zapret/tpws/epoll-shim/src/eventfd_ctx.h
2021-03-04 14:30:38 +03:00

32 lines
682 B
C

#ifndef EVENTFD_CTX_H_
#define EVENTFD_CTX_H_
#include "fix.h"
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <pthread.h>
#define EVENTFD_CTX_FLAG_SEMAPHORE (1 << 0)
typedef struct {
int kq_; // non owning
int flags_;
pthread_mutex_t mutex_;
bool is_signalled_;
int self_pipe_[2]; // only used if EVFILT_USER is not available
uint_least64_t counter_;
} EventFDCtx;
errno_t eventfd_ctx_init(EventFDCtx *eventfd, int kq, unsigned int counter,
int flags);
errno_t eventfd_ctx_terminate(EventFDCtx *eventfd);
errno_t eventfd_ctx_write(EventFDCtx *eventfd, uint64_t value);
errno_t eventfd_ctx_read(EventFDCtx *eventfd, uint64_t *value);
#endif