Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 1 | /* |
| 2 | / Author: Sam Rushing <rushing@nightmare.com> |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 3 | / Hacked for Unix by A.M. Kuchling <amk1@bigfoot.com> |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 4 | / $Id$ |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 5 | |
| 6 | / mmapmodule.cpp -- map a view of a file into memory |
| 7 | / |
| 8 | / todo: need permission flags, perhaps a 'chsize' analog |
| 9 | / not all functions check range yet!!! |
| 10 | / |
| 11 | / |
| 12 | / Note: This module currently only deals with 32-bit file |
| 13 | / sizes. |
| 14 | / |
| 15 | / The latest version of mmapfile is maintained by Sam at |
| 16 | / ftp://squirl.nightmare.com/pub/python/python-ext. |
| 17 | */ |
| 18 | |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 19 | #include <Python.h> |
| 20 | |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 21 | #ifndef MS_WIN32 |
| 22 | #define UNIX |
| 23 | #endif |
| 24 | |
| 25 | #ifdef MS_WIN32 |
| 26 | #include <windows.h> |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 27 | #if _MSC_VER < 1200 |
| 28 | #define INT_PTR unsigned long |
| 29 | #endif |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 30 | #endif |
| 31 | |
| 32 | #ifdef UNIX |
| 33 | #include <unistd.h> |
| 34 | #include <sys/mman.h> |
Andrew M. Kuchling | 7b9fb92 | 2000-06-17 22:41:22 +0000 | [diff] [blame] | 35 | #include <sys/stat.h> |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 36 | #endif |
| 37 | |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 38 | #include <string.h> |
| 39 | #include <sys/types.h> |
| 40 | |
| 41 | static PyObject *mmap_module_error; |
| 42 | |
| 43 | typedef struct { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 44 | PyObject_HEAD |
| 45 | char * data; |
| 46 | size_t size; |
| 47 | size_t pos; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 48 | |
| 49 | #ifdef MS_WIN32 |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 50 | HANDLE map_handle; |
Andrew M. Kuchling | 70d2742 | 2000-06-18 04:45:14 +0000 | [diff] [blame] | 51 | INT_PTR file_handle; |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 52 | char * tagname; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 53 | #endif |
| 54 | |
| 55 | #ifdef UNIX |
Andrew M. Kuchling | 7b9fb92 | 2000-06-17 22:41:22 +0000 | [diff] [blame] | 56 | int fd; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 57 | #endif |
| 58 | } mmap_object; |
| 59 | |
| 60 | static void |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 61 | mmap_object_dealloc(mmap_object *m_obj) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 62 | { |
| 63 | #ifdef MS_WIN32 |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 64 | UnmapViewOfFile (m_obj->data); |
| 65 | CloseHandle (m_obj->map_handle); |
| 66 | CloseHandle ((HANDLE)m_obj->file_handle); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 67 | #endif /* MS_WIN32 */ |
| 68 | |
| 69 | #ifdef UNIX |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 70 | if (m_obj->data!=NULL) { |
Andrew M. Kuchling | 9bc5f33 | 2000-06-18 04:25:08 +0000 | [diff] [blame] | 71 | msync(m_obj->data, m_obj->size, MS_SYNC); |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 72 | munmap(m_obj->data, m_obj->size); |
| 73 | } |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 74 | #endif /* UNIX */ |
| 75 | |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 76 | PyObject_Del(m_obj); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 77 | } |
| 78 | |
| 79 | static PyObject * |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 80 | mmap_close_method(mmap_object *self, PyObject *args) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 81 | { |
Andrew M. Kuchling | 841b9fb | 2000-06-03 20:43:43 +0000 | [diff] [blame] | 82 | if (!PyArg_ParseTuple(args, ":close")) |
Andrew M. Kuchling | 961fe17 | 2000-06-03 19:41:42 +0000 | [diff] [blame] | 83 | return NULL; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 84 | #ifdef MS_WIN32 |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 85 | UnmapViewOfFile (self->data); |
| 86 | CloseHandle (self->map_handle); |
| 87 | CloseHandle ((HANDLE)self->file_handle); |
| 88 | self->map_handle = (HANDLE) NULL; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 89 | #endif /* MS_WIN32 */ |
| 90 | |
| 91 | #ifdef UNIX |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 92 | munmap(self->data, self->size); |
| 93 | self->data = NULL; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 94 | #endif |
| 95 | |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 96 | Py_INCREF (Py_None); |
| 97 | return (Py_None); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 98 | } |
| 99 | |
| 100 | #ifdef MS_WIN32 |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 101 | #define CHECK_VALID(err) \ |
| 102 | do { \ |
| 103 | if (!self->map_handle) { \ |
| 104 | PyErr_SetString (PyExc_ValueError, "mmap closed or invalid"); \ |
| 105 | return err; \ |
| 106 | } \ |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 107 | } while (0) |
| 108 | #endif /* MS_WIN32 */ |
| 109 | |
| 110 | #ifdef UNIX |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 111 | #define CHECK_VALID(err) \ |
| 112 | do { \ |
| 113 | if (self->data == NULL) { \ |
| 114 | PyErr_SetString (PyExc_ValueError, "mmap closed or invalid"); \ |
| 115 | return err; \ |
| 116 | } \ |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 117 | } while (0) |
| 118 | #endif /* UNIX */ |
| 119 | |
| 120 | static PyObject * |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 121 | mmap_read_byte_method(mmap_object *self, |
| 122 | PyObject *args) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 123 | { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 124 | char value; |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 125 | char *where; |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 126 | CHECK_VALID(NULL); |
Andrew M. Kuchling | 841b9fb | 2000-06-03 20:43:43 +0000 | [diff] [blame] | 127 | if (!PyArg_ParseTuple(args, ":read_byte")) |
