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use virBitmap to store nodeinfo.

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This commit is contained in:
Hu Tao 2012-09-14 15:47:03 +08:00 committed by Laine Stump
parent f4b2dcf550
commit fe2a0b027b
3 changed files with 26 additions and 25 deletions
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26
src/nodeinfo.c
View File

@ -739,10 +739,10 @@ cleanup:
* and max cpu is 7. The map file shows 0-4,6-7. This function parses
* it and returns cpumap.
*/
static char *
static virBitmapPtr
linuxParseCPUmap(int *max_cpuid, const char *path)
{
char *map = NULL;
virBitmapPtr map = NULL;
char *str = NULL;
int max_id = 0, i;
@ -751,20 +751,16 @@ linuxParseCPUmap(int *max_cpuid, const char *path)
goto error;
}
if (VIR_ALLOC_N(map, VIR_DOMAIN_CPUMASK_LEN) < 0) {
virReportOOMError();
goto error;
}
if (virDomainCpuSetParse(str, 0, map,
VIR_DOMAIN_CPUMASK_LEN) < 0) {
if (virBitmapParse(str, 0, &map,
VIR_DOMAIN_CPUMASK_LEN) < 0) {
goto error;
}
for (i = 0; i < VIR_DOMAIN_CPUMASK_LEN; i++) {
if (map[i]) {
max_id = i;
}
i = -1;
while ((i = virBitmapNextSetBit(map, i)) >= 0) {
max_id = i;
}
*max_cpuid = max_id;
VIR_FREE(str);
@ -772,7 +768,7 @@ linuxParseCPUmap(int *max_cpuid, const char *path)
error:
VIR_FREE(str);
VIR_FREE(map);
virBitmapFree(map);
return NULL;
}
#endif
@ -911,14 +907,14 @@ int nodeGetMemoryStats(virConnectPtr conn ATTRIBUTE_UNUSED,
#endif
}
char *
virBitmapPtr
nodeGetCPUmap(virConnectPtr conn ATTRIBUTE_UNUSED,
int *max_id ATTRIBUTE_UNUSED,
const char *mapname ATTRIBUTE_UNUSED)
{
#ifdef __linux__
char *path;
char *cpumap;
virBitmapPtr cpumap;
if (virAsprintf(&path, SYSFS_SYSTEM_PATH "/cpu/%s", mapname) < 0) {
virReportOOMError();

6
src/nodeinfo.h
View File

@ -46,9 +46,9 @@ int nodeGetCellsFreeMemory(virConnectPtr conn,
int maxCells);
unsigned long long nodeGetFreeMemory(virConnectPtr conn);
char *nodeGetCPUmap(virConnectPtr conn,
int *max_id,
const char *mapname);
virBitmapPtr nodeGetCPUmap(virConnectPtr conn,
int *max_id,
const char *mapname);
int nodeGetMemoryParameters(virConnectPtr conn,
virTypedParameterPtr params,

19
src/qemu/qemu_driver.c
View File

@ -13502,8 +13502,8 @@ qemuDomainGetPercpuStats(virDomainPtr domain,
int start_cpu,
unsigned int ncpus)
{
char *map = NULL;
char *map2 = NULL;
virBitmapPtr map = NULL;
virBitmapPtr map2 = NULL;
int rv = -1;
int i, id, max_id;
char *pos;
@ -13515,6 +13515,7 @@ qemuDomainGetPercpuStats(virDomainPtr domain,
virTypedParameterPtr ent;
int param_idx;
unsigned long long cpu_time;
bool result;
/* return the number of supported params */
if (nparams == 0 && ncpus != 0)
@ -13553,7 +13554,9 @@ qemuDomainGetPercpuStats(virDomainPtr domain,
id = start_cpu + ncpus - 1;
for (i = 0; i <= id; i++) {
if (!map[i]) {
if (virBitmapGetBit(map, i, &result) < 0)
goto cleanup;
if (!result) {
cpu_time = 0;
} else if (virStrToLong_ull(pos, &pos, 10, &cpu_time) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
@ -13585,7 +13588,7 @@ qemuDomainGetPercpuStats(virDomainPtr domain,
/* Check that the mapping of online cpus didn't change mid-parse. */
map2 = nodeGetCPUmap(domain->conn, &max_id, "present");
if (!map2 || memcmp(map, map2, VIR_DOMAIN_CPUMASK_LEN) != 0) {
if (!map2 || !virBitmapEqual(map, map2)) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("the set of online cpus changed while reading"));
goto cleanup;
@ -13593,7 +13596,9 @@ qemuDomainGetPercpuStats(virDomainPtr domain,
sum_cpu_pos = sum_cpu_time;
for (i = 0; i <= id; i++) {
if (!map[i])
if (virBitmapGetBit(map, i, &result) < 0)
goto cleanup;
if (!result)
cpu_time = 0;
else
cpu_time = *(sum_cpu_pos++);
@ -13611,8 +13616,8 @@ qemuDomainGetPercpuStats(virDomainPtr domain,
cleanup:
VIR_FREE(sum_cpu_time);
VIR_FREE(buf);
VIR_FREE(map);
VIR_FREE(map2);
virBitmapFree(map);
virBitmapFree(map2);
return rv;
}