ThreadSwitchCallback

mov     eax, OldThreadHandle
mov     edi, CurThreadHandle
call    [ThreadSwitchCallback]

Performs programmer-defined processing whenever the system switches to a different thread. ThreadSwitchCallback is a programmer-defined callback function installed by the Call_When_Thread_Switched service. Uses Flags.

• No return value.

OldThreadHandle

Handle of the previous thread.

CurThreadHandle

Handle of the current thread.

The callback function can carry out any operation and can modify the EAX, EBX, ECX, EDX, ESI, EDI, and Flags registers.

See also Call_When_Thread_Switched