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#ifndef EMACS_W32_H
#define EMACS_W32_H
/* Support routines for the NT version of Emacs.
Copyright (C) 1994, 2001-2011 Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
/* File descriptor set emulation. */
/* MSVC runtime library has limit of 64 descriptors by default */
#define FD_SETSIZE 64
typedef struct {
unsigned int bits[FD_SETSIZE / 32];
} fd_set;
/* standard access macros */
#define FD_SET(n, p) \
do { \
if ((n) < FD_SETSIZE) { \
(p)->bits[(n)/32] |= (1 << (n)%32); \
} \
} while (0)
#define FD_CLR(n, p) \
do { \
if ((n) < FD_SETSIZE) { \
(p)->bits[(n)/32] &= ~(1 << (n)%32); \
} \
} while (0)
#define FD_ISSET(n, p) ((n) < FD_SETSIZE ? ((p)->bits[(n)/32] & (1 << (n)%32)) : 0)
#define FD_ZERO(p) memset((p), 0, sizeof(fd_set))
#define SELECT_TYPE fd_set
/* ------------------------------------------------------------------------- */
/* child_process.status values */
enum {
STATUS_READ_ERROR = -1,
STATUS_READ_READY,
STATUS_READ_IN_PROGRESS,
STATUS_READ_FAILED,
STATUS_READ_SUCCEEDED,
STATUS_READ_ACKNOWLEDGED
};
/* This structure is used for both pipes and sockets; for
a socket, the process handle in pi is NULL. */
typedef struct _child_process
{
int fd;
int pid;
HANDLE char_avail;
HANDLE char_consumed;
HANDLE thrd;
HWND hwnd;
PROCESS_INFORMATION procinfo;
volatile int status;
char chr;
OVERLAPPED ovl_read;
OVERLAPPED ovl_write;
} child_process;
#define MAXDESC FD_SETSIZE
#define MAX_CHILDREN MAXDESC/2
#define CHILD_ACTIVE(cp) ((cp)->char_avail != NULL)
/* parallel array of private info on file handles */
typedef struct
{
unsigned flags;
HANDLE hnd;
child_process * cp;
} filedesc;
extern filedesc fd_info [ MAXDESC ];
/* fd_info flag definitions */
#define FILE_READ 0x0001
#define FILE_WRITE 0x0002
#define FILE_LISTEN 0x0004
#define FILE_BINARY 0x0010
#define FILE_LAST_CR 0x0020
#define FILE_AT_EOF 0x0040
#define FILE_SEND_SIGCHLD 0x0080
#define FILE_PIPE 0x0100
#define FILE_SOCKET 0x0200
#define FILE_NDELAY 0x0400
#define FILE_SERIAL 0x0800
extern child_process * new_child (void);
extern void delete_child (child_process *cp);
/* ------------------------------------------------------------------------- */
/* Equivalent of strerror for W32 error codes. */
extern char * w32_strerror (int error_no);
/* Validate a pointer. */
extern int w32_valid_pointer_p (void *, int);
/* Get long (aka "true") form of file name, if it exists. */
extern BOOL w32_get_long_filename (char * name, char * buf, int size);
/* Prepare our standard handles for proper inheritance by child processes. */
extern void prepare_standard_handles (int in, int out,
int err, HANDLE handles[4]);
/* Reset our standard handles to their original state. */
extern void reset_standard_handles (int in, int out,
int err, HANDLE handles[4]);
/* Return the string resource associated with KEY of type TYPE. */
extern LPBYTE w32_get_resource (char * key, LPDWORD type);
extern void init_ntproc (void);
extern void term_ntproc (void);
extern void globals_of_w32 (void);
extern void syms_of_w32term (void);
extern void syms_of_w32fns (void);
extern void globals_of_w32fns (void);
extern void syms_of_w32select (void);
extern void globals_of_w32select (void);
extern void term_w32select (void);
extern void syms_of_w32menu (void);
extern void globals_of_w32menu (void);
extern void syms_of_fontset (void);
extern int _sys_read_ahead (int fd);
extern int _sys_wait_accept (int fd);
extern Lisp_Object Vlibrary_cache, QCloaded_from;
extern HMODULE w32_delayed_load (Lisp_Object, Lisp_Object);
#ifdef HAVE_GNUTLS
#include <gnutls/gnutls.h>
/* GnuTLS pull (read from remote) interface. */
extern ssize_t emacs_gnutls_pull (gnutls_transport_ptr_t p,
void* buf, size_t sz);
/* GnuTLS push (write to remote) interface. */
extern ssize_t emacs_gnutls_push (gnutls_transport_ptr_t p,
const void* buf, size_t sz);
#endif /* HAVE_GNUTLS */
#endif /* EMACS_W32_H */
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