*/
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bool qemu_co_enter_next(CoQueue *queue);
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/**
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* Checks if the CoQueue is empty.
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*/
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bool qemu_co_queue_empty(CoQueue *queue);
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typedef struct CoRwlock {
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bool writer;
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int reader;
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