Andrew M. Kuchling | 961fe17 | 2000-06-03 19:41:42 +0000 | [diff] [blame] | 128 | return NULL; |
Andrew M. Kuchling | 70d2742 | 2000-06-18 04:45:14 +0000 | [diff] [blame] | 129 | if (self->pos < self->size) { |
Guido van Rossum | 36d4f8b | 2000-04-10 21:34:37 +0000 | [diff] [blame] | 130 | where = self->data + self->pos; |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 131 | value = (char) *(where); |
| 132 | self->pos += 1; |
| 133 | return Py_BuildValue("c", (char) *(where)); |
| 134 | } else { |
| 135 | PyErr_SetString (PyExc_ValueError, "read byte out of range"); |
| 136 | return NULL; |
| 137 | } |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 138 | } |
| 139 | |
| 140 | static PyObject * |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 141 | mmap_read_line_method(mmap_object *self, |
| 142 | PyObject *args) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 143 | { |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 144 | char *start = self->data+self->pos; |
| 145 | char *eof = self->data+self->size; |
| 146 | char *eol; |
| 147 | PyObject *result; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 148 | |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 149 | CHECK_VALID(NULL); |
Andrew M. Kuchling | 841b9fb | 2000-06-03 20:43:43 +0000 | [diff] [blame] | 150 | if (!PyArg_ParseTuple(args, ":readline")) |
Andrew M. Kuchling | 961fe17 | 2000-06-03 19:41:42 +0000 | [diff] [blame] | 151 | return NULL; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 152 | |
Fred Drake | 56a87a0 | 2000-04-04 18:17:35 +0000 | [diff] [blame] | 153 | eol = memchr(start, '\n', self->size - self->pos); |
| 154 | if (!eol) |
| 155 | eol = eof; |
| 156 | else |
| 157 | ++eol; /* we're interested in the position after the |
| 158 | newline. */ |
Andrew M. Kuchling | 70d2742 | 2000-06-18 04:45:14 +0000 | [diff] [blame] | 159 | result = PyString_FromStringAndSize(start, (eol - start)); |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 160 | self->pos += (eol - start); |
| 161 | return (result); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 162 | } |
| 163 | |
| 164 | static PyObject * |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 165 | mmap_read_method(mmap_object *self, |
| 166 | PyObject *args) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 167 | { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 168 | long num_bytes; |
| 169 | PyObject *result; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 170 | |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 171 | CHECK_VALID(NULL); |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 172 | if (!PyArg_ParseTuple(args, "l:read", &num_bytes)) |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 173 | return(NULL); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 174 | |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 175 | /* silently 'adjust' out-of-range requests */ |
| 176 | if ((self->pos + num_bytes) > self->size) { |
| 177 | num_bytes -= (self->pos+num_bytes) - self->size; |
| 178 | } |
| 179 | result = Py_BuildValue("s#", self->data+self->pos, num_bytes); |
| 180 | self->pos += num_bytes; |
| 181 | return (result); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 182 | } |
| 183 | |
| 184 | static PyObject * |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 185 | mmap_find_method(mmap_object *self, |
| 186 | PyObject *args) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 187 | { |
Andrew M. Kuchling | 70d2742 | 2000-06-18 04:45:14 +0000 | [diff] [blame] | 188 | int start = self->pos; |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 189 | char *needle; |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 190 | int len; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 191 | |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 192 | CHECK_VALID(NULL); |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 193 | if (!PyArg_ParseTuple (args, "s#|i:find", &needle, &len, &start)) { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 194 | return NULL; |
| 195 | } else { |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 196 | char *p = self->data+self->pos; |
| 197 | char *e = self->data+self->size; |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 198 | while (p < e) { |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 199 | char *s = p; |
| 200 | char *n = needle; |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 201 | while ((s<e) && (*n) && !(*s-*n)) { |
| 202 | s++, n++; |
| 203 | } |
| 204 | if (!*n) { |
| 205 | return Py_BuildValue ( |
Andrew M. Kuchling | 70d2742 | 2000-06-18 04:45:14 +0000 | [diff] [blame] | 206 | "i", |
| 207 | (int) (p - (self->data + start))); |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 208 | } |
| 209 | p++; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 210 | } |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 211 | return Py_BuildValue ("l", (long) -1); |
| 212 | } |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 213 | } |
| 214 | |
| 215 | static PyObject * |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 216 | mmap_write_method(mmap_object *self, |
| 217 | PyObject *args) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 218 | { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 219 | long length; |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 220 | char *data; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 221 | |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 222 | CHECK_VALID(NULL); |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 223 | if (!PyArg_ParseTuple (args, "s#:write", &data, &length)) |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 224 | return(NULL); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 225 | |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 226 | if ((self->pos + length) > self->size) { |
| 227 | PyErr_SetString (PyExc_ValueError, "data out of range"); |
| 228 | return NULL; |
| 229 | } |
