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virNodeGetCPUStats: Implement remote protocol

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Signed-off-by: Minoru Usui <usui@mxm.nes.nec.co.jp>
This commit is contained in:
Minoru Usui 2011-06-07 10:01:12 +09:00 committed by Eric Blake
parent 211c9f7b66
commit daea15aa40
4 changed files with 181 additions and 1 deletions
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77
daemon/remote.c
View File

@ -1516,6 +1516,83 @@ cleanup:
return rv;
}
static int
remoteDispatchNodeGetCPUStats (struct qemud_server *server ATTRIBUTE_UNUSED,
struct qemud_client *client ATTRIBUTE_UNUSED,
virConnectPtr conn,
remote_message_header *hdr ATTRIBUTE_UNUSED,
remote_error *rerr,
remote_node_get_cpu_stats_args *args,
remote_node_get_cpu_stats_ret *ret)
{
virCPUStatsPtr params = NULL;
int i;
int cpuNum = args->cpuNum;
int nparams = args->nparams;
unsigned int flags;
int rv = -1;
if (!conn) {
virNetError(VIR_ERR_INTERNAL_ERROR, "%s", _("connection not open"));
goto cleanup;
}
flags = args->flags;
if (nparams > REMOTE_NODE_CPU_STATS_MAX) {
virNetError(VIR_ERR_INTERNAL_ERROR, "%s", _("nparams too large"));
goto cleanup;
}
if (VIR_ALLOC_N(params, nparams) < 0) {
virReportOOMError();
goto cleanup;
}
if (virNodeGetCPUStats(conn, cpuNum, params, &nparams, flags) < 0)
goto cleanup;
/* In this case, we need to send back the number of stats
* supported
*/
if (args->nparams == 0) {
ret->nparams = nparams;
goto success;
}
/* Serialise the memory parameters. */
ret->params.params_len = nparams;
if (VIR_ALLOC_N(ret->params.params_val, nparams) < 0)
goto no_memory;
for (i = 0; i < nparams; ++i) {
/* remoteDispatchClientRequest will free this: */
ret->params.params_val[i].field = strdup(params[i].field);
if (ret->params.params_val[i].field == NULL)
goto no_memory;
ret->params.params_val[i].value = params[i].value;
}
success:
rv = 0;
cleanup:
if (rv < 0) {
remoteDispatchError(rerr);
if (ret->params.params_val) {
for (i = 0; i < nparams; i++)
VIR_FREE(ret->params.params_val[i].field);
VIR_FREE(ret->params.params_val);
}
}
VIR_FREE(params);
return rv;
no_memory:
virReportOOMError();
goto cleanup;
}
/*-------------------------------------------------------------*/
static int

67
src/remote/remote_driver.c
View File

@ -1696,6 +1696,72 @@ done:
return rv;
}
static int
remoteNodeGetCPUStats (virConnectPtr conn,
int cpuNum,
virCPUStatsPtr params, int *nparams,
unsigned int flags)
{
int rv = -1;
remote_node_get_cpu_stats_args args;
remote_node_get_cpu_stats_ret ret;
int i = -1;
struct private_data *priv = conn->privateData;
remoteDriverLock(priv);
args.nparams = *nparams;
args.cpuNum = cpuNum;
args.flags = flags;
memset (&ret, 0, sizeof ret);
if (call (conn, priv, 0, REMOTE_PROC_NODE_GET_CPU_STATS,
(xdrproc_t) xdr_remote_node_get_cpu_stats_args,
(char *) &args,
(xdrproc_t) xdr_remote_node_get_cpu_stats_ret,
(char *) &ret) == -1)
goto done;
/* Check the length of the returned list carefully. */
if (ret.params.params_len > REMOTE_NODE_CPU_STATS_MAX ||
ret.params.params_len > *nparams) {
remoteError(VIR_ERR_RPC, "%s",
_("remoteNodeGetCPUStats: "
"returned number of stats exceeds limit"));
goto cleanup;
}
/* Handle the case when the caller does not know the number of stats
* and is asking for the number of stats supported
*/
if (*nparams == 0) {
*nparams = ret.nparams;
rv = 0;
goto cleanup;
}
*nparams = ret.params.params_len;
/* Deserialise the result. */
for (i = 0; i < *nparams; ++i) {
if (virStrcpyStatic(params[i].field, ret.params.params_val[i].field) == NULL) {
remoteError(VIR_ERR_INTERNAL_ERROR,
_("Stats %s too big for destination"),
ret.params.params_val[i].field);
goto cleanup;
}
params[i].value = ret.params.params_val[i].value;
}
rv = 0;
cleanup:
xdr_free ((xdrproc_t) xdr_remote_node_get_cpu_stats_ret,
(char *) &ret);
done:
remoteDriverUnlock(priv);
return rv;
}
static int
remoteNodeGetCellsFreeMemory(virConnectPtr conn,
unsigned long long *freeMems,
@ -6294,6 +6360,7 @@ static virDriver remote_driver = {
.domainBlockPeek = remoteDomainBlockPeek, /* 0.4.2 */
.domainMemoryPeek = remoteDomainMemoryPeek, /* 0.4.2 */
.domainGetBlockInfo = remoteDomainGetBlockInfo, /* 0.8.1 */
.nodeGetCPUStats = remoteNodeGetCPUStats, /* 0.9.3 */
.nodeGetCellsFreeMemory = remoteNodeGetCellsFreeMemory, /* 0.3.3 */
.nodeGetFreeMemory = remoteNodeGetFreeMemory, /* 0.3.3 */
.domainEventRegister = remoteDomainEventRegister, /* 0.5.0 */

