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 20 #include "absl/base/config.h" 21 22 namespace absl { 23 ABSL_NAMESPACE_BEGIN 24 namespace debugging_internal { 25 26 // Returns the program counter from signal context, or nullptr if 27 // unknown. `vuc` is a ucontext_t*. We use void* to avoid the use of 28 // ucontext_t on non-POSIX systems. 29 void* GetProgramCounter(void* vuc); 30 31 // Uses `writerfn` to dump the program counter, stack trace, and stack 32 // frame sizes. 33 void DumpPCAndFrameSizesAndStackTrace( 34 void* pc, void* const stack[], int frame_sizes[], int depth, 35 int min_dropped_frames, bool symbolize_stacktrace, 36 void (*writerfn)(const char*, void*), void* writerfn_arg); 37 38 } // namespace debugging_internal 39 ABSL_NAMESPACE_END 40 } // namespace absl 41 42 #endif // ABSL_DEBUGGING_INTERNAL_EXAMINE_STACK_H_ 43