| 230 | memcpy (self->data+self->pos, data, length); |
| 231 | self->pos = self->pos+length; |
| 232 | Py_INCREF (Py_None); |
| 233 | return (Py_None); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 234 | } |
| 235 | |
| 236 | static PyObject * |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 237 | mmap_write_byte_method(mmap_object *self, |
| 238 | PyObject *args) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 239 | { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 240 | char value; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 241 | |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 242 | CHECK_VALID(NULL); |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 243 | if (!PyArg_ParseTuple (args, "c:write_byte", &value)) |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 244 | return(NULL); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 245 | |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 246 | *(self->data+self->pos) = value; |
| 247 | self->pos += 1; |
| 248 | Py_INCREF (Py_None); |
| 249 | return (Py_None); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 250 | } |
| 251 | |
| 252 | static PyObject * |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 253 | mmap_size_method(mmap_object *self, |
| 254 | PyObject *args) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 255 | { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 256 | CHECK_VALID(NULL); |
Andrew M. Kuchling | 841b9fb | 2000-06-03 20:43:43 +0000 | [diff] [blame] | 257 | if (!PyArg_ParseTuple(args, ":size")) |
Andrew M. Kuchling | 961fe17 | 2000-06-03 19:41:42 +0000 | [diff] [blame] | 258 | return NULL; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 259 | |
| 260 | #ifdef MS_WIN32 |
Andrew M. Kuchling | 70d2742 | 2000-06-18 04:45:14 +0000 | [diff] [blame] | 261 | if (self->file_handle != (INT_PTR) -1) { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 262 | return (Py_BuildValue ( |
Fredrik Lundh | 5cccf50 | 2000-07-09 13:16:13 +0000 | [diff] [blame] | 263 | "l", (long) |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 264 | GetFileSize ((HANDLE)self->file_handle, NULL))); |
| 265 | } else { |
Fredrik Lundh | 5cccf50 | 2000-07-09 13:16:13 +0000 | [diff] [blame] | 266 | return (Py_BuildValue ("l", (long) self->size) ); |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 267 | } |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 268 | #endif /* MS_WIN32 */ |
| 269 | |
| 270 | #ifdef UNIX |
Andrew M. Kuchling | 7b9fb92 | 2000-06-17 22:41:22 +0000 | [diff] [blame] | 271 | { |
| 272 | struct stat buf; |
| 273 | if (-1 == fstat(self->fd, &buf)) { |
| 274 | PyErr_SetFromErrno(mmap_module_error); |
| 275 | return NULL; |
| 276 | } |
Fredrik Lundh | 5cccf50 | 2000-07-09 13:16:13 +0000 | [diff] [blame] | 277 | return (Py_BuildValue ("l", (long) buf.st_size) ); |
Andrew M. Kuchling | 7b9fb92 | 2000-06-17 22:41:22 +0000 | [diff] [blame] | 278 | } |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 279 | #endif /* UNIX */ |
| 280 | } |
| 281 | |
| 282 | /* This assumes that you want the entire file mapped, |
| 283 | / and when recreating the map will make the new file |
| 284 | / have the new size |
| 285 | / |
| 286 | / Is this really necessary? This could easily be done |
| 287 | / from python by just closing and re-opening with the |
| 288 | / new size? |
| 289 | */ |
| 290 | |
| 291 | static PyObject * |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 292 | mmap_resize_method(mmap_object *self, |
| 293 | PyObject *args) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 294 | { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 295 | unsigned long new_size; |
| 296 | CHECK_VALID(NULL); |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 297 | if (!PyArg_ParseTuple (args, "l:resize", &new_size)) { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 298 | return NULL; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 299 | #ifdef MS_WIN32 |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 300 | } else { |
| 301 | DWORD dwErrCode = 0; |
| 302 | /* First, unmap the file view */ |
| 303 | UnmapViewOfFile (self->data); |
| 304 | /* Close the mapping object */ |
| 305 | CloseHandle ((HANDLE)self->map_handle); |
| 306 | /* Move to the desired EOF position */ |
| 307 | SetFilePointer ((HANDLE)self->file_handle, |
| 308 | new_size, NULL, FILE_BEGIN); |
| 309 | /* Change the size of the file */ |
| 310 | SetEndOfFile ((HANDLE)self->file_handle); |
| 311 | /* Create another mapping object and remap the file view */ |
| 312 | self->map_handle = CreateFileMapping ( |
| 313 | (HANDLE) self->file_handle, |
| 314 | NULL, |
| 315 | PAGE_READWRITE, |
| 316 | 0, |
| 317 | new_size, |
| 318 | self->tagname); |
| 319 | if (self->map_handle != NULL) { |
| 320 | self->data = (char *) MapViewOfFile (self->map_handle, |
| 321 | FILE_MAP_WRITE, |
| 322 | 0, |
| 323 | 0, |
| 324 | 0); |
| 325 | if (self->data != NULL) { |
| 326 | self->size = new_size; |
| 327 | Py_INCREF (Py_None); |
| 328 | return Py_None; |
| 329 | } else { |
| 330 | dwErrCode = GetLastError(); |
| 331 | } |
| 332 | } else { |
| 333 | dwErrCode = GetLastError(); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 334 | } |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 335 | PyErr_SetFromWindowsErr(dwErrCode); |
| 336 | return (NULL); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 337 | #endif /* MS_WIN32 */ |
| 338 | |
| 339 | #ifdef UNIX |
Andrew M. Kuchling | 6fef30e | 2000-06-18 14:51:21 +0000 | [diff] [blame] | 340 | #ifndef HAVE_MREMAP |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 341 | } else { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 342 | PyErr_SetString(PyExc_SystemError, |
| 343 | "mmap: resizing not available--no mremap()"); |
| 344 | return NULL; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 345 | #else |
| 346 | } else { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 347 | void *newmap; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 348 | |
