harmony 鸿蒙queue.h
queue.h
Overview
The queue.h file declares the queue interfaces in C.
File to include: <ffrt/queue.h>
Library: libffrt.z.so
System capability: SystemCapability.Resourceschedule.Ffrt.Core
Since: 10
Related module: FFRT
Summary
Types
| Name | Description |
|---|---|
| typedef void * ffrt_queue_t | Defines the handle to a queue. |
Enums
| Name | Description |
|---|---|
| ffrt_queue_type_t { ffrt_queue_serial, ffrt_queue_concurrent, ffrt_queue_max } |
Enumerates the queue types. |
Functions
| Name | Description |
|---|---|
| FFRT_C_API int ffrt_queue_attr_init (ffrt_queue_attr_t *attr) | Initializes the queue attribute. |
| FFRT_C_API void ffrt_queue_attr_destroy (ffrt_queue_attr_t *attr) | Destroys the queue attribute. |
| FFRT_C_API void ffrt_queue_attr_set_qos (ffrt_queue_attr_t *attr, ffrt_qos_t qos) | Sets the queue QoS. |
| FFRT_C_API ffrt_qos_t ffrt_queue_attr_get_qos (const ffrt_queue_attr_t *attr) | Obtains the queue QoS. |
| FFRT_C_API void ffrt_queue_attr_set_timeout (ffrt_queue_attr_t *attr, uint64_t timeout_us) | Sets the queue timeout. |
| FFRT_C_API uint64_t ffrt_queue_attr_get_timeout (const ffrt_queue_attr_t *attr) | Obtains the queue timeout. |
| FFRT_C_API void ffrt_queue_attr_set_callback (ffrt_queue_attr_t *attr, ffrt_function_header_t *f) | Sets a callback that is invoked when a queue task times out. |
| FFRT_C_API ffrt_function_header_t * ffrt_queue_attr_get_callback (const ffrt_queue_attr_t *attr) | Obtains the callback that is invoked when a queue task times out. |
| FFRT_C_API void ffrt_queue_attr_set_max_concurrency (ffrt_queue_attr_t *attr, const int max_concurrency) | Sets the maximum concurrency for a queue, which must be a concurrent queue. |
| FFRT_C_API int ffrt_queue_attr_get_max_concurrency (const ffrt_queue_attr_t *attr) | Obtains the maximum concurrency of a queue, which must be a concurrent queue. |
| FFRT_C_API ffrt_queue_t ffrt_queue_create (ffrt_queue_type_t type, const char *name, const ffrt_queue_attr_t *attr) | Creates a queue. |
| FFRT_C_API void ffrt_queue_destroy (ffrt_queue_t queue) | Destroys a queue. |
| FFRT_C_API void ffrt_queue_submit (ffrt_queue_t queue, ffrt_function_header_t *f, const ffrt_task_attr_t *attr) | Submits a task to a queue. |
| FFRT_C_API ffrt_task_handle_t ffrt_queue_submit_h (ffrt_queue_t queue, ffrt_function_header_t *f, const ffrt_task_attr_t *attr) | Submits a task to a queue, and obtains the task handle. |
| FFRT_C_API void ffrt_queue_wait (ffrt_task_handle_t handle) | Waits until a task in the queue is complete. |
| FFRT_C_API int ffrt_queue_cancel (ffrt_task_handle_t handle) | Cancels a task in the queue. |
| FFRT_C_API ffrt_queue_t ffrt_get_main_queue (void) | Obtains the main thread queue. |
| FFRT_C_API ffrt_queue_t ffrt_get_current_queue (void) | Obtains the ArkTS Worker thread queue. |
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