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externals/dynarmic/src/common/memory_pool.cpp

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+/* This file is part of the dynarmic project.
+ * Copyright (c) 2016 MerryMage
+ * SPDX-License-Identifier: 0BSD
+ */
+
+#include <cstdlib>
+
+#include "common/memory_pool.h"
+
+namespace Dynarmic::Common {
+
+Pool::Pool(size_t object_size, size_t initial_pool_size) : object_size(object_size), slab_size(initial_pool_size) {
+    AllocateNewSlab();
+}
+
+Pool::~Pool() {
+    std::free(current_slab);
+
+    for (char* slab : slabs) {
+        std::free(slab);
+    }
+}
+
+void* Pool::Alloc() {
+    if (remaining == 0) {
+        slabs.emplace_back(current_slab);
+        AllocateNewSlab();
+    }
+
+    void* ret = static_cast<void*>(current_ptr);
+    current_ptr += object_size;
+    remaining--;
+
+    return ret;
+}
+
+void Pool::AllocateNewSlab() {
+    current_slab = static_cast<char*>(std::malloc(object_size * slab_size));
+    current_ptr = current_slab;
+    remaining = slab_size;
+}
+
+} // namespace Dynarmic::Common