Andrew M. Kuchling | 6fef30e | 2000-06-18 14:51:21 +0000 | [diff] [blame] | 349 | #ifdef MREMAP_MAYMOVE |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 350 | newmap = mremap(self->data, self->size, new_size, MREMAP_MAYMOVE); |
Andrew M. Kuchling | 6fef30e | 2000-06-18 14:51:21 +0000 | [diff] [blame] | 351 | #else |
| 352 | newmap = mremap(self->data, self->size, new_size, 0); |
| 353 | #endif |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 354 | if (newmap == (void *)-1) |
| 355 | { |
| 356 | PyErr_SetFromErrno(mmap_module_error); |
| 357 | return NULL; |
| 358 | } |
| 359 | self->data = newmap; |
| 360 | self->size = new_size; |
| 361 | Py_INCREF(Py_None); |
| 362 | return Py_None; |
Andrew M. Kuchling | 6fef30e | 2000-06-18 14:51:21 +0000 | [diff] [blame] | 363 | #endif /* HAVE_MREMAP */ |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 364 | #endif /* UNIX */ |
| 365 | } |
| 366 | } |
| 367 | |
| 368 | static PyObject * |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 369 | mmap_tell_method(mmap_object *self, PyObject *args) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 370 | { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 371 | CHECK_VALID(NULL); |
Andrew M. Kuchling | 841b9fb | 2000-06-03 20:43:43 +0000 | [diff] [blame] | 372 | if (!PyArg_ParseTuple(args, ":tell")) |
Andrew M. Kuchling | 961fe17 | 2000-06-03 19:41:42 +0000 | [diff] [blame] | 373 | return NULL; |
Fredrik Lundh | 5cccf50 | 2000-07-09 13:16:13 +0000 | [diff] [blame] | 374 | return (Py_BuildValue ("l", (long) self->pos) ); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 375 | } |
| 376 | |
| 377 | static PyObject * |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 378 | mmap_flush_method(mmap_object *self, PyObject *args) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 379 | { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 380 | size_t offset = 0; |
| 381 | size_t size = self->size; |
| 382 | CHECK_VALID(NULL); |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 383 | if (!PyArg_ParseTuple (args, "|ll:flush", &offset, &size)) { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 384 | return NULL; |
| 385 | } else if ((offset + size) > self->size) { |
| 386 | PyErr_SetString (PyExc_ValueError, |
| 387 | "flush values out of range"); |
| 388 | return NULL; |
| 389 | } else { |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 390 | #ifdef MS_WIN32 |
Fredrik Lundh | 5cccf50 | 2000-07-09 13:16:13 +0000 | [diff] [blame] | 391 | return (Py_BuildValue("l", (long) |
| 392 | FlushViewOfFile(self->data+offset, size))); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 393 | #endif /* MS_WIN32 */ |
| 394 | #ifdef UNIX |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 395 | /* XXX semantics of return value? */ |
| 396 | /* XXX flags for msync? */ |
| 397 | if (-1 == msync(self->data + offset, size, |
Andrew M. Kuchling | 9bc5f33 | 2000-06-18 04:25:08 +0000 | [diff] [blame] | 398 | MS_SYNC)) |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 399 | { |
| 400 | PyErr_SetFromErrno(mmap_module_error); |
| 401 | return NULL; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 402 | } |
Fredrik Lundh | 5cccf50 | 2000-07-09 13:16:13 +0000 | [diff] [blame] | 403 | return Py_BuildValue ("l", (long) 0); |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 404 | #endif /* UNIX */ |
| 405 | } |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 406 | } |
| 407 | |
| 408 | static PyObject * |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 409 | mmap_seek_method(mmap_object *self, PyObject *args) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 410 | { |
Andrew M. Kuchling | 70d2742 | 2000-06-18 04:45:14 +0000 | [diff] [blame] | 411 | int dist; |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 412 | int how=0; |
| 413 | CHECK_VALID(NULL); |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 414 | if (!PyArg_ParseTuple (args, "i|i:seek", &dist, &how)) { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 415 | return(NULL); |
| 416 | } else { |
Andrew M. Kuchling | 70d2742 | 2000-06-18 04:45:14 +0000 | [diff] [blame] | 417 | size_t where; |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 418 | switch (how) { |
Andrew M. Kuchling | 70d2742 | 2000-06-18 04:45:14 +0000 | [diff] [blame] | 419 | case 0: /* relative to start */ |
| 420 | if (dist < 0) |
| 421 | goto onoutofrange; |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 422 | where = dist; |
| 423 | break; |
Andrew M. Kuchling | 70d2742 | 2000-06-18 04:45:14 +0000 | [diff] [blame] | 424 | case 1: /* relative to current position */ |
| 425 | if ((int)self->pos + dist < 0) |
| 426 | goto onoutofrange; |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 427 | where = self->pos + dist; |
| 428 | break; |
Andrew M. Kuchling | 70d2742 | 2000-06-18 04:45:14 +0000 | [diff] [blame] | 429 | case 2: /* relative to end */ |
| 430 | if ((int)self->size + dist < 0) |
| 431 | goto onoutofrange; |
| 432 | where = self->size + dist; |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 433 | break; |
| 434 | default: |
| 435 | PyErr_SetString (PyExc_ValueError, |
| 436 | "unknown seek type"); |
| 437 | return NULL; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 438 | } |
Andrew M. Kuchling | 70d2742 | 2000-06-18 04:45:14 +0000 | [diff] [blame] | 439 | if (where > self->size) |
| 440 | goto onoutofrange; |
| 441 | self->pos = where; |
| 442 | Py_INCREF (Py_None); |
| 443 | return (Py_None); |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 444 | } |
Andrew M. Kuchling | 70d2742 | 2000-06-18 04:45:14 +0000 | [diff] [blame] | 445 | |
| 446 | onoutofrange: |
| 447 | PyErr_SetString (PyExc_ValueError, "seek out of range"); |
| 448 | return NULL; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 449 | } |
| 450 | |
| 451 | static PyObject * |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 452 | mmap_move_method(mmap_object *self, PyObject *args) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 453 | { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 454 | unsigned long dest, src, count; |
