动态 FFI 在 Go 中

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英文:

Dynamic FFI in Go

问题

在Go语言中,是否可以动态地加载外部的C库(dll)并调用其函数?

我知道有cgo可以用来静态地绑定C函数,但我对动态方式更感兴趣。

英文:

Is it possible to dynamically load foreign C library (dll) and call its functions in Go?

I know there is cgo which is used to statically bind to C functions, but I'm interested in dynamic way.

答案1

得分: 7

简短回答:不行(至少使用gc编译器不行,但gccgo是可以与gcc链接的,所以可能是可行的)。

中等回答:但是,你可以静态绑定libffi或libdl,然后使用它来动态加载其他库。

长回答:你可以使用go工具链的C编译器和汇编器(参见src/pkg/runtime)编写C和ASM的go包。因此,你可以将C或ASM作为go包编写FFI。

编辑:根据下面的评论(现在也是CW)

另外,可以使用syscall和unsafe包来实现(在Windows上很容易,但我想在Linux上可能会更困难,与上面的第三种解决方案差不多)。

http://code.google.com/p/go/wiki/CallingWindowsDLLs

英文:

Short answer: no. (at least not with gc, gccgo is gcc linkable however, so it might be possible)

Medium answer: However, you can statically bind, say, libffi or libdl and then use it to dynamically load other libraries.

Long answer: You can write go packages in C and ASM using the go toolchains C compiler and assembler (see src/pkg/runtime for example). So you could write a FFI in either C or ASM as a go package.

Edit: From the comments below (also CW now)

Alternatively, it can be done using the <code>syscall</code> and <code>unsafe</code> packages (easily in windows, but I imagine it would be harder in linux and not far off from the third solution above).

http://code.google.com/p/go/wiki/CallingWindowsDLLs

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  • 本文由 发表于 2010年11月9日 18:28:32
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