//shareHandle 共享句柄
namespace thread.shareHandle;
import thread.table;

var context_table = thread.table("{93B5BAF4-EE2F-4A70-8295-F0F1D896C775}")
var context_table_ref = thread.table("{6D47D215-F4AD-478E-8EC0-029CA5C39612}")

create = function(shareName,init,...){
	..thread.lock("{EF819EA3-9D57-4C32-A68C-6D39CA55BECE}")
	var handle = context_table.get(shareName)
	if( handle === null ){
		handle = init(...);
		context_table.set(shareName,handle);
		context_table_ref.set(shareName,1)
	}
	else {
		var ref = context_table_ref.get(shareName)
		context_table_ref.set(shareName,ref+1)
	}
	..thread.unlock("{EF819EA3-9D57-4C32-A68C-6D39CA55BECE}")
	return handle;
}

delete = function(shareName,free){
	..thread.lock("{EF819EA3-9D57-4C32-A68C-6D39CA55BECE}")
	var ret;
	var handle = context_table.get(shareName)
	if(handle === null )return;
	
	var ref = context_table_ref.get(shareName) - 1;
	if( ref <= 0 ){
		context_table_ref.set(shareName,null);
		context_table.set(shareName,null);
		ret = free(handle) 
	}
	else{
		context_table_ref.set(shareName,ref)   
	}
	..thread.unlock("{EF819EA3-9D57-4C32-A68C-6D39CA55BECE}")
	return ret;
}

/**intellisense(thread)
shareHandle = 线程共享句柄
shareHandle.create(.(全局唯一名字,构造函数,其他创建参数) = 创建一个多线程共享句柄,返回指针\n如果已存在句柄,则增加引用计数并直接返回该句柄\n构造函数必须返回非空值
shareHandle.delete(.(全局唯一名字,析构函数) = 多线程共享句柄引用计数减一,\n如果引用计数为0,将共享句柄作为参数调用析构函数关闭对象
end intellisense**/