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kernel_liteos_a/kernel/base/include/los_task_pri.h

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/*
* Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
* Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of
* conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
* of conditions and the following disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its contributors may be used
* to endorse or promote products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _LOS_TASK_PRI_H
#define _LOS_TASK_PRI_H
#include "los_task.h"
#include "los_percpu_pri.h"
#include "los_spinlock.h"
#ifdef LOSCFG_SCHED_DEBUG
#include "los_stat_pri.h"
#endif
#include "los_stackinfo_pri.h"
#include "los_futex_pri.h"
#include "los_signal.h"
#ifdef LOSCFG_KERNEL_CPUP
#include "los_cpup_pri.h"
#endif
#include "los_trace.h"
#ifdef __cplusplus
#if __cplusplus
extern "C" {
#endif /* __cplusplus */
#endif /* __cplusplus */
/**
* @ingroup los_task
* Define task siginal types.
*
* Task siginal types.
*/
#define SIGNAL_NONE 0U
#define SIGNAL_KILL (1U << 0)
#define SIGNAL_SUSPEND (1U << 1)
#define SIGNAL_AFFI (1U << 2)
/* scheduler lock */
extern SPIN_LOCK_S g_taskSpin;
#define SCHEDULER_LOCK(state) LOS_SpinLockSave(&g_taskSpin, &(state))
#define SCHEDULER_UNLOCK(state) LOS_SpinUnlockRestore(&g_taskSpin, state)
/* default and non-running task's ownership id */
#define OS_TASK_INVALID_CPUID 0xFFFF
/**
* @ingroup los_task
* Null task ID
*
*/
#define OS_TASK_ERRORID 0xFFFFFFFF
/**
* @ingroup los_task
* Define a usable task priority.
*
* Highest task priority.
*/
#define OS_TASK_PRIORITY_HIGHEST 0
/**
* @ingroup los_task
* Define a usable task priority.
*
* Lowest task priority.
*/
#define OS_TASK_PRIORITY_LOWEST 31
/**
* @ingroup los_task
* Flag that indicates the task or task control block status.
*
* The task is init.
*/
#define OS_TASK_STATUS_INIT 0x0001U
/**
* @ingroup los_task
* Flag that indicates the task or task control block status.
*
* The task is ready.
*/
#define OS_TASK_STATUS_READY 0x0002U
/**
* @ingroup los_task
* Flag that indicates the task or task control block status.
*
* The task is running.
*/
#define OS_TASK_STATUS_RUNNING 0x0004U
/**
* @ingroup los_task
* Flag that indicates the task or task control block status.
*
* The task is suspended.
*/
#define OS_TASK_STATUS_SUSPENDED 0x0008U
/**
* @ingroup los_task
* Flag that indicates the task or task control block status.
*
* The task is blocked.
*/
#define OS_TASK_STATUS_PENDING 0x0010U
/**
* @ingroup los_task
* Flag that indicates the task or task control block status.
*
* The task is delayed.
*/
#define OS_TASK_STATUS_DELAY 0x0020U
/**
* @ingroup los_task
* Flag that indicates the task or task control block status.
*
* The time for waiting for an event to occur expires.
*/
#define OS_TASK_STATUS_TIMEOUT 0x0040U
/**
* @ingroup los_task
* Flag that indicates the task or task control block status.
*
* The task is pend for a period of time.
*/
#define OS_TASK_STATUS_PEND_TIME 0x0080U
#define OS_TASK_STATUS_BLOCKED (OS_TASK_STATUS_INIT | OS_TASK_STATUS_PENDING | \
OS_TASK_STATUS_DELAY | OS_TASK_STATUS_PEND_TIME)
/**
* @ingroup los_task
* Flag that indicates the task or task control block status.
*
* The task is exit.
*/
#define OS_TASK_STATUS_EXIT 0x0100U
/**
* @ingroup los_task
* Flag that indicates the task or task control block status.