| 455 | CHECK_VALID(NULL); |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 456 | if (!PyArg_ParseTuple (args, "iii:move", &dest, &src, &count)) { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 457 | return NULL; |
| 458 | } else { |
| 459 | /* bounds check the values */ |
| 460 | if (/* end of source after end of data?? */ |
| 461 | ((src+count) > self->size) |
| 462 | /* dest will fit? */ |
| 463 | || (dest+count > self->size)) { |
| 464 | PyErr_SetString (PyExc_ValueError, |
| 465 | "source or destination out of range"); |
| 466 | return NULL; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 467 | } else { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 468 | memmove (self->data+dest, self->data+src, count); |
| 469 | Py_INCREF (Py_None); |
| 470 | return Py_None; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 471 | } |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 472 | } |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 473 | } |
| 474 | |
| 475 | static struct PyMethodDef mmap_object_methods[] = { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 476 | {"close", (PyCFunction) mmap_close_method, 1}, |
| 477 | {"find", (PyCFunction) mmap_find_method, 1}, |
| 478 | {"flush", (PyCFunction) mmap_flush_method, 1}, |
| 479 | {"move", (PyCFunction) mmap_move_method, 1}, |
| 480 | {"read", (PyCFunction) mmap_read_method, 1}, |
| 481 | {"read_byte", (PyCFunction) mmap_read_byte_method, 1}, |
| 482 | {"readline", (PyCFunction) mmap_read_line_method, 1}, |
| 483 | {"resize", (PyCFunction) mmap_resize_method, 1}, |
| 484 | {"seek", (PyCFunction) mmap_seek_method, 1}, |
| 485 | {"size", (PyCFunction) mmap_size_method, 1}, |
| 486 | {"tell", (PyCFunction) mmap_tell_method, 1}, |
| 487 | {"write", (PyCFunction) mmap_write_method, 1}, |
| 488 | {"write_byte", (PyCFunction) mmap_write_byte_method, 1}, |
| 489 | {NULL, NULL} /* sentinel */ |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 490 | }; |
| 491 | |
| 492 | /* Functions for treating an mmap'ed file as a buffer */ |
| 493 | |
| 494 | static int |
Andrew M. Kuchling | 961fe17 | 2000-06-03 19:41:42 +0000 | [diff] [blame] | 495 | mmap_buffer_getreadbuf(mmap_object *self, int index, const void **ptr) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 496 | { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 497 | CHECK_VALID(-1); |
| 498 | if ( index != 0 ) { |
| 499 | PyErr_SetString(PyExc_SystemError, |
| 500 | "Accessing non-existent mmap segment"); |
| 501 | return -1; |
| 502 | } |
| 503 | *ptr = self->data; |
| 504 | return self->size; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 505 | } |
| 506 | |
| 507 | static int |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 508 | mmap_buffer_getwritebuf(mmap_object *self, int index, const void **ptr) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 509 | { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 510 | CHECK_VALID(-1); |
| 511 | if ( index != 0 ) { |
| 512 | PyErr_SetString(PyExc_SystemError, |
| 513 | "Accessing non-existent mmap segment"); |
| 514 | return -1; |
| 515 | } |
| 516 | *ptr = self->data; |
| 517 | return self->size; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 518 | } |
| 519 | |
| 520 | static int |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 521 | mmap_buffer_getsegcount(mmap_object *self, int *lenp) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 522 | { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 523 | CHECK_VALID(-1); |
| 524 | if (lenp) |
| 525 | *lenp = self->size; |
| 526 | return 1; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 527 | } |
| 528 | |
| 529 | static int |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 530 | mmap_buffer_getcharbuffer(mmap_object *self, int index, const void **ptr) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 531 | { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 532 | if ( index != 0 ) { |
| 533 | PyErr_SetString(PyExc_SystemError, |
| 534 | "accessing non-existent buffer segment"); |
| 535 | return -1; |
| 536 | } |
| 537 | *ptr = (const char *)self->data; |
| 538 | return self->size; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 539 | } |
| 540 | |
| 541 | static PyObject * |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 542 | mmap_object_getattr(mmap_object *self, char *name) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 543 | { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 544 | return Py_FindMethod (mmap_object_methods, (PyObject *)self, name); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 545 | } |
| 546 | |
| 547 | static int |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 548 | mmap_length(mmap_object *self) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 549 | { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 550 | CHECK_VALID(-1); |
| 551 | return self->size; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 552 | } |
| 553 | |
| 554 | static PyObject * |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 555 | mmap_item(mmap_object *self, int i) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 556 | { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 557 | CHECK_VALID(NULL); |
Guido van Rossum | ce8e1dc | 2000-07-01 00:51:51 +0000 | [diff] [blame] | 558 | if (i < 0 || (size_t)i >= self->size) { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 559 | PyErr_SetString(PyExc_IndexError, "mmap index out of range"); |
| 560 | return NULL; |
| 561 | } |
| 562 | return PyString_FromStringAndSize(self->data + i, 1); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 563 | } |
| 564 | |
| 565 | static PyObject * |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 566 | mmap_slice(mmap_object *self, int ilow, int ihigh) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 567 | { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 568 | CHECK_VALID(NULL); |
| 569 | if (ilow < 0) |
| 570 | ilow = 0; |
