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Viewing changes to src/gsmemlok.c

  • Committer: Bazaar Package Importer
  • Author(s): Till Kamppeter
  • Date: 2009-01-20 16:40:45 UTC
  • mfrom: (1.1.10 upstream)
  • Revision ID: james.westby@ubuntu.com-20090120164045-lnfhi0n30o5lwhwa
Tags: 8.64.dfsg.1~svn9377-0ubuntu1
https://launchpad.net/bugs/317810
https://launchpad.net/bugs/314439
https://launchpad.net/bugs/314018
* New upstream release (SVN rev 9377)
   o Fixes many bugs concerning PDF rendering, to make the PDF printing
     workflow correctly working.
   o Fixes long-standing bugs in many drivers, like input paper tray and
     duplex options not working for the built-in PCL 4, 5, 5c, 5e, and
     6/XL drivers, PDF input not working for bjc600, bjc800, and cups
     output devices, several options not working and uninitialized
     memory with cups output device.
   o Merged nearly all patches of the Ubuntu and Debian packages upstream.
   o Fixes LP: #317810, LP: #314439, LP: #314018.
* debian/patches/03_libpaper_support.dpatch,
  debian/patches/11_gs-cjk_font_glyph_handling_fix.dpatch,
  debian/patches/12_gs-cjk_vertical_writing_metrics_fix.dpatch,
  debian/patches/13_gs-cjk_cjkps_examples.dpatch,
  debian/patches/20_bbox_segv_fix.dpatch,
  debian/patches/21_brother_7x0_gdi_fix.dpatch,
  debian/patches/22_epsn_margin_workaround.dpatch,
  debian/patches/24_gs_man_fix.dpatch,
  debian/patches/25_toolbin_insecure_tmp_usage_fix.dpatch,
  debian/patches/26_assorted_script_fixes.dpatch,
  debian/patches/29_gs_css_fix.dpatch,
  debian/patches/30_ps2pdf_man_improvement.dpatch,
  debian/patches/31_fix-gc-sigbus.dpatch,
  debian/patches/34_ftbfs-on-hurd-fix.dpatch,
  debian/patches/35_disable_libcairo.dpatch,
  debian/patches/38_pxl-duplex.dpatch,
  debian/patches/39_pxl-resolution.dpatch,
  debian/patches/42_gs-init-ps-delaybind-fix.dpatch,
  debian/patches/45_bjc600-bjc800-pdf-input.dpatch,
  debian/patches/48_cups-output-device-pdf-duplex-uninitialized-memory-fix.dpatch,
  debian/patches/50_lips4-floating-point-exception.dpatch,
  debian/patches/52_cups-device-logging.dpatch,
  debian/patches/55_pcl-input-slot-fix.dpatch,
  debian/patches/57_pxl-input-slot-fix.dpatch,
  debian/patches/60_pxl-cups-driver-pdf.dpatch,
  debian/patches/62_onebitcmyk-pdf.dpatch,
  debian/patches/65_too-big-temp-files-1.dpatch,
  debian/patches/67_too-big-temp-files-2.dpatch,
  debian/patches/70_take-into-account-data-in-stream-buffer-before-refill.dpatch:
  Removed, applied upstream.
* debian/patches/01_docdir_fix_for_debian.dpatch,
  debian/patches/02_gs_man_fix_debian.dpatch,
  debian/patches/01_docdir-fix-for-debian.dpatch,
  debian/patches/02_docdir-fix-for-debian.dpatch: Renamed patches to
  make merging with Debian easier.
* debian/patches/32_improve-handling-of-media-size-changes-from-gv.dpatch, 
  debian/patches/33_bad-params-to-xinitimage-on-large-bitmaps.dpatch:
  regenerated for new source directory structure.
* debian/rules: Corrected paths to remove cidfmap (it is in Resource/Init/
  in GS 8.64) and to install headers (source paths are psi/ and base/ now).
* debian/rules: Remove all fontmaps, as DeFoMa replaces them.
* debian/local/pdftoraster/pdftoraster.c,
  debian/local/pdftoraster/pdftoraster.convs, debian/rules: Removed
  added pdftoraster filter and use the one which comes with Ghostscript.
* debian/ghostscript.links: s/8.63/8.64/

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Lines of Context:
src/gsmemlok.c
1
 
