Package plugin implements loading and symbol resolution of Go plugins.

A plugin is a Go main package with exported functions and variables that has
been built with:

When a plugin is first opened, the init functions of all packages not already
part of the program are called. The main function is not run. A plugin is only
initialized once, and cannot be closed.

Currently plugins are only supported on Linux and macOS. Please report any
issues.

• type Plugin
• type Symbol

plugin_dlopen.go

type Plugin struct {
    // contains filtered or unexported fields
}

Plugin is a loaded Go plugin.

Open opens a Go plugin. If a path has already been opened, then the existing
*Plugin is returned. It is safe for concurrent use by multiple goroutines.

func (p *) Lookup(symName string) (, error)

Lookup searches for a symbol named symName in plugin p. A symbol is any exported
variable or function. It reports an error if the symbol is not found. It is safe
for concurrent use by multiple goroutines.

A Symbol is a pointer to a variable or function.

For example, a plugin defined as

import "fmt"
var V int

may be loaded with the Open function and then the exported package symbols V and
F can be accessed