[libvirt] [PATCHv2 5/9] libvirt.h.in: Add new cpumap macro VIR_CPU_USED
New macro VIR_CPU_USED added to facilitate the interpretation of
cpu maps.
Further, hardened the other cpumap macros against invocations
like VIR_CPU_USE(cpumap + 1, cpu)
Signed-off-by: Viktor Mihajlovski <mihajlov(a)linux.vnet.ibm.com>
---
include/libvirt/libvirt.h.in | 20 ++++++++++++++++----
1 files changed, 16 insertions(+), 4 deletions(-)
diff --git a/include/libvirt/libvirt.h.in b/include/libvirt/libvirt.h.in
index 6b72159..3e8e4f8 100644
--- a/include/libvirt/libvirt.h.in
+++ b/include/libvirt/libvirt.h.in
@@ -1954,7 +1954,7 @@ int virDomainGetEmulatorPinInfo (virDomainPtr
domain,
* USE_CPU macro set the bit (CPU usable) of the related cpu in cpumap.
*/
-#define VIR_USE_CPU(cpumap,cpu) (cpumap[(cpu)/8] |= (1<<((cpu)%8)))
+#define VIR_USE_CPU(cpumap,cpu) ((cpumap)[(cpu)/8] |= (1<<((cpu)%8)))
/**
* VIR_UNUSE_CPU:
@@ -1965,7 +1965,19 @@ int virDomainGetEmulatorPinInfo (virDomainPtr
domain,
* USE_CPU macro reset the bit (CPU not usable) of the related cpu in cpumap.
*/
-#define VIR_UNUSE_CPU(cpumap,cpu) (cpumap[(cpu)/8] &= ~(1<<((cpu)%8)))
+#define VIR_UNUSE_CPU(cpumap,cpu) ((cpumap)[(cpu)/8] &= ~(1<<((cpu)%8)))
+
+/**
+ * VIR_CPU_USED:
+ * @cpumap: pointer to a bit map of real CPUs (in 8-bit bytes) (IN)
+ * @cpu: the physical CPU number
+ *
+ * This macro can be used in conjunction with virNodeGetCPUMapFlags() API.
+ * VIR_CPU_USED returns true if the bit of the related CPU is set.
+ *
+ */
+
+#define VIR_CPU_USED(cpumap,cpu) ((cpumap)[(cpu)/8] & (1<<((cpu)%8)))
/**
* VIR_CPU_MAPLEN:
@@ -1976,7 +1988,7 @@ int virDomainGetEmulatorPinInfo (virDomainPtr
domain,
* CPU map between a single virtual & all physical CPUs of a domain.
*/
-#define VIR_CPU_MAPLEN(cpu) (((cpu)+7)/8)
+#define VIR_CPU_MAPLEN(cpu) (((cpu)+7)/8)
int virDomainGetVcpus (virDomainPtr domain,
@@ -1998,7 +2010,7 @@ int virDomainGetVcpus (virDomainPtr
domain,
*/
#define VIR_CPU_USABLE(cpumaps,maplen,vcpu,cpu) \
- (cpumaps[((vcpu)*(maplen))+((cpu)/8)] & (1<<((cpu)%8)))
+ ((cpumaps)[((vcpu)*(maplen))+((cpu)/8)] & (1<<((cpu)%8)))
/**
* VIR_COPY_CPUMAP:
--
1.7.0.4