Implement the linux debugger wire protocol.

runtime/bin/dbg_connection_linux.h

Index: runtime/bin/dbg_connection_linux.h
===================================================================
--- runtime/bin/dbg_connection_linux.h	(revision 8867)
+++ runtime/bin/dbg_connection_linux.h	(working copy)
@@ -5,6 +5,7 @@
 #ifndef BIN_DBG_CONNECTION_LINUX_H_
 #define BIN_DBG_CONNECTION_LINUX_H_
 

[siva, 2012/06/20 00:53:31]

extra blank line?

[hausner, 2012/06/20 16:05:58]

Done.

+
 #include <arpa/inet.h>
 #include <netdb.h>
 #include <sys/socket.h>
@@ -13,6 +14,17 @@
 class DebuggerConnectionImpl {
  public:
   static void StartHandler(int port_number);
+
+ private:
+  static void SetupPollQueue();
+  static void HandleEvent(struct epoll_event* event);
+  static void Handler(uword args);
+
+  // File descriptors for pipes used to communicate with the debugger thread.
+  static int wakeup_fds_[2];
+
+  // File descriptor for the polling queue.
+  static int epoll_fd_;
 };
 
 #endif  // BIN_DBG_CONNECTION_LINUX_H_