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authorRoland McGrath <roland@hack.frob.com>2015-05-20 14:52:05 -0700
committerRoland McGrath <roland@hack.frob.com>2015-05-20 14:52:05 -0700
commit7cea6212785552b73f22af110a71aa77e2333b82 (patch)
tree445b5634c218d5b563c2e16cef50a2d51772ca9d /nptl
parent5e2aa9a421cd429e9ef7d169eda7c18a119e9b8c (diff)
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NaCl: Set tid field to a unique value.
Diffstat (limited to 'nptl')
-rw-r--r--nptl/nptl-init.c6
-rw-r--r--nptl/pthread-pids.h29
2 files changed, 31 insertions, 4 deletions
diff --git a/nptl/nptl-init.c b/nptl/nptl-init.c
index 1ad41c5..5b8d931 100644
--- a/nptl/nptl-init.c
+++ b/nptl/nptl-init.c
@@ -36,6 +36,7 @@
#include <lowlevellock.h>
#include <kernel-features.h>
#include <libc-internal.h>
+#include <pthread-pids.h>
#ifndef TLS_MULTIPLE_THREADS_IN_TCB
/* Pointer to the corresponding variable in libc. */
@@ -311,10 +312,7 @@ __pthread_initialize_minimal_internal (void)
/* Minimal initialization of the thread descriptor. */
struct pthread *pd = THREAD_SELF;
-#ifdef __NR_set_tid_address
- INTERNAL_SYSCALL_DECL (err);
- pd->pid = pd->tid = INTERNAL_SYSCALL (set_tid_address, err, 1, &pd->tid);
-#endif
+ __pthread_initialize_pids (pd);
THREAD_SETMEM (pd, specific[0], &pd->specific_1stblock[0]);
THREAD_SETMEM (pd, user_stack, true);
if (LLL_LOCK_INITIALIZER != 0)
diff --git a/nptl/pthread-pids.h b/nptl/pthread-pids.h
new file mode 100644
index 0000000..33d764c
--- /dev/null
+++ b/nptl/pthread-pids.h
@@ -0,0 +1,29 @@
+/* Initialize pid and tid fields of struct pthread. Stub 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>
+
+/* 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)
+{
+#error "sysdeps pthread-pids.h file required"
+ pd->pid = pd->tid = -1;
+}