/* Copyright (C) 2001-2006 Artifex Software, Inc.
2
 
   All Rights Reserved.
3
 
  
4
 
   This software is provided AS-IS with no warranty, either express or
5
 
   implied.
6
 
 
7
 
   This software is distributed under license and may not be copied, modified
8
 
   or distributed except as expressly authorized under the terms of that
9
 
   license.  Refer to licensing information at http://www.artifex.com/
10
 
   or contact Artifex Software, Inc.,  7 Mt. Lassen Drive - Suite A-134,
11
 
   San Rafael, CA  94903, U.S.A., +1(415)492-9861, for further information.
12
 
*/
13
 
 
14
 
/* $Id: gsmemlok.c 8721 2008-05-09 02:18:14Z ray $ */
15
 
/* Monitor-locked heap memory allocator */
16
 
 
17
 
/* Initial version 2/1/98 by John Desrosiers (soho@crl.com) */
18
 
/* Revised 8/6/98 by L. Peter Deutsch (ghost@aladdin.com) for changes */
19
 
/*   in memory manager API */
20
 
/* Edited 3/23/1999 by L. Peter Deutsch to remove compiler warnings. */
21
 
 
22
 
#include "gx.h"
23
 
#include "gsmemlok.h"
24
 
#include "gserrors.h"
25
 
 
26
 
/* Raw memory procedures */
27
 
static gs_memory_proc_alloc_bytes(gs_locked_alloc_bytes_immovable);
28
 
static gs_memory_proc_resize_object(gs_locked_resize_object);
29
 
static gs_memory_proc_free_object(gs_locked_free_object);
30
 
static gs_memory_proc_stable(gs_locked_stable);
31
 
static gs_memory_proc_status(gs_locked_status);
32
 
static gs_memory_proc_free_all(gs_locked_free_all);
33
 
static gs_memory_proc_consolidate_free(gs_locked_consolidate_free);
34
 
 
35
 
/* Object memory procedures */
36
 
static gs_memory_proc_alloc_bytes(gs_locked_alloc_bytes);
37
 
static gs_memory_proc_alloc_struct(gs_locked_alloc_struct);
38
 
static gs_memory_proc_alloc_struct(gs_locked_alloc_struct_immovable);
39
 
static gs_memory_proc_alloc_byte_array(gs_locked_alloc_byte_array);
40
 
static gs_memory_proc_alloc_byte_array(gs_locked_alloc_byte_array_immovable);
41
 
static gs_memory_proc_alloc_struct_array(gs_locked_alloc_struct_array);
42
 
static gs_memory_proc_alloc_struct_array(gs_locked_alloc_struct_array_immovable);
43
 
