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2001-04-26 Michael Snyder <msnyder@redhat.com>

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* thread-db.c (_initialize_thread_db): Add set/show command
	"debug-linux-threads" for debugging output.
	* lin-lwp.c (various): Use global "debug_linux_threads to
	turn on extra debugging output.
This commit is contained in:
Michael Snyder
2001-04-26 23:14:20 +00:00
parent 4c8de859cc
commit 20b8570d73
3 changed files with 49 additions and 42 deletions
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26
gdb/thread-db.c
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@@ -31,12 +31,16 @@
#include "symfile.h"
#include "objfiles.h"
#include "target.h"
#include "command.h"
#include "gdbcmd.h"
#include "regcache.h"
#ifndef LIBTHREAD_DB_SO
#define LIBTHREAD_DB_SO "libthread_db.so.1"
#endif
int debug_linux_threads = 0; /* Set non-zero for debugging output. */
/* If we're running on Linux, we must explicitly attach to any new threads. */
/* FIXME: There is certainly some room for improvements:
@@ -51,7 +55,7 @@ static struct target_ops thread_db_ops;
static struct target_ops *target_beneath;
/* Pointer to the next function on the objfile event chain. */
static void (*target_new_objfile_chain) (struct objfile *objfile);
static void (*new_objfile_event_chain) (struct objfile *objfile);
/* Non-zero if we're using this module's target vector. */
static int using_thread_db;
@@ -588,8 +592,8 @@ thread_db_new_objfile (struct objfile *objfile)
}
quit:
if (target_new_objfile_chain)
target_new_objfile_chain (objfile);
if (new_objfile_event_chain)
new_objfile_event_chain (objfile);
}
static void
@@ -697,11 +701,10 @@ check_event (int pid)
error ("Thread creation event doesn't match breakpoint.");
#endif
/* We may already know about this thread, for instance when the
user has issued the `info threads' command before the SIGTRAP
for hitting the thread creation breakpoint was reported. */
if (! in_thread_list (pid))
attach_thread (pid, msg.th_p, &ti, 1);
if (in_thread_list (pid))
error ("Spurious thread creation event.");
attach_thread (pid, msg.th_p, &ti, 1);
return;
case TD_DEATH:
@@ -1023,7 +1026,12 @@ _initialize_thread_db (void)
add_target (&thread_db_ops);
/* Add ourselves to objfile event chain. */
target_new_objfile_chain = target_new_objfile_hook;
new_objfile_event_chain = target_new_objfile_hook;
target_new_objfile_hook = thread_db_new_objfile;
}
add_show_from_set (add_set_cmd ("debug-linux-threads", class_support,
var_boolean, (char *) &debug_linux_threads,
"Set debug output for linux-threads \
on or off.\nUse \"on\" to enable, \"off\" to disable.", &setlist),
&showlist);
}