48 lines
1.4 KiB
Go
48 lines
1.4 KiB
Go
// Copyright The OpenTelemetry 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.
|
|
|
|
//go:build linux
|
|
// +build linux
|
|
|
|
package iruntime
|
|
|
|
import "go.opentelemetry.io/collector/internal/cgroups"
|
|
|
|
// unlimitedMemorySize defines the bytes size when memory limit is not set
|
|
// for the container and process with cgroups
|
|
const unlimitedMemorySize = 9223372036854771712
|
|
|
|
// TotalMemory returns total available memory.
|
|
// This implementation is meant for linux and uses cgroups to determine available memory.
|
|
func TotalMemory() (uint64, error) {
|
|
cgroups, err := cgroups.NewCGroupsForCurrentProcess()
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
memoryQuota, defined, err := cgroups.MemoryQuota()
|
|
if err != nil || !defined {
|
|
return 0, err
|
|
}
|
|
|
|
if memoryQuota == unlimitedMemorySize {
|
|
totalMem, err := readMemInfo()
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
return totalMem, nil
|
|
}
|
|
|
|
return uint64(memoryQuota), nil
|
|
}
|