mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2024-07-12 21:05:48 +00:00
qemu: Refactor qemuDomainGetBlkioParameters
Get rid of lots of duplicated code.
This commit is contained in:
Peter Krempa
parent
31b4d75877
commit
9f50f6e288
@ -9080,6 +9080,58 @@ qemuDomainSetBlkioParameters(virDomainPtr dom,
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return ret;
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}
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static int
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qemuDomainGetBlkioParametersAssignFromDef(virDomainDefPtr def,
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virTypedParameterPtr params,
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int *nparams,
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int maxparams)
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{
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virBuffer buf = VIR_BUFFER_INITIALIZER;
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char *data = NULL;
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size_t i;
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#define QEMU_BLKIO_ASSIGN(param, format, name) \
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if (*nparams < maxparams) { \
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for (i = 0; i < def->blkio.ndevices; i++) { \
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if (!def->blkio.devices[i].param) \
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continue; \
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virBufferAsprintf(&buf, "%s," format ",", \
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def->blkio.devices[i].path, \
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def->blkio.devices[i].param); \
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} \
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virBufferTrim(&buf, ",", -1); \
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if (virBufferCheckError(&buf) < 0) \
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goto error; \
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data = virBufferContentAndReset(&buf); \
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if (virTypedParameterAssign(&(params[(*nparams)++]), name, \
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VIR_TYPED_PARAM_STRING, data) < 0) \
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goto error; \
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VIR_FREE(data); \
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}
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/* blkiotune.device_weight */
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QEMU_BLKIO_ASSIGN(weight, "%u", VIR_DOMAIN_BLKIO_DEVICE_WEIGHT);
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/* blkiotune.device_read_iops */
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QEMU_BLKIO_ASSIGN(riops, "%u", VIR_DOMAIN_BLKIO_DEVICE_READ_IOPS);
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/* blkiotune.device_write_iops */
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QEMU_BLKIO_ASSIGN(wiops, "%u", VIR_DOMAIN_BLKIO_DEVICE_WRITE_IOPS);
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/* blkiotune.device_read_bps */
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QEMU_BLKIO_ASSIGN(rbps, "%llu", VIR_DOMAIN_BLKIO_DEVICE_READ_BPS);
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/* blkiotune.device_write_bps */
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QEMU_BLKIO_ASSIGN(wbps, "%llu", VIR_DOMAIN_BLKIO_DEVICE_WRITE_BPS);
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#undef QEMU_BLKIO_ASSIGN
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return 0;
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error:
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VIR_FREE(data);
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virBufferFreeAndReset(&buf);
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return -1;
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}
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static int
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qemuDomainGetBlkioParameters(virDomainPtr dom,
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virTypedParameterPtr params,
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@ -9087,10 +9139,10 @@ qemuDomainGetBlkioParameters(virDomainPtr dom,
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unsigned int flags)
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{
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virQEMUDriverPtr driver = dom->conn->privateData;
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size_t i, j;
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virDomainObjPtr vm = NULL;
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virDomainDefPtr def = NULL;
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virDomainDefPtr persistentDef = NULL;
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int maxparams = QEMU_NB_BLKIO_PARAM;
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unsigned int val;
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int ret = -1;
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qemuDomainObjPrivatePtr priv;
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@ -9123,8 +9175,12 @@ qemuDomainGetBlkioParameters(virDomainPtr dom,
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*nparams = QEMU_NB_BLKIO_PARAM;
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ret = 0;
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goto cleanup;
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} else if (*nparams < maxparams) {
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maxparams = *nparams;
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}
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*nparams = 0;
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if (virDomainObjGetDefs(vm, flags, &def, &persistentDef) < 0)
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goto cleanup;
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@ -9135,347 +9191,31 @@ qemuDomainGetBlkioParameters(virDomainPtr dom,
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goto cleanup;
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}
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for (i = 0; i < *nparams && i < QEMU_NB_BLKIO_PARAM; i++) {
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virTypedParameterPtr param = ¶ms[i];
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val = 0;
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/* fill blkio weight here */
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if (virCgroupGetBlkioWeight(priv->cgroup, &val) < 0)
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goto cleanup;
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if (virTypedParameterAssign(&(params[(*nparams)++]),
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VIR_DOMAIN_BLKIO_WEIGHT,
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VIR_TYPED_PARAM_UINT, val) < 0)
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goto cleanup;
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switch (i) {
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case 0: /* fill blkio weight here */
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if (virCgroupGetBlkioWeight(priv->cgroup, &val) < 0)
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goto cleanup;
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if (virTypedParameterAssign(param, VIR_DOMAIN_BLKIO_WEIGHT,
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VIR_TYPED_PARAM_UINT, val) < 0)
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goto cleanup;
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break;
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if (qemuDomainGetBlkioParametersAssignFromDef(def, params, nparams,
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maxparams) < 0)
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goto cleanup;
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case 1: /* blkiotune.device_weight */
