1 files changed, 60 insertions, 0 deletions
diff --git a/pkg/cgroups/memory.go b/pkg/cgroups/memory.go
new file mode 100644
index 000000000..2224e4f1e
--- /dev/null
+++ b/pkg/cgroups/memory.go
@@ -0,0 +1,60 @@
+package cgroups
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+
+	spec "github.com/opencontainers/runtime-spec/specs-go"
+)
+
+type memHandler struct {
+}
+
+func getMemoryHandler() *memHandler {
+	return &memHandler{}
+}
+
+// Apply set the specified constraints
+func (c *memHandler) Apply(ctr *CgroupControl, res *spec.LinuxResources) error {
+	if res.Memory == nil {
+		return nil
+	}
+	return fmt.Errorf("function not implemented yet")
+}
+
+// Create the cgroup
+func (c *memHandler) Create(ctr *CgroupControl) (bool, error) {
+	if ctr.cgroup2 {
+		return false, fmt.Errorf("function not implemented yet")
+	}
+	return ctr.createCgroupDirectory(Memory)
+}
+
+// Destroy the cgroup
+func (c *memHandler) Destroy(ctr *CgroupControl) error {
+	return os.Remove(ctr.getCgroupv1Path(Memory))
+}
+
+// Stat fills a metrics structure with usage stats for the controller
+func (c *memHandler) Stat(ctr *CgroupControl, m *Metrics) error {
+	if ctr.cgroup2 {
+		return fmt.Errorf("function not implemented yet")
+	}
+	usage := MemoryUsage{}
+
+	memoryRoot := ctr.getCgroupv1Path(Memory)
+
+	var err error
+	usage.Usage, err = readFileAsUint64(filepath.Join(memoryRoot, "memory.usage_in_bytes"))
+	if err != nil {
+		return err
+	}
+	usage.Limit, err = readFileAsUint64(filepath.Join(memoryRoot, "memory.limit_in_bytes"))
+	if err != nil {
+		return err
+	}
+
+	m.Memory = MemoryMetrics{Usage: usage}
+	return nil
+}