Add SBPRogress class to enable commands to async report to lldb-dap their progress

Author: Jlalond

lldb/bindings/headers.swig

@@ -52,6 +52,7 @@
 #include "lldb/API/SBProcess.h"
 #include "lldb/API/SBProcessInfo.h"
 #include "lldb/API/SBProcessInfoList.h"
+#include "lldb/API/SBProgress.h"
 #include "lldb/API/SBQueue.h"
 #include "lldb/API/SBQueueItem.h"
 #include "lldb/API/SBReproducer.h"

lldb/bindings/interface/SBProgressDocstrings.i

@@ -0,0 +1,14 @@
+%feature("docstring",
+"A Progress indicator helper class.
+
+Any potentially long running sections of code in LLDB should report
+progress so that clients are aware of delays that might appear during
+debugging. Delays commonly include indexing debug information, parsing
+symbol tables for object files, downloading symbols from remote
+repositories, and many more things.
+
+The Progress class helps make sure that progress is correctly reported
+and will always send an initial progress update, updates when
+Progress::Increment() is called, and also will make sure that a progress
+completed update is reported even if the user doesn't explicitly cause one
+to be sent.") lldb::SBProgress

lldb/bindings/interfaces.swig

@@ -54,6 +54,7 @@
 %include "./interface/SBPlatformDocstrings.i"
 %include "./interface/SBProcessDocstrings.i"
 %include "./interface/SBProcessInfoDocstrings.i"
+%include "./interface/SBProgressDocstrings.i"
 %include "./interface/SBQueueDocstrings.i"
 %include "./interface/SBQueueItemDocstrings.i"
 %include "./interface/SBReproducerDocstrings.i"
@@ -133,6 +134,7 @@
 %include "lldb/API/SBProcess.h"
 %include "lldb/API/SBProcessInfo.h"
 %include "lldb/API/SBProcessInfoList.h"
+%include "lldb/API/SBProgress.h"
 %include "lldb/API/SBQueue.h"
 %include "lldb/API/SBQueueItem.h"
 %include "lldb/API/SBReproducer.h"

lldb/include/lldb/API/SBDebugger.h

@@ -203,7 +203,7 @@ class LLDB_API SBDebugger {
   lldb::SBCommandInterpreter GetCommandInterpreter();
 
   void HandleCommand(const char *command);
-  
+
   void RequestInterrupt();
   void CancelInterruptRequest();
   bool InterruptRequested();
@@ -517,6 +517,7 @@ class LLDB_API SBDebugger {
   friend class SBPlatform;
   friend class SBTarget;
   friend class SBTrace;
+  friend class SBProgress;
 
   lldb::SBTarget FindTargetWithLLDBProcess(const lldb::ProcessSP &processSP);
 

lldb/include/lldb/API/SBProgress.h

@@ -0,0 +1,56 @@
+//===-- SBProgress.h --------------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLDB_API_SBPROGRESS_H
+#define LLDB_API_SBPROGRESS_H
+
+#include "lldb/API/SBDebugger.h"
+#include "lldb/API/SBDefines.h"
+
+namespace lldb {
+
+/// A SB API Wrapper around lldb_private::Progress
+class LLDB_API SBProgress {
+public:
+  /// Construct a progress object with a title, details and a given debugger.
+  /// \param title
+  ///   The title of the progress object.
+  /// \param details
+  ///   The details of the progress object.
+  /// \param debugger
+  ///   The debugger for this progress object to report to.
+  SBProgress(const char *title, const char *details, SBDebugger &debugger);
+
+  /// Construct a progress object with a title, details, the total units of work
+  /// to be done, and a given debugger.
+  /// \param title
+  ///   The title of the progress object.
+  /// \param details
+  ///   The details of the progress object.
+  /// \param total_units
+  ///   The total number of units of work to be done.
+  /// \param debugger
+  ///   The debugger for this progress object to report to.
+  SBProgress(const char *title, const char *details, uint64_t total_units,
+             SBDebugger &debugger);
+  SBProgress(const lldb::SBProgress &rhs);
+  ~SBProgress();
+
+  const SBProgress &operator=(const lldb::SBProgress &rhs);
+
+  void Increment(uint64_t amount = 1, const char *description = nullptr);
+
+protected:
+  lldb_private::Progress &ref() const;
+
+private:
+  std::unique_ptr<lldb_private::Progress> m_opaque_up;
+}; // SBProgress
+} // namespace lldb
+
+#endif // LLDB_API_SBPROGRESS_H

lldb/include/lldb/lldb-forward.h

@@ -233,6 +233,7 @@ class Symtab;
 class SyntheticChildren;
 class SyntheticChildrenFrontEnd;
 class SystemRuntime;
+class Progress;
 class Target;
 class TargetList;
 class TargetProperties;

lldb/source/API/CMakeLists.txt

@@ -83,6 +83,7 @@ add_lldb_library(liblldb SHARED ${option_framework}
   SBModule.cpp
   SBModuleSpec.cpp
   SBPlatform.cpp
+  SBProgress.cpp
   SBProcess.cpp
   SBProcessInfo.cpp
   SBProcessInfoList.cpp

lldb/source/API/SBProgress.cpp

@@ -0,0 +1,34 @@
+//===-- SBProgress.cpp -------------------------------------------*- C++
+//-*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "lldb/API/SBProgress.h"
+#include "lldb/Core/Progress.h"
+#include "lldb/Utility/Instrumentation.h"
+
+using namespace lldb;
+
+SBProgress::SBProgress(const char *title, const char *details,
+                       SBDebugger &debugger) {
+  LLDB_INSTRUMENT_VA(this, title, details, debugger)
+  m_opaque_up = std::make_unique<lldb_private::Progress>(
+      title, details, std::nullopt, debugger.get());
+}
+
+SBProgress::SBProgress(const char *title, const char *details,
+                       uint64_t total_units, SBDebugger &debugger) {
+  LLDB_INSTRUMENT_VA(this, title, details, total_units, debugger)
+  m_opaque_up = std::make_unique<lldb_private::Progress>(
+      title, details, total_units, debugger.get());
+}
+
+void SBProgress::Increment(uint64_t amount, const char *description) {
+  m_opaque_up->Increment(amount, description);
+}
+
+lldb_private::Progress &SBProgress::ref() const { return *m_opaque_up; }