Import LLDB as of upstream SVN r225923 (git 2b588ecd)vendor/lldb/lldb-r225923

This corresponds with the branchpoint for the 3.6 release.
A number of files not required for the FreeBSD build have been removed.

Sponsored by:	DARPA, AFRL

6 files changed, 262 insertions, 15 deletions

diff --git a/include/lldb/Host/posix/ConnectionFileDescriptorPosix.h b/include/lldb/Host/posix/ConnectionFileDescriptorPosix.h
new file mode 100644
index 000000000000..4d326d71fa75
--- /dev/null
+++ b/include/lldb/Host/posix/ConnectionFileDescriptorPosix.h
@@ -0,0 +1,108 @@
+//===-- ConnectionFileDescriptorPosix.h -------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef liblldb_Host_posix_ConnectionFileDescriptorPosix_h_
+#define liblldb_Host_posix_ConnectionFileDescriptorPosix_h_
+
+// C++ Includes
+#include <atomic>
+#include <memory>
+
+#include "lldb/lldb-forward.h"
+
+// Other libraries and framework includes
+// Project includes
+#include "lldb/Core/Connection.h"
+#include "lldb/Host/Mutex.h"
+#include "lldb/Host/Pipe.h"
+#include "lldb/Host/Predicate.h"
+#include "lldb/Host/IOObject.h"
+
+namespace lldb_private
+{
+
+class Error;
+class Socket;
+class SocketAddress;
+
+class ConnectionFileDescriptor : public Connection
+{
+  public:
+    ConnectionFileDescriptor(bool child_processes_inherit = false);
+
+    ConnectionFileDescriptor(int fd, bool owns_fd);
+
+    virtual ~ConnectionFileDescriptor();
+
+    virtual bool IsConnected() const;
+
+    virtual lldb::ConnectionStatus Connect(const char *s, Error *error_ptr);
+
+    virtual lldb::ConnectionStatus Disconnect(Error *error_ptr);
+
+    virtual size_t Read(void *dst, size_t dst_len, uint32_t timeout_usec, lldb::ConnectionStatus &status, Error *error_ptr);
+
+    virtual size_t Write(const void *src, size_t src_len, lldb::ConnectionStatus &status, Error *error_ptr);
+
+    lldb::ConnectionStatus BytesAvailable(uint32_t timeout_usec, Error *error_ptr);
+
+    bool InterruptRead();
+
+    lldb::IOObjectSP
+    GetReadObject()
+    {
+        return m_read_sp;
+    }
+    const lldb::IOObjectSP
+    GetReadObject() const
+    {
+        return m_read_sp;
+    }
+
+    uint16_t GetListeningPort(uint32_t timeout_sec);
+
+    bool GetChildProcessesInherit() const;
+    void SetChildProcessesInherit(bool child_processes_inherit);
+
+  protected:
+    void OpenCommandPipe();
+
+    void CloseCommandPipe();
+
+    lldb::ConnectionStatus SocketListen(const char *host_and_port, Error *error_ptr);
+
+    lldb::ConnectionStatus ConnectTCP(const char *host_and_port, Error *error_ptr);
+
+    lldb::ConnectionStatus ConnectUDP(const char *args, Error *error_ptr);
+
+    lldb::ConnectionStatus NamedSocketConnect(const char *socket_name, Error *error_ptr);
+
+    lldb::ConnectionStatus NamedSocketAccept(const char *socket_name, Error *error_ptr);
+
+    lldb::IOObjectSP m_read_sp;
+    lldb::IOObjectSP m_write_sp;
+
+    Predicate<uint16_t> m_port_predicate; // Used when binding to port zero to wait for the thread
+                                          // that creates the socket, binds and listens to resolve
+                                          // the port number.
+
+    Pipe m_pipe;
+    Mutex m_mutex;
+    std::atomic<bool> m_shutting_down; // This marks that we are shutting down so if we get woken up from
+                                       // BytesAvailable to disconnect, we won't try to read again.
+    bool m_waiting_for_accept;
+    bool m_child_processes_inherit;
+
+  private:
+    DISALLOW_COPY_AND_ASSIGN(ConnectionFileDescriptor);
+};
+
+} // namespace lldb_private
+
+#endif // liblldb_ConnectionFileDescriptor_h_
diff --git a/include/lldb/Host/posix/HostInfoPosix.h b/include/lldb/Host/posix/HostInfoPosix.h
index 6e0dcbe48021..9524a2a2481d 100644
--- a/include/lldb/Host/posix/HostInfoPosix.h
+++ b/include/lldb/Host/posix/HostInfoPosix.h
@@ -10,6 +10,7 @@
 #ifndef lldb_Host_posix_HostInfoPosix_h_
 #define lldb_Host_posix_HostInfoPosix_h_
 
+#include "lldb/Host/FileSpec.h"
 #include "lldb/Host/HostInfoBase.h"
 
 namespace lldb_private
@@ -30,6 +31,8 @@ class HostInfoPosix : public HostInfoBase
     static uint32_t GetEffectiveUserID();
     static uint32_t GetEffectiveGroupID();
 
+    static FileSpec GetDefaultShell();
+
   protected:
     static bool ComputeSupportExeDirectory(FileSpec &file_spec);
     static bool ComputeHeaderDirectory(FileSpec &file_spec);
diff --git a/include/lldb/Host/posix/HostProcessPosix.h b/include/lldb/Host/posix/HostProcessPosix.h
index aa003ee4845e..8c1b0599e114 100644
--- a/include/lldb/Host/posix/HostProcessPosix.h
+++ b/include/lldb/Host/posix/HostProcessPosix.h
@@ -12,34 +12,30 @@
 