*
* The task control block is unused.
*/
#define OS_TASK_STATUS_UNUSED 0x0200U
/**
* @ingroup los_task
* Flag that indicates the task or task control block status.
*
* The task is joinable.
*/
#define OS_TASK_FLAG_PTHREAD_JOIN 0x0400U
/**
* @ingroup los_task
* Flag that indicates the task or task control block status.
*
* The task is status detached.
*/
#define OS_TASK_FLAG_DETACHED 0x0800U
/**
* @ingroup los_task
* Flag that indicates the task property.
*
* The task is system-level task, like idle, swtmr and etc.
*/
#define OS_TASK_FLAG_SYSTEM_TASK 0x1000U
/**
* @ingroup los_task
* Flag that indicates the task property.
*
* The task is no-delete system task, like resourceTask.
*/
#define OS_TASK_FLAG_NO_DELETE 0x2000U
/**
* @ingroup los_task
* Flag that indicates the task property.
*
* Specifies the process creation task.
*/
#define OS_TASK_FLAG_SPECIFIES_PROCESS 0x4000U
/**
* @ingroup los_task
* Boundary on which the stack size is aligned.
*
*/
#define OS_TASK_STACK_SIZE_ALIGN 16U
/**
* @ingroup los_task
* Boundary on which the stack address is aligned.
*
*/
#define OS_TASK_STACK_ADDR_ALIGN 8U
/**
* @ingroup los_task
* Number of usable task priorities.
*/
#define OS_TSK_PRINUM (OS_TASK_PRIORITY_LOWEST - OS_TASK_PRIORITY_HIGHEST + 1)
/**
* @ingroup los_task
* @brief Check whether a task ID is valid.
*
* @par Description:
* This API is used to check whether a task ID, excluding the idle task ID, is valid.
* @attention None.
*
* @param taskID [IN] Task ID.
*
* @retval 0 or 1. One indicates that the task ID is invalid, whereas zero indicates that the task ID is valid.
* @par Dependency:
* <ul><li>los_task_pri.h: the header file that contains the API declaration.</li></ul>
* @see
*/
#define OS_TSK_GET_INDEX(taskID) (taskID)
/**
* @ingroup los_task
* @brief Obtain the pointer to a task control block.
*
* @par Description:
* This API is used to obtain the pointer to a task control block using a corresponding parameter.
* @attention None.
*
* @param ptr [IN] Parameter used for obtaining the task control block.
*
* @retval Pointer to the task control block.
* @par Dependency:
* <ul><li>los_task_pri.h: the header file that contains the API declaration.</li></ul>
* @see
*/
#define OS_TCB_FROM_PENDLIST(ptr) LOS_DL_LIST_ENTRY(ptr, LosTaskCB, pendList)
/**
* @ingroup los_task
* @brief Obtain the pointer to a task control block.
*
* @par Description:
* This API is used to obtain the pointer to a task control block that has a specified task ID.
* @attention None.
*
* @param TaskID [IN] Task ID.
*
* @retval Pointer to the task control block.
