prometheusmetricshost-metricsmachine-metricsnode-metricsprocfsprometheus-exportersystem-informationsystem-metrics
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59 lines
1.9 KiB
59 lines
1.9 KiB
// Copyright 2015 The Prometheus Authors |
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// Licensed under the Apache License, Version 2.0 (the "License"); |
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// you may not use this file except in compliance with the License. |
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// You may obtain a copy of the License at |
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// |
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// http://www.apache.org/licenses/LICENSE-2.0 |
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// |
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// Unless required by applicable law or agreed to in writing, software |
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// distributed under the License is distributed on an "AS IS" BASIS, |
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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// See the License for the specific language governing permissions and |
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// limitations under the License. |
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// +build !nomeminfo |
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package collector |
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// #include <mach/mach_host.h> |
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import "C" |
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import ( |
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"encoding/binary" |
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"fmt" |
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"syscall" |
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"unsafe" |
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"golang.org/x/sys/unix" |
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) |
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func (c *meminfoCollector) getMemInfo() (map[string]float64, error) { |
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infoCount := C.mach_msg_type_number_t(C.HOST_VM_INFO_COUNT) |
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vmstat := C.vm_statistics_data_t{} |
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ret := C.host_statistics( |
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C.host_t(C.mach_host_self()), |
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C.HOST_VM_INFO, |
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C.host_info_t(unsafe.Pointer(&vmstat)), |
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&infoCount, |
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) |
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if ret != C.KERN_SUCCESS { |
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return nil, fmt.Errorf("Couldn't get memory statistics, host_statistics returned %d", ret) |
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} |
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totalb, err := unix.Sysctl("hw.memsize") |
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if err != nil { |
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return nil, err |
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} |
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// Syscall removes terminating NUL which we need to cast to uint64 |
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total := binary.LittleEndian.Uint64([]byte(totalb + "\x00")) |
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ps := C.natural_t(syscall.Getpagesize()) |
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return map[string]float64{ |
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"active_bytes_total": float64(ps * vmstat.active_count), |
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"inactive_bytes_total": float64(ps * vmstat.inactive_count), |
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"wired_bytes_total": float64(ps * vmstat.wire_count), |
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"free_bytes_total": float64(ps * vmstat.free_count), |
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"swapped_in_pages_total": float64(ps * vmstat.pageins), |
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"swapped_out_pages_total": float64(ps * vmstat.pageouts), |
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"bytes_total": float64(total), |
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}, nil |
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}
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