assert_wait_mesg - General: Asserts that the current kernel
thread is about to block (sleep)
char *message );
Specifies the event associated with the current kernel
thread. Specifies a Boolean value that indicates how the
kernel thread is awakened. You can pass one of the following
values: The current kernel thread is interruptible.
This value means that a signal can awaken the current kernel
thread. The current kernel thread is not interruptible.
This value means that only the specified event can
awaken the current kernel thread. Specifies a mnemonic
for the type of wait. The ps command uses this mnemonic to
print out more meaningful messages about a process.
The assert_wait_mesgroutine asserts that the current kernel
thread is about to block (sleep) until the specified
event occurs. This routine sets a thread wait bit in the
pointer to the thread structure associated with the current
kernel thread. This bit signifies that this kernel
thread is on the appropriate wait hash queue, waiting for
a wakeup call.
To actually block (put to sleep) the current kernel
thread, call thread_block.
To issue a wakeup call on the specified event, call the
thread_wakeup_prim or clear_wait routine.
You must not call assert_wait_mesg from a device driver's
interrupt handler. The reason for this is that at interrupt
context there is no process to be put to sleep.
Data Structures: thread(9s)
Routines: clear_wait(9r), current_thread(9r),
Reference Pages Section 1: ps
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