1 /* ex - Exception Handling */
3 /* Copyright (c) 2005-2015. The SimGrid Team.
4 * All rights reserved. */
6 /* Copyright (c) 2002-2004 Ralf S. Engelschall <rse@engelschall.com> */
7 /* Copyright (c) 2002-2004 The OSSP Project <http://www.ossp.org/> */
8 /* Copyright (c) 2002-2004 Cable & Wireless <http://www.cw.com/> */
9 /* All rights reserved. */
11 /* This code is inspirated from the OSSP version (as retrieved back in 2004)*/
12 /* It was heavily modified to fit the SimGrid framework. */
14 /* The OSSP version has the following copyright notice:
15 ** OSSP ex - Exception Handling
16 ** Copyright (c) 2002-2004 Ralf S. Engelschall <rse@engelschall.com>
17 ** Copyright (c) 2002-2004 The OSSP Project <http://www.ossp.org/>
18 ** Copyright (c) 2002-2004 Cable & Wireless <http://www.cw.com/>
20 ** This file is part of OSSP ex, an exception handling library
21 ** which can be found at http://www.ossp.org/pkg/lib/ex/.
23 ** Permission to use, copy, modify, and distribute this software for
24 ** any purpose with or without fee is hereby granted, provided that
25 ** the above copyright notice and this permission notice appear in all
28 ** THIS SOFTWARE IS PROVIDED `AS IS'' AND ANY EXPRESSED OR IMPLIED
29 ** WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
30 ** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
31 ** IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
32 ** CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
33 ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
34 ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
35 ** USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
36 ** ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
37 ** OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
38 ** OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
42 /* The extensions made for the SimGrid project can either be distributed */
43 /* under the same license, or under the LGPL v2.1 */
48 #include "src/internal_config.h" /* execinfo when available */
51 #include "xbt/synchro_core.h"
52 #include "src/xbt_modinter.h" /* backtrace initialization headers */
54 #include "src/xbt/ex_interface.h"
55 #include "simgrid/sg_config.h" /* Configuration mechanism of SimGrid */
57 #include "simgrid/simix.h" /* SIMIX_process_self_get_name() */
59 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(xbt_ex, xbt, "Exception mechanism");
63 /* Change raw libc symbols to file names and line numbers */
64 void xbt_ex_setup_backtrace(xbt_ex_t * e);
66 void xbt_backtrace_display(xbt_ex_t * e)
70 xbt_ex_setup_backtrace(e);
73 if (e->bt_strings.empty()) {
74 fprintf(stderr, "(backtrace not set)\n");
76 fprintf(stderr, "Backtrace (displayed in process %s):\n", SIMIX_process_self_get_name());
77 for (std::string const& s : e->bt_strings) /* no need to display "xbt_backtrace_display" */
78 fprintf(stderr, "---> %s\n", s.c_str() + 4);
82 XBT_ERROR("No backtrace on this arch");
87 /** \brief show the backtrace of the current point (lovely while debuging) */
88 void xbt_backtrace_display_current(void)
91 xbt_backtrace_current(&e);
92 xbt_backtrace_display(&e);
95 #if HAVE_BACKTRACE && HAVE_EXECINFO_H && HAVE_POPEN && defined(ADDR2LINE)
96 # include "src/xbt/backtrace_linux.c"
98 # include "src/xbt/backtrace_dummy.c"
102 char* message, xbt_errcat_t errcat, int value,
103 const char* file, int line, const char* func)
112 e.procname = xbt_procname();
113 e.pid = xbt_getpid();
117 /** @brief shows an exception content and the associated stack if available */
118 void xbt_ex_display(xbt_ex_t * e)
120 char *thrower = NULL;
121 if (e->pid != xbt_getpid())
122 thrower = bprintf(" on process %d",e->pid);
124 fprintf(stderr, "** SimGrid: UNCAUGHT EXCEPTION received on %s(%d): category: %s; value: %d\n"
126 "** Thrown by %s()%s\n",
127 xbt_binary_name, xbt_getpid(), xbt_ex_catname(e->category), e->value, e->what(),
128 e->procname.c_str(), thrower ? thrower : " in this process");
129 XBT_CRITICAL("%s", e->what());
132 if (xbt_initialized==0 || smx_cleaned) {
133 fprintf(stderr, "Ouch. SimGrid is not initialized yet, or already closing. No backtrace available.\n");
134 return; /* Not started yet or already closing. Trying to generate a backtrace would probably fail */
137 if (e->bt_strings.empty())
138 xbt_ex_setup_backtrace(e);
140 #ifdef HAVE_BACKTRACE
141 if (!e->bt.empty() && !e->bt_strings.empty()) {
142 /* We have everything to build neat backtraces */
144 try { // We don't want to have an exception while checking how to deal with the one we already have, do we?
