1e41f4b71Sopenharmony_ci# loop.h 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ci 4e41f4b71Sopenharmony_ci## 概述 5e41f4b71Sopenharmony_ci 6e41f4b71Sopenharmony_ci声明FFRT LOOP机制的C接口。 7e41f4b71Sopenharmony_ci 8e41f4b71Sopenharmony_ci**系统能力：** SystemCapability.Resourceschedule.Ffrt.Core 9e41f4b71Sopenharmony_ci 10e41f4b71Sopenharmony_ci**起始版本：** 12 11e41f4b71Sopenharmony_ci 12e41f4b71Sopenharmony_ci**相关模块：**[FFRT](_f_f_r_t.md) 13e41f4b71Sopenharmony_ci 14e41f4b71Sopenharmony_ci 15e41f4b71Sopenharmony_ci## 汇总 16e41f4b71Sopenharmony_ci 17e41f4b71Sopenharmony_ci 18e41f4b71Sopenharmony_ci### 类型定义 19e41f4b71Sopenharmony_ci 20e41f4b71Sopenharmony_ci| 名称 | 描述 | 21e41f4b71Sopenharmony_ci| -------- | -------- | 22e41f4b71Sopenharmony_ci| typedef void\* **ffrt_loop_t** | | 23e41f4b71Sopenharmony_ci 24e41f4b71Sopenharmony_ci 25e41f4b71Sopenharmony_ci### 函数 26e41f4b71Sopenharmony_ci 27e41f4b71Sopenharmony_ci| 名称 | 描述 | 28e41f4b71Sopenharmony_ci| -------- | -------- | 29e41f4b71Sopenharmony_ci| FFRT_C_API ffrt_loop_t [ffrt_loop_create](_f_f_r_t.md#ffrt_loop_create) ([ffrt_queue_t](_f_f_r_t.md) queue) | 创建loop队列。 | 30e41f4b71Sopenharmony_ci| FFRT_C_API int [ffrt_loop_destory](_f_f_r_t.md#ffrt_loop_destory) (ffrt_loop_t loop) | 销毁loop队对象。 | 31e41f4b71Sopenharmony_ci| FFRT_C_API int [ffrt_loop_run](_f_f_r_t.md#ffrt_loop_run) (ffrt_loop_t loop) | 开启loop循环。 | 32e41f4b71Sopenharmony_ci| FFRT_C_API void [ffrt_loop_stop](_f_f_r_t.md#ffrt_loop_stop) (ffrt_loop_t loop) | 停止loop循环。 | 33e41f4b71Sopenharmony_ci| FFRT_C_API int [ffrt_loop_epoll_ctl](_f_f_r_t.md#ffrt_loop_epoll_ctl) (ffrt_loop_t loop, int op, int fd, uint32_t events, void\* data, [ffrt_poller_cb](_f_f_r_t.md#ffrt_poller_cb) cb) | 管理loop上的监听事件。 | 34e41f4b71Sopenharmony_ci| FFRT_C_API [ffrt_timer_t](_f_f_r_t.md#ffrt_timer_t)[ffrt_loop_timer_start](_f_f_r_t.md#ffrt_loop_timer_start) (ffrt_loop_t loop, uint64_t timeout, void\* data, [ffrt_timer_cb](_f_f_r_t.md#ffrt_timer_cb) cb, bool repeat) | 在ffrt loop上启动定时器。 | 35e41f4b71Sopenharmony_ci| FFRT_C_API int [ffrt_loop_timer_stop](_f_f_r_t.md#ffrt_loop_timer_stop) (ffrt_loop_t loop, [ffrt_timer_t](_f_f_r_t.md#ffrt_timer_t) handle) | 停止ffrt loop定时器。 | 36