| #ifndef BUF_H |
| #define BUF_H |
| /*=========================================================================*\ |
| * Input/Output interface for Lua programs |
| * LuaSocket toolkit |
| * |
| * Line patterns require buffering. Reading one character at a time involves |
| * too many system calls and is very slow. This module implements the |
| * LuaSocket interface for input/output on connected objects, as seen by |
| * Lua programs. |
| * |
| * Input is buffered. Output is *not* buffered because there was no simple |
| * way of making sure the buffered output data would ever be sent. |
| * |
| * The module is built on top of the I/O abstraction defined in io.h and the |
| * timeout management is done with the timeout.h interface. |
| * |
| * RCS ID: $Id: buffer.h,v 1.12 2005/10/07 04:40:59 diego Exp $ |
| \*=========================================================================*/ |
| #include "lua.h" |
| |
| #include "io.h" |
| #include "timeout.h" |
| |
| /* buffer size in bytes */ |
| #define BUF_SIZE 8192 |
| |
| /* buffer control structure */ |
| typedef struct t_buffer_ { |
| double birthday; /* throttle support info: creation time, */ |
| size_t sent, received; /* bytes sent, and bytes received */ |
| p_io io; /* IO driver used for this buffer */ |
| p_timeout tm; /* timeout management for this buffer */ |
| size_t first, last; /* index of first and last bytes of stored data */ |
| char data[BUF_SIZE]; /* storage space for buffer data */ |
| } t_buffer; |
| typedef t_buffer *p_buffer; |
| |
| int buffer_open(lua_State *L); |
| void buffer_init(p_buffer buf, p_io io, p_timeout tm); |
| int buffer_meth_send(lua_State *L, p_buffer buf); |
| int buffer_meth_receive(lua_State *L, p_buffer buf); |
| int buffer_meth_getstats(lua_State *L, p_buffer buf); |
| int buffer_meth_setstats(lua_State *L, p_buffer buf); |
| int buffer_isempty(p_buffer buf); |
| |
| #endif /* BUF_H */ |