84 lines
1.6 KiB
Go
84 lines
1.6 KiB
Go
// Copyright 2015-2018 The NATS 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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package pse
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/*
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#include <sys/types.h>
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#include <sys/sysctl.h>
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#include <sys/user.h>
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#include <stddef.h>
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#include <unistd.h>
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long pagetok(long size)
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{
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int pageshift, pagesize;
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pagesize = getpagesize();
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pageshift = 0;
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while (pagesize > 1) {
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pageshift++;
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pagesize >>= 1;
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}
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return (size << pageshift);
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}
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int getusage(double *pcpu, unsigned int *rss, unsigned int *vss)
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{
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int mib[4], ret;
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size_t len;
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struct kinfo_proc kp;
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len = 4;
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sysctlnametomib("kern.proc.pid", mib, &len);
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mib[3] = getpid();
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len = sizeof(kp);
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ret = sysctl(mib, 4, &kp, &len, NULL, 0);
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if (ret != 0) {
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return (errno);
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}
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*rss = pagetok(kp.ki_rssize);
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*vss = kp.ki_size;
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*pcpu = kp.ki_pctcpu;
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return 0;
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}
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*/
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import "C"
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import (
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"syscall"
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)
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// This is a placeholder for now.
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func ProcUsage(pcpu *float64, rss, vss *int64) error {
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var r, v C.uint
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var c C.double
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if ret := C.getusage(&c, &r, &v); ret != 0 {
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return syscall.Errno(ret)
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}
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*pcpu = float64(c)
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*rss = int64(r)
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*vss = int64(v)
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return nil
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}
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