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Full Discussion: Unix linked-list placement
Top Forums UNIX for Advanced & Expert Users Unix linked-list placement Post 302671867 by louisTan on Saturday 14th of July 2012 09:25:52 PM
Old 07-14-2012
Java Unix linked-list placement

Hi, I am programming in kernel, and I want to use a double linked list that holds infos that every process could access and modify THIS list. So, I suppose it is a 'global' variable since every process(thread) can reach it, I am wondering where to put it? by changing some of the kernel files?
 

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assert_wait_mesg(9r)													      assert_wait_mesg(9r)

NAME
assert_wait_mesg - General: Asserts that the current kernel thread is about to block (sleep) SYNOPSIS
void assert_wait_mesg( vm_offset_t event, boolean_t interruptible, char *message ); ARGUMENTS
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 ker- nel thread. Specifies a mnemonic for the type of wait. The ps command uses this mnemonic to print out more meaningful messages about a process. DESCRIPTION
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 ker- nel 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. CAUTIONS
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. RETURN VALUES
None SEE ALSO
Data Structures: thread(9s) Routines: clear_wait(9r), current_thread(9r), thread_block(9r) Reference Pages Section 1: ps assert_wait_mesg(9r)
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