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43 * Simple alarm-clock functionality supplied by eal.
44 * Does not require hpet support.
54 * Signature of callback back function called when an alarm goes off.
56 typedef void (*rte_eal_alarm_callback)(void *arg);
59 * Function to set a callback to be triggered when us microseconds
60 * have expired. Accuracy of timing to the microsecond is not guaranteed. The
61 * alarm function will not be called *before* the requested time, but may
62 * be called a short period of time afterwards.
63 * The alarm handler will be called only once. There is no need to call
64 * "rte_eal_alarm_cancel" from within the callback function.
67 * The time in microseconds before the callback is called
69 * The function to be called when the alarm expires
71 * Pointer parameter to be passed to the callback function
75 * On failure, a negative error number
77 int rte_eal_alarm_set(uint64_t us, rte_eal_alarm_callback cb, void *cb_arg);
80 * Function to cancel an alarm callback which has been registered before.
85 * Pointer parameter to be passed to the callback function. To remove all
86 * copies of a given callback function, irrespective of parameter, (void *)-1
90 * - The number of callbacks removed
92 int rte_eal_alarm_cancel(rte_eal_alarm_callback cb_fn, void *cb_arg);
99 #endif /* _RTE_ALARM_H_ */