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Use enums for cgroup controller types / labels

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This commit is contained in:
Daniel P. Berrange 2009-07-09 14:09:38 +01:00
parent 5320ce02d8
commit 6c5d4e7cf4
1 changed files with 29 additions and 17 deletions
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46
src/cgroup.c
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@ -31,15 +31,21 @@
#define CGROUP_MAX_VAL 512
struct virCgroup {
char *path;
enum {
VIR_CGROUP_CONTROLLER_CPUACCT,
VIR_CGROUP_CONTROLLER_MEMORY,
VIR_CGROUP_CONTROLLER_DEVICES,
VIR_CGROUP_CONTROLLER_CPUSET,
VIR_CGROUP_CONTROLLER_LAST
};
const char *supported_controllers[] = {
"memory",
"devices",
"cpuacct",
NULL
VIR_ENUM_DECL(virCgroupController);
VIR_ENUM_IMPL(virCgroupController, VIR_CGROUP_CONTROLLER_LAST,
"cpuacct", "memory", "devices", "cpuset");
struct virCgroup {
char *path;
};
/**
@ -107,8 +113,9 @@ int virCgroupHaveSupport(void)
virCgroupPtr root;
int i;
for (i = 0; supported_controllers[i] != NULL; i++) {
root = virCgroupGetMount(supported_controllers[i]);
for (i = 0 ; i < VIR_CGROUP_CONTROLLER_LAST ; i++) {
const char *label = virCgroupControllerTypeToString(i);
root = virCgroupGetMount(label);
if (root == NULL)
return -1;
virCgroupFree(&root);
@ -419,15 +426,16 @@ static int virCgroupMakeGroup(const char *name)
int i;
int rc = 0;
for (i = 0; supported_controllers[i] != NULL; i++) {
for (i = 0 ; i < VIR_CGROUP_CONTROLLER_LAST ; i++) {
const char *label = virCgroupControllerTypeToString(i);
char *path = NULL;
virCgroupPtr root;
root = virCgroupGetMount(supported_controllers[i]);
root = virCgroupGetMount(label);
if (root == NULL)
continue;
rc = virCgroupPathOfGroup(name, supported_controllers[i], &path);
rc = virCgroupPathOfGroup(name, label, &path);
if (rc != 0) {
virCgroupFree(&root);
break;
@ -521,6 +529,7 @@ static int virCgroupOpen(virCgroupPtr parent,
virCgroupPtr *newgroup)
{
int rc = 0;
const char *label = virCgroupControllerTypeToString(0);
char *grppath = NULL;
bool free_parent = (parent == NULL);
@ -532,7 +541,7 @@ static int virCgroupOpen(virCgroupPtr parent,
virCgroupFree(&parent);
rc = virCgroupPathOfGroup((*newgroup)->path,
supported_controllers[0],
label,
&grppath);
if (rc != 0)
goto err;
@ -594,9 +603,10 @@ int virCgroupRemove(virCgroupPtr group)
int i;
char *grppath = NULL;
for (i = 0; supported_controllers[i] != NULL; i++) {
for (i = 0 ; i < VIR_CGROUP_CONTROLLER_LAST ; i++) {
const char *label = virCgroupControllerTypeToString(i);
if (virCgroupPathOfGroup(group->path,
supported_controllers[i],
label,
&grppath) != 0)
continue;
@ -626,9 +636,11 @@ int virCgroupAddTask(virCgroupPtr group, pid_t pid)
char *taskpath = NULL;
char *pidstr = NULL;
for (i = 0; supported_controllers[i] != NULL; i++) {
for (i = 0 ; i < VIR_CGROUP_CONTROLLER_LAST ; i++) {
const char *label = virCgroupControllerTypeToString(i);
rc = virCgroupPathOfGroup(group->path,
supported_controllers[i],
label,
&grppath);
if (rc != 0)
goto done;