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--- src/tools.cc.orig 2014-10-31 12:36:43.000000000 +0300
+++ src/tools.cc 2014-11-21 14:11:25.000000000 +0300
@@ -71,6 +71,13 @@
#include <errno.h>
#endif
+#if PRINT_STACK_TRACE
+#ifdef __FreeBSD__
+#define UNW_LOCAL_ONLY
+#include <libunwind.h>
+#endif
+#endif
+
#define DEAD_MSG "\
The Squid Cache (version %s) died.\n\
\n\
@@ -411,6 +418,45 @@
}
#endif
+#ifdef __FreeBSD__
+ do {
+ unw_context_t unw_ctx;
+ unw_cursor_t unw_cp;
+ unw_word_t sp, ip, off;
+ int rc = 0;
+ char procname[256];
+ size_t frame;
+
+ bzero((void *)&unw_ctx, sizeof(unw_ctx));
+ bzero((void *)&unw_cp, sizeof(unw_cp));
+
+ if ((rc = unw_getcontext(&unw_ctx))) {
+ fprintf(debug_log, "Failed to trace own stack: "
+ "unw_context() said '%s'.\n", unw_strerror(rc));
+ break;
+ }
+ if ((rc = unw_init_local(&unw_cp, &unw_ctx))) {
+ fprintf(debug_log, "Failed to trace own stack: "
+ "unw_init_local() said '%s'.\n", unw_strerror(rc));
+ break;
+ }
+ frame = 0;
+ fprintf(debug_log, "Backtrace follows (deepest frame first):\n");
+ while ((rc = unw_step(&unw_cp)) > 0) {
+ frame++;
+ ip = 0; sp = 0;
+ unw_get_reg(&unw_cp, UNW_REG_IP, &ip);
+ unw_get_reg(&unw_cp, UNW_REG_SP, &sp);
+ off = 0;
+ rc = unw_get_proc_name(&unw_cp, procname, sizeof(procname), &off);
+ if (rc)
+ snprintf (procname, sizeof(procname), "[unknown]");
+ fprintf(debug_log, "#%zd: %s + 0x%zx, ip = 0x%zx, sp = 0x%zx\n",
+ frame, procname, (size_t)off, (size_t)ip, (size_t)sp);
+ }
+ fprintf(debug_log, "Use addr2line of similar to translate offsets to line information.\n");
+ } while (0);
+#endif /* __FreeBSD__ */
#endif /* PRINT_STACK_TRACE */
#if SA_RESETHAND == 0 && !_SQUID_WINDOWS_
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