Truncated history

tpws/epoll-shim/src/eventfd_ctx.h

@@ -0,0 +1,31 @@
+#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