Previously, we would keep sampling the CPU frequency until two subsequent
samples differed by at most 1 MHz. This could take several seconds, and would
unnecessarily delay boot.
Instead, if sampling is too unreliable, just give up and calculate the average
frequency from 10 samples. This is no worse than picking the frequency that
just happened to be returned twice in a row.
The fact that this method of sampling fails could indicate that there's a
problem with our performance counter implementation or timer interrupt,
but that's a separate issue...
- Use a new work_available event to allow ProcessPlayingNotes to sleep when no
notes are to be played.
- Get rid of the pointless thread_termination_complete event, wait on the
thread handle instead.
- Don't leak thread_handle.
This avoids locking Cc for too long by trying to read-ahead data which
is already in cache.
We now will only schedule a read ahead if next read should bring us
to a new VACB (perhaps not in cache).
This notably fixes Inkscape setup which was slown down by read-ahead
due to continous 1 byte reads.
Thanks to Thomas for his help on this issue.
CORE-14395
- Volume, Power and Hotplug icon: Use timers to distinguish between single and double clicks.
- Volume icon: Show the tray volume dialog on a single click.
SendNotifyMessageW: It doesn't support messages with pointers so there is no need to call MsgiUMToKMMessage
SendMessageTimeoutW, SendMessageTimeoutA: These two do support marshaling pointers so they need to use MsgiUMToKMMessage.
This is actually a bug that happens only in the rare case where we send a WM_COPYDATA with a timeout.
- Set some last errors.
- Fix error code returned by ScLookupServiceByServiceName().
- Check the validity of the handler proc in RegisterServiceCtrlHandler(Ex)W().
- Improve some traces; comment some code.
The reserve IRP is an IRP which is allocated on system boot and kept during
the whole system life. Its purpose is to allow page reads in case of
low-memory situations where the system doesn't have enough memory left
to allocate an IRP to read from the page file (would be catastrophic situation).
services\database.c:
- Refactor ScmControlService() so that it can be used to send the dispatcher loop stop command.
- Separate the code to decrement the image run counter from the service image cleanup code.
services\rpcserver.c:
- RSetServiceStatus(): Stop the dispatcher loop when the image run counter is zero and remove the service image after that.
advapi32\service\sctrl.c:
- Do not terminate the service dispatcher loop when the last service is being stopped. Wait for an explicit dispatcher stop command (empty service name).
CORE-12413