NaCl: Set tid field to a unique value.

1 files changed, 30 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/pthread-pids.h b/sysdeps/unix/sysv/linux/pthread-pids.h
new file mode 100644
index 0000000000..d333648efa
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/pthread-pids.h
@@ -0,0 +1,30 @@
+/* Initialize pid and tid fields of struct pthread.  Linux version.
+   Copyright (C) 2015 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <pthreadP.h>
+#include <sysdep.h>
+
+/* Initialize PD->pid and PD->tid for the initial thread.  If there is
+   setup required to arrange that __exit_thread causes PD->tid to be
+   cleared and futex-woken, then this function should do that as well.  */
+static inline void
+__pthread_initialize_pids (struct pthread *pd)
+{
+  INTERNAL_SYSCALL_DECL (err);
+  pd->pid = pd->tid = INTERNAL_SYSCALL (set_tid_address, err, 1, &pd->tid);
+}