1 /* 2 * Copyright (C) 2017 The Android Open Source Project 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 * http://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 ART_RUNTIME_RUNTIME_COMMON_H_ 18 #define ART_RUNTIME_RUNTIME_COMMON_H_ 19 20 // Code shared by runtime/runtime_android.cc and runtime/runtime_linux.cc. 21 22 #if defined(__APPLE__) 23 // On macOS, _XOPEN_SOURCE must be defined to access ucontext 24 // routines, as they are considered deprecated on that platform. 25 #define _XOPEN_SOURCE 26 #endif 27 28 #include <sys/utsname.h> 29 #include <ucontext.h> 30 31 #include <iomanip> 32 33 #include "base/dumpable.h" 34 #include "base/utils.h" 35 #include "native_stack_dump.h" 36 37 namespace art { 38 39 struct Backtrace { 40 public: BacktraceBacktrace41 explicit Backtrace(void* raw_context) : raw_context_(raw_context) {} DumpBacktrace42 void Dump(std::ostream& os) const { 43 // This is a backtrace from a crash, do not skip any frames in case the 44 // crash is in the unwinder itself. 45 DumpNativeStack(os, GetTid(), nullptr, "\t", nullptr, raw_context_, false); 46 } 47 private: 48 // Stores the context of the signal that was unexpected and will terminate the runtime. The 49 // DumpNativeStack code will take care of casting it to the expected type. This is required 50 // as our signal handler runs on an alternate stack. 51 void* raw_context_; 52 }; 53 54 struct OsInfo { DumpOsInfo55 void Dump(std::ostream& os) const { 56 utsname info; 57 uname(&info); 58 // Linux 2.6.38.8-gg784 (x86_64) 59 // Darwin 11.4.0 (x86_64) 60 os << info.sysname << " " << info.release << " (" << info.machine << ")"; 61 } 62 }; 63 64 const char* GetSignalName(int signal_number); 65 const char* GetSignalCodeName(int signal_number, int signal_code); 66 67 // Return the signal number we recognize as timeout. -1 means not active/supported. 68 int GetTimeoutSignal(); 69 70 void HandleUnexpectedSignalCommon(int signal_number, 71 siginfo_t* info, 72 void* raw_context, 73 bool handle_timeout_signal, 74 bool dump_on_stderr); 75 76 void InitPlatformSignalHandlersCommon(void (*newact)(int, siginfo_t*, void*), 77 struct sigaction* oldact, 78 bool handle_timeout_signal); 79 80 void FlagRuntimeAbort(); 81 82 } // namespace art 83 84 #endif // ART_RUNTIME_RUNTIME_COMMON_H_ 85