comparison: src/io.h
src/io.h
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| 1 #ifndef IO_H | |
| 2 #define IO_H | |
| 3 /*=========================================================================*\ | |
| 4 * LuaSocket 2.0.2 | |
| 5 * Copyright (C) 2004-2007 Diego Nehab | |
| 6 * | |
| 7 * Input/Output abstraction | |
| 8 * | |
| 9 * This module defines the interface that LuaSocket expects from the | |
| 10 * transport layer for streamed input/output. The idea is that if any | |
| 11 * transport implements this interface, then the buffer.c functions | |
| 12 * automatically work on it. | |
| 13 * | |
| 14 * The module socket.h implements this interface, and thus the module tcp.h | |
| 15 * is very simple. | |
| 16 * | |
| 17 * RCS ID: $Id: io.h 6 2006-04-30 20:33:05Z brunoos $ | |
| 18 \*=========================================================================*/ | |
| 19 #include <stdio.h> | |
| 20 #include <lua.h> | |
| 21 | |
| 22 #include "timeout.h" | |
| 23 | |
| 24 /* IO error codes */ | |
| 25 enum { | |
| 26 IO_DONE = 0, /* operation completed successfully */ | |
| 27 IO_TIMEOUT = -1, /* operation timed out */ | |
| 28 IO_CLOSED = -2, /* the connection has been closed */ | |
| 29 IO_UNKNOWN = -3, /* Unknown error */ | |
| 30 IO_SSL = -4 /* SSL error */ | |
| 31 }; | |
| 32 | |
| 33 /* interface to error message function */ | |
| 34 typedef const char *(*p_error) ( | |
| 35 void *ctx, /* context needed by send */ | |
| 36 int err /* error code */ | |
| 37 ); | |
| 38 | |
| 39 /* interface to send function */ | |
| 40 typedef int (*p_send) ( | |
| 41 void *ctx, /* context needed by send */ | |
| 42 const char *data, /* pointer to buffer with data to send */ | |
| 43 size_t count, /* number of bytes to send from buffer */ | |
| 44 size_t *sent, /* number of bytes sent uppon return */ | |
| 45 p_timeout tm /* timeout control */ | |
| 46 ); | |
| 47 | |
| 48 /* interface to recv function */ | |
| 49 typedef int (*p_recv) ( | |
| 50 void *ctx, /* context needed by recv */ | |
| 51 char *data, /* pointer to buffer where data will be writen */ | |
| 52 size_t count, /* number of bytes to receive into buffer */ | |
| 53 size_t *got, /* number of bytes received uppon return */ | |
| 54 p_timeout tm /* timeout control */ | |
| 55 ); | |
| 56 | |
| 57 /* IO driver definition */ | |
| 58 typedef struct t_io_ { | |
| 59 void *ctx; /* context needed by send/recv */ | |
| 60 p_send send; /* send function pointer */ | |
| 61 p_recv recv; /* receive function pointer */ | |
| 62 p_error error; /* strerror function */ | |
| 63 } t_io; | |
| 64 typedef t_io *p_io; | |
| 65 | |
| 66 void io_init(p_io io, p_send send, p_recv recv, p_error error, void *ctx); | |
| 67 const char *io_strerror(int err); | |
| 68 | |
| 69 #endif /* IO_H */ | |
| 70 |
