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<hr><h1>dbus-internals.c</h1><div class="fragment"><pre>00001 <font class="comment">/* -*- mode: C; c-file-style: "gnu" -*- */</font>
00002 <font class="comment">/* dbus-internals.c random utility stuff (internal to D-BUS implementation)</font>
00003 <font class="comment"> *</font>
00004 <font class="comment"> * Copyright (C) 2002, 2003 Red Hat, Inc.</font>
00005 <font class="comment"> *</font>
00006 <font class="comment"> * Licensed under the Academic Free License version 2.0</font>
00007 <font class="comment"> * </font>
00008 <font class="comment"> * This program is free software; you can redistribute it and/or modify</font>
00009 <font class="comment"> * it under the terms of the GNU General Public License as published by</font>
00010 <font class="comment"> * the Free Software Foundation; either version 2 of the License, or</font>
00011 <font class="comment"> * (at your option) any later version.</font>
00012 <font class="comment"> *</font>
00013 <font class="comment"> * This program is distributed in the hope that it will be useful,</font>
00014 <font class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</font>
00015 <font class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</font>
00016 <font class="comment"> * GNU General Public License for more details.</font>
00017 <font class="comment"> * </font>
00018 <font class="comment"> * You should have received a copy of the GNU General Public License</font>
00019 <font class="comment"> * along with this program; if not, write to the Free Software</font>
00020 <font class="comment"> * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</font>
00021 <font class="comment"> *</font>
00022 <font class="comment"> */</font>
00023 <font class="preprocessor">#include "dbus-internals.h"</font>
00024 <font class="preprocessor">#include "dbus-protocol.h"</font>
00025 <font class="preprocessor">#include "dbus-test.h"</font>
00026 <font class="preprocessor">#include <stdio.h></font>
00027 <font class="preprocessor">#include <stdarg.h></font>
00028 <font class="preprocessor">#include <string.h></font>
00029 <font class="preprocessor">#include <sys/types.h></font>
00030 <font class="preprocessor">#include <errno.h></font>
00031 <font class="preprocessor">#include <unistd.h></font>
00032 <font class="preprocessor">#include <fcntl.h></font>
00033 <font class="preprocessor">#include <stdlib.h></font>
00034
<a name="l00158"></a><a class="code" href="group__DBusInternalsUtils.html#a0">00158</a> <font class="keyword">const</font> <font class="keywordtype">char</font> _dbus_no_memory_message[] = <font class="stringliteral">"Not enough memory"</font>;
00159
00165 <font class="keywordtype">void</font>
<a name="l00166"></a><a class="code" href="group__DBusInternalsUtils.html#a4">00166</a> _dbus_warn (<font class="keyword">const</font> <font class="keywordtype">char</font> *format,
00167 ...)
00168 {
00169 <font class="comment">/* FIXME not portable enough? */</font>
00170 va_list args;
00171
00172 va_start (args, format);
00173 vfprintf (stderr, format, args);
00174 va_end (args);
00175 }
00176
00177 <font class="keyword">static</font> dbus_bool_t verbose_initted = FALSE;
00178
00187 <font class="keywordtype">void</font>
<a name="l00188"></a><a class="code" href="group__DBusInternalsUtils.html#a5">00188</a> _dbus_verbose_real (<font class="keyword">const</font> <font class="keywordtype">char</font> *format,
00189 ...)
