//go:build linux

package osthread

import (
	"github.com/ebitengine/purego"
)

func onmainthread() bool {
	return getpid() == gettid()
}

var (
	getpid func() int32
	gettid func() int32
)

func init() {
	libc, err := purego.Dlopen("libc.so.6", purego.RTLD_GLOBAL|purego.RTLD_NOW)
	if err != nil {
		panic(err)
	}

	purego.RegisterLibFunc(&getpid, libc, "getpid")
	purego.RegisterLibFunc(&gettid, libc, "gettid")
}