Start work on multibyte-support in locale backend.

* add ICUThreadLocaleStorageValue, which will be used to maintain per-thread ICU converters * add ICUConverterManager
2011-11-22 16:55:39 +01:00
parent 02606f712c
commit bcadc4ca66
5 changed files with 372 additions and 1 deletions
@@ -0,0 +1,106 @@
+/*
+ * Copyright 2010, Oliver Tappe, [email protected].
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef _ICU_CONVERTER_MANAGER_H
+#define _ICU_CONVERTER_MANAGER_H
+
+
+#include <pthread.h>
+
+#include <map>
+
+#include <unicode/ucnv.h>
+
+#include <SupportDefs.h>
+
+#include <locks.h>
+#include <Referenceable.h>
+#include <util/DoublyLinkedList.h>
+//#include <util/OpenHashTable.h>
+
+#include "ICUThreadLocalStorageValue.h"
+
+
+namespace BPrivate {
+namespace Libroot {
+
+
+class ICUConverterInfo : public BReferenceable {
+public:
+								ICUConverterInfo(UConverter* converter,
+									const char* charset, ICUConverterID id);
+	virtual						~ICUConverterInfo();
+
+			UConverter*			Converter() const
+									{ return fConverter; }
+
+			const char*			Charset() const
+									{ return fCharset; }
+
+			ICUConverterID		ID() const
+									{ return fID; }
+
+private:
+			UConverter*			fConverter;
+			char				fCharset[UCNV_MAX_CONVERTER_NAME_LENGTH];
+			ICUConverterID		fID;
+};
+
+
+typedef BReference<ICUConverterInfo> ICUConverterRef;
+
+
+class ICUConverterManager {
+public:
+								ICUConverterManager();
+								~ICUConverterManager();
+
+			status_t			CreateConverter(const char* charset,
+									ICUConverterRef& converterRefOut,
+									ICUConverterID& idOut);
+
+			status_t			GetConverter(ICUConverterID id,
+									ICUConverterRef& converterRefOut);
+
+			status_t			DropConverter(ICUConverterID id);
+
+	static	ICUConverterManager*	Instance();
+
+private:
+	static	void				_CreateInstance();
+
+	static	ICUConverterManager*	sInstance;
+
+	static	const size_t		skMaxConvertersPerProcess = 1024;
+
+private:
+			class LinkedConverterInfo
+				:
+				public ICUConverterInfo,
+				public DoublyLinkedListLinkImpl<LinkedConverterInfo>
+			{
+			public:
+				LinkedConverterInfo(UConverter* converter, const char* charset,
+					ICUConverterID id)
+					:
+					ICUConverterInfo(converter, charset, id)
+				{
+				}
+			};
+			typedef	std::map<ICUConverterID, LinkedConverterInfo*> ConverterMap;
+			typedef DoublyLinkedList<LinkedConverterInfo> ConverterList;
+
+private:
+			ConverterMap		fConverterMap;
+			ConverterList		fLRUConverters;
+			mutex				fMutex;
+			ICUConverterID		fNextConverterID;
+};
+
+
+}	// namespace Libroot
+}	// namespace BPrivate
+
+
+#endif	// _ICU_CONVERTER_MANAGER_H
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2011, Oliver Tappe, [email protected].
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef _ICU_THREAD_LOCAL_STORAGE_VALUE_H
+#define _ICU_THREAD_LOCAL_STORAGE_VALUE_H
+
+
+#include <pthread.h>
+
+#include <SupportDefs.h>
+
+
+namespace BPrivate {
+namespace Libroot {
+
+
+typedef unsigned int ICUConverterID;
+
+
+struct ICUThreadLocalStorageValue {
+			ICUConverterID		converterID;
+
+								ICUThreadLocalStorageValue();
+								~ICUThreadLocalStorageValue();
+
+	static	status_t			GetInstanceForKey(pthread_key_t tlsKey,
+									ICUThreadLocalStorageValue*& instanceOut);
+};
+
+
+}	// namespace Libroot
+}	// namespace BPrivate
+
+
+#endif	// _ICU_THREAD_LOCAL_STORAGE_VALUE_H