00190 {
00191 va_list args;
00192 <font class="keyword">static</font> dbus_bool_t verbose = TRUE;
00193 <font class="keyword">static</font> dbus_bool_t need_pid = TRUE;
00194
00195 <font class="comment">/* things are written a bit oddly here so that</font>
00196 <font class="comment"> * in the non-verbose case we just have the one</font>
00197 <font class="comment"> * conditional and return immediately.</font>
00198 <font class="comment"> */</font>
00199 <font class="keywordflow">if</font> (!verbose)
00200 <font class="keywordflow">return</font>;
00201
00202 <font class="keywordflow">if</font> (!verbose_initted)
00203 {
00204 verbose = _dbus_getenv (<font class="stringliteral">"DBUS_VERBOSE"</font>) != NULL;
00205 verbose_initted = TRUE;
00206 <font class="keywordflow">if</font> (!verbose)
00207 <font class="keywordflow">return</font>;
00208 }
00209
00210 <font class="keywordflow">if</font> (need_pid)
00211 {
00212 <font class="keywordtype">int</font> len;
00213
00214 fprintf (stderr, <font class="stringliteral">"%lu: "</font>, _dbus_getpid ());
00215
00216 len = strlen (format);
00217 <font class="keywordflow">if</font> (format[len-1] == <font class="charliteral">'\n'</font>)
00218 need_pid = TRUE;
00219 <font class="keywordflow">else</font>
00220 need_pid = FALSE;
00221 }
00222
00223 va_start (args, format);
00224 vfprintf (stderr, format, args);
00225 va_end (args);
00226
00227 fflush (stderr);
00228 }
00229
00236 <font class="keywordtype">void</font>
<a name="l00237"></a><a class="code" href="group__DBusInternalsUtils.html#a6">00237</a> _dbus_verbose_reset_real (<font class="keywordtype">void</font>)
00238 {
00239 verbose_initted = FALSE;
00240 }
00241
00250 <font class="keywordtype">char</font>*
<a name="l00251"></a><a class="code" href="group__DBusInternalsUtils.html#a7">00251</a> _dbus_strdup (<font class="keyword">const</font> <font class="keywordtype">char</font> *str)
00252 {
00253 size_t len;
00254 <font class="keywordtype">char</font> *copy;
00255
00256 <font class="keywordflow">if</font> (str == NULL)
00257 <font class="keywordflow">return</font> NULL;
00258
00259 len = strlen (str);
00260
00261 copy = dbus_malloc (len + 1);
00262 <font class="keywordflow">if</font> (copy == NULL)
00263 <font class="keywordflow">return</font> NULL;
00264
00265 memcpy (copy, str, len + 1);
00266
00267 <font class="keywordflow">return</font> copy;
00268 }
00269
00278 <font class="keywordtype">void</font>*
<a name="l00279"></a><a class="code" href="group__DBusInternalsUtils.html#a8">00279</a> _dbus_memdup (<font class="keyword">const</font> <font class="keywordtype">void</font> *mem,
00280 size_t n_bytes)
00281 {
00282 <font class="keywordtype">void</font> *copy;
00283
00284 copy = dbus_malloc (n_bytes);
00285 <font class="keywordflow">if</font> (copy == NULL)
00286 <font class="keywordflow">return</font> NULL;
00287
00288 memcpy (copy, mem, n_bytes);
00289
00290 <font class="keywordflow">return</font> copy;
00291 }
00292
00301 <font class="keywordtype">char</font>**
<a name="l00302"></a><a class="code" href="group__DBusInternalsUtils.html#a9">00302</a> _dbus_dup_string_array (<font class="keyword">const</font> <font class="keywordtype">char</font> **array)
00303 {
00304 <font class="keywordtype">int</font> len;
00305 <font class="keywordtype">int</font> i;
00306 <font class="keywordtype">char</font> **copy;
00307
00308 <font class="keywordflow">if</font> (array == NULL)
00309 <font class="keywordflow">return</font> NULL;
00310
00311 <font class="keywordflow">for</font> (len = 0; array[len] != NULL; ++len)
