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#ifndef __GRPC_INTERNAL_IOMGR_ALARM_INTERNAL_H_
#define __GRPC_INTERNAL_IOMGR_ALARM_INTERNAL_H_

#include <grpc/support/sync.h>
#include <grpc/support/time.h>

/* iomgr internal api for dealing with alarms */

/* Check for alarms to be run, and run them. 
   Return non zero if alarm callbacks were executed.
   Drops drop_mu if it is non-null before executing callbacks.
   If next is non-null, TRY to update *next with the next running alarm
   IF that alarm occurs before *next current value.
   *next is never guaranteed to be updated on any given execution; however,
   with high probability at least one thread in the system will see an update
   at any time slice. */

int grpc_alarm_check(gpr_mu *drop_mu, gpr_timespec now, gpr_timespec *next);

void grpc_alarm_list_init(gpr_timespec now);
void grpc_alarm_list_shutdown(void);

gpr_timespec grpc_alarm_list_next_timeout(void);

/* the following must be implemented by each iomgr implementation */

void grpc_kick_poller(void);

#endif /* __GRPC_INTERNAL_IOMGR_ALARM_INTERNAL_H_ */