/*
* Handle a sample callback from the PkaSourceSimple.
*/
static inline void
cpu_sample (PkaSourceSimple *source,
gpointer user_data)
{
CpuData *cpud = user_data;
gchar *curr;
gchar fileBuf[1024];
gint cpuData[10];
/*
* Create and deliver our manifest if it has not yet been done.
*/
if (G_UNLIKELY(!cpud->manifest)) {
cpud->manifest = pka_manifest_sized_new(17);
pka_manifest_append(cpud->manifest, "CPU Number", G_TYPE_INT);
pka_manifest_append(cpud->manifest, "User", G_TYPE_INT);
pka_manifest_append(cpud->manifest, "Nice", G_TYPE_INT);
pka_manifest_append(cpud->manifest, "System", G_TYPE_INT);
pka_manifest_append(cpud->manifest, "Idle", G_TYPE_INT);
pka_manifest_append(cpud->manifest, "I/O Wait", G_TYPE_INT);
pka_manifest_append(cpud->manifest, "IRQ", G_TYPE_INT);
pka_manifest_append(cpud->manifest, "Soft IRQ", G_TYPE_INT);
pka_manifest_append(cpud->manifest, "VM Stolen", G_TYPE_INT);
pka_manifest_append(cpud->manifest, "VM Guest", G_TYPE_INT);
pka_source_deliver_manifest(PKA_SOURCE(source), cpud->manifest);
}
// Read in /proc/stat first.
src_utils_read_file("/proc/stat", fileBuf, 1024);
curr = fileBuf;
while (curr != NULL) {
gchar *next = src_utils_str_tok('\n', curr);
PkaSample *s;
gint i;
if (parse_cpu_stat_line(curr, cpuData)) {
// Then cpuData has valid data. Return a sample.
s = pka_sample_new();
for (i = 0; i < 10; i++)
pka_sample_append_int(s, i+1, cpuData[i]);
pka_source_deliver_sample(PKA_SOURCE(source), s);
pka_sample_unref(s);
}
curr = next;
}
}
/**
* pka_manager_add_source:
* @context: A #PkaContext.
* @plugin: A #PkaPlugin.
* @source: A location for a #PkaSource.
* @error: A location for a #GError or %NULL.
*
* Creates a new source in the Perfkit Agent. If the context does
* not have permissions to create the source, this operation will fail.
*
* If successful, the newly created instance is stored in @source.
*
* The caller owns a reference to the source and should free it with
* g_object_unref().
*
* Returns: %TRUE if successful; otherwise %FALSE.
* Side effects: None.
*/
gboolean
pka_manager_add_source (PkaContext *context, /* IN */
PkaPlugin *plugin, /* IN */
PkaSource **source, /* OUT */
GError **error) /* OUT */
{
gint source_id;
g_return_val_if_fail(context != NULL, FALSE);
g_return_val_if_fail(source != NULL, FALSE);
g_return_val_if_fail(PKA_IS_PLUGIN(plugin), FALSE);
ENTRY;
AUTHORIZE_IOCTL(context, ADD_SOURCE);
if (pka_plugin_get_plugin_type(plugin) != PKA_PLUGIN_SOURCE) {
g_set_error(error, PKA_PLUGIN_ERROR, PKA_PLUGIN_ERROR_INVALID_TYPE,
"The specified plugin is not a source plugin.");
RETURN(FALSE);
}
if (!(*source = PKA_SOURCE(pka_plugin_create(plugin, error)))) {
RETURN(FALSE);
}
source_id = pka_source_get_id(*source);
INFO(Source, "Added source %d on behalf of context %d.",
source_id, pka_context_get_id(context));
G_LOCK(sources);
g_ptr_array_add(manager.sources, g_object_ref(*source));
G_UNLOCK(sources);
NOTIFY_LISTENERS(source_added, source_id);
RETURN(TRUE);
}
