lli: Factor portable messaging into a new RPCChannel facility

The client and server now use a single unified low-level RPC core built around
LLVM's existing cross-platform abstractions.

llvm-svn: 199947

1 files changed, 51 insertions, 0 deletions

diff --git a/llvm/tools/lli/RPCChannel.h b/llvm/tools/lli/RPCChannel.h
new file mode 100644
index 00000000000..d04c8c25b49
--- /dev/null
+++ b/llvm/tools/lli/RPCChannel.h
@@ -0,0 +1,51 @@
+//===---------- RPCChannel.h - LLVM out-of-process JIT execution ----------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Definition of the RemoteTargetExternal class which executes JITed code in a
+// separate process from where it was built.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLI_RPCCHANNEL_H
+#define LLI_RPCCHANNEL_H
+
+#include <stdlib.h>
+#include <string>
+
+namespace llvm {
+
+class RPCChannel {
+public:
+  std::string ChildName;
+
+  RPCChannel() {}
+  ~RPCChannel();
+
+  static void ReportError(int rc, size_t Size, std::string &ErrorMsg);
+
+  /// Start the remote process.
+  ///
+  /// @returns True on success. On failure, ErrorMsg is updated with
+  ///          descriptive text of the encountered error.
+  bool createServer();
+
+  bool createClient();
+
+  // This will get filled in as a point to an OS-specific structure.
+  void *ConnectionData;
+
+  int WriteBytes(const void *Data, size_t Size);
+  int ReadBytes(void *Data, size_t Size);
+
+  void Wait();
+};
+
+} // end namespace llvm
+
+#endif // LLI_RPCCHANNEL_H