static gs_memory_proc_object_size(gs_locked_object_size);
44
 
static gs_memory_proc_object_type(gs_locked_object_type);
45
 
static gs_memory_proc_alloc_string(gs_locked_alloc_string);
46
 
static gs_memory_proc_alloc_string(gs_locked_alloc_string_immovable);
47
 
static gs_memory_proc_resize_string(gs_locked_resize_string);
48
 
static gs_memory_proc_free_string(gs_locked_free_string);
49
 
static gs_memory_proc_register_root(gs_locked_register_root);
50
 
static gs_memory_proc_unregister_root(gs_locked_unregister_root);
51
 
static gs_memory_proc_enable_free(gs_locked_enable_free);
52
 
static const gs_memory_procs_t locked_procs =
53
 
{
54
 
    /* Raw memory procedures */
55
 
    gs_locked_alloc_bytes_immovable,
56
 
    gs_locked_resize_object,
57
 
    gs_locked_free_object,
58
 
    gs_locked_stable,
59
 
    gs_locked_status,
60
 
    gs_locked_free_all,
61
 
    gs_locked_consolidate_free,
62
 
    /* Object memory procedures */
63
 
    gs_locked_alloc_bytes,
64
 
    gs_locked_alloc_struct,
65
 
    gs_locked_alloc_struct_immovable,
66
 
    gs_locked_alloc_byte_array,
67
 
    gs_locked_alloc_byte_array_immovable,
68
 
    gs_locked_alloc_struct_array,
69
 
    gs_locked_alloc_struct_array_immovable,
70
 
    gs_locked_object_size,
71
 
    gs_locked_object_type,
72
 
    gs_locked_alloc_string,
73
 
    gs_locked_alloc_string_immovable,
74
 
    gs_locked_resize_string,
75
 
    gs_locked_free_string,
76
 
    gs_locked_register_root,
77
 
    gs_locked_unregister_root,
78
 
    gs_locked_enable_free
79
 
};
80
 
 
81
 
/* ---------- Public constructors/destructors ---------- */
82
 
 
83
 
/* Initialize a gs_memory_locked_t */
84
 
int                             /* -ve error code or 0 */
85
 
gs_memory_locked_init(
86
 
                      gs_memory_locked_t * lmem,        /* allocator to init */
87
 
                      gs_memory_t * target      /* allocator to monitor lock */
88
 
)
89
 
{
90
 
    lmem->stable_memory = 0;
91
 
    lmem->procs = locked_procs;
92
 
    lmem->target = target;
93
 
    lmem->gs_lib_ctx = target->gs_lib_ctx;
94
 
    lmem->non_gc_memory = (gs_memory_t *)lmem;
95
 
 
96
 
    /* Allocate a monitor to serialize access to structures within */
97
 
    lmem->monitor = gx_monitor_alloc(target);
98
 
    return (lmem->monitor ? 0 : gs_note_error(gs_error_VMerror));
99
 
}
100
 
 
101
 
/* Release a locked memory manager. */
102
 
/* Note that this has no effect on the target. */
103
 
void
104
 
gs_memory_locked_release(gs_memory_locked_t *lmem)
105
 
{
106
 
    gs_memory_free_all((gs_memory_t *)lmem, FREE_ALL_STRUCTURES,
107
 
                       "gs_memory_locked_release");
108
 
    gx_monitor_free(lmem->monitor);
109
 
}
110
 
 
111
 
/* ---------- Accessors ------------- */
112
 
 
113
 
/* Retrieve this allocator's target */
114
 
gs_memory_t *
115
 
gs_memory_locked_target(const gs_memory_locked_t *lmem)
116
 
{
117
 
    return lmem->target;
118
 
}
119
 
 
120
 
/* -------- Private members just wrap a monitor around a gs_memory_heap --- */
121
 
