func getMemoryStats(containerID string, stats *info.ContainerStats) error {
path, err := fs.GetPath(containerID, driver, "memory", "")
if err != nil {
return err
}
// Get memory stat file
statsFile, err := os.Open(filepath.Join(path, "memory.stat"))
if err != nil {
if os.IsNotExist(err) {
return nil
}
return err
}
defer statsFile.Close()
sc := bufio.NewScanner(statsFile)
for sc.Scan() {
t, v, err := getCgroupParamKeyValue(sc.Text())
if err != nil {
return fmt.Errorf("failed to parse memory.stat (%q) - %v", sc.Text(), err)
}
stats.Memory.Stats[t] = v
}
// Get memory usage
usage, err := getCgroupParamUint(path, "memory.usage_in_bytes")
if err != nil {
return fmt.Errorf("failed to parse memory.usage_in_bytes - %v", err)
}
stats.Memory.Usage = usage
return nil
}
func getCpusetSpec(containerID string, cinfo *info.ContainerInfo) error {
path, err := fs.GetPath(containerID, driver, "cpuset", "")
if err != nil {
return err
}
// Get cpuset cpus
cpus, err := getCgroupParamString(path, "cpuset.cpus")
if err != nil {
return fmt.Errorf("failed to parse cpuset.cpus - %v", err)
}
cinfo.Spec.Cpuset.Cpus = cpus
return nil
}
func getMemorySpec(containerID string, cinfo *info.ContainerInfo) error {
path, err := fs.GetPath(containerID, driver, "memory", "")
if err != nil {
return err
}
// Get memory limit
limit, err := getCgroupParamUint(path, "memory.limit_in_bytes")
if err != nil {
return fmt.Errorf("failed to parse memory.limit_in_bytes - %v", err)
}
cinfo.Spec.Memory.Limit = limit
// Get memory memsw limit
swapLimit, err := getCgroupParamUint(path, "memory.memsw.limit_in_bytes")
if err != nil {
return fmt.Errorf("failed to parse memory.memsw.limit_in_bytes - %v", err)
}
cinfo.Spec.Memory.SwapLimit = swapLimit
return nil
}