 #include "lldb/lldb-types.h"
 #include "lldb/Core/Error.h"
-#include "lldb/Target/ProcessLaunchInfo.h"
+#include "lldb/Host/HostNativeProcessBase.h"
 
 namespace lldb_private
 {
 
 class FileSpec;
 
-class HostProcessPosix
+class HostProcessPosix : public HostNativeProcessBase
 {
   public:
-    static const lldb::pid_t kInvalidProcessId;
-
     HostProcessPosix();
-    ~HostProcessPosix();
-
-    Error Signal(int signo) const;
-    static Error Signal(lldb::pid_t pid, int signo);
+    HostProcessPosix(lldb::process_t process);
+    virtual ~HostProcessPosix();
 
-    Error Create(lldb::pid_t pid);
-    Error Terminate(int signo);
-    Error GetMainModule(FileSpec &file_spec) const;
+    virtual Error Signal(int signo) const;
+    static Error Signal(lldb::process_t process, int signo);
 
-    lldb::pid_t GetProcessId() const;
-    bool IsRunning() const;
+    virtual Error Terminate();
+    virtual Error GetMainModule(FileSpec &file_spec) const;
 
-  private:
+    virtual lldb::pid_t GetProcessId() const;
+    virtual bool IsRunning() const;
 
-    lldb::pid_t m_pid;
+    virtual HostThread StartMonitoring(HostProcess::MonitorCallback callback, void *callback_baton, bool monitor_signals);
 };
 }
 
diff --git a/include/lldb/Host/posix/HostThreadPosix.h b/include/lldb/Host/posix/HostThreadPosix.h
new file mode 100644
index 000000000000..e0eaedf73be2
--- /dev/null
+++ b/include/lldb/Host/posix/HostThreadPosix.h
@@ -0,0 +1,34 @@
+//===-- HostThreadPosix.h -------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef lldb_Host_posix_HostThreadPosix_h_
+#define lldb_Host_posix_HostThreadPosix_h_
+
+#include "lldb/Host/HostNativeThreadBase.h"
+
+namespace lldb_private
+{
+
+class HostThreadPosix : public HostNativeThreadBase
+{
+    DISALLOW_COPY_AND_ASSIGN(HostThreadPosix);
+
+  public:
+    HostThreadPosix();
+    HostThreadPosix(lldb::thread_t thread);
+    virtual ~HostThreadPosix();
+
+    virtual Error Join(lldb::thread_result_t *result);
+    virtual Error Cancel();
+
+    Error Detach();
+};
+}
+
+#endif
diff --git a/include/lldb/Host/posix/PipePosix.h b/include/lldb/Host/posix/PipePosix.h
new file mode 100644
index 000000000000..0ab3ff7f6775
--- /dev/null
+++ b/include/lldb/Host/posix/PipePosix.h
@@ -0,0 +1,81 @@
+//===-- PipePosix.h ---------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef liblldb_Host_posix_PipePosix_h_
+#define liblldb_Host_posix_PipePosix_h_
+#if defined(__cplusplus)
+
+#include "lldb/Host/PipeBase.h"
+
+namespace lldb_private {
+
+//----------------------------------------------------------------------
+/// @class PipePosix PipePosix	.h "lldb/Host/posix/PipePosix.h"
+/// @brief A posix-based implementation of Pipe, a class that abtracts
+///        unix style pipes.
+///
+/// A class that abstracts the LLDB core from host pipe functionality.
+//----------------------------------------------------------------------
+class PipePosix : public PipeBase
+{
+public:
+    static int kInvalidDescriptor;
+
+    PipePosix();
+
+    ~PipePosix() override;
+
+    Error
+    CreateNew(bool child_process_inherit) override;
+    Error
+    CreateNew(llvm::StringRef name, bool child_process_inherit) override;
+    Error
+    OpenAsReader(llvm::StringRef name, bool child_process_inherit) override;
+    Error
+    OpenAsWriterWithTimeout(llvm::StringRef name, bool child_process_inherit, const std::chrono::microseconds &timeout) override;
+
+    bool
+    CanRead() const override;
+    bool
+    CanWrite() const override;
+
+    int
+    GetReadFileDescriptor() const override;
+    int
+    GetWriteFileDescriptor() const override;
+    int
+    ReleaseReadFileDescriptor() override;
+    int
+    ReleaseWriteFileDescriptor() override;
+
+    // Close both descriptors
+    void
+    Close() override;
+
+    Error
+    Delete(llvm::StringRef name) override;
+
+    Error
+    Write(const void *buf, size_t size, size_t &bytes_written) override;
+    Error
+    ReadWithTimeout(void *buf, size_t size, const std::chrono::microseconds &timeout, size_t &bytes_read) override;
+
+private:
+    void
+    CloseReadFileDescriptor();
+    void
+    CloseWriteFileDescriptor();
+
+    int m_fds[2];
+};
+
+} // namespace lldb_private
+
+#endif  // #if defined(__cplusplus)
+#endif  // liblldb_Host_posix_PipePosix_h_
diff --git a/include/lldb/Host/posix/ProcessLauncherPosix.h b/include/lldb/Host/posix/ProcessLauncherPosix.h
new file mode 100644
index 000000000000..c0e2a36e4e5e
--- /dev/null
+++ b/include/lldb/Host/posix/ProcessLauncherPosix.h
@@ -0,0 +1,25 @@
+//===-- ProcessLauncherPosix.h ----------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef lldb_Host_posix_ProcessLauncherPosix_h_
+#define lldb_Host_posix_ProcessLauncherPosix_h_
+
+#include "lldb/Host/ProcessLauncher.h"
+
+namespace lldb_private
+{
+
+class ProcessLauncherPosix : public ProcessLauncher
+{
+  public:
+    virtual HostProcess LaunchProcess(const ProcessLaunchInfo &launch_info, Error &error);
+};
+}
+
+#endif