 
122
 
/*
123
 
 * Contrary to our usual practice, we don't use BEGIN/END here, because
124
 
 * that causes some compilers to give bogus error messages.
125
 
 */
126
 
 
127
 
#define DO_MONITORED(call_target)\
128
 
        gs_memory_locked_t * const lmem = (gs_memory_locked_t *)mem;\
129
 
\
130
 
        gx_monitor_enter(lmem->monitor);\
131
 
        call_target;\
132
 
        gx_monitor_leave(lmem->monitor)
133
 
 
134
 
#define RETURN_MONITORED(result_type, call_target)\
135
 
        gs_memory_locked_t * const lmem = (gs_memory_locked_t *)mem;\
136
 
        result_type temp;\
137
 
\
138
 
        gx_monitor_enter(lmem->monitor);\
139
 
        temp = call_target;\
140
 
        gx_monitor_leave(lmem->monitor);\
141
 
        return temp
142
 
 
143
 
/* Procedures */
144
 
static void
145
 
gs_locked_free_all(gs_memory_t * mem, uint free_mask, client_name_t cname)
146
 
{
147
 
    gs_memory_locked_t * const lmem = (gs_memory_locked_t *)mem;
148
 
    gs_memory_t * const target = lmem->target;
149
 
 
150
 
    /* Only free the structures and the allocator itself. */
151
 
    if (mem->stable_memory) {
152
 
        if (mem->stable_memory != mem)
153
 
            gs_memory_free_all(mem->stable_memory, free_mask, cname);
154
 
        if (free_mask & FREE_ALL_ALLOCATOR)
155
 
            mem->stable_memory = 0;
156
 
    }
157
 
    if (free_mask & FREE_ALL_STRUCTURES) {
158
 
        /*
159
 
         * Check for monitor == 0, in case this is called after a
160
 
         * failure during initialization.
161
 
         */
162
 
        if (lmem->monitor)
163
 
            gx_monitor_free(lmem->monitor);
164
 
        lmem->monitor = 0;
165
 
        lmem->target = 0;
166
 
    }
167
 
    if (free_mask & FREE_ALL_ALLOCATOR)
168
 
        gs_free_object(target, lmem, cname);
169
 
}
170
 
static void
171
 
gs_locked_consolidate_free(gs_memory_t * mem)
172
 
{
173
 
    DO_MONITORED(
174
 
                 (*lmem->target->procs.consolidate_free)(lmem->target)
175
 
                 );
176
 
}
177
 
static byte *
178
 
gs_locked_alloc_bytes(gs_memory_t * mem, uint size, client_name_t cname)
179
 
{
180
 
    RETURN_MONITORED(
181
 
                     byte *,
182
 
                     (*lmem->target->procs.alloc_bytes)
183
 
                       (lmem->target, size, cname)
184
 
                     );
185
 
}
186
 
static byte *
187
 
gs_locked_alloc_bytes_immovable(gs_memory_t * mem, uint size,
188
 
                                client_name_t cname)
189
 
{
190
 
    RETURN_MONITORED(
191
 
                     byte *,
192
 
                     (*lmem->target->procs.alloc_bytes_immovable)
193
 
                       (lmem->target, size, cname)
194
 
                     );
195
 
}
196
 
static void *
197
 
gs_locked_alloc_struct(gs_memory_t * mem, gs_memory_type_ptr_t pstype,
198
 
                       client_name_t cname)
199
 
{
200
 
    RETURN_MONITORED(
201
 
                     void *,
202
 
                     (*lmem->target->procs.alloc_struct)
203
 
                       (lmem->target, pstype, cname)
204
 
                     );
205
 
}
206
 
static void *
207
 
gs_locked_alloc_struct_immovable(gs_memory_t * mem,
208
 
                           gs_memory_type_ptr_t pstype, client_name_t cname)
209
 
{
210
 
    RETURN_MONITORED(
211
 
                     void *,
212
 
                     (*lmem->target->procs.alloc_struct_immovable)
213
 
                       (lmem->target, pstype, cname)
214
 
                     );
215
 
}
216
 
static byte *
217
 
gs_locked_alloc_byte_array(gs_memory_t * mem, uint num_elements, uint elt_size,
218
 
