/*
-** OSSP ex - Exception Handling
+** OSSP ex - Exception Handling (modified to fit into SimGrid)
+** Copyright (c) 2005 Martin Quinson
** Copyright (c) 2002-2004 Ralf S. Engelschall <rse@engelschall.com>
** Copyright (c) 2002-2004 The OSSP Project <http://www.ossp.org/>
** Copyright (c) 2002-2004 Cable & Wireless <http://www.cw.com/>
#include <stdio.h>
#include <stdlib.h>
+#include "portable.h" /* execinfo when available */
#include "xbt/ex.h"
/* default __ex_ctx callback function */
-ex_ctx_t *__ex_ctx_default(void)
-{
- static ex_ctx_t ctx = EX_CTX_INITIALIZER;
+ex_ctx_t *__xbt_ex_ctx_default(void) {
+ static ex_ctx_t ctx = XBT_CTX_INITIALIZER;
return &ctx;
}
+/** @brief shows an exception content and the associated stack if available */
+void xbt_ex_display(xbt_ex_t *e) {
+
+ fprintf(stderr,
+ "** SimGrid: UNCAUGHT EXCEPTION: category: %s; value: %d\n"
+ "** %s\n"
+ "** Thrown by %s%s%s at %s:%d:%s\n",
+ xbt_ex_catname(e->category), e->value, e->msg,
+ e->procname, (e->host?"@":""),(e->host?e->host:"localhost"),
+ e->file,e->line,e->func);
+
+#ifdef HAVE_EXECINFO_H
+ {
+ char **strings;
+ int i;
+
+ fprintf(stderr,"** Backtrace:\n");
+ strings = backtrace_symbols (e->bt, e->used);
+
+ for (i = 0; i < e->used; i++)
+ printf (" %s\n", strings[i]);
+
+ free (strings);
+ }
+#endif
+}
+
+
/* default __ex_terminate callback function */
-void __ex_terminate_default(ex_t *e)
-{
- fprintf(stderr,
- "**EX: UNCAUGHT EXCEPTION: "
- "class=0x%lx object=0x%lx value=0x%lx [%s:%d@%s]\n",
- (long)((e)->ex_class), (long)((e)->ex_object), (long)((e)->ex_value),
- (e)->ex_file, (e)->ex_line, (e)->ex_func);
- abort();
+void __xbt_ex_terminate_default(xbt_ex_t *e) {
+ xbt_ex_display(e);
+
+ abort();
}
/* the externally visible API */
-ex_ctx_cb_t __ex_ctx = &__ex_ctx_default;
-ex_term_cb_t __ex_terminate = &__ex_terminate_default;
+ex_ctx_cb_t __xbt_ex_ctx = &__xbt_ex_ctx_default;
+ex_term_cb_t __xbt_ex_terminate = &__xbt_ex_terminate_default;
+
+void xbt_ex_free(xbt_ex_t e) {
+ if (e.msg) free(e.msg);
+ free(e.procname);
+}
+
+/** \brief returns a short name for the given exception category */
+const char * xbt_ex_catname(xbt_errcat_t cat) {
+ switch (cat) {
+ case unknown_error: return "unknown_err";
+ case arg_error: return "invalid_arg";
+ case mismatch_error: return "mismatch";
+ case not_found_error: return "not found";
+ case system_error: return "system_err";
+ case network_error: return "network_err";
+ case timeout_error: return "timeout";
+ case thread_error: return "thread_err";
+ default: return "INVALID_ERR";
+ }
+}
+
+#ifndef HAVE_EXECINFO_H
+/* dummy implementation. We won't use the result, but ex.h needs it to be defined */
+int backtrace (void **__array, int __size) {
+ return 0;
+}
+
+#endif
+#ifdef SIMGRID_TEST
+#include "xbt/ex.h"
+
+XBT_TEST_SUITE("xbt_ex","Exception Handling");
+
+XBT_TEST_UNIT("controlflow",test_controlflow, "basic nested control flow") {
+ xbt_ex_t ex;
+ volatile int n=1;
+
+ xbt_test_add0("basic nested control flow");
+
+ TRY {
+ if (n != 1)
+ xbt_test_fail1("M1: n=%d (!= 1)", n);
+ n++;
+ TRY {
+ if (n != 2)
+ xbt_test_fail1("M2: n=%d (!= 2)", n);
+ n++;
+ THROW0(unknown_error,0,"something");
+ } CATCH (ex) {
+ if (n != 3)
+ xbt_test_fail1("M3: n=%d (!= 1)", n);
+ n++;
+ RETHROW;
+ }
+ xbt_test_fail1("MX: n=%d (shouldn't reach this point)", n);
+ }
+ CATCH(ex) {
+ if (n != 4)
+ xbt_test_fail1("M4: n=%d (!= 4)", n);
+ n++;
+ xbt_ex_free(ex);
+ }
+ if (n != 5)
+ xbt_test_fail1("M5: n=%d (!= 5)", n);
+}
+
+XBT_TEST_UNIT("value",test_value,"exception value passing") {
+ xbt_ex_t ex;
+
+ TRY {
+ THROW0(unknown_error, 2, "toto");
+ } CATCH(ex) {
+ xbt_test_add0("exception value passing");
+ if (ex.category != unknown_error)
+ xbt_test_fail1("category=%d (!= 1)", ex.category);
+ if (ex.value != 2)
+ xbt_test_fail1("value=%d (!= 2)", ex.value);
+ if (strcmp(ex.msg,"toto"))
+ xbt_test_fail1("message=%s (!= toto)", ex.msg);
+ xbt_ex_free(ex);
+ }
+}
+
+XBT_TEST_UNIT("variables",test_variables,"variable value preservation") {
+ xbt_ex_t ex;
+ int r1, r2;
+ volatile int v1, v2;
+
+ r1 = r2 = v1 = v2 = 1234;
+ TRY {
+ r2 = 5678;
+ v2 = 5678;
+ THROW0(unknown_error, 0, "toto");
+ } CATCH(ex) {
+ xbt_test_add0("variable preservation");
+ if (r1 != 1234)
+ xbt_test_fail1("r1=%d (!= 1234)", r1);
+ if (v1 != 1234)
+ xbt_test_fail1("v1=%d (!= 1234)", v1);
+ /* r2 is allowed to be destroyed because not volatile */
+ if (v2 != 5678)
+ xbt_test_fail1("v2=%d (!= 5678)", v2);
+ xbt_ex_free(ex);
+ }
+}
+
+XBT_TEST_UNIT("cleanup",test_cleanup,"cleanup handling") {
+ xbt_ex_t ex;
+ volatile int v1;
+ int c;
+
+ xbt_test_add0("cleanup handling");
+
+ v1 = 1234;
+ c = 0;
+ TRY {
+ v1 = 5678;
+ THROW0(1, 2, "blah");
+ } CLEANUP {
+ if (v1 != 5678)
+ xbt_test_fail1("v1 = %d (!= 5678)", v1);
+ c = 1;
+ } CATCH(ex) {
+ if (v1 != 5678)
+ xbt_test_fail1("v1 = %d (!= 5678)", v1);
+ if (!(ex.category == 1 && ex.value == 2 && !strcmp(ex.msg,"blah")))
+ xbt_test_fail0("unexpected exception contents");
+ xbt_ex_free(ex);
+ }
+ if (!c)
+ xbt_test_fail0("xbt_ex_free not executed");
+}
+#endif /* SIMGRID_TEST */