Guido van Rossum | ce8e1dc | 2000-07-01 00:51:51 +0000 | [diff] [blame] | 571 | else if ((size_t)ilow > self->size) |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 572 | ilow = self->size; |
| 573 | if (ihigh < 0) |
| 574 | ihigh = 0; |
| 575 | if (ihigh < ilow) |
| 576 | ihigh = ilow; |
Guido van Rossum | ce8e1dc | 2000-07-01 00:51:51 +0000 | [diff] [blame] | 577 | else if ((size_t)ihigh > self->size) |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 578 | ihigh = self->size; |
| 579 | |
| 580 | return PyString_FromStringAndSize(self->data + ilow, ihigh-ilow); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 581 | } |
| 582 | |
| 583 | static PyObject * |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 584 | mmap_concat(mmap_object *self, PyObject *bb) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 585 | { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 586 | CHECK_VALID(NULL); |
| 587 | PyErr_SetString(PyExc_SystemError, |
| 588 | "mmaps don't support concatenation"); |
| 589 | return NULL; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 590 | } |
| 591 | |
| 592 | static PyObject * |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 593 | mmap_repeat(mmap_object *self, int n) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 594 | { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 595 | CHECK_VALID(NULL); |
| 596 | PyErr_SetString(PyExc_SystemError, |
| 597 | "mmaps don't support repeat operation"); |
| 598 | return NULL; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 599 | } |
| 600 | |
| 601 | static int |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 602 | mmap_ass_slice(mmap_object *self, int ilow, int ihigh, PyObject *v) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 603 | { |
Guido van Rossum | 36d4f8b | 2000-04-10 21:34:37 +0000 | [diff] [blame] | 604 | const char *buf; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 605 | |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 606 | CHECK_VALID(-1); |
| 607 | if (ilow < 0) |
| 608 | ilow = 0; |
Guido van Rossum | ce8e1dc | 2000-07-01 00:51:51 +0000 | [diff] [blame] | 609 | else if ((size_t)ilow > self->size) |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 610 | ilow = self->size; |
| 611 | if (ihigh < 0) |
| 612 | ihigh = 0; |
| 613 | if (ihigh < ilow) |
| 614 | ihigh = ilow; |
Guido van Rossum | ce8e1dc | 2000-07-01 00:51:51 +0000 | [diff] [blame] | 615 | else if ((size_t)ihigh > self->size) |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 616 | ihigh = self->size; |
| 617 | |
| 618 | if (! (PyString_Check(v)) ) { |
| 619 | PyErr_SetString(PyExc_IndexError, |
| 620 | "mmap slice assignment must be a string"); |
| 621 | return -1; |
| 622 | } |
| 623 | if ( PyString_Size(v) != (ihigh - ilow) ) { |
| 624 | PyErr_SetString(PyExc_IndexError, |
| 625 | "mmap slice assignment is wrong size"); |
| 626 | return -1; |
| 627 | } |
| 628 | buf = PyString_AsString(v); |
| 629 | memcpy(self->data + ilow, buf, ihigh-ilow); |
| 630 | return 0; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 631 | } |
| 632 | |
| 633 | static int |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 634 | mmap_ass_item(mmap_object *self, int i, PyObject *v) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 635 | { |
Guido van Rossum | 36d4f8b | 2000-04-10 21:34:37 +0000 | [diff] [blame] | 636 | const char *buf; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 637 | |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 638 | CHECK_VALID(-1); |
Guido van Rossum | ce8e1dc | 2000-07-01 00:51:51 +0000 | [diff] [blame] | 639 | if (i < 0 || (size_t)i >= self->size) { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 640 | PyErr_SetString(PyExc_IndexError, "mmap index out of range"); |
| 641 | return -1; |
| 642 | } |
| 643 | if (! (PyString_Check(v) && PyString_Size(v)==1) ) { |
| 644 | PyErr_SetString(PyExc_IndexError, |
| 645 | "mmap assignment must be single-character string"); |
| 646 | return -1; |
| 647 | } |
| 648 | buf = PyString_AsString(v); |
| 649 | self->data[i] = buf[0]; |
| 650 | return 0; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 651 | } |
| 652 | |
| 653 | static PySequenceMethods mmap_as_sequence = { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 654 | (inquiry)mmap_length, /*sq_length*/ |
| 655 | (binaryfunc)mmap_concat, /*sq_concat*/ |
| 656 | (intargfunc)mmap_repeat, /*sq_repeat*/ |
| 657 | (intargfunc)mmap_item, /*sq_item*/ |
| 658 | (intintargfunc)mmap_slice, /*sq_slice*/ |
| 659 | (intobjargproc)mmap_ass_item, /*sq_ass_item*/ |
| 660 | (intintobjargproc)mmap_ass_slice, /*sq_ass_slice*/ |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 661 | }; |
| 662 | |
| 663 | static PyBufferProcs mmap_as_buffer = { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 664 | (getreadbufferproc)mmap_buffer_getreadbuf, |
| 665 | (getwritebufferproc)mmap_buffer_getwritebuf, |
| 666 | (getsegcountproc)mmap_buffer_getsegcount, |
| 667 | (getcharbufferproc)mmap_buffer_getcharbuffer, |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 668 | }; |
| 669 | |
| 670 | static PyTypeObject mmap_object_type = { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 671 | PyObject_HEAD_INIT(0) /* patched in module init */ |
| 672 | 0, /* ob_size */ |
| 673 | "mmap", /* tp_name */ |
| 674 | sizeof(mmap_object), /* tp_size */ |
| 675 | 0, /* tp_itemsize */ |
| 676 | /* methods */ |
| 677 | (destructor) mmap_object_dealloc, /* tp_dealloc */ |
| 678 | 0, /* tp_print */ |
| 679 | (getattrfunc) mmap_object_getattr, /* tp_getattr */ |
| 680 | 0, /* tp_setattr */ |
| 681 | 0, /* tp_compare */ |
| 682 | 0, /* tp_repr */ |
| 683 | 0, /* tp_as_number */ |
| 684 | &mmap_as_sequence, /*tp_as_sequence*/ |
| 685 | 0, /*tp_as_mapping*/ |
| 686 | 0, /*tp_hash*/ |
| 687 | 0, /*tp_call*/ |
| 688 | 0, /*tp_str*/ |
| 689 | 0, /*tp_getattro*/ |
| 690 | 0, /*tp_setattro*/ |
| 691 | &mmap_as_buffer, /*tp_as_buffer*/ |
| 692 | Py_TPFLAGS_HAVE_GETCHARBUFFER, /*tp_flags*/ |
| 693 | 0, /*tp_doc*/ |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 694 | }; |
| 695 | |
