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include vmm.inc
 
VMMcall Get_Crit_Status_No_Block
 
mov     [VM], ebx           ; VM handle of owner
mov     [Claims], ecx       ; # of times critical section claimed
jc      high_priority       ; priority is Critical_Section_Boost or higher
 
(Version 3.1 only)
 
The Get_Crit_Status_No_Block service returns the claim count and handle of
the owner of the critical section. Unlike the Get_Crit_Section_Status
service, this service returns immediately (without blocking) even if a
delayed request to release the critical section is pending.
 
This service has no parameters.
 
Return Value
 
The ECX register contains the critical section claim count, and the EBX
register contains the handle identifying the virtual machine owning the
critical section. If the ECX register is 0, the EBX register contains the
handle of the current virtual machine.
 
The carry flag is set if the current virtual machine has an execution
priority greater than or equal to Critical_Section_Boost, such as during a
hardware interrupt simulation.
 
Comments
 
In some cases, this service may indicate that the critical section is
currently owned even when it will be released before returning to the
virtual machine.
 
This is an asynchronous service; it may be called at interrupt time.
 
Uses
 
Flags
 
See Also
 
End_Critical_Section, Get_Crit_Section_Status
 
 
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