* @par Dependency:
* <ul><li>los_task_pri.h: the header file that contains the API declaration.</li></ul>
* @see
*/
#define OS_TCB_FROM_TID(taskID) (((LosTaskCB *)g_taskCBArray) + (taskID))
#ifndef LOSCFG_STACK_POINT_ALIGN_SIZE
#define LOSCFG_STACK_POINT_ALIGN_SIZE (sizeof(UINTPTR) * 2)
#endif
#define OS_TASK_RESOURCE_STATCI_SIZE 0x1000
#define OS_TASK_RESOURCE_FREE_PRIORITY 5
#define OS_RESOURCE_EVENT_MASK 0xFF
#define OS_RESOURCE_EVENT_OOM 0x02
#define OS_RESOURCE_EVENT_FREE 0x04
#define OS_TCB_NAME_LEN 32
typedef struct {
VOID *stackPointer; /**< Task stack pointer */
UINT16 taskStatus; /**< Task status */
/* The scheduling */
UINT16 priority; /**< Task priority */
UINT16 policy;
UINT64 startTime; /**< The start time of each phase of task */
UINT64 irqStartTime; /**< Interrupt start time */
UINT32 irqUsedTime; /**< Interrupt consumption time */
UINT32 initTimeSlice; /**< Task init time slice */
INT32 timeSlice; /**< Task remaining time slice */
UINT32 waitTimes; /**< Task delay time, tick number */
SortLinkList sortList; /**< Task sortlink node */
UINT32 stackSize; /**< Task stack size */
UINTPTR topOfStack; /**< Task stack top */
UINT32 taskID; /**< Task ID */
TSK_ENTRY_FUNC taskEntry; /**< Task entrance function */
VOID *joinRetval; /**< pthread adaption */
VOID *taskMux; /**< Task-held mutex */
VOID *taskEvent; /**< Task-held event */
UINTPTR args[4]; /**< Parameter, of which the maximum number is 4 */
CHAR taskName[OS_TCB_NAME_LEN]; /**< Task name */
LOS_DL_LIST pendList; /**< Task pend node */
LOS_DL_LIST threadList; /**< thread list */
UINT32 eventMask; /**< Event mask */
UINT32 eventMode; /**< Event mode */
UINT32 priBitMap; /**< BitMap for recording the change of task priority,
the priority can not be greater than 31 */
#ifdef LOSCFG_KERNEL_CPUP
OsCpupBase taskCpup; /**< task cpu usage */
#endif
INT32 errorNo; /**< Error Num */
UINT32 signal; /**< Task signal */
sig_cb sig;
#if (LOSCFG_KERNEL_SMP == YES)
UINT16 currCpu; /**< CPU core number of this task is running on */
UINT16 lastCpu; /**< CPU core number of this task is running on last time */
UINT16 cpuAffiMask; /**< CPU affinity mask, support up to 16 cores */
#if (LOSCFG_KERNEL_SMP_TASK_SYNC == YES)
UINT32 syncSignal; /**< Synchronization for signal handling */
#endif
#if (LOSCFG_KERNEL_SMP_LOCKDEP == YES)
LockDep lockDep;
#endif
#endif
#ifdef LOSCFG_SCHED_DEBUG
SchedStat schedStat; /**< Schedule statistics */
#endif
UINTPTR userArea;
UINTPTR userMapBase;
UINT32 userMapSize; /**< user thread stack size ,real size : userMapSize + USER_STACK_MIN_SIZE */
UINT32 processID; /**< Which belong process */
FutexNode futex;
LOS_DL_LIST joinList; /**< join list */
LOS_DL_LIST lockList; /**< Hold the lock list */
UINTPTR waitID; /**< Wait for the PID or GID of the child process */
UINT16 waitFlag; /**< The type of child process that is waiting, belonging to a group or parent,
a specific child process, or any child process */
#if (LOSCFG_KERNEL_LITEIPC == YES)
UINT32 ipcStatus;
LOS_DL_LIST msgListHead;
BOOL accessMap[LOSCFG_BASE_CORE_TSK_LIMIT];
#endif
} LosTaskCB;
typedef struct {
LosTaskCB *runTask;
LosTaskCB *newTask;
} LosTask;
struct ProcessSignalInfo {
siginfo_t *sigInfo; /**< Signal to be dispatched */
LosTaskCB *defaultTcb; /**< Default TCB */
LosTaskCB *unblockedTcb; /**< The signal unblock on this TCB*/
LosTaskCB *awakenedTcb; /**< This TCB was awakened */
LosTaskCB *receivedTcb; /**< This TCB received the signal */
};
typedef int (*ForEachTaskCB)(LosTaskCB *tcb, void *arg);
/**
* @ingroup los_task
* Maximum number of tasks.