00312 ;
00313
00314 copy = dbus_new0 (<font class="keywordtype">char</font>*, len + 1);
00315 <font class="keywordflow">if</font> (copy == NULL)
00316 <font class="keywordflow">return</font> NULL;
00317
00318 i = 0;
00319 <font class="keywordflow">while</font> (i < len)
00320 {
00321 copy[i] = _dbus_strdup (array[i]);
00322 <font class="keywordflow">if</font> (copy[i] == NULL)
00323 {
00324 dbus_free_string_array (copy);
00325 <font class="keywordflow">return</font> NULL;
00326 }
00327
00328 ++i;
00329 }
00330
00331 <font class="keywordflow">return</font> copy;
00332 }
00333
00341 dbus_bool_t
<a name="l00342"></a><a class="code" href="group__DBusInternalsUtils.html#a10">00342</a> _dbus_string_array_contains (<font class="keyword">const</font> <font class="keywordtype">char</font> **array,
00343 <font class="keyword">const</font> <font class="keywordtype">char</font> *str)
00344 {
00345 <font class="keywordtype">int</font> i;
00346
00347 i = 0;
00348 <font class="keywordflow">while</font> (array[i] != NULL)
00349 {
00350 <font class="keywordflow">if</font> (strcmp (array[i], str) == 0)
00351 <font class="keywordflow">return</font> TRUE;
00352 ++i;
00353 }
00354
00355 <font class="keywordflow">return</font> FALSE;
00356 }
00357
00364 <font class="keyword">const</font> <font class="keywordtype">char</font> *
<a name="l00365"></a><a class="code" href="group__DBusInternalsUtils.html#a11">00365</a> _dbus_type_to_string (<font class="keywordtype">int</font> type)
00366 {
00367 <font class="keywordflow">switch</font> (type)
00368 {
00369 <font class="keywordflow">case</font> DBUS_TYPE_INVALID:
00370 <font class="keywordflow">return</font> <font class="stringliteral">"invalid"</font>;
00371 <font class="keywordflow">case</font> DBUS_TYPE_NIL:
00372 <font class="keywordflow">return</font> <font class="stringliteral">"nil"</font>;
00373 <font class="keywordflow">case</font> DBUS_TYPE_BOOLEAN:
00374 <font class="keywordflow">return</font> <font class="stringliteral">"boolean"</font>;
00375 <font class="keywordflow">case</font> DBUS_TYPE_INT32:
00376 <font class="keywordflow">return</font> <font class="stringliteral">"int32"</font>;
00377 <font class="keywordflow">case</font> DBUS_TYPE_UINT32:
00378 <font class="keywordflow">return</font> <font class="stringliteral">"uint32"</font>;
00379 <font class="keywordflow">case</font> DBUS_TYPE_DOUBLE:
00380 <font class="keywordflow">return</font> <font class="stringliteral">"double"</font>;
00381 <font class="keywordflow">case</font> DBUS_TYPE_STRING:
00382 <font class="keywordflow">return</font> <font class="stringliteral">"string"</font>;
00383 <font class="keywordflow">case</font> DBUS_TYPE_CUSTOM:
00384 <font class="keywordflow">return</font> <font class="stringliteral">"custom"</font>;
00385 <font class="keywordflow">case</font> DBUS_TYPE_ARRAY:
00386 <font class="keywordflow">return</font> <font class="stringliteral">"array"</font>;
00387 <font class="keywordflow">case</font> DBUS_TYPE_DICT:
00388 <font class="keywordflow">return</font> <font class="stringliteral">"dict"</font>;
00389 <font class="keywordflow">default</font>:
00390 <font class="keywordflow">return</font> <font class="stringliteral">"unknown"</font>;
00391 }
00392 }
00393
00400 <font class="keyword">const</font> <font class="keywordtype">char</font> *
<a name="l00401"></a><a class="code" href="group__DBusInternalsUtils.html#a12">00401</a> _dbus_header_field_to_string (<font class="keywordtype">int</font> header_field)
00402 {
00403 <font class="keywordflow">switch</font> (header_field)
00404 {
