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Diffstat (limited to 'cpukit/score/include/rtems/score/schedulernode.h')
| -rw-r--r-- | cpukit/score/include/rtems/score/schedulernode.h | 217 |
1 files changed, 0 insertions, 217 deletions
diff --git a/cpukit/score/include/rtems/score/schedulernode.h b/cpukit/score/include/rtems/score/schedulernode.h deleted file mode 100644 index d62e983853..0000000000 --- a/cpukit/score/include/rtems/score/schedulernode.h +++ /dev/null @@ -1,217 +0,0 @@ -/* - * Copyright (c) 2014, 2016 embedded brains GmbH. All rights reserved. - * - * embedded brains GmbH - * Dornierstr. 4 - * 82178 Puchheim - * Germany - * <rtems@embedded-brains.de> - * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. - */ - -#ifndef _RTEMS_SCORE_SCHEDULERNODE_H -#define _RTEMS_SCORE_SCHEDULERNODE_H - -#include <rtems/score/basedefs.h> -#include <rtems/score/chain.h> -#include <rtems/score/priority.h> -#include <rtems/score/smplockseq.h> - -struct _Thread_Control; - -#ifdef __cplusplus -extern "C" { -#endif /* __cplusplus */ - -#if defined(RTEMS_SMP) -/** - * @brief The scheduler node requests. - */ -typedef enum { - /** - * @brief The scheduler node is not on the list of pending requests. - */ - SCHEDULER_NODE_REQUEST_NOT_PENDING, - - /** - * @brief There is a pending scheduler node request to add this scheduler - * node to the Thread_Control::Scheduler::Scheduler_nodes chain. - */ - SCHEDULER_NODE_REQUEST_ADD, - - /** - * @brief There is a pending scheduler node request to remove this scheduler - * node from the Thread_Control::Scheduler::Scheduler_nodes chain. - */ - SCHEDULER_NODE_REQUEST_REMOVE, - - /** - * @brief The scheduler node is on the list of pending requests, but nothing - * should change. - */ - SCHEDULER_NODE_REQUEST_NOTHING, - -} Scheduler_Node_request; -#endif - -typedef struct Scheduler_Node Scheduler_Node; - -/** - * @brief Scheduler node for per-thread data. - */ -struct Scheduler_Node { -#if defined(RTEMS_SMP) - /** - * @brief Chain node for usage in various scheduler data structures. - * - * Strictly, this is the wrong place for this field since the data structures - * to manage scheduler nodes belong to the particular scheduler - * implementation. Currently, all SMP scheduler implementations use chains - * or red-black trees. The node is here to simplify things, just like the - * object node in the thread control block. - */ - union { - Chain_Node Chain; - RBTree_Node RBTree; - } Node; - - /** - * @brief The sticky level determines if this scheduler node should use an - * idle thread in case this node is scheduled and the owner thread is - * blocked. - */ - int sticky_level; - - /** - * @brief The thread using this node. - * - * This is either the owner or an idle thread. - */ - struct _Thread_Control *user; - - /** - * @brief The idle thread claimed by this node in case the sticky level is - * greater than zero and the thread is block or is scheduled on another - * scheduler instance. - * - * This is necessary to ensure the priority ceiling protocols work across - * scheduler boundaries. - */ - struct _Thread_Control *idle; -#endif - - /** - * @brief The thread owning this node. - */ - struct _Thread_Control *owner; - -#if defined(RTEMS_SMP) - /** - * @brief Block to register and manage this scheduler node in the thread - * control block of the owner of this scheduler node. - */ - struct { - /** - * @brief Node to add this scheduler node to - * Thread_Control::Scheduler::Wait_nodes. - */ - Chain_Node Wait_node; - - /** - * @brief Node to add this scheduler node to - * Thread_Control::Scheduler::Scheduler_nodes or a temporary remove list. - */ - union { - /** - * @brief The node for Thread_Control::Scheduler::Scheduler_nodes. - */ - Chain_Node Chain; - - /** - * @brief The next pointer for a temporary remove list. - * - * @see _Thread_Scheduler_process_requests(). - */ - Scheduler_Node *next; - } Scheduler_node; - - /** - * @brief Link to the next scheduler node in the - * Thread_Control::Scheduler::requests list. - */ - Scheduler_Node *next_request; - - /** - * @brief The current scheduler node request. - */ - Scheduler_Node_request request; - } Thread; -#endif - - /** - * @brief Thread wait support block. - */ - struct { - Priority_Aggregation Priority; - } Wait; - - /** - * @brief The thread priority information used by the scheduler. - * - * The thread priority is manifest in two independent areas. One area is the - * user visible thread priority along with a potential thread queue. The - * other is the scheduler. During a thread priority change, the user visible - * thread priority and the thread queue are first updated and the thread - * priority value here is changed. Once this is done the scheduler is - * notified via the update priority operation, so that it can update its - * internal state and honour a new thread priority value. - */ - struct { - /** - * @brief The thread priority value of this scheduler node. - * - * The producer of this value is _Thread_Change_priority(). The consumer - * is the scheduler via the unblock and update priority operations. - * - * This priority control consists of two parts. One part is the plain - * priority value (most-significant 63 bits). The other part is the - * least-significant bit which indicates if the thread should be appended - * (bit set) or prepended (bit cleared) to its priority group, see - * SCHEDULER_PRIORITY_APPEND(). - */ - Priority_Control value; - -#if defined(RTEMS_SMP) - /** - * @brief Sequence lock to synchronize priority value updates. - */ - SMP_sequence_lock_Control Lock; -#endif - } Priority; -}; - -#if defined(RTEMS_SMP) -/** - * @brief The size of a scheduler node. - * - * This value is provided via <rtems/confdefs.h>. - */ -extern const size_t _Scheduler_Node_size; -#endif - -#if defined(RTEMS_SMP) -#define SCHEDULER_NODE_OF_THREAD_WAIT_NODE( node ) \ - RTEMS_CONTAINER_OF( node, Scheduler_Node, Thread.Wait_node ) - -#define SCHEDULER_NODE_OF_THREAD_SCHEDULER_NODE( node ) \ - RTEMS_CONTAINER_OF( node, Scheduler_Node, Thread.Scheduler_node.Chain ) -#endif - -#ifdef __cplusplus -} -#endif /* __cplusplus */ - -#endif /* _RTEMS_SCORE_SCHEDULERNODE_H */ |