+++ /dev/null
-/*
- * Copyright (C) 2013 David Goulet <dgoulet@efficios.com>
- *
- * SPDX-License-Identifier: GPL-2.0-only
- *
- */
-
-#ifndef LTTNG_PIPE_H
-#define LTTNG_PIPE_H
-
-#include <pthread.h>
-#include <common/macros.h>
-#include <sys/types.h>
-
-enum lttng_pipe_state {
- LTTNG_PIPE_STATE_OPENED = 1,
- LTTNG_PIPE_STATE_CLOSED = 2,
-};
-
-struct lttng_pipe {
- /* Read: 0, Write: 1. */
- int fd[2];
- /*
- * Flags of the pipe once opened. pipe(2) specifies either O_NONBLOCK or
- * O_CLOEXEC can be used. Flags are set using fcntl(2) call.
- */
- int flags;
-
- /*
- * These states are protected by the operation mutex below.
- */
- enum lttng_pipe_state r_state;
- enum lttng_pipe_state w_state;
-
- /* Held for each read(2) operation. */
- pthread_mutex_t read_mutex;
- /* Held for each write(2) operation. */
- pthread_mutex_t write_mutex;
-};
-
-/*
- * Return 1 if read side is open else 0.
- */
-static inline int lttng_pipe_is_read_open(const struct lttng_pipe *pipe)
-{
- return pipe->r_state == LTTNG_PIPE_STATE_OPENED ? 1 : 0;
-}
-
-/*
- * Return 1 if write side is open else 0.
- */
-static inline int lttng_pipe_is_write_open(const struct lttng_pipe *pipe)
-{
- return pipe->w_state == LTTNG_PIPE_STATE_OPENED ? 1 : 0;
-}
-
-static inline int lttng_pipe_get_readfd(const struct lttng_pipe *pipe)
-{
- return pipe->fd[0];
-}
-
-static inline int lttng_pipe_get_writefd(const struct lttng_pipe *pipe)
-{
- return pipe->fd[1];
-}
-
-struct lttng_pipe *lttng_pipe_open(int flags);
-struct lttng_pipe *lttng_pipe_named_open(const char *path, mode_t mode,
- int flags);
-int lttng_pipe_write_close(struct lttng_pipe *pipe);
-int lttng_pipe_read_close(struct lttng_pipe *pipe);
-/* Close both side of pipe. */
-int lttng_pipe_close(struct lttng_pipe *pipe);
-void lttng_pipe_destroy(struct lttng_pipe *pipe);
-
-ssize_t lttng_pipe_read(struct lttng_pipe *pipe, void *buf, size_t count);
-ssize_t lttng_pipe_write(struct lttng_pipe *pipe, const void *buf,
- size_t count);
-/* Returns and releases the read end of the pipe. */
-int lttng_pipe_release_readfd(struct lttng_pipe *pipe);
-/* Returns and releases the write end of the pipe. */
-int lttng_pipe_release_writefd(struct lttng_pipe *pipe);
-
-#endif /* LTTNG_PIPE_H */