本文整理汇总了C++中SystemInfo::CPUCount方法的典型用法代码示例。如果您正苦于以下问题：C++ SystemInfo::CPUCount方法的具体用法？C++ SystemInfo::CPUCount怎么用？C++ SystemInfo::CPUCount使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类SystemInfo的用法示例。
在下文中一共展示了SystemInfo::CPUCount方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: BMessage
void
ActivityView::MouseDown(BPoint where)
{
int32 buttons = B_SECONDARY_MOUSE_BUTTON;
if (Looper() != NULL && Looper()->CurrentMessage() != NULL)
Looper()->CurrentMessage()->FindInt32("buttons", &buttons);
if (buttons == B_PRIMARY_MOUSE_BUTTON) {
fZoomPoint = where;
fOriginalResolution = fDrawResolution;
fZooming = true;
SetMouseEventMask(B_POINTER_EVENTS);
return;
}
BPopUpMenu *menu = new BPopUpMenu(B_EMPTY_STRING, false, false);
menu->SetFont(be_plain_font);
BMenu* additionalMenu = new BMenu(B_TRANSLATE("Additional items"));
additionalMenu->SetFont(be_plain_font);
SystemInfo info;
BMenuItem* item;
for (int32 i = 0; i < DataSource::CountSources(); i++) {
const DataSource* source = DataSource::SourceAt(i);
if (source->MultiCPUOnly() && info.CPUCount() == 1)
continue;
BMessage* message = new BMessage(kMsgToggleDataSource);
message->AddInt32("index", i);
item = new BMenuItem(source->Name(), message);
if (FindDataSource(source))
item->SetMarked(true);
if (source->Primary())
menu->AddItem(item);
else
additionalMenu->AddItem(item);
}
menu->AddItem(new BMenuItem(additionalMenu));
menu->AddSeparatorItem();
menu->AddItem(item = new BMenuItem(B_TRANSLATE("Show legend"),
new BMessage(kMsgToggleLegend)));
item->SetMarked(fShowLegend);
menu->SetTargetForItems(this);
additionalMenu->SetTargetForItems(this);
ActivityWindow* window = dynamic_cast<ActivityWindow*>(Window());
if (window != NULL && window->ActivityViewCount() > 1) {
menu->AddSeparatorItem();
BMessage* message = new BMessage(kMsgRemoveView);
message->AddPointer("view", this);
menu->AddItem(item = new BMenuItem(B_TRANSLATE("Remove graph"),
message));
item->SetTarget(window);
}
ConvertToScreen(&where);
menu->Go(where, true, false, true);
}示例2: _
status_t
ActivityView::AddDataSource(const DataSource* source, const BMessage* state)
{
if (source == NULL)
return B_BAD_VALUE;
BAutolock _(fSourcesLock);
// Search for the correct insert spot to maintain the order of the sources
int32 insert = DataSource::IndexOf(source);
for (int32 i = 0; i < fSources.CountItems() && i < insert; i++) {
DataSource* before = fSources.ItemAt(i);
if (DataSource::IndexOf(before) > insert) {
insert = i;
break;
}
}
if (insert > fSources.CountItems())
insert = fSources.CountItems();
// Generate DataHistory and ViewHistory objects for the source
// (one might need one history per CPU)
uint32 count = 1;
if (source->PerCPU()) {
SystemInfo info;
count = info.CPUCount();
}
for (uint32 i = 0; i < count; i++) {
DataHistory* values = new(std::nothrow) DataHistory(10 * 60000000LL,
RefreshInterval());
ListAddDeleter<DataHistory> valuesDeleter(fValues, values, insert);
ViewHistory* viewValues = new(std::nothrow) ViewHistory;
ListAddDeleter<ViewHistory> viewValuesDeleter(fViewValues, viewValues,
insert);
if (valuesDeleter.Failed() || viewValuesDeleter.Failed())
return B_NO_MEMORY;
values->SetScale(_ScaleFor(source->ScaleType()));
DataSource* copy;
if (source->PerCPU())
copy = source->CopyForCPU(i);
else
copy = source->Copy();
ListAddDeleter<DataSource> sourceDeleter(fSources, copy, insert);
if (sourceDeleter.Failed())
return B_NO_MEMORY;
BString colorName = source->Name();
colorName << " color";
if (state != NULL) {
const rgb_color* color = NULL;
ssize_t colorLength;
if (state->FindData(colorName.String(), B_RGB_COLOR_TYPE, i,
(const void**)&color, &colorLength) == B_OK
&& colorLength == sizeof(rgb_color))
copy->SetColor(*color);
}
valuesDeleter.Detach();
viewValuesDeleter.Detach();
sourceDeleter.Detach();
insert++;
}
#ifdef __HAIKU__
InvalidateLayout();
#endif
return B_OK;
}