std::vector<ThermalRelationshipTableEntry> BinaryParse::passiveTrtObject(UInt32 dataLength, void* esifData)
{
std::vector<ThermalRelationshipTableEntry> controls;
UInt8* data = reinterpret_cast<UInt8*>(esifData);
struct EsifDataBinaryTrtPackage* currentRow = reinterpret_cast<struct EsifDataBinaryTrtPackage*>(data);
validateData(dataLength);
UIntN rows = countTrtRows(dataLength, data);
// Reset currentRow to point to the beginning of the data block
data = reinterpret_cast<UInt8*>(esifData);
currentRow = reinterpret_cast<struct EsifDataBinaryTrtPackage*>(data);
for (UIntN i = 0; i < rows; i++)
{
// Since the TRT has 2 strings in it, the process for extracting them is:
// 1. Extract the source at the beginning of the structure
// 2. Since the actual string data is placed between the source and target, the pointer needs moved
// 3. Move the pointer past the source string data and set current row
// 4. Now the targetDevice field will actually point to the right spot
// 5. Extract target device
// 6. Move the pointer as before (past the targetDevice string data) and set current row
// 7. Extract the remaining fields
// 8. Point data and currentRow to the next row
std::string source(
reinterpret_cast<const char*>(&(currentRow->sourceDevice)) + sizeof(union esif_data_variant),
currentRow->sourceDevice.string.length);
data += currentRow->sourceDevice.string.length;
currentRow = reinterpret_cast<struct EsifDataBinaryTrtPackage*>(data);
std::string target(
reinterpret_cast<const char*>(&(currentRow->targetDevice)) + sizeof(union esif_data_variant),
currentRow->targetDevice.string.length);
data += currentRow->targetDevice.string.length;
currentRow = reinterpret_cast<struct EsifDataBinaryTrtPackage*>(data);
ThermalRelationshipTableEntry temp(
normalizeAcpiScope(source),
normalizeAcpiScope(target),
static_cast<UInt32>(currentRow->thermalInfluence.integer.value),
static_cast<UInt32>(currentRow->thermalSamplingPeriod.integer.value));
controls.push_back(temp);
// Since we've already accounted for the strings, we now move the pointer by the size of the structure
// to get to the next row.
data += sizeof(struct EsifDataBinaryTrtPackage);
currentRow = reinterpret_cast<struct EsifDataBinaryTrtPackage*>(data);
}
return controls;
}
ThermalRelationshipTable ThermalRelationshipTable::createTrtFromDptfBuffer(const DptfBuffer& buffer)
{
std::vector<std::shared_ptr<RelationshipTableEntryBase>> entries;
UInt8* data = reinterpret_cast<UInt8*>(buffer.get());
struct EsifDataBinaryTrtPackage* currentRow = reinterpret_cast<struct EsifDataBinaryTrtPackage*>(data);
if (buffer.size() != 0)
{
UIntN rows = countTrtRows(buffer.size(), data);
// Reset currentRow to point to the beginning of the data block
data = reinterpret_cast<UInt8*>(buffer.get());
currentRow = reinterpret_cast<struct EsifDataBinaryTrtPackage*>(data);
for (UIntN i = 0; i < rows; i++)
{
// Since the TRT has 2 strings in it, the process for extracting them is:
// 1. Extract the source at the beginning of the structure
// 2. Since the actual string data is placed between the source and target, the pointer needs moved
// 3. Move the pointer past the source string data and set current row
// 4. Now the targetDevice field will actually point to the right spot
// 5. Extract target device
// 6. Move the pointer as before (past the targetDevice string data) and set current row
// 7. Extract the remaining fields
// 8. Point data and currentRow to the next row
std::string source(
reinterpret_cast<const char*>(&(currentRow->sourceDevice)) + sizeof(union esif_data_variant),
currentRow->sourceDevice.string.length);
data += currentRow->sourceDevice.string.length;
currentRow = reinterpret_cast<struct EsifDataBinaryTrtPackage*>(data);
std::string target(
reinterpret_cast<const char*>(&(currentRow->targetDevice)) + sizeof(union esif_data_variant),
currentRow->targetDevice.string.length);
data += currentRow->targetDevice.string.length;
currentRow = reinterpret_cast<struct EsifDataBinaryTrtPackage*>(data);
auto newTrtEntry = std::make_shared<ThermalRelationshipTableEntry>(
BinaryParse::normalizeAcpiScope(source),
BinaryParse::normalizeAcpiScope(target),
static_cast<UInt32>(currentRow->thermalInfluence.integer.value),
TimeSpan::createFromTenthSeconds(static_cast<UInt32>(currentRow->thermalSamplingPeriod.integer.value)));
if (newTrtEntry)
{
// Check for duplicate entries. Don't add entry if previous entry exists with same target/source pair
Bool isDuplicateEntry = false;
for (auto e = entries.begin(); e != entries.end(); e++)
{
auto trtEntry = std::dynamic_pointer_cast<ThermalRelationshipTableEntry>(*e);
if (trtEntry && newTrtEntry->isSameAs(*trtEntry))
{
isDuplicateEntry = true;
break;
}
}
if (isDuplicateEntry == false)
{
entries.push_back(newTrtEntry);
}
}
// Since we've already accounted for the strings, we now move the pointer by the size of the structure
// to get to the next row.
data += sizeof(struct EsifDataBinaryTrtPackage);
currentRow = reinterpret_cast<struct EsifDataBinaryTrtPackage*>(data);
}
}
return ThermalRelationshipTable(entries);
}