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if (def->blkio.ndevices > 0) {
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virBuffer buf = VIR_BUFFER_INITIALIZER;
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bool comma = false;
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for (j = 0; j < def->blkio.ndevices; j++) {
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if (!def->blkio.devices[j].weight)
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continue;
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if (comma)
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virBufferAddChar(&buf, ',');
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else
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comma = true;
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virBufferAsprintf(&buf, "%s,%u",
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def->blkio.devices[j].path,
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def->blkio.devices[j].weight);
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}
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if (virBufferCheckError(&buf) < 0)
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goto cleanup;
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param->value.s = virBufferContentAndReset(&buf);
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}
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if (virTypedParameterAssign(param,
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VIR_DOMAIN_BLKIO_DEVICE_WEIGHT,
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VIR_TYPED_PARAM_STRING,
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param->value.s) < 0)
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goto cleanup;
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break;
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case 2: /* blkiotune.device_read_iops */
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if (def->blkio.ndevices > 0) {
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virBuffer buf = VIR_BUFFER_INITIALIZER;
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bool comma = false;
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for (j = 0; j < def->blkio.ndevices; j++) {
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if (!def->blkio.devices[j].riops)
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continue;
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if (comma)
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virBufferAddChar(&buf, ',');
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else
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comma = true;
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virBufferAsprintf(&buf, "%s,%u",
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def->blkio.devices[j].path,
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def->blkio.devices[j].riops);
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}
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if (virBufferCheckError(&buf) < 0)
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goto cleanup;
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param->value.s = virBufferContentAndReset(&buf);
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}
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if (virTypedParameterAssign(param,
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VIR_DOMAIN_BLKIO_DEVICE_READ_IOPS,
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VIR_TYPED_PARAM_STRING,
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param->value.s) < 0)
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goto cleanup;
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break;
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case 3: /* blkiotune.device_write_iops */
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if (def->blkio.ndevices > 0) {
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virBuffer buf = VIR_BUFFER_INITIALIZER;
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bool comma = false;
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for (j = 0; j < def->blkio.ndevices; j++) {
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if (!def->blkio.devices[j].wiops)
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continue;
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if (comma)
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virBufferAddChar(&buf, ',');
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else
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comma = true;
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virBufferAsprintf(&buf, "%s,%u",
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def->blkio.devices[j].path,
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def->blkio.devices[j].wiops);
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}
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if (virBufferCheckError(&buf) < 0)
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goto cleanup;
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param->value.s = virBufferContentAndReset(&buf);
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}
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if (virTypedParameterAssign(param,
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VIR_DOMAIN_BLKIO_DEVICE_WRITE_IOPS,
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VIR_TYPED_PARAM_STRING,
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param->value.s) < 0)
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goto cleanup;
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break;
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case 4: /* blkiotune.device_read_bps */
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if (def->blkio.ndevices > 0) {
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virBuffer buf = VIR_BUFFER_INITIALIZER;
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bool comma = false;
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for (j = 0; j < def->blkio.ndevices; j++) {
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if (!def->blkio.devices[j].rbps)
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continue;
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if (comma)
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virBufferAddChar(&buf, ',');
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else
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comma = true;
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virBufferAsprintf(&buf, "%s,%llu",
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def->blkio.devices[j].path,
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def->blkio.devices[j].rbps);
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}
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if (virBufferCheckError(&buf) < 0)
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goto cleanup;
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param->value.s = virBufferContentAndReset(&buf);
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}
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if (virTypedParameterAssign(param,
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VIR_DOMAIN_BLKIO_DEVICE_READ_BPS,
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VIR_TYPED_PARAM_STRING,
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param->value.s) < 0)
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goto cleanup;
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break;
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case 5: /* blkiotune.device_write_bps */
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if (def->blkio.ndevices > 0) {
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virBuffer buf = VIR_BUFFER_INITIALIZER;
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bool comma = false;
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for (j = 0; j < def->blkio.ndevices; j++) {
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if (!def->blkio.devices[j].wbps)
