Add 'projects/rocprofiler-sdk/' from commit 'bf0fad1d5406fbc51403ba1aa9621a9d4a9bce2b'

git-subtree-dir: projects/rocprofiler-sdk
git-subtree-mainline: 50a90550e9
git-subtree-split: bf0fad1d54

projects/rocprofiler-sdk/source/lib/common/memory/pool.hpp

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+// MIT License
+//
+// Copyright (c) 2023-2025 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 "lib/common/defines.hpp"
+#include "lib/common/logging.hpp"
+
+#include <cstddef>
+#include <cstdint>
+#include <cstdlib>
+#include <memory>
+#include <stack>
+#include <stdexcept>
+
+namespace rocprofiler
+{
+namespace common
+{
+namespace memory
+{
+template <size_t BlockSize, size_t ReservedBlocks = 0>
+class pool
+{
+public:
+    explicit pool(size_t size)
+    : m_size(size)
+    {
+        for(size_t i = 0; i < ReservedBlocks; i++)
+        {
+            append();
+        }
+    }
+
+    void* allocate()
+    {
+        if(m_addrs.empty())
+        {
+            append();
+        }
+
+        auto* ptr = m_addrs.top();
+        m_addrs.pop();
+        return ptr;
+    }
+
+    void deallocate(void* ptr) { m_addrs.push(ptr); }
+
+    void rebind(size_t size)
+    {
+        if(!(m_addrs.empty() && m_blocks.empty()))
+        {
+            ROCP_FATAL << "cannot call pool::rebind() after alloc";
+        }
+
+        m_size = size;
+    }
+
+private:
+    // Refill the address stack by allocating another block of memory
+    void append()
+    {
+        auto block      = std::make_unique<uint8_t[]>(BlockSize);
+        auto total_size = BlockSize % m_size == 0 ? BlockSize : BlockSize - m_size;
+
+        // Divide the block into chunks of m_size bytes, and add their addrs
+        for(size_t i = 0; i < total_size; i += m_size)
+        {
+            m_addrs.push(&block.get()[i]);
+        }
+
+        // Keep the memory of the block alive by adding it to our stack
+        m_blocks.push(std::move(block));
+    }
+
+private:
+    size_t                                 m_size   = {};
+    std::stack<void*>                      m_addrs  = {};
+    std::stack<std::unique_ptr<uint8_t[]>> m_blocks = {};
+};
+
+}  // namespace memory
+}  // namespace common
+}  // namespace rocprofiler