Add Chromium-only Blender WebEngine parity work

blender-5.2.0/intern/memutil/MEM_CacheLimiterC-Api.h

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+/* SPDX-FileCopyrightText: 2006-2023 Blender Authors
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later */
+
+/** \file
+ * \ingroup intern_memutil
+ */
+
+#ifndef __MEM_CACHELIMITERC_API_H__
+#define __MEM_CACHELIMITERC_API_H__
+
+#include <cstddef>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct MEM_CacheLimiter_s;
+struct MEM_CacheLimiterHandle_s;
+
+using MEM_CacheLimiterC = struct MEM_CacheLimiter_s;
+using MEM_CacheLimiterHandleC = struct MEM_CacheLimiterHandle_s;
+
+/* function used to remove data from memory */
+using MEM_CacheLimiter_Destruct_Func = void (*)(void *);
+
+/* function used to measure stored data element size */
+using MEM_CacheLimiter_DataSize_Func = size_t (*)(void *);
+
+/* function used to measure priority of item when freeing memory */
+using MEM_CacheLimiter_ItemPriority_Func = int (*)(void *, int);
+
+/* function to check whether item could be destroyed */
+using MEM_CacheLimiter_ItemDestroyable_Func = bool (*)(void *);
+
+#ifndef __MEM_CACHELIMITER_H__
+void MEM_CacheLimiter_set_maximum(size_t m);
+size_t MEM_CacheLimiter_get_maximum(void);
+void MEM_CacheLimiter_set_disabled(bool disabled);
+bool MEM_CacheLimiter_is_disabled(void);
+#endif /* __MEM_CACHELIMITER_H__ */
+
+/**
+ * Create new MEM_CacheLimiter object
+ * managed objects are destructed with the data_destructor
+ *
+ * \param data_destructor: TODO.
+ * \return A new #MEM_CacheLimter object.
+ */
+
+MEM_CacheLimiterC *new_MEM_CacheLimiter(MEM_CacheLimiter_Destruct_Func data_destructor,
+                                        MEM_CacheLimiter_DataSize_Func data_size);
+
+/**
+ * Delete MEM_CacheLimiter
+ *
+ * Frees the memory of the CacheLimiter but does not touch managed objects!
+ *
+ * \param This: "This" pointer.
+ */
+
+void delete_MEM_CacheLimiter(MEM_CacheLimiterC *This);
+
+/**
+ * Manage object
+ *
+ * \param This: "This" pointer, data object to manage.
+ * \return The handle to reference/unreference & touch the managed object.
+ */
+
+MEM_CacheLimiterHandleC *MEM_CacheLimiter_insert(MEM_CacheLimiterC *This, void *data);
+
+/**
+ * Free objects until memory constraints are satisfied
+ *
+ * \param This: "This" pointer.
+ */
+
+void MEM_CacheLimiter_enforce_limits(MEM_CacheLimiterC *This);
+
+/**
+ * Unmanage object previously inserted object.
+ * Does _not_ delete managed object!
+ *
+ * \param handle: of object.
+ */
+
+void MEM_CacheLimiter_unmanage(MEM_CacheLimiterHandleC *handle);
+
+/**
+ * Raise priority of object (put it at the tail of the deletion chain)
+ *
+ * \param handle: of object.
+ */
+
+void MEM_CacheLimiter_touch(MEM_CacheLimiterHandleC *handle);
+
+/**
+ * Increment reference counter. Objects with reference counter != 0 are _not_
+ * deleted.
+ *
+ * \param handle: of object.
+ */
+
+void MEM_CacheLimiter_ref(MEM_CacheLimiterHandleC *handle);
+
+/**
+ * Decrement reference counter. Objects with reference counter != 0 are _not_
+ * deleted.
+ *
+ * \param handle: of object.
+ */
+
+void MEM_CacheLimiter_unref(MEM_CacheLimiterHandleC *handle);
+
+/**
+ * Get reference counter.
+ *
+ * \param handle: of object.
+ */
+
+int MEM_CacheLimiter_get_refcount(MEM_CacheLimiterHandleC *handle);
+
+/**
+ * Get pointer to managed object
+ *
+ * \param handle: of object.
+ */
+
+void *MEM_CacheLimiter_get(MEM_CacheLimiterHandleC *handle);
+
+void MEM_CacheLimiter_ItemPriority_Func_set(MEM_CacheLimiterC *This,
+                                            MEM_CacheLimiter_ItemPriority_Func item_priority_func);
+
+void MEM_CacheLimiter_ItemDestroyable_Func_set(
+    MEM_CacheLimiterC *This, MEM_CacheLimiter_ItemDestroyable_Func item_destroyable_func);
+
+size_t MEM_CacheLimiter_get_memory_in_use(MEM_CacheLimiterC *This);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  // __MEM_CACHELIMITERC_API_H__