1 files changed, 35 insertions, 0 deletions
diff --git a/support/support_set_small_thread_stack_size.c b/support/support_set_small_thread_stack_size.c
new file mode 100644
index 0000000000..32954ec10c
--- /dev/null
+++ b/support/support_set_small_thread_stack_size.c
@@ -0,0 +1,35 @@
+/* Set a small stack size, but still large enough for glibc's needs.
+   Copyright (C) 2019 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
+   <https://www.gnu.org/licenses/>.  */
+
+#include <limits.h>
+#include <pthread.h>
+#include <support/xthread.h>
+
+void
+support_set_small_thread_stack_size (pthread_attr_t *attr)
+{
+  /* Some architectures have too small values for PTHREAD_STACK_MIN
+     which cannot be used for creating threads.  Ensure that the stack
+     size is at least 256 KiB.  */
+  size_t stack_size = 256 * 1024;
+#ifdef PTHREAD_STACK_MIN
+  if (stack_size < PTHREAD_STACK_MIN)
+    stack_size = PTHREAD_STACK_MIN;
+#endif
+  xpthread_attr_setstacksize (attr, stack_size);
+}