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continue;
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if (comma)
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virBufferAddChar(&buf, ',');
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else
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comma = true;
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virBufferAsprintf(&buf, "%s,%llu",
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def->blkio.devices[j].path,
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def->blkio.devices[j].wbps);
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}
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if (virBufferCheckError(&buf) < 0)
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goto cleanup;
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param->value.s = virBufferContentAndReset(&buf);
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}
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if (virTypedParameterAssign(param,
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VIR_DOMAIN_BLKIO_DEVICE_WRITE_BPS,
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VIR_TYPED_PARAM_STRING,
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param->value.s) < 0)
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goto cleanup;
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break;
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/* coverity[dead_error_begin] */
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default:
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break;
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/* should not hit here */
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}
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}
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} else if (persistentDef) {
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for (i = 0; i < *nparams && i < QEMU_NB_BLKIO_PARAM; i++) {
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virTypedParameterPtr param = ¶ms[i];
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val = 0;
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param->value.ui = 0;
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param->type = VIR_TYPED_PARAM_UINT;
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/* fill blkio weight here */
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if (virTypedParameterAssign(&(params[(*nparams)++]),
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VIR_DOMAIN_BLKIO_WEIGHT,
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VIR_TYPED_PARAM_UINT,
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persistentDef->blkio.weight) < 0)
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goto cleanup;
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switch (i) {
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case 0: /* fill blkio weight here */
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if (virStrcpyStatic(param->field, VIR_DOMAIN_BLKIO_WEIGHT) == NULL) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("Field name '%s' too long"),
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VIR_DOMAIN_BLKIO_WEIGHT);
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goto cleanup;
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}
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param->value.ui = persistentDef->blkio.weight;
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break;
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case 1: /* blkiotune.device_weight */
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if (persistentDef->blkio.ndevices > 0) {
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virBuffer buf = VIR_BUFFER_INITIALIZER;
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bool comma = false;
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for (j = 0; j < persistentDef->blkio.ndevices; j++) {
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if (!persistentDef->blkio.devices[j].weight)
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continue;
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if (comma)
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virBufferAddChar(&buf, ',');
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else
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comma = true;
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virBufferAsprintf(&buf, "%s,%u",
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persistentDef->blkio.devices[j].path,
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persistentDef->blkio.devices[j].weight);
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}
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if (virBufferCheckError(&buf) < 0)
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goto cleanup;
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param->value.s = virBufferContentAndReset(&buf);
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}
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if (!param->value.s && VIR_STRDUP(param->value.s, "") < 0)
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goto cleanup;
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param->type = VIR_TYPED_PARAM_STRING;
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if (virStrcpyStatic(param->field,
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VIR_DOMAIN_BLKIO_DEVICE_WEIGHT) == NULL) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("Field name '%s' too long"),
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VIR_DOMAIN_BLKIO_DEVICE_WEIGHT);
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goto cleanup;
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}
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break;
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case 2: /* blkiotune.device_read_iops */
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if (persistentDef->blkio.ndevices > 0) {
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virBuffer buf = VIR_BUFFER_INITIALIZER;
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bool comma = false;
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for (j = 0; j < persistentDef->blkio.ndevices; j++) {
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if (!persistentDef->blkio.devices[j].riops)
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continue;
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if (comma)
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virBufferAddChar(&buf, ',');
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else
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comma = true;
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virBufferAsprintf(&buf, "%s,%u",
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persistentDef->blkio.devices[j].path,
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persistentDef->blkio.devices[j].riops);
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}
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if (virBufferCheckError(&buf) < 0)
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goto cleanup;
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param->value.s = virBufferContentAndReset(&buf);
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}
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if (!param->value.s && VIR_STRDUP(param->value.s, "") < 0)
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goto cleanup;
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param->type = VIR_TYPED_PARAM_STRING;
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if (virStrcpyStatic(param->field,
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VIR_DOMAIN_BLKIO_DEVICE_READ_IOPS) == NULL) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("Field name '%s' too long"),
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VIR_DOMAIN_BLKIO_DEVICE_READ_IOPS);
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goto cleanup;
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}
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break;
