2 * Copyright 2013 Facebook, Inc.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 // Must be first to ensure that UNW_LOCAL_ONLY is defined
18 #define UNW_LOCAL_ONLY 1
19 #include <libunwind.h>
21 #include "folly/experimental/symbolizer/StackTrace.h"
23 namespace folly { namespace symbolizer {
25 ssize_t getStackTrace(uintptr_t* addresses, size_t maxAddresses) {
26 static_assert(sizeof(uintptr_t) == sizeof(void*),
27 "uinptr_t / pointer size mismatch");
28 int r = unw_backtrace(reinterpret_cast<void**>(addresses), maxAddresses);
29 return r < 0 ? -1 : r;