Example #1
0
// PageStats get pages related stats
// Go equivalent to sg_get_page_stats_diff
func (s *Stat) PageStats() *PageStats {
	s.Lock()
	defer s.Unlock()

	page_stats := C.sg_get_page_stats_diff(nil)

	p := &PageStats{
		PageIn:  int(page_stats.pages_pagein),
		PageOut: int(page_stats.pages_pageout),
	}
	return p
}
Example #2
0
// PageStats get pages related stats
// Go equivalent to sg_get_page_stats_diff
func (s *Stat) PageStats() *PageStats {
	s.Lock()
	defer s.Unlock()

	var p *PageStats

	do(func() {
		page_stats := C.sg_get_page_stats_diff(nil)

		p = &PageStats{
			PageIn:    int(page_stats.pages_pagein),
			PageOut:   int(page_stats.pages_pageout),
			Period:    time.Duration(int(page_stats.systime)),
			TimeTaken: time.Now(),
		}
	})
	return p
}
Example #3
0
// NewStat return a new Stat handle
func NewStat() *Stat {
	s := &Stat{}
	runtime.SetFinalizer(s, (*Stat).free)

	initDone := make(chan bool)
	s.exitMessage = make(chan bool)

	C.sg_init(1)

	go func() {
		// We need some function calls to be performed on the same thread
		// Those for which statgrab is using a thread local
		runtime.LockOSThread()
		defer runtime.UnlockOSThread()

		// Throw away the first reading as thats averaged over the machines uptime
		C.sg_get_cpu_stats_diff(nil)
		C.sg_get_network_io_stats_diff(nil)
		C.sg_get_page_stats_diff(nil)
		C.sg_get_disk_io_stats_diff(nil)

		initDone <- true

		for {
			select {
			case <-s.exitMessage:
				break
			case f := <-mainfunc:
				f()
			}
		}

	}()

	<-initDone

	return s
}