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Properly check error codes in LikwidCollector

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This commit is contained in:
Thomas Roehl 2021-05-18 15:14:11 +02:00
parent 6e7babe084
commit cda6ebf884
1 changed files with 46 additions and 13 deletions
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59
collectors/likwidMetric.go
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@ -72,6 +72,7 @@ func getSocketCpus() map[C.int]int {
}
func (m *LikwidCollector) Init() error {
var ret C.int
m.name = "LikwidCollector"
m.setup()
cpulist := CpuList()
@ -86,54 +87,84 @@ func (m *LikwidCollector) Init() error {
}
}
m.metrics = make(map[C.int]map[string]int)
C.topology_init()
C.perfmon_init(C.int(len(m.cpulist)), &m.cpulist[0])
m.groups = make(map[string]C.int)
ret = C.topology_init()
if ret != 0 {
return errors.New("Failed to initialize LIKWID topology")
}
ret = C.perfmon_init(C.int(len(m.cpulist)), &m.cpulist[0])
if ret != 0 {
C.topology_finalize()
return errors.New("Failed to initialize LIKWID topology")
}
gpath := C.CString(GROUPPATH)
C.config_setGroupPath(gpath)
C.free(unsafe.Pointer(gpath))
m.init = true
m.groups = make(map[string]C.int)
for g, metrics := range likwid_metrics {
cstr := C.CString(g)
gid := C.perfmon_addEventSet(cstr)
if gid >= 0 {
m.groups[g] = gid
gmetrics := 0
for i, metric := range metrics {
idx, err := getMetricId(gid, metric.search)
if err != nil {
log.Print(err)
} else {
likwid_metrics[g][i].group_idx = idx
gmetrics++
}
}
if gmetrics > 0 {
m.groups[g] = gid
}
} else {
log.Print("Failed to add events set ", g)
}
C.free(unsafe.Pointer(cstr))
}
if len(m.groups) == 0 {
C.perfmon_finalize()
C.topology_finalize()
return errors.New("No LIKWID performance group initialized")
}
m.init = true
return nil
}
func (m *LikwidCollector) Read(interval time.Duration) {
if m.init {
var ret C.int
for gname, gid := range m.groups {
C.perfmon_setupCounters(gid)
C.perfmon_startCounters()
ret = C.perfmon_setupCounters(gid)
if ret != 0 {
log.Print("Failed to setup performance group ", gname)
continue
}
ret = C.perfmon_startCounters()
if ret != 0 {
log.Print("Failed to start performance group ", gname)
continue
}
time.Sleep(interval)
C.perfmon_stopCounters()
ret = C.perfmon_stopCounters()
if ret != 0 {
log.Print("Failed to stop performance group ", gname)
continue
}
for _, lmetric := range likwid_metrics[gname] {
if lmetric.socket_scope {
for sid, tid := range m.sock2tid {
res := C.perfmon_getLastMetric(gid, C.int(lmetric.group_idx), C.int(tid))
m.sockets[int(sid)][lmetric.name] = float64(res)
// log.Print("Metric '", lmetric.name,"' on Socket ",int(sid)," returns ", m.sockets[int(sid)][lmetric.name])
// log.Print("Metric '", lmetric.name,"' on Socket ",int(sid)," returns ", m.sockets[int(sid)][lmetric.name])
}
} else {
for tid, cpu := range m.cpulist {
res := C.perfmon_getLastMetric(gid, C.int(lmetric.group_idx), C.int(tid))
m.cpus[int(cpu)][lmetric.name] = float64(res)
// log.Print("Metric '", lmetric.name,"' on CPU ",int(cpu)," returns ", m.cpus[int(cpu)][lmetric.name])
// log.Print("Metric '", lmetric.name,"' on CPU ",int(cpu)," returns ", m.cpus[int(cpu)][lmetric.name])
}
}
}
@ -161,8 +192,10 @@ func (m *LikwidCollector) Read(interval time.Duration) {
}
func (m *LikwidCollector) Close() {
C.perfmon_finalize()
C.topology_finalize()
m.init = false
if m.init {
C.perfmon_finalize()
C.topology_finalize()
m.init = false
}
return
}