// Done with message, delete it or mark it unused
void OsMsg::releaseMsg()
{
if (isMsgReusable()) {
setInUse(FALSE);
} else {
delete this;
}
}
ProfileObjectView &ProfileObject :: view ( )
{
if ( !objView )
{
objView = this -> newView();
setInUse( true );
}
return *objView;
}
// add a next setpoint for the stepper to go to, will wait if queue is full
void setpointAdd (const Setpoint& s) {
// TODO: silly approach, should use first/last indices into circular buffer
for (int i = 0; i <= SETPOINT_QUEUE_SIZE; ++i)
if (!isInUse(i)) {
setInUse(i);
setpoint.setpoints[i] = s;
chMBPost(&setpoint.mailbox, i, TIME_INFINITE);
return;
}
// never reached
}
void DIVMDKBlockStorage::close()
{
// Unmark in use
setInUse(false);
backingStore = NULL;
blockNum = 0;
cylinders = 0;
heads = 0;
sectors = 0;
grainSize = 0;
grainTableSize = 0;
directory1Block = 0;
directory2Block = 0;
redundantDirectory = false;
allocatedBlockNum = 0;
metadata.clear();
}
ProfileObject &ProfileObject :: viewClosed ( )
{
this->objView = 0;
setInUse( false );
return *this;
}
bool DIVMDKBlockStorage::open(DIBackingStore *backingStore)
{
close();
DIChar header[VMDK_HEADERSIZE];
if (!backingStore->read(0, header, VMDK_HEADERSIZE))
return false;
// Check VMDK id
if (getDIIntLE(&header[0x0]) != 0x564d444b)
return false;
// Check VMDK version
DIInt version = getDIIntLE(&header[0x4]);
if ((version != 1) && (version != 2))
return false;
// Get VMDK flags
DIInt flags = getDIIntLE(&header[0x8]);
redundantDirectory = (flags & (1 << 1));
// Get VMDK capacity
blockNum = (DIInt) getDILongLE(&header[0xc]);
// Get VMDK grain info
grainSize = (DIInt) getDILongLE(&header[0x14]);
grainTableSize = getDIIntLE(&header[0x2c]);
directory1Block = (DIInt) getDILongLE(&header[0x38]);
directory2Block = (DIInt) getDILongLE(&header[0x30]);
DIInt dataBlock = (DIInt) getDILongLE(&header[0x40]);
// Get descriptor
DILong descriptorOffset = getDILongLE(&header[0x1c]);
DILong descriptorSize = getDILongLE(&header[0x24]);
if (!parseDescriptor(backingStore, descriptorOffset, (DIInt) descriptorSize))
return false;
// Do not accept compression
if ((flags & (1 << 16)) && (getDIShortLE(&header[0x4d]) != 0))
return false;
// Verify clean shutdown
if (header[0x48])
return false;
// Read metadata
DIData data;
data.resize(dataBlock * DI_BLOCKSIZE);
if (!backingStore->read(0, &data.front(), (DIInt) data.size()))
return false;
metadata.resize(data.size() / sizeof(DIInt));
for (DIInt i = 0; i < metadata.size(); i++)
metadata[i] = getDIIntLE(&data[i * sizeof(DIInt)]);
directoryEntrySize = grainTableSize * grainSize;
// Mark in use
setInUse(true);
this->backingStore = backingStore;
return true;
}
