int LWP_InitializeProcessSupport(int priority, PROCESS *pid)
{
PROCESS pcb;
register int i;
char* value;
Debug(0, ("Entered LWP_InitializeProcessSupport"))
if (lwp_init != NULL) return LWP_SUCCESS;
if (priority >= MAX_PRIORITIES) return LWP_EBADPRI;
pcb = (PROCESS)malloc(sizeof(*pcb));
if (pcb == NULL)
Abort_LWP("Insufficient Storage to Initialize LWP PCB");
(void) memset((void*)pcb, 0, sizeof(*pcb));
pcb->fiber = ConvertThreadToFiber(pcb);
if (pcb == NULL)
Abort_LWP("Cannot convert main thread to LWP fiber");
lwp_init = (struct lwp_ctl *) malloc(sizeof(struct lwp_ctl));
if (lwp_init == NULL)
Abort_LWP("Insufficient Storage to Initialize LWP CTL");
(void) memset((void*)lwp_init, 0, sizeof(struct lwp_ctl));
for (i=0; i<MAX_PRIORITIES; i++) {
runnable[i].head = NULL;
runnable[i].count = 0;
}
blocked.head = NULL;
blocked.count = 0;
LWPANCHOR.processcnt = 1;
LWPANCHOR.outerpid = pcb;
LWPANCHOR.outersp = NULL;
Initialize_PCB(pcb, priority, 0, NULL, NULL,
"Main Process [created by LWP]");
lwp_cpptr = pcb;
Debug(10, ("Init: Insert 0x%p into runnable at priority %d\n", pcb, priority))
insert(pcb, &runnable[priority]);
if ( ( value = getenv("AFS_LWP_STACK_SIZE")) == NULL )
lwp_MinStackSize = AFS_LWP_MINSTACKSIZE;
else
lwp_MinStackSize = (AFS_LWP_MINSTACKSIZE>atoi(value)?
AFS_LWP_MINSTACKSIZE : atoi(value));
*pid = pcb;
return LWP_SUCCESS;
}
int LWP_TerminateProcessSupport(void) /* terminate all LWP support */
{
int i;
lwpdebug(0, "Entered Terminate_Process_Support");
if (!lwp_init)
return LWP_EINIT;
if (lwp_cpptr != LWPANCHOR.outerpid)
/* terminate support not called from same process as the init process */
Abort_LWP("Terminate_Process_Support invoked from wrong process!");
/* free all space allocated */
for (i=0; i<MAX_PRIORITIES; i++)
for_all_elts(cur, runnable[i], { Free_PCB(cur);})