[clang-tools-extra] r366811 - [clangd] Log version, cwd, args, and transport on startup. NFC

[Sam McCall via cfe-commits]

Author: sammccall
Date: Tue Jul 23 07:30:28 2019
New Revision: 366811

URL: http://llvm.org/viewvc/llvm-project?rev=366811&view=rev
Log:
[clangd] Log version, cwd, args, and transport on startup. NFC

Reviewers: hokein

Subscribers: ilya-biryukov, MaskRay, jkorous, arphaman, kadircet, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D65146

Modified:
    clang-tools-extra/trunk/clangd/tool/ClangdMain.cpp

Modified: clang-tools-extra/trunk/clangd/tool/ClangdMain.cpp
URL: http://llvm.org/viewvc/llvm-project/clang-tools-extra/trunk/clangd/tool/ClangdMain.cpp?rev=366811&r1=366810&r2=366811&view=diff
==============================================================================
--- clang-tools-extra/trunk/clangd/tool/ClangdMain.cpp (original)
+++ clang-tools-extra/trunk/clangd/tool/ClangdMain.cpp Tue Jul 23 07:30:28 2019
@@ -423,6 +423,17 @@ int main(int argc, char *argv[]) {
   llvm::errs().SetBuffered();
   StreamLogger Logger(llvm::errs(), LogLevel);
   LoggingSession LoggingSession(Logger);
+  // Write some initial logs before we start doing any real work.
+  log("{0}", clang::getClangToolFullVersion("clangd"));
+  {
+    SmallString<128> CWD;
+    if (auto Err = llvm::sys::fs::current_path(CWD))
+      log("Working directory unknown: {0}", Err.message());
+    else
+      log("Working directory: {0}", CWD);
+  }
+  for (int I = 0; I < argc; ++I)
+    log("argv[{0}]: {1}", I, argv[I]);
 
   // If --compile-commands-dir arg was invoked, check value and override default
   // path.
@@ -501,12 +512,14 @@ int main(int argc, char *argv[]) {
   std::unique_ptr<Transport> TransportLayer;
   if (getenv("CLANGD_AS_XPC_SERVICE")) {
 #if CLANGD_BUILD_XPC
+    log("Starting LSP over XPC service");
     TransportLayer = newXPCTransport();
 #else
     llvm::errs() << "This clangd binary wasn't built with XPC support.\n";
     return (int)ErrorResultCode::CantRunAsXPCService;
 #endif
   } else {
+    log("Starting LSP over stdin/stdout");
     TransportLayer = newJSONTransport(
         stdin, llvm::outs(),
         InputMirrorStream ? InputMirrorStream.getPointer() : nullptr,