145 cutpath = xbt_cfg_get_boolean("exception/cutpath");
151 fprintf(stderr, "\n");
152 for (std::string const& s : e->bt_strings) {
157 char* p = e->bt_strings[i];
158 xbt_str_rtrim(p, ":0123456789");
159 char* filename = strrchr(p, '/')+1;
160 char* end_of_message = strrchr(p, ' ');
162 int length = strlen(p)-strlen(end_of_message);
163 char* dest = malloc(length);
165 memcpy(dest, &p[0], length);
168 fprintf(stderr, "%s %s\n", dest, filename);
174 fprintf(stderr, "%s\n", s.c_str());
180 "** In %s() at %s:%d\n"
181 "** (no backtrace available)\n", e->func, e->file, e->line);
184 /** \brief returns a short name for the given exception category */
185 const char *xbt_ex_catname(xbt_errcat_t cat)
189 return "unknown error";
191 return "invalid argument";
193 return "out of bounds";
196 case not_found_error:
199 return "system error";
201 return "network error";
205 return "action canceled";
207 return "thread error";
209 return "host failed";
211 return "tracing error";
217 return "INVALID ERROR";
224 XBT_TEST_SUITE("xbt_ex", "Exception Handling");
226 XBT_TEST_UNIT("controlflow", test_controlflow, "basic nested control flow")
231 xbt_test_add("basic nested control flow");
235 xbt_test_fail("M1: n=%d (!= 1)", n);
239 xbt_test_fail("M2: n=%d (!= 2)", n);
241 THROWF(unknown_error, 0, "something");
245 xbt_test_fail("M3: n=%d (!= 3)", n);
251 xbt_test_fail("M2: n=%d (!= 5)", n);
253 THROWF(unknown_error, 0, "something");
257 xbt_test_fail("M3: n=%d (!= 6)", n);
262 xbt_test_fail("MX: n=%d (shouldn't reach this point)", n);
266 xbt_test_fail("M4: n=%d (!= 7)", n);
270 xbt_test_fail("M5: n=%d (!= 8)", n);
273 XBT_TEST_UNIT("value", test_value, "exception value passing")
276 THROWF(unknown_error, 2, "toto");
279 xbt_test_add("exception value passing");
280 if (ex.category != unknown_error)
281 xbt_test_fail("category=%d (!= 1)", (int)ex.category);
283 xbt_test_fail("value=%d (!= 2)", ex.value);
284 if (strcmp(ex.what(), "toto"))
285 xbt_test_fail("message=%s (!= toto)", ex.what());
289 XBT_TEST_UNIT("variables", test_variables, "variable value preservation")
293 int XBT_ATTRIB_UNUSED r2;
297 r1 = r2 = v1 = v2 = 1234;
301 THROWF(unknown_error, 0, "toto");
304 xbt_test_add("variable preservation");
306 xbt_test_fail("r1=%d (!= 1234)", r1);
308 xbt_test_fail("v1=%d (!= 1234)", v1);
309 /* r2 is allowed to be destroyed because not volatile */
311 xbt_test_fail("v2=%d (!= 5678)", v2);
315 XBT_TEST_UNIT("cleanup", test_cleanup, "cleanup handling")
320 xbt_test_add("cleanup handling");
326 THROWF(1, 2, "blah");
330 xbt_test_fail("v1 = %d (!= 5678)", v1);
333 xbt_test_fail("v1 = %d (!= 5678)", v1);
334 if (!(ex.category == 1 && ex.value == 2 && !strcmp(ex.what(), "blah")))
335 xbt_test_fail("unexpected exception contents");
338 xbt_test_fail("xbt_ex_free not executed");
340 #endif /* SIMGRID_TEST */