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[/] [openrisc/] [trunk/] [rtos/] [rtems/] [c/] [src/] [exec/] [score/] [src/] [thread.c] - Rev 227
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/* * Thread Handler * * * COPYRIGHT (c) 1989-1999. * On-Line Applications Research Corporation (OAR). * * The license and distribution terms for this file may be * found in found in the file LICENSE in this distribution or at * http://www.OARcorp.com/rtems/license.html. * * $Id: thread.c,v 1.2 2001-09-27 11:59:34 chris Exp $ */ #include <rtems/system.h> #include <rtems/score/apiext.h> #include <rtems/score/context.h> #include <rtems/score/interr.h> #include <rtems/score/isr.h> #include <rtems/score/object.h> #include <rtems/score/priority.h> #include <rtems/score/states.h> #include <rtems/score/sysstate.h> #include <rtems/score/thread.h> #include <rtems/score/threadq.h> #include <rtems/score/userext.h> #include <rtems/score/wkspace.h> /*PAGE * * _Thread_Handler_initialization * * This routine initializes all thread manager related data structures. * * Input parameters: * ticks_per_timeslice - clock ticks per quantum * maximum_proxies - number of proxies to initialize * * Output parameters: NONE */ void _Thread_Handler_initialization( unsigned32 ticks_per_timeslice, unsigned32 maximum_extensions, unsigned32 maximum_proxies ) { unsigned32 index; /* * BOTH stacks hooks must be set or both must be NULL. * Do not allow mixture. */ if ( !( ( _CPU_Table.stack_allocate_hook == 0 ) == ( _CPU_Table.stack_free_hook == 0 ) ) ) _Internal_error_Occurred( INTERNAL_ERROR_CORE, TRUE, INTERNAL_ERROR_BAD_STACK_HOOK ); _Context_Switch_necessary = FALSE; _Thread_Executing = NULL; _Thread_Heir = NULL; _Thread_Allocated_fp = NULL; _Thread_Do_post_task_switch_extension = 0; _Thread_Maximum_extensions = maximum_extensions; _Thread_Ticks_per_timeslice = ticks_per_timeslice; _Thread_Ready_chain = (Chain_Control *) _Workspace_Allocate_or_fatal_error( (PRIORITY_MAXIMUM + 1) * sizeof(Chain_Control) ); for ( index=0; index <= PRIORITY_MAXIMUM ; index++ ) _Chain_Initialize_empty( &_Thread_Ready_chain[ index ] ); #if defined(RTEMS_MULTIPROCESSING) _Thread_MP_Handler_initialization( maximum_proxies ); #endif /* * Initialize this class of objects. */ _Objects_Initialize_information( &_Thread_Internal_information, OBJECTS_INTERNAL_THREADS, FALSE, ( _System_state_Is_multiprocessing ) ? 2 : 1, sizeof( Thread_Control ), TRUE, 8, TRUE ); }
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