From d6c146e9ea09e050e6f05fa00312de3fe763e811 Mon Sep 17 00:00:00 2001 From: Pedro Alves Date: Mon, 26 Jan 2015 17:52:25 +0000 Subject: [PATCH] libthread_db: attaching to terminated/joined threads, debug output Add a bit of debug output that made things a bit easier for me before. gdb/ 2015-02-06 Pedro Alves * linux-thread-db.c (find_new_threads_callback): Add debug output. gdb/gdbserver/ 2015-02-06 Pedro Alves * thread-db.c (find_new_threads_callback): Add debug output. --- gdb/ChangeLog | 4 ++++ gdb/gdbserver/ChangeLog | 4 ++++ gdb/gdbserver/thread-db.c | 3 +++ gdb/linux-thread-db.c | 4 ++++ 4 files changed, 15 insertions(+) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index dbeef19e1d6..03c85f2fe66 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,7 @@ +2015-02-06 Pedro Alves + + * linux-thread-db.c (find_new_threads_callback): Add debug output. + 2015-02-06 Simon Marchi PR gdb/15678 diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog index f55add23d77..866e2d66a23 100644 --- a/gdb/gdbserver/ChangeLog +++ b/gdb/gdbserver/ChangeLog @@ -1,3 +1,7 @@ +2015-02-06 Pedro Alves + + * thread-db.c (find_new_threads_callback): Add debug output. + 2015-02-04 Pedro Alves * linux-low.c (handle_extended_wait): Don't resume LWPs here. diff --git a/gdb/gdbserver/thread-db.c b/gdb/gdbserver/thread-db.c index b0d1f0d945a..2185245289a 100644 --- a/gdb/gdbserver/thread-db.c +++ b/gdb/gdbserver/thread-db.c @@ -404,6 +404,9 @@ find_new_threads_callback (const td_thrhandle_t *th_p, void *data) thread that previously exited and was joined. (glibc marks terminated and joined threads with kernel thread ID -1. See glibc PR17707. */ + if (debug_threads) + debug_printf ("thread_db: skipping exited and " + "joined thread (0x%lx)\n", ti.ti_tid); return 0; } diff --git a/gdb/linux-thread-db.c b/gdb/linux-thread-db.c index 156cfe75e23..6b525a0a5c7 100644 --- a/gdb/linux-thread-db.c +++ b/gdb/linux-thread-db.c @@ -1639,6 +1639,10 @@ find_new_threads_callback (const td_thrhandle_t *th_p, void *data) thread that previously exited and was joined. (glibc marks terminated and joined threads with kernel thread ID -1. See glibc PR17707. */ + if (libthread_db_debug) + fprintf_unfiltered (gdb_stdlog, + "thread_db: skipping exited and " + "joined thread (0x%lx)\n", ti.ti_tid); return 0; } -- 2.30.2