ffi.dlsym(handle, symbol)

• handle DynamicLibrary
• symbol <string>
• 返回：<bigint>

从已加载的库中解析符号地址。

🌐 Resolves a symbol address from a loaded library.

这相当于调用 handle.getSymbol(symbol)。

🌐 This is equivalent to calling handle.getSymbol(symbol).