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add function bitmapFromBytemap() to convert bytemap to bitmap

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This commit is contained in:
Hu Tao 2012-08-21 17:18:27 +08:00 committed by Daniel Veillard
parent 4b03d59167
commit 1fea56673c
1 changed files with 29 additions and 18 deletions
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47
src/conf/domain_conf.c
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@ -10935,6 +10935,34 @@ virDomainVcpuPinFindByVcpu(virDomainVcpuPinDefPtr *def,
return NULL;
}
static char *bitmapFromBytemap(unsigned char *bytemap, int maplen)
{
char *bitmap = NULL;
int i;
if (VIR_ALLOC_N(bitmap, VIR_DOMAIN_CPUMASK_LEN) < 0) {
virReportOOMError();
goto cleanup;
}
/* Reset bitmap to all 0s. */
for (i = 0; i < VIR_DOMAIN_CPUMASK_LEN; i++)
bitmap[i] = 0;
/* Convert bitmap (bytemap) to bitmap, which is byte map? */
for (i = 0; i < maplen; i++) {
int cur;
for (cur = 0; cur < 8; cur++) {
if (bytemap[i] & (1 << cur))
bitmap[i * 8 + cur] = 1;
}
}
cleanup:
return bitmap;
}
int
virDomainVcpuPinAdd(virDomainDefPtr def,
unsigned char *cpumap,
@ -10944,26 +10972,9 @@ virDomainVcpuPinAdd(virDomainDefPtr def,
virDomainVcpuPinDefPtr *vcpupin_list = NULL;
virDomainVcpuPinDefPtr vcpupin = NULL;
char *cpumask = NULL;
int i;
if (VIR_ALLOC_N(cpumask, VIR_DOMAIN_CPUMASK_LEN) < 0) {
virReportOOMError();
if ((cpumask = bitmapFromBytemap(cpumap, maplen)) == NULL)
goto cleanup;
}
/* Reset cpumask to all 0s. */
for (i = 0; i < VIR_DOMAIN_CPUMASK_LEN; i++)
cpumask[i] = 0;
/* Convert bitmap (cpumap) to cpumask, which is byte map? */
for (i = 0; i < maplen; i++) {
int cur;
for (cur = 0; cur < 8; cur++) {
if (cpumap[i] & (1 << cur))
cpumask[i * 8 + cur] = 1;
}
}
/* No vcpupin exists yet. */
if (!def->cputune.nvcpupin) {