1//
2// Copyright 2018 The Abseil Authors.
3//
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
7//
8// https://www.apache.org/licenses/LICENSE-2.0
9//
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.
15//
16
17#ifndef ABSL_DEBUGGING_INTERNAL_EXAMINE_STACK_H_
18#define ABSL_DEBUGGING_INTERNAL_EXAMINE_STACK_H_
19
20namespace absl {
21namespace debugging_internal {
22
23// Returns the program counter from signal context, or nullptr if
24// unknown. `vuc` is a ucontext_t*. We use void* to avoid the use of
25// ucontext_t on non-POSIX systems.
26void* GetProgramCounter(void* vuc);
27
28// Uses `writerfn` to dump the program counter, stack trace, and stack
29// frame sizes.
30void DumpPCAndFrameSizesAndStackTrace(
31 void* pc, void* const stack[], int frame_sizes[], int depth,
32 int min_dropped_frames, bool symbolize_stacktrace,
33 void (*writerfn)(const char*, void*), void* writerfn_arg);
34
35} // namespace debugging_internal
36} // namespace absl
37
38#endif // ABSL_DEBUGGING_INTERNAL_EXAMINE_STACK_H_
39