Andrew M. Kuchling | 70d2742 | 2000-06-18 04:45:14 +0000 | [diff] [blame] | 696 | |
| 697 | /* extract the map size from the given PyObject |
| 698 | |
| 699 | The map size is restricted to [0, INT_MAX] because this is the current |
| 700 | Python limitation on object sizes. Although the mmap object *could* handle |
| 701 | a larger map size, there is no point because all the useful operations |
| 702 | (len(), slicing(), sequence indexing) are limited by a C int. |
| 703 | |
Thomas Wouters | 7e47402 | 2000-07-16 12:04:32 +0000 | [diff] [blame^] | 704 | Returns -1 on error, with an appropriate Python exception raised. On |
Andrew M. Kuchling | 70d2742 | 2000-06-18 04:45:14 +0000 | [diff] [blame] | 705 | success, the map size is returned. */ |
| 706 | static int |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 707 | _GetMapSize(PyObject *o) |
Andrew M. Kuchling | 70d2742 | 2000-06-18 04:45:14 +0000 | [diff] [blame] | 708 | { |
| 709 | if (PyInt_Check(o)) { |
| 710 | long i = PyInt_AsLong(o); |
| 711 | if (PyErr_Occurred()) |
| 712 | return -1; |
| 713 | if (i < 0) |
| 714 | goto onnegoverflow; |
| 715 | if (i > INT_MAX) |
| 716 | goto onposoverflow; |
| 717 | return (int)i; |
| 718 | } |
| 719 | else if (PyLong_Check(o)) { |
| 720 | long i = PyLong_AsLong(o); |
| 721 | if (PyErr_Occurred()) { |
| 722 | /* yes negative overflow is mistaken for positive overflow |
| 723 | but not worth the trouble to check sign of 'i' */ |
| 724 | if (PyErr_ExceptionMatches(PyExc_OverflowError)) |
| 725 | goto onposoverflow; |
| 726 | else |
| 727 | return -1; |
| 728 | } |
| 729 | if (i < 0) |
| 730 | goto onnegoverflow; |
| 731 | if (i > INT_MAX) |
| 732 | goto onposoverflow; |
| 733 | return (int)i; |
| 734 | } |
| 735 | else { |
| 736 | PyErr_SetString(PyExc_TypeError, |
| 737 | "map size must be an integral value"); |
| 738 | return -1; |
| 739 | } |
| 740 | |
| 741 | onnegoverflow: |
| 742 | PyErr_SetString(PyExc_OverflowError, |
| 743 | "memory mapped size must be positive"); |
| 744 | return -1; |
| 745 | |
| 746 | onposoverflow: |
| 747 | PyErr_SetString(PyExc_OverflowError, |
| 748 | "memory mapped size is too large (limited by C int)"); |
| 749 | return -1; |
| 750 | } |
| 751 | |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 752 | #ifdef UNIX |
| 753 | static PyObject * |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 754 | new_mmap_object(PyObject *self, PyObject *args, PyObject *kwdict) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 755 | { |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 756 | mmap_object *m_obj; |
Andrew M. Kuchling | 70d2742 | 2000-06-18 04:45:14 +0000 | [diff] [blame] | 757 | PyObject *map_size_obj = NULL; |
| 758 | int map_size; |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 759 | int fd, flags = MAP_SHARED, prot = PROT_WRITE | PROT_READ; |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 760 | char *keywords[] = {"file", "size", "flags", "prot", NULL}; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 761 | |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 762 | if (!PyArg_ParseTupleAndKeywords(args, kwdict, |
Andrew M. Kuchling | 70d2742 | 2000-06-18 04:45:14 +0000 | [diff] [blame] | 763 | "iO|ii", keywords, |
| 764 | &fd, &map_size_obj, &flags, &prot) |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 765 | ) |
| 766 | return NULL; |
Andrew M. Kuchling | 70d2742 | 2000-06-18 04:45:14 +0000 | [diff] [blame] | 767 | map_size = _GetMapSize(map_size_obj); |
| 768 | if (map_size < 0) |
| 769 | return NULL; |
| 770 | |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 771 | m_obj = PyObject_New (mmap_object, &mmap_object_type); |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 772 | if (m_obj == NULL) {return NULL;} |
| 773 | m_obj->size = (size_t) map_size; |
| 774 | m_obj->pos = (size_t) 0; |
Andrew M. Kuchling | 7b9fb92 | 2000-06-17 22:41:22 +0000 | [diff] [blame] | 775 | m_obj->fd = fd; |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 776 | m_obj->data = mmap(NULL, map_size, |
| 777 | prot, flags, |
| 778 | fd, 0); |
| 779 | if (m_obj->data == (void *)-1) |
| 780 | { |
| 781 | Py_DECREF(m_obj); |
| 782 | PyErr_SetFromErrno(mmap_module_error); |
| 783 | return NULL; |
| 784 | } |
| 785 | return (PyObject *)m_obj; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 786 | } |
| 787 | #endif /* UNIX */ |
| 788 | |
| 789 | #ifdef MS_WIN32 |
| 790 | static PyObject * |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 791 | new_mmap_object(PyObject *self, PyObject *args) |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 792 | { |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 793 | mmap_object *m_obj; |
Andrew M. Kuchling | 70d2742 | 2000-06-18 04:45:14 +0000 | [diff] [blame] | 794 | PyObject *map_size_obj = NULL; |
| 795 | int map_size; |
Fredrik Lundh | 54cf3dc | 2000-07-08 22:05:01 +0000 | [diff] [blame] | 796 | char *tagname = ""; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 797 | |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 798 | DWORD dwErr = 0; |
| 799 | int fileno; |
Andrew M. Kuchling | 70d2742 | 2000-06-18 04:45:14 +0000 | [diff] [blame] | 800 | INT_PTR fh = 0; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 801 | |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 802 | /* Patch the object type */ |
| 803 | mmap_object_type.ob_type = &PyType_Type; |
| 804 | |
| 805 | if (!PyArg_ParseTuple(args, |
Andrew M. Kuchling | 70d2742 | 2000-06-18 04:45:14 +0000 | [diff] [blame] | 806 | "iO|z", |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 807 | &fileno, |
Andrew M. Kuchling | 70d2742 | 2000-06-18 04:45:14 +0000 | [diff] [blame] | 808 | &map_size_obj, |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 809 | &tagname) |
| 810 | ) |
| 811 | return NULL; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 812 | |
Andrew M. Kuchling | 70d2742 | 2000-06-18 04:45:14 +0000 | [diff] [blame] | 813 | map_size = _GetMapSize(map_size_obj); |
| 814 | if (map_size < 0) |
| 815 | return NULL; |
