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33 * version: DPDK.L.1.2.3-3
44 * Simple alarm-clock functionality supplied by eal.
45 * Does not require hpet support.
55 * Signature of callback back function called when an alarm goes off.
57 typedef void (*rte_eal_alarm_callback)(void *arg);
60 * Function to set a callback to be triggered when us microseconds
61 * have expired. Accuracy of timing to the microsecond is not guaranteed. The
62 * alarm function will not be called *before* the requested time, but may
63 * be called a short period of time afterwards.
64 * The alarm handler will be called only once. There is no need to call
65 * "rte_eal_alarm_cancel" from within the callback function.
68 * The time in microseconds before the callback is called
70 * The function to be called when the alarm expires
72 * Pointer parameter to be passed to the callback function
76 * On failure, a negative error number
78 int rte_eal_alarm_set(uint64_t us, rte_eal_alarm_callback cb, void *cb_arg);
81 * Function to cancel an alarm callback which has been registered before.
86 * Pointer parameter to be passed to the callback function. To remove all
87 * copies of a given callback function, irrespective of parameter, (void *)-1
91 * - The number of callbacks removed
93 int rte_eal_alarm_cancel(rte_eal_alarm_callback cb_fn, void *cb_arg);
100 #endif /* _RTE_ALARM_H_ */