00001 // 00002 // Copyright 2018 The Abseil Authors. 00003 // 00004 // Licensed under the Apache License, Version 2.0 (the "License"); 00005 // you may not use this file except in compliance with the License. 00006 // You may obtain a copy of the License at 00007 // 00008 // https://www.apache.org/licenses/LICENSE-2.0 00009 // 00010 // Unless required by applicable law or agreed to in writing, software 00011 // distributed under the License is distributed on an "AS IS" BASIS, 00012 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00013 // See the License for the specific language governing permissions and 00014 // limitations under the License. 00015 // 00016 00017 #ifndef ABSL_DEBUGGING_INTERNAL_EXAMINE_STACK_H_ 00018 #define ABSL_DEBUGGING_INTERNAL_EXAMINE_STACK_H_ 00019 00020 namespace absl { 00021 namespace debugging_internal { 00022 00023 // Returns the program counter from signal context, or nullptr if 00024 // unknown. `vuc` is a ucontext_t*. We use void* to avoid the use of 00025 // ucontext_t on non-POSIX systems. 00026 void* GetProgramCounter(void* vuc); 00027 00028 // Uses `writerfn` to dump the program counter, stack trace, and stack 00029 // frame sizes. 00030 void DumpPCAndFrameSizesAndStackTrace( 00031 void* pc, void* const stack[], int frame_sizes[], int depth, 00032 int min_dropped_frames, bool symbolize_stacktrace, 00033 void (*writerfn)(const char*, void*), void* writerfn_arg); 00034 00035 } // namespace debugging_internal 00036 } // namespace absl 00037 00038 #endif // ABSL_DEBUGGING_INTERNAL_EXAMINE_STACK_H_