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qemu: Refactor qemuDomainGetMemoryParameters

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Replace the for loops with case inside with temp variables and a macro.
This commit is contained in:
Peter Krempa 2015-06-15 20:27:17 +02:00
parent 809ba20ebe
commit 68ba0d8a89
1 changed files with 25 additions and 74 deletions
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99
src/qemu/qemu_driver.c
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@ -9919,6 +9919,13 @@ qemuDomainSetMemoryParameters(virDomainPtr dom,
return ret;
}
#define QEMU_ASSIGN_MEM_PARAM(index, name, value) \
if (index < *nparams && \
virTypedParameterAssign(&params[index], name, VIR_TYPED_PARAM_ULLONG, \
value) < 0) \
goto cleanup
static int
qemuDomainGetMemoryParameters(virDomainPtr dom,
virTypedParameterPtr params,
@ -9926,13 +9933,13 @@ qemuDomainGetMemoryParameters(virDomainPtr dom,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
size_t i;
virDomainObjPtr vm = NULL;
virDomainDefPtr persistentDef = NULL;
int ret = -1;
virCapsPtr caps = NULL;
qemuDomainObjPrivatePtr priv;
virQEMUDriverConfigPtr cfg = NULL;
unsigned long long swap_hard_limit, mem_hard_limit, mem_soft_limit;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG |
@ -9979,85 +9986,28 @@ qemuDomainGetMemoryParameters(virDomainPtr dom,
}
if (flags & VIR_DOMAIN_AFFECT_CONFIG) {
for (i = 0; i < *nparams && i < QEMU_NB_MEM_PARAM; i++) {
virMemoryParameterPtr param = &params[i];
unsigned long long value;
mem_hard_limit = persistentDef->mem.hard_limit;
mem_soft_limit = persistentDef->mem.soft_limit;
swap_hard_limit = persistentDef->mem.swap_hard_limit;
} else {
if (virCgroupGetMemoryHardLimit(priv->cgroup, &mem_hard_limit) < 0)
goto cleanup;
switch (i) {
case 0: /* fill memory hard limit here */
value = persistentDef->mem.hard_limit;
if (virTypedParameterAssign(param, VIR_DOMAIN_MEMORY_HARD_LIMIT,
VIR_TYPED_PARAM_ULLONG, value) < 0)
goto cleanup;
break;
if (virCgroupGetMemorySoftLimit(priv->cgroup, &mem_soft_limit) < 0)
goto cleanup;
case 1: /* fill memory soft limit here */
value = persistentDef->mem.soft_limit;
if (virTypedParameterAssign(param, VIR_DOMAIN_MEMORY_SOFT_LIMIT,
VIR_TYPED_PARAM_ULLONG, value) < 0)
goto cleanup;
break;
case 2: /* fill swap hard limit here */
value = persistentDef->mem.swap_hard_limit;
if (virTypedParameterAssign(param, VIR_DOMAIN_MEMORY_SWAP_HARD_LIMIT,
VIR_TYPED_PARAM_ULLONG, value) < 0)
goto cleanup;
break;
/* coverity[dead_error_begin] */
default:
break;
/* should not hit here */
}
}
goto out;
}
for (i = 0; i < *nparams && i < QEMU_NB_MEM_PARAM; i++) {
virTypedParameterPtr param = &params[i];
unsigned long long val = 0;
switch (i) {
case 0: /* fill memory hard limit here */
if (virCgroupGetMemoryHardLimit(priv->cgroup, &val) < 0)
if (virCgroupGetMemSwapHardLimit(priv->cgroup, &swap_hard_limit) < 0) {
if (!virLastErrorIsSystemErrno(ENOENT) &&
!virLastErrorIsSystemErrno(EOPNOTSUPP))
goto cleanup;
if (virTypedParameterAssign(param,
VIR_DOMAIN_MEMORY_HARD_LIMIT,
VIR_TYPED_PARAM_ULLONG, val) < 0)
goto cleanup;
break;
case 1: /* fill memory soft limit here */
if (virCgroupGetMemorySoftLimit(priv->cgroup, &val) < 0)
goto cleanup;
if (virTypedParameterAssign(param,
VIR_DOMAIN_MEMORY_SOFT_LIMIT,
VIR_TYPED_PARAM_ULLONG, val) < 0)
goto cleanup;
break;
case 2: /* fill swap hard limit here */
if (virCgroupGetMemSwapHardLimit(priv->cgroup, &val) < 0) {
if (!virLastErrorIsSystemErrno(ENOENT) &&
!virLastErrorIsSystemErrno(EOPNOTSUPP))
goto cleanup;
val = VIR_DOMAIN_MEMORY_PARAM_UNLIMITED;
}
if (virTypedParameterAssign(param,
VIR_DOMAIN_MEMORY_SWAP_HARD_LIMIT,
VIR_TYPED_PARAM_ULLONG, val) < 0)
goto cleanup;
break;
/* coverity[dead_error_begin] */
default:
break;
/* should not hit here */
swap_hard_limit = VIR_DOMAIN_MEMORY_PARAM_UNLIMITED;
}
}
out:
QEMU_ASSIGN_MEM_PARAM(0, VIR_DOMAIN_MEMORY_HARD_LIMIT, mem_hard_limit);
QEMU_ASSIGN_MEM_PARAM(1, VIR_DOMAIN_MEMORY_SOFT_LIMIT, mem_soft_limit);
QEMU_ASSIGN_MEM_PARAM(2, VIR_DOMAIN_MEMORY_SWAP_HARD_LIMIT, swap_hard_limit);
if (QEMU_NB_MEM_PARAM < *nparams)
*nparams = QEMU_NB_MEM_PARAM;
ret = 0;
@ -10068,6 +10018,7 @@ qemuDomainGetMemoryParameters(virDomainPtr dom,
virObjectUnref(cfg);
return ret;
}
#undef QEMU_ASSIGN_MEM_PARAM
static int
qemuDomainSetNumaParamsLive(virDomainObjPtr vm,