                           client_name_t cname)
219
 
{
220
 
    RETURN_MONITORED(
221
 
                     byte *,
222
 
                     (*lmem->target->procs.alloc_byte_array)
223
 
                       (lmem->target, num_elements, elt_size, cname)
224
 
                     );
225
 
}
226
 
static byte *
227
 
gs_locked_alloc_byte_array_immovable(gs_memory_t * mem, uint num_elements,
228
 
                                     uint elt_size, client_name_t cname)
229
 
{
230
 
    RETURN_MONITORED(
231
 
                     byte *,
232
 
                     (*lmem->target->procs.alloc_byte_array_immovable)
233
 
                       (lmem->target, num_elements, elt_size, cname)
234
 
                     );
235
 
}
236
 
static void *
237
 
gs_locked_alloc_struct_array(gs_memory_t * mem, uint num_elements,
238
 
                           gs_memory_type_ptr_t pstype, client_name_t cname)
239
 
{
240
 
    RETURN_MONITORED(
241
 
                     void *,
242
 
                     (*lmem->target->procs.alloc_struct_array)
243
 
                       (lmem->target, num_elements, pstype, cname)
244
 
                     );
245
 
}
246
 
static void *
247
 
gs_locked_alloc_struct_array_immovable(gs_memory_t * mem, uint num_elements,
248
 
                           gs_memory_type_ptr_t pstype, client_name_t cname)
249
 
{
250
 
    RETURN_MONITORED(
251
 
                     void *,
252
 
                     (*lmem->target->procs.alloc_struct_array_immovable)
253
 
                       (lmem->target, num_elements, pstype, cname)
254
 
                     );
255
 
}
256
 
static void *
257
 
gs_locked_resize_object(gs_memory_t * mem, void *obj, uint new_num_elements,
258
 
                        client_name_t cname)
259
 
{
260
 
    RETURN_MONITORED(
261
 
                     void *,
262
 
                     (*lmem->target->procs.resize_object)
263
 
                       (lmem->target, obj, new_num_elements, cname)
264
 
                     );
265
 
}
266
 
static uint
267
 
gs_locked_object_size(gs_memory_t * mem, const void *ptr)
268
 
{
269
 
    RETURN_MONITORED(
270
 
                     uint,
271
 
                     (*lmem->target->procs.object_size)
272
 
                       (lmem->target, ptr)
273
 
                     );
274
 
}
275
 
static gs_memory_type_ptr_t
276
 
gs_locked_object_type(const gs_memory_t * mem, const void *ptr)
277
 
{
278
 
    RETURN_MONITORED(
279
 
                     gs_memory_type_ptr_t,
280
 
                     (*lmem->target->procs.object_type)
281
 
                       (lmem->target, ptr)
282
 
                     );
283
 
}
284
 
static void
285
 
gs_locked_free_object(gs_memory_t * mem, void *ptr, client_name_t cname)
286
 
{
287
 
    DO_MONITORED(
288
 
                 (*lmem->target->procs.free_object)
289
 
                   (lmem->target, ptr, cname)
290
 
                 );
291
 
}
292
 
static byte *
293
 
gs_locked_alloc_string(gs_memory_t * mem, uint nbytes, client_name_t cname)
294
 
{
295
 
    RETURN_MONITORED(
296
 
                     byte *,
297
 
                     (*lmem->target->procs.alloc_string)
298
 
                       (lmem->target, nbytes, cname)
299
 
                     );
300
 
}
301
 
static byte *
302
 
gs_locked_alloc_string_immovable(gs_memory_t * mem, uint nbytes,
303
 
                                 client_name_t cname)
304
 
{
305
 
    RETURN_MONITORED(
306
 
                     byte *,
307
 
                     (*lmem->target->procs.alloc_string_immovable)
308
 
                       (lmem->target, nbytes, cname)
309
 
                     );
310
 
}
311
 
static byte *
312
 
gs_locked_resize_string(gs_memory_t * mem, byte * data, uint old_num,
313
 
                        uint new_num,
314
 
                        client_name_t cname)
315
 
{
316
 
    RETURN_MONITORED(
317
 
                     byte *,
318
 
                     (*lmem->target->procs.resize_string)
319
 
                       (lmem->target, data, old_num, new_num, cname)
320
 
                     );
321
 
}
322
 
static void
323
 
gs_locked_free_string(gs_memory_t * mem, byte * data, uint nbytes,
324
 
                      client_name_t cname)
325
 
{
326
 
    DO_MONITORED(
327
 
                 (*lmem->target->procs.free_string)
328
 
                   (lmem->target, data, nbytes, cname)
329
 
                 );
330
 
}
331
 
static int
332
 
gs_locked_register_root(gs_memory_t * mem, gs_gc_root_t * rp,
333
 
                        gs_ptr_type_t ptype, void **up, client_name_t cname)
334
 
{
335
 
    RETURN_MONITORED(
336
 
                     int,
337
 
                     (*lmem->target->procs.register_root)
338
 
                       (lmem->target, rp, ptype, up, cname)
339
 
                     );
340
 
}
341
 
static void
342
 
gs_locked_unregister_root(gs_memory_t * mem, gs_gc_root_t * rp,
343
 
                          client_name_t cname)
344
 
{
345
 
    DO_MONITORED(
346
 
                 (*lmem->target->procs.unregister_root)
347
 
                   (lmem->target, rp, cname)
348
 
                 );
349
 
}
350
 
static gs_memory_t *
351
 
gs_locked_stable(gs_memory_t * mem)
352
 
{
353
 
    if (!mem->stable_memory) {
354
 
        gs_memory_locked_t * const lmem = (gs_memory_locked_t *)mem;
355
 
        gs_memory_t *stable;
356
 
 
357
 
        gx_monitor_enter(lmem->monitor);
358
 
        stable = gs_memory_stable(lmem->target);
359
 
        if (stable == lmem->target)
360
 
            mem->stable_memory = mem;
361
 
        else {
362
 
            gs_memory_locked_t *locked_stable = (gs_memory_locked_t *)
363
 
                gs_alloc_bytes(stable, sizeof(*lmem), "gs_locked_stable");
364
 
 
365
 
            if (locked_stable) {
366
 
                int code = gs_memory_locked_init(locked_stable, stable);
367
 
 
368
 
                if (code < 0)
369
 
                    gs_free_object(stable, locked_stable, "gs_locked_stable");
370
 
                else
371
 
                    mem->stable_memory = (gs_memory_t *)locked_stable;
372
 
            }
373
 
        }
374
 
        gx_monitor_leave(lmem->monitor);
375
 
    }
376
 
    return mem->stable_memory;
377
 
}
378
 
static void
379
 
gs_locked_status(gs_memory_t * mem, gs_memory_status_t * pstat)
380
 
{
381
 
    DO_MONITORED(
382
 
                 (*lmem->target->procs.status)(lmem->target, pstat)
383
 
                 );
384
 
}
385
 
static void
386
 
gs_locked_enable_free(gs_memory_t * mem, bool enable)
387
 
{
388
 
    DO_MONITORED(
389
 
                 (*lmem->target->procs.enable_free)(lmem->target, enable)
390
 
                 );
391
 
}