Create separate Android.mk for main build targets

The runtime, compiler, dex2oat, and oatdump now are in seperate trees
to prevent dependency creep.  They can now be individually built
without rebuilding the rest of the art projects. dalvikvm and jdwpspy
were already this way. Builds in the art directory should behave as
before, building everything including tests.

Change-Id: Ic6b1151e5ed0f823c3dd301afd2b13eb2d8feb81

1 files changed, 63 insertions, 0 deletions

diff --git a/runtime/signal_catcher.h b/runtime/signal_catcher.h
new file mode 100644
index 0000000..de0220b
--- /dev/null
+++ b/runtime/signal_catcher.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2008 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_SRC_SIGNAL_CATCHER_H_
+#define ART_SRC_SIGNAL_CATCHER_H_
+
+#include "base/mutex.h"
+
+namespace art {
+
+class Runtime;
+class SignalSet;
+class Thread;
+
+/*
+ * A daemon thread that catches signals and does something useful. For
+ * example, when a SIGQUIT (Ctrl-\) arrives, we suspend and dump the
+ * status of all threads.
+ */
+class SignalCatcher {
+ public:
+  explicit SignalCatcher(const std::string& stack_trace_file);
+  ~SignalCatcher();
+
+  void HandleSigQuit() LOCKS_EXCLUDED(Locks::mutator_lock_,
+                                      Locks::thread_list_lock_,
+                                      Locks::thread_suspend_count_lock_);
+
+
+ private:
+  static void* Run(void* arg);
+
+  void HandleSigUsr1();
+  void Output(const std::string& s);
+  void SetHaltFlag(bool new_value);
+  bool ShouldHalt();
+  int WaitForSignal(Thread* self, SignalSet& signals);
+
+  std::string stack_trace_file_;
+
+  mutable Mutex lock_ DEFAULT_MUTEX_ACQUIRED_AFTER;
+  ConditionVariable cond_ GUARDED_BY(lock_);
+  bool halt_ GUARDED_BY(lock_);
+  pthread_t pthread_ GUARDED_BY(lock_);
+  Thread* thread_ GUARDED_BY(lock_);
+};
+
+}  // namespace art
+
+#endif  // ART_SRC_SIGNAL_CATCHER_H_