00405 <font class="keywordflow">case</font> DBUS_HEADER_FIELD_INVALID:
00406 <font class="keywordflow">return</font> <font class="stringliteral">"invalid"</font>;
00407 <font class="keywordflow">case</font> DBUS_HEADER_FIELD_PATH:
00408 <font class="keywordflow">return</font> <font class="stringliteral">"path"</font>;
00409 <font class="keywordflow">case</font> DBUS_HEADER_FIELD_INTERFACE:
00410 <font class="keywordflow">return</font> <font class="stringliteral">"interface"</font>;
00411 <font class="keywordflow">case</font> DBUS_HEADER_FIELD_MEMBER:
00412 <font class="keywordflow">return</font> <font class="stringliteral">"member"</font>;
00413 <font class="keywordflow">case</font> DBUS_HEADER_FIELD_ERROR_NAME:
00414 <font class="keywordflow">return</font> <font class="stringliteral">"error-name"</font>;
00415 <font class="keywordflow">case</font> DBUS_HEADER_FIELD_REPLY_SERIAL:
00416 <font class="keywordflow">return</font> <font class="stringliteral">"reply-serial"</font>;
00417 <font class="keywordflow">case</font> DBUS_HEADER_FIELD_DESTINATION:
00418 <font class="keywordflow">return</font> <font class="stringliteral">"destination"</font>;
00419 <font class="keywordflow">case</font> DBUS_HEADER_FIELD_SENDER:
00420 <font class="keywordflow">return</font> <font class="stringliteral">"sender"</font>;
00421 <font class="keywordflow">default</font>:
00422 <font class="keywordflow">return</font> <font class="stringliteral">"unknown"</font>;
00423 }
00424 }
00425
00426 <font class="preprocessor">#ifndef DBUS_DISABLE_CHECKS</font>
00427 <font class="preprocessor"></font>
<a name="l00428"></a><a class="code" href="group__DBusInternalsUtils.html#a2">00428</a> <font class="keyword">const</font> <font class="keywordtype">char</font> _dbus_return_if_fail_warning_format[] =
00429 <font class="stringliteral">"%lu: arguments to %s() were incorrect, assertion \"%s\" failed in file %s line %d.\n"</font>
00430 <font class="stringliteral">"This is normally a bug in some application using the D-BUS library.\n"</font>;
00431 <font class="preprocessor">#endif</font>
00432 <font class="preprocessor"></font>
00433 <font class="preprocessor">#ifndef DBUS_DISABLE_ASSERT</font>
00434 <font class="preprocessor"></font>
00445 <font class="keywordtype">void</font>
<a name="l00446"></a><a class="code" href="group__DBusInternalsUtils.html#a13">00446</a> _dbus_real_assert (dbus_bool_t condition,
00447 <font class="keyword">const</font> <font class="keywordtype">char</font> *condition_text,
00448 <font class="keyword">const</font> <font class="keywordtype">char</font> *file,
00449 <font class="keywordtype">int</font> line)
00450 {
00451 <font class="keywordflow">if</font> (_DBUS_UNLIKELY (!condition))
00452 {
00453 _dbus_warn (<font class="stringliteral">"%lu: assertion failed \"%s\" file \"%s\" line %d\n"</font>,
00454 _dbus_getpid (), condition_text, file, line);
00455 _dbus_abort ();
00456 }
00457 }
00458
00469 <font class="keywordtype">void</font>
<a name="l00470"></a><a class="code" href="group__DBusInternalsUtils.html#a14">00470</a> _dbus_real_assert_not_reached (<font class="keyword">const</font> <font class="keywordtype">char</font> *explanation,
00471 <font class="keyword">const</font> <font class="keywordtype">char</font> *file,
00472 <font class="keywordtype">int</font> line)
00473 {
00474 _dbus_warn (<font class="stringliteral">"File \"%s\" line %d process %lu should not have been reached: %s\n"</font>,
00475 file, line, _dbus_getpid (), explanation);
00476 _dbus_abort ();
00477 }