| 816 | |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 817 | /* if an actual filename has been specified */ |
| 818 | if (fileno != 0) { |
| 819 | fh = _get_osfhandle(fileno); |
| 820 | if (fh==-1) { |
| 821 | PyErr_SetFromErrno(mmap_module_error); |
| 822 | return NULL; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 823 | } |
Fred Drake | 1ef4e2d | 2000-04-05 14:15:31 +0000 | [diff] [blame] | 824 | /* Win9x appears to need us seeked to zero */ |
| 825 | fseek(&_iob[fileno], 0, SEEK_SET); |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 826 | } |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 827 | |
Guido van Rossum | b18618d | 2000-05-03 23:44:39 +0000 | [diff] [blame] | 828 | m_obj = PyObject_New (mmap_object, &mmap_object_type); |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 829 | |
| 830 | if (fh) { |
| 831 | m_obj->file_handle = fh; |
| 832 | if (!map_size) { |
| 833 | m_obj->size = GetFileSize ((HANDLE)fh, NULL); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 834 | } else { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 835 | m_obj->size = map_size; |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 836 | } |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 837 | } |
| 838 | else { |
Andrew M. Kuchling | 70d2742 | 2000-06-18 04:45:14 +0000 | [diff] [blame] | 839 | m_obj->file_handle = (INT_PTR) -1; |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 840 | m_obj->size = map_size; |
| 841 | } |
| 842 | |
| 843 | /* set the initial position */ |
| 844 | m_obj->pos = (size_t) 0; |
| 845 | |
| 846 | m_obj->map_handle = CreateFileMapping ((HANDLE) m_obj->file_handle, |
| 847 | NULL, |
| 848 | PAGE_READWRITE, |
| 849 | 0, |
| 850 | m_obj->size, |
| 851 | tagname); |
| 852 | if (m_obj->map_handle != NULL) { |
| 853 | m_obj->data = (char *) MapViewOfFile (m_obj->map_handle, |
| 854 | FILE_MAP_WRITE, |
| 855 | 0, |
| 856 | 0, |
| 857 | 0); |
| 858 | if (m_obj->data != NULL) { |
| 859 | return ((PyObject *) m_obj); |
| 860 | } else { |
| 861 | dwErr = GetLastError(); |
| 862 | } |
| 863 | } else { |
| 864 | dwErr = GetLastError(); |
| 865 | } |
| 866 | PyErr_SetFromWindowsErr(dwErr); |
| 867 | return (NULL); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 868 | } |
| 869 | #endif /* MS_WIN32 */ |
| 870 | |
| 871 | /* List of functions exported by this module */ |
| 872 | static struct PyMethodDef mmap_functions[] = { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 873 | {"mmap", (PyCFunction) new_mmap_object, |
| 874 | METH_VARARGS|METH_KEYWORDS}, |
| 875 | {NULL, NULL} /* Sentinel */ |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 876 | }; |
| 877 | |
| 878 | #ifdef MS_WIN32 |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 879 | __declspec(dllexport) void |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 880 | #endif /* MS_WIN32 */ |
| 881 | #ifdef UNIX |
| 882 | extern void |
| 883 | #endif |
| 884 | |
| 885 | initmmap(void) |
| 886 | { |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 887 | PyObject *dict, *module; |
| 888 | module = Py_InitModule ("mmap", mmap_functions); |
| 889 | dict = PyModule_GetDict (module); |
| 890 | mmap_module_error = PyExc_EnvironmentError; |
| 891 | Py_INCREF(mmap_module_error); |
| 892 | PyDict_SetItemString (dict, "error", mmap_module_error); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 893 | #ifdef PROT_EXEC |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 894 | PyDict_SetItemString (dict, "PROT_EXEC", PyInt_FromLong(PROT_EXEC) ); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 895 | #endif |
| 896 | #ifdef PROT_READ |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 897 | PyDict_SetItemString (dict, "PROT_READ", PyInt_FromLong(PROT_READ) ); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 898 | #endif |
| 899 | #ifdef PROT_WRITE |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 900 | PyDict_SetItemString (dict, "PROT_WRITE", PyInt_FromLong(PROT_WRITE) ); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 901 | #endif |
| 902 | |
| 903 | #ifdef MAP_SHARED |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 904 | PyDict_SetItemString (dict, "MAP_SHARED", PyInt_FromLong(MAP_SHARED) ); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 905 | #endif |
| 906 | #ifdef MAP_PRIVATE |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 907 | PyDict_SetItemString (dict, "MAP_PRIVATE", |
| 908 | PyInt_FromLong(MAP_PRIVATE) ); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 909 | #endif |
| 910 | #ifdef MAP_DENYWRITE |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 911 | PyDict_SetItemString (dict, "MAP_DENYWRITE", |
| 912 | PyInt_FromLong(MAP_DENYWRITE) ); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 913 | #endif |
| 914 | #ifdef MAP_EXECUTABLE |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 915 | PyDict_SetItemString (dict, "MAP_EXECUTABLE", |
| 916 | PyInt_FromLong(MAP_EXECUTABLE) ); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 917 | #endif |
| 918 | #ifdef MAP_ANON |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 919 | PyDict_SetItemString (dict, "MAP_ANON", PyInt_FromLong(MAP_ANON) ); |
| 920 | PyDict_SetItemString (dict, "MAP_ANONYMOUS", |
| 921 | PyInt_FromLong(MAP_ANON) ); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 922 | #endif |
| 923 | |
| 924 | #ifdef UNIX |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 925 | PyDict_SetItemString (dict, "PAGESIZE", |
| 926 | PyInt_FromLong( (long)getpagesize() ) ); |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 927 | #endif |
Guido van Rossum | 09fdf07 | 2000-03-31 01:17:07 +0000 | [diff] [blame] | 928 | #ifdef MS_WIN32 |
| 929 | { |
| 930 | SYSTEM_INFO si; |
| 931 | GetSystemInfo(&si); |
| 932 | PyDict_SetItemString (dict, "PAGESIZE", |
| 933 | PyInt_FromLong( si.dwPageSize ) ); |
| 934 | } |
| 935 | #endif /* MS_WIN32 */ |
Andrew M. Kuchling | 1ed7d2d | 2000-03-30 21:14:30 +0000 | [diff] [blame] | 936 | |
| 937 | } |
Andrew M. Kuchling | 961fe17 | 2000-06-03 19:41:42 +0000 | [diff] [blame] | 938 | |