doutan2456
doutan2456
2016-06-15 09:30
浏览 353
已采纳

可以在go中手动释放内存吗?

After discussion with college, I wonder if it would be possible (even if completely does not make any sense) to deallocate memory manually in go (ie. by using unsafe package). Is it?

  • 点赞
  • 写回答
  • 关注问题
  • 收藏
  • 邀请回答

1条回答 默认 最新

  • donjd86266
    donjd86266 2016-06-15 10:00
    已采纳

    Here is a thread that may interest you: Add runtime.Free() for GOGC=off

    Interesting part:

    The Go GC does not have the ability to manually deallocate blocks anymore. And besides, runtime. Free is unsafe (people might free still in use pointers or double free) and then all sorts of C memory problem that Go tries hard to get rid of will come back. The other reason is that runtime sometimes allocates behind your back and there is no way for the program to explicitly free memory.

    If you really want to manually manage memory with Go, implement your own memory allocator based on syscall.Mmap or cgo malloc/free.

    Disabling GC for extended period of time is generally a bad solution for a concurrent language like Go. And Go's GC will only be better down the road.

    TL;DR: Yes, but don't do it

    点赞 评论

相关推荐