*
*/
extern UINT32 g_taskMaxNum;
/**
* @ingroup los_task
* Starting address of a task.
*
*/
extern LosTaskCB *g_taskCBArray;
/**
* @ingroup los_task
* Time slice structure.
*/
typedef struct {
LosTaskCB *task; /**< Current running task */
UINT16 time; /**< Expiration time point */
UINT16 timeout; /**< Expiration duration */
} OsTaskRobin;
STATIC INLINE LosTaskCB *OsCurrTaskGet(VOID)
{
return (LosTaskCB *)ArchCurrTaskGet();
}
STATIC INLINE VOID OsCurrTaskSet(LosTaskCB *task)
{
ArchCurrTaskSet(task);
}
STATIC INLINE VOID OsCurrUserTaskSet(UINTPTR thread)
{
ArchCurrUserTaskSet(thread);
}
STATIC INLINE LosTaskCB *OsGetTaskCB(UINT32 taskID)
{
return OS_TCB_FROM_TID(taskID);
}
STATIC INLINE BOOL OsTaskIsUnused(const LosTaskCB *taskCB)
{
if (taskCB->taskStatus & OS_TASK_STATUS_UNUSED) {
return TRUE;
}
return FALSE;
}
STATIC INLINE BOOL OsTaskIsRunning(const LosTaskCB *taskCB)
{
if (taskCB->taskStatus & OS_TASK_STATUS_RUNNING) {
return TRUE;
}
return FALSE;
}
STATIC INLINE BOOL OsTaskIsInactive(const LosTaskCB *taskCB)
{
if (taskCB->taskStatus & (OS_TASK_STATUS_UNUSED | OS_TASK_STATUS_INIT | OS_TASK_STATUS_EXIT)) {
return TRUE;
}
return FALSE;
}
#define OS_TID_CHECK_INVALID(taskID) ((UINT32)(taskID) >= g_taskMaxNum)
/* get task info */
#define OS_ALL_TASK_MASK 0xFFFFFFFF
extern UINT32 OsTaskSetDeatchUnsafe(LosTaskCB *taskCB);
extern VOID OsTaskJoinPostUnsafe(LosTaskCB *taskCB);
extern UINT32 OsTaskJoinPendUnsafe(LosTaskCB *taskCB);
extern BOOL OsTaskCpuAffiSetUnsafe(UINT32 taskID, UINT16 newCpuAffiMask, UINT16 *oldCpuAffiMask);
extern VOID OsTaskSchedule(LosTaskCB *, LosTaskCB *);
extern VOID OsTaskContextLoad(LosTaskCB *newTask);
extern VOID OsIdleTask(VOID);
extern UINT32 OsIdleTaskCreate(VOID);
extern UINT32 OsTaskInit(VOID);
extern UINT32 OsShellCmdDumpTask(INT32 argc, const CHAR **argv);
extern UINT32 OsShellCmdTskInfoGet(UINT32 taskID, VOID *seqfile, UINT16 flag);
extern LosTaskCB *OsGetMainTask(VOID);
extern VOID OsSetMainTask(VOID);
extern UINT32 OsGetIdleTaskId(VOID);
extern VOID OsTaskEntry(UINT32 taskID);
extern SortLinkAttribute *OsTaskSortLinkGet(VOID);
extern VOID OsTaskProcSignal(VOID);
extern UINT32 OsTaskDeleteUnsafe(LosTaskCB *taskCB, UINT32 status, UINT32 intSave);
extern VOID OsTaskResourcesToFree(LosTaskCB *taskCB);
extern VOID OsRunTaskToDelete(LosTaskCB *taskCB);
extern UINT32 OsTaskSyncWait(const LosTaskCB *taskCB);
extern UINT32 OsCreateUserTask(UINT32 processID, TSK_INIT_PARAM_S *initParam);
