90 lines
1.7 KiB
Go
90 lines
1.7 KiB
Go
package gosigar
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import (
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"time"
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)
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type ConcreteSigar struct{}
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func (c *ConcreteSigar) CollectCpuStats(collectionInterval time.Duration) (<-chan Cpu, chan<- struct{}) {
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// samplesCh is buffered to 1 value to immediately return first CPU sample
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samplesCh := make(chan Cpu, 1)
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stopCh := make(chan struct{})
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go func() {
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var cpuUsage Cpu
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// Immediately provide non-delta value.
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// samplesCh is buffered to 1 value, so it will not block.
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cpuUsage.Get()
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samplesCh <- cpuUsage
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ticker := time.NewTicker(collectionInterval)
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for {
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select {
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case <-ticker.C:
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previousCpuUsage := cpuUsage
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cpuUsage.Get()
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select {
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case samplesCh <- cpuUsage.Delta(previousCpuUsage):
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default:
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// Include default to avoid channel blocking
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}
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case <-stopCh:
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return
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}
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}
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}()
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return samplesCh, stopCh
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}
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func (c *ConcreteSigar) GetLoadAverage() (LoadAverage, error) {
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l := LoadAverage{}
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err := l.Get()
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return l, err
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}
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func (c *ConcreteSigar) GetMem() (Mem, error) {
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m := Mem{}
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err := m.Get()
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return m, err
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}
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func (c *ConcreteSigar) GetSwap() (Swap, error) {
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s := Swap{}
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err := s.Get()
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return s, err
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}
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func (c *ConcreteSigar) GetHugeTLBPages() (HugeTLBPages, error) {
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p := HugeTLBPages{}
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err := p.Get()
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return p, err
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}
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func (c *ConcreteSigar) GetFileSystemUsage(path string) (FileSystemUsage, error) {
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f := FileSystemUsage{}
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err := f.Get(path)
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return f, err
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}
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func (c *ConcreteSigar) GetFDUsage() (FDUsage, error) {
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fd := FDUsage{}
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err := fd.Get()
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return fd, err
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}
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// GetRusage return the resource usage of the process
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// Possible params: 0 = RUSAGE_SELF, 1 = RUSAGE_CHILDREN, 2 = RUSAGE_THREAD
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func (c *ConcreteSigar) GetRusage(who int) (Rusage, error) {
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r := Rusage{}
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err := r.Get(who)
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return r, err
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}
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