1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/libsystypes/lib/src/thread.c Tue Feb 27 17:20:22 2024 +0100
1.3 @@ -0,0 +1,42 @@
1.4 +/*
1.5 + * Thread-related utilities.
1.6 + *
1.7 + * Copyright (C) 2024 Paul Boddie <paul@boddie.org.uk>
1.8 + *
1.9 + * This program is free software; you can redistribute it and/or
1.10 + * modify it under the terms of the GNU General Public License as
1.11 + * published by the Free Software Foundation; either version 2 of
1.12 + * the License, or (at your option) any later version.
1.13 + *
1.14 + * This program is distributed in the hope that it will be useful,
1.15 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
1.16 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
1.17 + * GNU General Public License for more details.
1.18 + *
1.19 + * You should have received a copy of the GNU General Public License
1.20 + * along with this program; if not, write to the Free Software
1.21 + * Foundation, Inc., 51 Franklin Street, Fifth Floor,
1.22 + * Boston, MA 02110-1301, USA
1.23 + */
1.24 +
1.25 +#include <l4/re/env.h>
1.26 +
1.27 +#include <pthread-l4.h>
1.28 +#include <pthread.h>
1.29 +
1.30 +#include "thread.h"
1.31 +
1.32 +
1.33 +
1.34 +l4_cap_idx_t get_current_thread()
1.35 +{
1.36 + l4_cap_idx_t thread = pthread_l4_cap(pthread_self());
1.37 +
1.38 + /* NOTE: On MIPS32, at least, in a payload started by libexec, the main thread
1.39 + is not necessarily returned correctly. */
1.40 +
1.41 + if (l4_is_invalid_cap(thread))
1.42 + return l4re_env()->main_thread;
1.43 +
1.44 + return thread;
1.45 +}