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/*
============================================================================
Name : hev-task-cio-buffer.h
Author : hev <r@hev.cc>
Copyright : Copyright (c) 2024 hev.
Description : Task Chain I/O Buffer
============================================================================
*/
#ifndef __HEV_TASK_CIO_BUFFER_H__
#define __HEV_TASK_CIO_BUFFER_H__
#include <hev-task-cio.h>
#include <hev-circular-buffer.h>
#ifdef __cplusplus
extern "C" {
#endif
#define HEV_TASK_CIO_BUFFER(p) ((HevTaskCIOBuffer *)p)
#define HEV_TASK_CIO_BUFFER_CLASS(p) ((HevTaskCIOBufferClass *)p)
#define HEV_TASK_CIO_BUFFER_TYPE (hev_task_cio_buffer_class ())
typedef struct _HevTaskCIOBuffer HevTaskCIOBuffer;
typedef struct _HevTaskCIOBufferClass HevTaskCIOBufferClass;
struct _HevTaskCIOBuffer
{
HevTaskCIO base;
HevCircularBuffer *rbuf;
HevCircularBuffer *wbuf;
};
struct _HevTaskCIOBufferClass
{
HevTaskCIOClass base;
};
/**
* hev_task_cio_buffer_class:
*
* Get the class of #HevTaskCIOBuffer.
*
* Returns: a new #HeObjectClass.
*
* Since: 5.3
*/
HevObjectClass *hev_task_cio_buffer_class (void);
/**
* hev_task_cio_buffer_construct:
* @self: a #HevTaskCIO
* @rsize: read buffer size
* @wsize: write buffer size
*
* Construct a new #HevTaskCIOBuffer.
*
* Returns: When successful, returns zero. otherwise, returns -1.
*
* Since: 5.3
*/
int hev_task_cio_buffer_construct (HevTaskCIOBuffer *self, size_t rsize,
size_t wsize);
/**
* hev_task_cio_buffer_new:
* @rsize: read buffer size
* @wsize: write buffer size
*
* Create a new #HevTaskCIOBuffer.
*
* Returns: a #HevTaskCIOBuffer
*
* Since: 5.3
*/
HevTaskCIOBuffer *hev_task_cio_buffer_new (size_t rsize, size_t wsize);
/**
* hev_task_cio_buffer_peek:
* @self: a #HevTaskCIOBuffer
* @buf: buffer
* @count: buffer length
*
* The peek function shall attempt to peek at @count bytes from @self,
* into the buffer pointed to by @buf.
*
* Returns: the number of bytes actually peek
*
* Since: 5.3
*/
ssize_t hev_task_cio_buffer_peek (HevTaskCIOBuffer *self, void *buf,
size_t count);
/**
* hev_task_cio_buffer_peekv:
* @self: a #HevTaskCIOBuffer
* @iov: a io vector contain two elements
*
* The peekv function shall attempt to peek at all bytes from @self,
* writing the references into @iov.
*
* Returns: the number of iov actually used
*
* Since: 5.3
*/
int hev_task_cio_buffer_peekv (HevTaskCIOBuffer *self, struct iovec *iov);
#ifdef __cplusplus
}
#endif
#endif /* __HEV_TASK_CIO_BUFFER_H__ */