upload android base code part3

android/art/runtime/runtime_common.h

@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_RUNTIME_RUNTIME_COMMON_H_
+#define ART_RUNTIME_RUNTIME_COMMON_H_
+
+// Code shared by runtime/runtime_android.cc and runtime/runtime_linux.cc.
+
+#if defined(__APPLE__)
+// On macOS, _XOPEN_SOURCE must be defined to access ucontext
+// routines, as they are considered deprecated on that platform.
+#define _XOPEN_SOURCE
+#endif
+
+#include <sys/utsname.h>
+#include <ucontext.h>
+
+#include <iomanip>
+
+#include "base/dumpable.h"
+#include "native_stack_dump.h"
+#include "utils.h"
+
+namespace art {
+
+struct Backtrace {
+ public:
+  explicit Backtrace(void* raw_context) : raw_context_(raw_context) {}
+  void Dump(std::ostream& os) const {
+    DumpNativeStack(os, GetTid(), nullptr, "\t", nullptr, raw_context_);
+  }
+ private:
+  // Stores the context of the signal that was unexpected and will terminate the runtime. The
+  // DumpNativeStack code will take care of casting it to the expected type. This is required
+  // as our signal handler runs on an alternate stack.
+  void* raw_context_;
+};
+
+struct OsInfo {
+  void Dump(std::ostream& os) const {
+    utsname info;
+    uname(&info);
+    // Linux 2.6.38.8-gg784 (x86_64)
+    // Darwin 11.4.0 (x86_64)
+    os << info.sysname << " " << info.release << " (" << info.machine << ")";
+  }
+};
+
+const char* GetSignalName(int signal_number);
+const char* GetSignalCodeName(int signal_number, int signal_code);
+
+// Return the signal number we recognize as timeout. -1 means not active/supported.
+int GetTimeoutSignal();
+
+void HandleUnexpectedSignalCommon(int signal_number,
+                                  siginfo_t* info,
+                                  void* raw_context,
+                                  bool handle_timeout_signal,
+                                  bool dump_on_stderr);
+
+void InitPlatformSignalHandlersCommon(void (*newact)(int, siginfo_t*, void*),
+                                      struct sigaction* oldact,
+                                      bool handle_timeout_signal);
+
+}  // namespace art
+
+#endif  // ART_RUNTIME_RUNTIME_COMMON_H_