node_exporter/collector/loadavg_unix.go
Kevin Pettijohn d2fbeeb3c3 Added loadavg collector for solaris
It seems solaris prefers "sys/loadavg.h" over "stdlib.h" when
fetching the load average.

For Illumos based OSes it was required to include "sys/time.h" to
ensure that "hrtime_t" was defined.

https://www.illumos.org/issues/6002

It also required setting the ldflags "-fno-stack-protector -lssp" to
avoid undefined symbols when linking with gcc.

/opt/local/go/pkg/tool/solaris_amd64/link: running gcc failed: exit status 1
Undefined                       first referenced
 symbol                             in file
 __stack_chk_fail                    /tmp/go-link-138622936/000002.o
 __stack_chk_guard                   /tmp/go-link-138622936/000002.o
2017-01-04 17:45:40 -08:00

35 lines
1,010 B
Go

// Copyright 2015 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build darwin dragonfly netbsd openbsd
// +build !noloadavg
package collector
import (
"errors"
)
// #include <stdlib.h>
import "C"
func getLoad() ([]float64, error) {
var loadavg [3]C.double
samples := C.getloadavg(&loadavg[0], 3)
if samples > 0 {
return []float64{float64(loadavg[0]), float64(loadavg[1]), float64(loadavg[2])}, nil
} else {
return nil, errors.New("failed to get load average")
}
}