22
src/remote/remote_protocol.x
View File

@ -134,6 +134,9 @@ const REMOTE_DOMAIN_BLKIO_PARAMETERS_MAX = 16;
/* Upper limit on list of memory parameters. */
const REMOTE_DOMAIN_MEMORY_PARAMETERS_MAX = 16;
/* Upper limit on list of node cpu stats. */
const REMOTE_NODE_CPU_STATS_MAX = 16;
/* Upper limit on number of NUMA cells */
const REMOTE_NODE_MAX_CELLS = 1024;
@ -324,6 +327,11 @@ struct remote_typed_param {
remote_typed_param_value value;
};
struct remote_node_get_cpu_stats {
remote_nonnull_string field;
unsigned hyper value;
};
/*----- Calls. -----*/
/* For each call we may have a 'remote_CALL_args' and 'remote_CALL_ret'
@ -408,6 +416,17 @@ struct remote_get_capabilities_ret {
remote_nonnull_string capabilities;
};
struct remote_node_get_cpu_stats_args {
int cpuNum;
int nparams;
unsigned int flags;
};
struct remote_node_get_cpu_stats_ret {
remote_node_get_cpu_stats params<REMOTE_NODE_CPU_STATS_MAX>;
int nparams;
};
struct remote_node_get_cells_free_memory_args {
int startCell;
int maxcells;
@ -2319,7 +2338,8 @@ enum remote_procedure {
REMOTE_PROC_DOMAIN_GET_SCHEDULER_PARAMETERS_FLAGS = 223, /* skipgen autogen */
REMOTE_PROC_DOMAIN_EVENT_CONTROL_ERROR = 224, /* skipgen skipgen */
REMOTE_PROC_DOMAIN_PIN_VCPU_FLAGS = 225, /* skipgen autogen */
REMOTE_PROC_DOMAIN_SEND_KEY = 226 /* autogen autogen */
REMOTE_PROC_DOMAIN_SEND_KEY = 226, /* autogen autogen */
REMOTE_PROC_NODE_GET_CPU_STATS = 227 /* skipgen skipgen */
/*
* Notice how the entries are grouped in sets of 10 ?

16
src/remote_protocol-structs
View File

@ -71,6 +71,10 @@ struct remote_typed_param {
remote_nonnull_string field;
remote_typed_param_value value;
};
struct remote_node_get_cpu_stats {
remote_nonnull_string field;
uint64_t value;
};
struct remote_open_args {
remote_string name;
int flags;
@ -121,6 +125,18 @@ struct remote_node_get_info_ret {
struct remote_get_capabilities_ret {
remote_nonnull_string capabilities;
};
struct remote_node_get_cpu_stats_args {
int cpuNum;
int nparams;
u_int flags;
};
struct remote_node_get_cpu_stats_ret {
struct {
u_int params_len;
remote_node_get_cpu_stats * params_val;
} params;
int nparams;
};
struct remote_node_get_cells_free_memory_args {
int startCell;
int maxcells;