mirror of
https://github.com/diamondburned/cchat-gtk.git
synced 2024-12-23 04:36:49 +00:00
48 lines
969 B
Go
48 lines
969 B
Go
// +build linux
|
|
|
|
package main
|
|
|
|
import (
|
|
"log"
|
|
"os"
|
|
"runtime/debug"
|
|
"strings"
|
|
"syscall"
|
|
"time"
|
|
)
|
|
|
|
// Inject madvdontneed=1 as soon as possible.
|
|
|
|
var _ = func() struct{} {
|
|
// If GODEBUG is not empty, then use that instead of trying to exec our own.
|
|
if os.Getenv("GODEBUG") != "" {
|
|
return struct{}{}
|
|
}
|
|
|
|
// Do magic.
|
|
var environ = append(os.Environ(), "GODEBUG=madvdontneed=1")
|
|
|
|
log.Println("execve(2)ing with madvdontneed=1 for aggressive GC.")
|
|
|
|
if err := syscall.Exec(os.Args[0], os.Args, environ); err != nil {
|
|
log.Fatalln("Fatal error while executing:", err)
|
|
} else {
|
|
os.Exit(0)
|
|
}
|
|
|
|
return struct{}{}
|
|
}()
|
|
|
|
func init() {
|
|
// Aggressive memory freeing you asked, so aggressive memory freeing we will
|
|
// deliver.
|
|
if strings.Contains(os.Getenv("GODEBUG"), "madvdontneed=1") {
|
|
go func() {
|
|
log.Println("Now attempting to free memory every 5s... (madvdontneed=1)")
|
|
for range time.Tick(5 * time.Second) {
|
|
debug.FreeOSMemory()
|
|
}
|
|
}()
|
|
}
|
|
}
|