[Lldb-commits] [lldb] [llvm] [lldb] Add target groups for related targets (PR #229180)

[satyanarayana reddy janga via lldb-commits]

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@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+// 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_TARGET_TARGETGROUP_H
+#define LLDB_TARGET_TARGETGROUP_H
+
+#include "lldb/lldb-forward.h"
+#include "llvm/ADT/StringRef.h"
+#include "llvm/Support/Error.h"
+
+#include <memory>
+#include <mutex>
+#include <optional>
+#include <string>
+#include <utility>
+#include <vector>
+
+namespace lldb_private {
+
+/// A group of related targets and the roles they play in that relationship.
+class TargetGroup : public std::enable_shared_from_this<TargetGroup> {
+public:
+  /// Describes the part a target plays in this group.
+  enum class Role {
+    CPU,
+    Accelerator,
+  };
+
+  /// Target groups have identity and maintain backlinks in their member
+  /// targets, so they cannot be copied or moved. Create one with
+  /// Debugger::GetTargetGroupList().CreateTargetGroup().
+  TargetGroup(const TargetGroup &) = delete;
+  TargetGroup &operator=(const TargetGroup &) = delete;
+  TargetGroup(TargetGroup &&) = delete;
+  TargetGroup &operator=(TargetGroup &&) = delete;
+
+  llvm::StringRef GetDescription() const { return m_description; }
+
+  /// Add \p target_sp to the group with \p role. Adding an existing member
+  /// succeeds only when its role matches \p role.
+  llvm::Error AddTarget(const lldb::TargetSP &target_sp, Role role);
+
+  /// Remove \p target_sp from the group.
+  bool RemoveTarget(const lldb::TargetSP &target_sp);
+
+  /// Return the role assigned to \p target_sp, if it is a member.
+  std::optional<Role> GetRole(const lldb::TargetSP &target_sp) const;
+
+  /// Return every live target in the group.
+  std::vector<lldb::TargetSP> GetTargets() const;
+
+  /// Return live targets whose role is \p role.
+  std::vector<lldb::TargetSP> GetTargets(Role role) const;
+
+private:
+  friend class TargetGroupList;
+
+  struct Entry {
+    lldb::TargetWP target_wp;
+    Role role;
+  };
+
+  TargetGroup(const lldb::DebuggerSP &debugger_sp, llvm::StringRef description,
+              std::shared_ptr<std::recursive_mutex> mutex)
+      : m_debugger_wp(debugger_sp), m_description(description),
+        m_mutex(std::move(mutex)) {}
+
+  void RemoveExpiredTargets() const;
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satyajanga wrote:

removed it.

https://github.com/llvm/llvm-project/pull/229180