blob: 5d7f33d5a0e50b978ace76f22ae207f6b25de66b (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
//go:build !windows
package startcbinary
import (
"github.com/vespa-engine/vespa/client/go/trace"
"golang.org/x/sys/unix"
"os"
)
type ResourceId int
const (
RLIMIT_CORE ResourceId = unix.RLIMIT_AS
RLIMIT_NOFILE ResourceId = unix.RLIMIT_NOFILE
RLIMIT_NPROC ResourceId = unix.RLIMIT_NPROC
NO_RLIMIT uint64 = ^uint64(0)
)
func (rid ResourceId) String() string {
switch rid {
case RLIMIT_CORE:
return "core file size"
case RLIMIT_NOFILE:
return "open files"
case RLIMIT_NPROC:
return "max user processes"
}
return "unknown resource id"
}
func setResourceLimit(resource ResourceId, newVal uint64) {
var current unix.Rlimit
err := unix.Getrlimit(int(resource), ¤t)
if err != nil {
trace.Warning("Could not get current resource limit:", err)
return
}
wanted := current
if current.Max < newVal {
if os.Getuid() == 0 {
wanted.Max = newVal
} else {
newVal = current.Max
}
}
if current.Cur < newVal {
wanted.Cur = newVal
}
err = unix.Setrlimit(int(resource), &wanted)
if err != nil {
trace.Trace("Failed setting resource limit:", err)
} else {
trace.Trace("Resource limit", resource, "adjusted OK:", wanted.Cur, "/", wanted.Max)
}
}
|