00478 <font class="preprocessor">#endif </font><font class="comment">/* DBUS_DISABLE_ASSERT */</font>
00479
00480 <font class="preprocessor">#ifdef DBUS_BUILD_TESTS</font>
00481 <font class="preprocessor"></font><font class="keyword">static</font> dbus_bool_t
00482 run_failing_each_malloc (<font class="keywordtype">int</font> n_mallocs,
00483 <font class="keyword">const</font> <font class="keywordtype">char</font> *description,
00484 DBusTestMemoryFunction func,
00485 <font class="keywordtype">void</font> *data)
00486 {
00487 n_mallocs += 10; <font class="comment">/* fudge factor to ensure reallocs etc. are covered */</font>
00488
00489 <font class="keywordflow">while</font> (n_mallocs >= 0)
00490 {
00491 _dbus_set_fail_alloc_counter (n_mallocs);
00492
00493 _dbus_verbose (<font class="stringliteral">"\n===\n%s: (will fail malloc %d with %d failures)\n===\n"</font>,
00494 description, n_mallocs,
00495 _dbus_get_fail_alloc_failures ());
00496
00497 <font class="keywordflow">if</font> (!(* func) (data))
00498 <font class="keywordflow">return</font> FALSE;
00499
00500 n_mallocs -= 1;
00501 }
00502
00503 _dbus_set_fail_alloc_counter (_DBUS_INT_MAX);
00504
00505 <font class="keywordflow">return</font> TRUE;
00506 }
00507
00521 dbus_bool_t
<a name="l00522"></a><a class="code" href="group__DBusInternalsUtils.html#a16">00522</a> _dbus_test_oom_handling (<font class="keyword">const</font> <font class="keywordtype">char</font> *description,
00523 DBusTestMemoryFunction func,
00524 <font class="keywordtype">void</font> *data)
00525 {
00526 <font class="keywordtype">int</font> approx_mallocs;
00527
00528 <font class="comment">/* Run once to see about how many mallocs are involved */</font>
00529
00530 _dbus_set_fail_alloc_counter (_DBUS_INT_MAX);
00531
00532 _dbus_verbose (<font class="stringliteral">"Running once to count mallocs\n"</font>);
00533
00534 <font class="keywordflow">if</font> (!(* func) (data))
00535 <font class="keywordflow">return</font> FALSE;
00536
00537 approx_mallocs = _DBUS_INT_MAX - _dbus_get_fail_alloc_counter ();
00538
00539 _dbus_verbose (<font class="stringliteral">"\n=================\n%s: about %d mallocs total\n=================\n"</font>,
00540 description, approx_mallocs);
00541
00542 _dbus_set_fail_alloc_failures (1);
00543 <font class="keywordflow">if</font> (!run_failing_each_malloc (approx_mallocs, description, func, data))
00544 <font class="keywordflow">return</font> FALSE;
00545
00546 _dbus_set_fail_alloc_failures (2);
00547 <font class="keywordflow">if</font> (!run_failing_each_malloc (approx_mallocs, description, func, data))
00548 <font class="keywordflow">return</font> FALSE;
00549
00550 _dbus_set_fail_alloc_failures (3);
00551 <font class="keywordflow">if</font> (!run_failing_each_malloc (approx_mallocs, description, func, data))
00552 <font class="keywordflow">return</font> FALSE;
00553
00554 _dbus_set_fail_alloc_failures (4);
00555 <font class="keywordflow">if</font> (!run_failing_each_malloc (approx_mallocs, description, func, data))
00556 <font class="keywordflow">return</font> FALSE;
00557
00558 _dbus_verbose (<font class="stringliteral">"\n=================\n%s: all iterations passed\n=================\n"</font>,
00559 description);
00560
00561 <font class="keywordflow">return</font> TRUE;
00562 }
00563 <font class="preprocessor">#endif </font><font class="comment">/* DBUS_BUILD_TESTS */</font>
00564
</pre></div><hr><address align="right"><small>Generated on Wed Jun 9 05:01:25 2004 for D-BUS by
<a href="http://www.doxygen.org/index.html">
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