| 1 | #ifndef EMACS_W32_H |
| 2 | #define EMACS_W32_H |
| 3 | |
| 4 | /* Support routines for the NT version of Emacs. |
| 5 | Copyright (C) 1994, 2002, 2003, 2004, 2005, |
| 6 | 2006 Free Software Foundation, Inc. |
| 7 | |
| 8 | This file is part of GNU Emacs. |
| 9 | |
| 10 | GNU Emacs is free software; you can redistribute it and/or modify |
| 11 | it under the terms of the GNU General Public License as published by |
| 12 | the Free Software Foundation; either version 2, or (at your option) |
| 13 | any later version. |
| 14 | |
| 15 | GNU Emacs is distributed in the hope that it will be useful, |
| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | GNU General Public License for more details. |
| 19 | |
| 20 | You should have received a copy of the GNU General Public License |
| 21 | along with GNU Emacs; see the file COPYING. If not, write to |
| 22 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 23 | Boston, MA 02110-1301, USA. */ |
| 24 | |
| 25 | |
| 26 | /* File descriptor set emulation. */ |
| 27 | |
| 28 | /* MSVC runtime library has limit of 64 descriptors by default */ |
| 29 | #define FD_SETSIZE 64 |
| 30 | typedef struct { |
| 31 | unsigned int bits[FD_SETSIZE / 32]; |
| 32 | } fd_set; |
| 33 | |
| 34 | /* standard access macros */ |
| 35 | #define FD_SET(n, p) \ |
| 36 | do { \ |
| 37 | if ((n) < FD_SETSIZE) { \ |
| 38 | (p)->bits[(n)/32] |= (1 << (n)%32); \ |
| 39 | } \ |
| 40 | } while (0) |
| 41 | #define FD_CLR(n, p) \ |
| 42 | do { \ |
| 43 | if ((n) < FD_SETSIZE) { \ |
| 44 | (p)->bits[(n)/32] &= ~(1 << (n)%32); \ |
| 45 | } \ |
| 46 | } while (0) |
| 47 | #define FD_ISSET(n, p) ((n) < FD_SETSIZE ? ((p)->bits[(n)/32] & (1 << (n)%32)) : 0) |
| 48 | #define FD_ZERO(p) memset((p), 0, sizeof(fd_set)) |
| 49 | |
| 50 | #define SELECT_TYPE fd_set |
| 51 | |
| 52 | /* ------------------------------------------------------------------------- */ |
| 53 | |
| 54 | /* child_process.status values */ |
| 55 | enum { |
| 56 | STATUS_READ_ERROR = -1, |
| 57 | STATUS_READ_READY, |
| 58 | STATUS_READ_IN_PROGRESS, |
| 59 | STATUS_READ_FAILED, |
| 60 | STATUS_READ_SUCCEEDED, |
| 61 | STATUS_READ_ACKNOWLEDGED |
| 62 | }; |
| 63 | |
| 64 | /* This structure is used for both pipes and sockets; for |
| 65 | a socket, the process handle in pi is NULL. */ |
| 66 | typedef struct _child_process |
| 67 | { |
| 68 | int fd; |
| 69 | int pid; |
| 70 | HANDLE char_avail; |
| 71 | HANDLE char_consumed; |
| 72 | HANDLE thrd; |
| 73 | HWND hwnd; |
| 74 | PROCESS_INFORMATION procinfo; |
| 75 | volatile int status; |
| 76 | char chr; |
| 77 | } child_process; |
| 78 | |
| 79 | #define MAXDESC FD_SETSIZE |
| 80 | #define MAX_CHILDREN MAXDESC/2 |
| 81 | #define CHILD_ACTIVE(cp) ((cp)->char_avail != NULL) |
| 82 | |
| 83 | /* parallel array of private info on file handles */ |
| 84 | typedef struct |
| 85 | { |
| 86 | unsigned flags; |
| 87 | HANDLE hnd; |
| 88 | child_process * cp; |
| 89 | } filedesc; |
| 90 | |
| 91 | extern filedesc fd_info [ MAXDESC ]; |
| 92 | |
| 93 | /* fd_info flag definitions */ |
| 94 | #define FILE_READ 0x0001 |
| 95 | #define FILE_WRITE 0x0002 |
| 96 | #define FILE_BINARY 0x0010 |
| 97 | #define FILE_LAST_CR 0x0020 |
| 98 | #define FILE_AT_EOF 0x0040 |
| 99 | #define FILE_SEND_SIGCHLD 0x0080 |
| 100 | #define FILE_PIPE 0x0100 |
| 101 | #define FILE_SOCKET 0x0200 |
| 102 | #define FILE_NDELAY 0x0400 |
| 103 | |
| 104 | extern child_process * new_child (void); |
| 105 | extern void delete_child (child_process *cp); |
| 106 | |
| 107 | /* ------------------------------------------------------------------------- */ |
| 108 | |
| 109 | /* Equivalent of strerror for W32 error codes. */ |
| 110 | extern char * w32_strerror (int error_no); |
| 111 | |
| 112 | /* Get long (aka "true") form of file name, if it exists. */ |
| 113 | extern BOOL w32_get_long_filename (char * name, char * buf, int size); |
| 114 | |
| 115 | /* Prepare our standard handles for proper inheritance by child processes. */ |
| 116 | extern void prepare_standard_handles (int in, int out, |
| 117 | int err, HANDLE handles[4]); |
| 118 | |
| 119 | /* Reset our standard handles to their original state. */ |
| 120 | extern void reset_standard_handles (int in, int out, |
| 121 | int err, HANDLE handles[4]); |
| 122 | |
| 123 | /* Return the string resource associated with KEY of type TYPE. */ |
| 124 | extern LPBYTE w32_get_resource (char * key, LPDWORD type); |
| 125 | |
| 126 | extern void init_ntproc (void); |
| 127 | extern void term_ntproc (void); |
| 128 | extern void globals_of_w32 (void); |
| 129 | extern void syms_of_w32term (void); |
| 130 | extern void syms_of_w32fns (void); |
| 131 | extern void globals_of_w32fns (void); |
| 132 | extern void syms_of_w32select (void); |
| 133 | extern void globals_of_w32select (void); |
| 134 | extern void term_w32select (void); |
| 135 | extern void syms_of_w32menu (void); |
| 136 | extern void globals_of_w32menu (void); |
| 137 | extern void syms_of_fontset (void); |
| 138 | |
| 139 | #endif /* EMACS_W32_H */ |
| 140 | |
| 141 | /* arch-tag: 02c36b00-312b-4c4d-a1d9-f905c5e968f0 |
| 142 | (do not change this comment) */ |