Common string entry (#971)

* Common string entry

* Add lib/common/string_entry.cpp + return const string*

source/lib/common/CMakeLists.txt

@@ -4,7 +4,7 @@
 rocprofiler_activate_clang_tidy()
 
 set(common_sources demangle.cpp elf_utils.cpp environment.cpp logging.cpp
-                   static_object.cpp utility.cpp)
+                   static_object.cpp string_entry.cpp utility.cpp)
 set(common_headers
     abi.hpp
     defines.hpp
@@ -16,6 +16,7 @@ set(common_headers
     mpl.hpp
     scope_destructor.hpp
     static_object.hpp
+    string_entry.hpp
     stringize_arg.hpp
     synchronized.hpp
     units.hpp

source/lib/common/string_entry.cpp

@@ -0,0 +1,74 @@
+// MIT License
+//
+// Copyright (c) 2023 Advanced Micro Devices, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#include "lib/common/string_entry.hpp"
+#include "lib/common/scope_destructor.hpp"
+#include "lib/common/static_object.hpp"
+
+#include <memory>
+#include <shared_mutex>
+#include <string>
+#include <string_view>
+#include <unordered_map>
+#include <utility>
+
+namespace rocprofiler
+{
+namespace common
+{
+namespace
+{
+using name_array_t = std::unordered_map<size_t, std::unique_ptr<std::string>>;
+
+auto&
+get_sync()
+{
+    static auto*& _v = static_object<std::shared_mutex>::construct();
+    return *CHECK_NOTNULL(_v);
+}
+
+name_array_t*
+get_string_array()
+{
+    static auto*& _v = static_object<name_array_t>::construct();
+    return _v;
+}
+}  // namespace
+
+const std::string*
+get_string_entry(std::string_view name)
+{
+    if(!get_string_array()) return nullptr;
+
+    auto _hash_v = std::hash<std::string_view>{}(name);
+    {
+        auto _lk = std::shared_lock<std::shared_mutex>{get_sync()};
+        if(get_string_array()->count(_hash_v) > 0) return get_string_array()->at(_hash_v).get();
+    }
+
+    auto _lk = std::unique_lock<std::shared_mutex>{get_sync()};
+    return get_string_array()
+        ->emplace(_hash_v, std::make_unique<std::string>(name))
+        .first->second.get();
+}
+}  // namespace common
+}  // namespace rocprofiler

source/lib/common/string_entry.hpp

@@ -0,0 +1,35 @@
+// MIT License
+//
+// Copyright (c) 2023 Advanced Micro Devices, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#pragma once
+
+#include <string>
+#include <string_view>
+
+namespace rocprofiler
+{
+namespace common
+{
+const std::string*
+get_string_entry(std::string_view name);
+}  // namespace common
+}  // namespace rocprofiler