1 files changed, 46 insertions, 0 deletions
diff --git a/src/third_party/unwind/dist/src/mi/Gset_caching_policy.c b/src/third_party/unwind/dist/src/mi/Gset_caching_policy.c
new file mode 100644
index 00000000000..aa3d237146e
--- /dev/null
+++ b/src/third_party/unwind/dist/src/mi/Gset_caching_policy.c
@@ -0,0 +1,46 @@
+/* libunwind - a platform-independent unwind library
+   Copyright (C) 2002, 2005 Hewlett-Packard Co
+        Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
+
+This file is part of libunwind.
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.  */
+
+#include "libunwind_i.h"
+
+int
+unw_set_caching_policy (unw_addr_space_t as, unw_caching_policy_t policy)
+{
+  if (!tdep_init_done)
+    tdep_init ();
+
+#if !(defined(HAVE___THREAD) && HAVE___THREAD)
+  if (policy == UNW_CACHE_PER_THREAD)
+    policy = UNW_CACHE_GLOBAL;
+#endif
+
+  if (policy == as->caching_policy)
+    return 0;   /* no change */
+
+  as->caching_policy = policy;
+  /* Ensure caches are empty (and initialized).  */
+  unw_flush_cache (as, 0, 0);
+  return 0;
+}