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Code Issues Releases Activity

(print_names): New global.

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(do_backtrace): Call unw_get_proc_name() only if print_names is TRUE.
(main): Support command-line option -c to turn on caching of
	unwind-info and -n to turn off the printing (and lookup)
	of symbol names.
	Stop execution if child dies with a signal.

(Logical change 1.209)
This commit is contained in:
mostang.com!davidm 2004-04-21 07:24:35 +00:00
parent 2f210753bd
commit a4bd80c748
1 changed files with 17 additions and 5 deletions
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22
tests/test-ptrace.c
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@ -1,5 +1,5 @@
/* libunwind - a platform-independent unwind library
Copyright (C) 2003 Hewlett-Packard Co
Copyright (C) 2003-2004 Hewlett-Packard Co
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
This file is part of libunwind.
@ -36,6 +36,7 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
int nerrors;
int verbose;
int print_names = 1;
enum
{
@ -70,7 +71,9 @@ do_backtrace (pid_t target_pid)
|| (ret = unw_get_reg (&c, UNW_REG_SP, &sp)) < 0)
panic ("unw_get_reg/unw_get_proc_name() failed: ret=%d\n", ret);
unw_get_proc_name (&c, buf, sizeof (buf), NULL);
buf[0] = '\0';
if (print_names)
unw_get_proc_name (&c, buf, sizeof (buf), NULL);
if (verbose)
printf ("%016lx %-32s (sp=%016lx)\n", (long) ip, buf, (long) sp);
@ -141,13 +144,19 @@ main (int argc, char **argv)
{
if (strcmp (argv[optind], "-v") == 0)
++optind, verbose = 1;
if (strcmp (argv[optind], "-i") == 0)
else if (strcmp (argv[optind], "-i") == 0)
++optind, trace_mode = INSTRUCTION; /* backtrace at each insn */
else if (strcmp (argv[optind], "-s") == 0)
++optind, trace_mode = SYSCALL; /* backtrace at each syscall */
++optind, trace_mode = SYSCALL; /* backtrace at each syscall */
else if (strcmp (argv[optind], "-t") == 0)
/* Execute until syscall(-1), then backtrace at each insn. */
++optind, trace_mode = TRIGGER;
else if (strcmp (argv[optind], "-c") == 0)
/* Enable caching of unwind-info. */
++optind, unw_set_caching_policy (as, UNW_CACHE_GLOBAL);
else if (strcmp (argv[optind], "-n") == 0)
/* Don't look-up and print symbol names. */
++optind, print_names = 0;
}
target_pid = fork ();
@ -186,7 +195,10 @@ main (int argc, char **argv)
break;
}
else if (WIFSIGNALED (status))
panic ("child terminated by signal %d\n", WTERMSIG (status));
{
panic ("child terminated by signal %d\n", WTERMSIG (status));
break;
}
else
{
pending_sig = WSTOPSIG (status);