Add GDB remote packet reproducer.

llvm-svn: 346780

1 files changed, 206 insertions, 0 deletions

diff --git a/lldb/source/Commands/CommandObjectReproducer.cpp b/lldb/source/Commands/CommandObjectReproducer.cpp
new file mode 100644
index 00000000000..e69a6308892
--- /dev/null
+++ b/lldb/source/Commands/CommandObjectReproducer.cpp
@@ -0,0 +1,206 @@
+//===-- CommandObjectReproducer.cpp -----------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "CommandObjectReproducer.h"
+
+#include "lldb/Utility/Reproducer.h"
+
+#include "lldb/Interpreter/CommandReturnObject.h"
+#include "lldb/Interpreter/OptionArgParser.h"
+#include "lldb/Interpreter/OptionGroupBoolean.h"
+
+using namespace lldb;
+using namespace lldb_private;
+
+static void AppendErrorToResult(llvm::Error e, CommandReturnObject &result) {
+  std::string error_str = llvm::toString(std::move(e));
+  result.AppendErrorWithFormat("%s", error_str.c_str());
+}
+
+class CommandObjectReproducerCaptureEnable : public CommandObjectParsed {
+public:
+  CommandObjectReproducerCaptureEnable(CommandInterpreter &interpreter)
+      : CommandObjectParsed(interpreter, "reproducer capture enable",
+                            "Enable gathering information for reproducer",
+                            nullptr) {}
+
+  ~CommandObjectReproducerCaptureEnable() override = default;
+
+protected:
+  bool DoExecute(Args &command, CommandReturnObject &result) override {
+    if (!command.empty()) {
+      result.AppendErrorWithFormat("'%s' takes no arguments",
+                                   m_cmd_name.c_str());
+      return false;
+    }
+
+    auto &r = repro::Reproducer::Instance();
+    if (auto e = r.SetGenerateReproducer(true)) {
+      AppendErrorToResult(std::move(e), result);
+      return false;
+    }
+
+    result.SetStatus(eReturnStatusSuccessFinishNoResult);
+    return result.Succeeded();
+  }
+};
+
+class CommandObjectReproducerCaptureDisable : public CommandObjectParsed {
+public:
+  CommandObjectReproducerCaptureDisable(CommandInterpreter &interpreter)
+      : CommandObjectParsed(interpreter, "reproducer capture enable",
+                            "Disable gathering information for reproducer",
+                            nullptr) {}
+
+  ~CommandObjectReproducerCaptureDisable() override = default;
+
+protected:
+  bool DoExecute(Args &command, CommandReturnObject &result) override {
+    if (!command.empty()) {
+      result.AppendErrorWithFormat("'%s' takes no arguments",
+                                   m_cmd_name.c_str());
+      return false;
+    }
+
+    auto &r = repro::Reproducer::Instance();
+    if (auto e = r.SetGenerateReproducer(false)) {
+      AppendErrorToResult(std::move(e), result);
+      return false;
+    }
+
+    result.SetStatus(eReturnStatusSuccessFinishNoResult);
+    return result.Succeeded();
+  }
+};
+
+class CommandObjectReproducerGenerate : public CommandObjectParsed {
+public:
+  CommandObjectReproducerGenerate(CommandInterpreter &interpreter)
+      : CommandObjectParsed(interpreter, "reproducer generate",
+                            "Generate reproducer on disk.", nullptr) {}
+
+  ~CommandObjectReproducerGenerate() override = default;
+
+protected:
+  bool DoExecute(Args &command, CommandReturnObject &result) override {
+    if (!command.empty()) {
+      result.AppendErrorWithFormat("'%s' takes no arguments",
+                                   m_cmd_name.c_str());
+      return false;
+    }
+
+    auto &r = repro::Reproducer::Instance();
+    if (auto generator = r.GetGenerator()) {
+      generator->Keep();
+    } else {
+      result.AppendErrorWithFormat("Unable to get the reproducer generator");
+      return false;
+    }
+
+    result.GetOutputStream()
+        << "Reproducer written to '" << r.GetReproducerPath() << "'\n";
+
+    result.SetStatus(eReturnStatusSuccessFinishResult);
+    return result.Succeeded();
+  }
+};
+
+class CommandObjectReproducerReplay : public CommandObjectParsed {
+public:
+  CommandObjectReproducerReplay(CommandInterpreter &interpreter)
+      : CommandObjectParsed(interpreter, "reproducer capture",
+                            "Enable or disable gathering of information needed "
+                            "to generate a reproducer.",
+                            nullptr) {
+    CommandArgumentEntry arg1;
+    CommandArgumentData path_arg;
+
+    // Define the first (and only) variant of this arg.
+    path_arg.arg_type = eArgTypePath;
+    path_arg.arg_repetition = eArgRepeatPlain;
+
+    // There is only one variant this argument could be; put it into the
+    // argument entry.
+    arg1.push_back(path_arg);
+
+    // Push the data for the first argument into the m_arguments vector.
+    m_arguments.push_back(arg1);
+  }
+
+  ~CommandObjectReproducerReplay() override = default;
+
+protected:
+  bool DoExecute(Args &command, CommandReturnObject &result) override {
+    if (command.empty()) {
+      result.AppendErrorWithFormat(
+          "'%s' takes a single argument: the reproducer path",
+          m_cmd_name.c_str());
+      return false;
+    }
+
+    auto &r = repro::Reproducer::Instance();
+
+    if (auto e = r.SetReplayReproducer(true)) {
+      std::string error_str = llvm::toString(std::move(e));
+      result.AppendErrorWithFormat("%s", error_str.c_str());
+      return false;
+    }
+
+    if (auto loader = r.GetLoader()) {
+      const char *repro_path = command.GetArgumentAtIndex(0);
+      if (auto e = loader->LoadIndex(FileSpec(repro_path))) {
+        std::string error_str = llvm::toString(std::move(e));
+        result.AppendErrorWithFormat("Unable to load reproducer: %s",
+                                     error_str.c_str());
+        return false;
+      }
+    } else {
+      result.AppendErrorWithFormat("Unable to get the reproducer loader");
+      return false;
+    }
+
+    result.SetStatus(eReturnStatusSuccessFinishNoResult);
+    return result.Succeeded();
+  }
+};
+
+class CommandObjectReproducerCapture : public CommandObjectMultiword {
+private:
+public:
+  CommandObjectReproducerCapture(CommandInterpreter &interpreter)
+      : CommandObjectMultiword(
+            interpreter, "reproducer capture",
+            "Manage gathering of information needed to generate a reproducer.",
+            NULL) {
+    LoadSubCommand(
+        "enable",
+        CommandObjectSP(new CommandObjectReproducerCaptureEnable(interpreter)));
+    LoadSubCommand("disable",
+                   CommandObjectSP(
+                       new CommandObjectReproducerCaptureDisable(interpreter)));
+  }
+
+  ~CommandObjectReproducerCapture() {}
+};
+
+CommandObjectReproducer::CommandObjectReproducer(
+    CommandInterpreter &interpreter)
+    : CommandObjectMultiword(interpreter, "reproducer",
+                             "Commands controlling LLDB reproducers.",
+                             "log <subcommand> [<command-options>]") {
+  LoadSubCommand("capture", CommandObjectSP(new CommandObjectReproducerCapture(
+                                interpreter)));
+  LoadSubCommand(
+      "generate",
+      CommandObjectSP(new CommandObjectReproducerGenerate(interpreter)));
+  LoadSubCommand("replay", CommandObjectSP(
+                               new CommandObjectReproducerReplay(interpreter)));
+}
+
+CommandObjectReproducer::~CommandObjectReproducer() = default;