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case 3: /* blkiotune.device_write_iops */
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if (persistentDef->blkio.ndevices > 0) {
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virBuffer buf = VIR_BUFFER_INITIALIZER;
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bool comma = false;
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for (j = 0; j < persistentDef->blkio.ndevices; j++) {
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if (!persistentDef->blkio.devices[j].wiops)
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continue;
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if (comma)
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virBufferAddChar(&buf, ',');
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else
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comma = true;
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virBufferAsprintf(&buf, "%s,%u",
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persistentDef->blkio.devices[j].path,
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persistentDef->blkio.devices[j].wiops);
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}
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if (virBufferCheckError(&buf) < 0)
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goto cleanup;
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param->value.s = virBufferContentAndReset(&buf);
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}
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if (!param->value.s && VIR_STRDUP(param->value.s, "") < 0)
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goto cleanup;
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param->type = VIR_TYPED_PARAM_STRING;
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if (virStrcpyStatic(param->field,
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VIR_DOMAIN_BLKIO_DEVICE_WRITE_IOPS) == NULL) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("Field name '%s' too long"),
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VIR_DOMAIN_BLKIO_DEVICE_WRITE_IOPS);
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goto cleanup;
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}
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break;
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case 4: /* blkiotune.device_read_bps */
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if (persistentDef->blkio.ndevices > 0) {
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virBuffer buf = VIR_BUFFER_INITIALIZER;
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bool comma = false;
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for (j = 0; j < persistentDef->blkio.ndevices; j++) {
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if (!persistentDef->blkio.devices[j].rbps)
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continue;
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if (comma)
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virBufferAddChar(&buf, ',');
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else
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comma = true;
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virBufferAsprintf(&buf, "%s,%llu",
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persistentDef->blkio.devices[j].path,
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persistentDef->blkio.devices[j].rbps);
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}
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if (virBufferCheckError(&buf) < 0)
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goto cleanup;
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param->value.s = virBufferContentAndReset(&buf);
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}
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if (!param->value.s && VIR_STRDUP(param->value.s, "") < 0)
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goto cleanup;
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param->type = VIR_TYPED_PARAM_STRING;
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if (virStrcpyStatic(param->field,
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VIR_DOMAIN_BLKIO_DEVICE_READ_BPS) == NULL) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("Field name '%s' too long"),
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VIR_DOMAIN_BLKIO_DEVICE_READ_BPS);
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goto cleanup;
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}
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break;
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case 5: /* blkiotune.device_write_bps */
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if (persistentDef->blkio.ndevices > 0) {
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virBuffer buf = VIR_BUFFER_INITIALIZER;
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bool comma = false;
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for (j = 0; j < persistentDef->blkio.ndevices; j++) {
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if (!persistentDef->blkio.devices[j].wbps)
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continue;
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if (comma)
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virBufferAddChar(&buf, ',');
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else
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comma = true;
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virBufferAsprintf(&buf, "%s,%llu",
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persistentDef->blkio.devices[j].path,
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persistentDef->blkio.devices[j].wbps);
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}
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if (virBufferCheckError(&buf) < 0)
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goto cleanup;
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param->value.s = virBufferContentAndReset(&buf);
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}
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if (!param->value.s && VIR_STRDUP(param->value.s, "") < 0)
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goto cleanup;
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param->type = VIR_TYPED_PARAM_STRING;
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if (virStrcpyStatic(param->field,
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VIR_DOMAIN_BLKIO_DEVICE_WRITE_BPS) == NULL) {
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virReportError(VIR_ERR_INTERNAL_ERROR,
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_("Field name '%s' too long"),
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VIR_DOMAIN_BLKIO_DEVICE_WRITE_BPS);
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goto cleanup;
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}
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break;
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/* coverity[dead_error_begin] */
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default:
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break;
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/* should not hit here */
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}
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}
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if (qemuDomainGetBlkioParametersAssignFromDef(persistentDef, params,
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nparams, maxparams) < 0)
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goto cleanup;
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}
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if (QEMU_NB_BLKIO_PARAM < *nparams)
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*nparams = QEMU_NB_BLKIO_PARAM;
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ret = 0;
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cleanup:
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