extern INT32 OsSetTaskName(LosTaskCB *taskCB, const CHAR *name, BOOL setPName);
extern VOID OsTaskCBRecyleToFree(VOID);
extern VOID OsTaskExitGroup(UINT32 status);
extern VOID OsTaskToExit(LosTaskCB *taskCB, UINT32 status);
extern VOID OsExecDestroyTaskGroup(VOID);
extern VOID OsProcessSuspendAllTask(VOID);
extern UINT32 OsUserTaskOperatePermissionsCheck(LosTaskCB *taskCB);
extern VOID OsWriteResourceEvent(UINT32 events);
extern UINT32 OsCreateResourceFreeTask(VOID);
#define OS_TASK_WAIT_ANYPROCESS (1 << 0U)
#define OS_TASK_WAIT_PROCESS (1 << 1U)
#define OS_TASK_WAIT_GID (1 << 2U)
#ifdef LOSCFG_DEBUG_VERSION
#define OS_TASK_WAIT_SEM (OS_TASK_WAIT_GID + 1)
#define OS_TASK_WAIT_QUEUE (OS_TASK_WAIT_SEM + 1)
#define OS_TASK_WAIT_JOIN (OS_TASK_WAIT_QUEUE + 1)
#define OS_TASK_WAIT_SIGNAL (OS_TASK_WAIT_JOIN + 1)
#define OS_TASK_WAIT_LITEIPC (OS_TASK_WAIT_SIGNAL + 1)
#define OS_TASK_WAIT_MUTEX (OS_TASK_WAIT_LITEIPC + 1)
#define OS_TASK_WAIT_FUTEX (OS_TASK_WAIT_MUTEX + 1)
#define OS_TASK_WAIT_EVENT (OS_TASK_WAIT_FUTEX + 1)
#define OS_TASK_WAIT_COMPLETE (OS_TASK_WAIT_EVENT + 1)
STATIC INLINE VOID OsTaskWaitSetPendMask(UINT16 mask, UINTPTR lockID, UINT32 timeout)
{
LosTaskCB *runTask = OsCurrTaskGet();
runTask->waitID = lockID;
runTask->waitFlag = mask;
(VOID)timeout;
#ifdef LOSCFG_KERNEL_TRACE
UINT16 status = OS_TASK_STATUS_PENDING;
if (timeout != LOS_WAIT_FOREVER) {
status |= OS_TASK_STATUS_PEND_TIME;
}
LOS_Trace(LOS_TRACE_TASK, runTask->taskEntry, status, mask, lockID);
#endif
}
STATIC INLINE VOID OsTaskWakeClearPendMask(LosTaskCB *resumeTask)
{
resumeTask->waitID = 0;
resumeTask->waitFlag = 0;
#ifdef LOSCFG_KERNEL_TRACE
LosTaskCB *runTask = OsCurrTaskGet();
LOS_Trace(LOS_TRACE_TASK, resumeTask->taskEntry, (UINT16)OS_TASK_STATUS_READY,
runTask->taskStatus, runTask->taskEntry);
#endif
}
STATIC INLINE VOID OsTraceTaskSchedule(LosTaskCB *newTask, LosTaskCB *runTask)
{
(VOID)newTask;
(VOID)runTask;
#ifdef LOSCFG_KERNEL_TRACE
LOS_Trace(LOS_TRACE_TASK, newTask->taskEntry, (UINT16)OS_TASK_STATUS_RUNNING,
runTask->taskStatus, runTask->taskEntry);
#endif
}
#else
#define OsTaskWaitSetPendMask(mask, lockID, timeout)
#define OsTaskWakeClearPendMask(taskCB)
#define OsTraceTaskSchedule(newTask, runTask)
#endif
#ifdef __cplusplus
#if __cplusplus
}
#endif /* __cplusplus */
#endif /* __cplusplus */
#endif /* _LOS_TASK_PRI_H */
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