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OS_MUTEX.lst
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嵌入式/单片机编程
开发平台：
Visual C++
- C51 COMPILER V8.02 OS_MUTEX 06/22/2006 11:44:38 PAGE 1
- C51 COMPILER V8.02, COMPILATION OF MODULE OS_MUTEX
- OBJECT MODULE PLACED IN .objOS_MUTEX.obj
- COMPILER INVOKED BY: C:KeilC51BINC51.EXE uCosiiOS_MUTEX.C LARGE BROWSE DEBUG OBJECTEXTEND PRINT(.lstOS_MUTEX.lst)
- - OBJECT(.objOS_MUTEX.obj)
- line level source
- 1 /*
- 2 *********************************************************************************************************
- 3 * uC/OS-II
- 4 * The Real-Time Kernel
- 5 * MUTUAL EXCLUSION SEMAPHORE MANAGEMENT
- 6 *
- 7 * (c) Copyright 1992-2001, Jean J. Labrosse, Weston, FL
- 8 * All Rights Reserved
- 9 *
- 10 * File : OS_MUTEX.C
- 11 * By : Jean J. Labrosse
- 12 *********************************************************************************************************
- 13 */
- 14
- 15 #ifndef OS_MASTER_FILE
- 16 #include "sourceincludes.h"
- 17 #endif
- 18
- 19 /*
- 20 *********************************************************************************************************
- 21 * LOCAL CONSTANTS
- 22 *********************************************************************************************************
- 23 */
- 24
- 25 #define OS_MUTEX_KEEP_LOWER_8 0x00FF
- 26 #define OS_MUTEX_KEEP_UPPER_8 0xFF00
- 27
- 28 #define OS_MUTEX_AVAILABLE 0x00FF
- 29
- 30
- 31 #if OS_MUTEX_EN > 0
- /*
- *********************************************************************************************************
- * ACCEPT MUTUAL EXCLUSION SEMAPHORE
- *
- * Description: This function checks the mutual exclusion semaphore to see if a resource is available.
- * Unlike OSMutexPend(), OSMutexAccept() does not suspend the calling task if the resource is
- * not available or the event did not occur.
- *
- * Arguments : pevent is a pointer to the event control block
- *
- * err is a pointer to an error code which will be returned to your application:
- * OS_NO_ERR if the call was successful.
- * OS_ERR_EVENT_TYPE if 'pevent' is not a pointer to a mutex
- * OS_ERR_PEVENT_NULL 'pevent' is a NULL pointer
- * OS_ERR_PEND_ISR if you called this function from an ISR
- *
- * Returns : == 1 if the resource is available, the mutual exclusion semaphore is acquired
- * == 0 a) if the resource is not available
- * b) you didn't pass a pointer to a mutual exclusion semaphore
- * c) you called this function from an ISR
- *
- * Warning(s) : This function CANNOT be called from an ISR because mutual exclusion semaphores are
- * intended to be used by tasks only.
- C51 COMPILER V8.02 OS_MUTEX 06/22/2006 11:44:38 PAGE 2
- *********************************************************************************************************
- */
- #if OS_MUTEX_ACCEPT_EN > 0
- INT8U OSMutexAccept (OS_EVENT *pevent, INT8U *err) reentrant
- {
- #if OS_CRITICAL_METHOD == 3 /* Allocate storage for CPU status register */
- OS_CPU_SR cpu_sr;
- #endif
- if (OSIntNesting > 0) { /* Make sure it's not called from an ISR */
- *err = OS_ERR_PEND_ISR;
- return (0);
- }
- #if OS_ARG_CHK_EN > 0
- if (pevent == (OS_EVENT *)0) { /* Validate 'pevent' */
- *err = OS_ERR_PEVENT_NULL;
- return (0);
- }
- if (pevent->OSEventType != OS_EVENT_TYPE_MUTEX) { /* Validate event block type */
- *err = OS_ERR_EVENT_TYPE;
- return (0);
- }
- #endif
- OS_ENTER_CRITICAL(); /* Get value (0 or 1) of Mutex */
- if ((pevent->OSEventCnt & OS_MUTEX_KEEP_LOWER_8) == OS_MUTEX_AVAILABLE) {
- pevent->OSEventCnt &= OS_MUTEX_KEEP_UPPER_8; /* Mask off LSByte (Acquire Mutex) */
- pevent->OSEventCnt |= OSTCBCur->OSTCBPrio; /* Save current task priority in LSByte */
- pevent->OSEventPtr = (void *)OSTCBCur; /* Link TCB of task owning Mutex */
- OS_EXIT_CRITICAL();
- *err = OS_NO_ERR;
- return (1);
- }
- OS_EXIT_CRITICAL();
- *err = OS_NO_ERR;
- return (0);
- }
- #endif
- /*$PAGE*/
- /*
- *********************************************************************************************************
- * CREATE A MUTUAL EXCLUSION SEMAPHORE
- *
- * Description: This function creates a mutual exclusion semaphore.
- *
- * Arguments : prio is the priority to use when accessing the mutual exclusion semaphore. In
- * other words, when the semaphore is acquired and a higher priority task
- * attempts to obtain the semaphore then the priority of the task owning the
- * semaphore is raised to this priority. It is assumed that you will specify
- * a priority that is LOWER in value than ANY of the tasks competing for the
- * mutex.
- *
- * err is a pointer to an error code which will be returned to your application:
- * OS_NO_ERR if the call was successful.
- * OS_ERR_CREATE_ISR if you attempted to create a MUTEX from an ISR
- * OS_PRIO_EXIST if a task at the priority inheritance priority
- * already exist.
- * OS_ERR_PEVENT_NULL No more event control blocks available.
- * OS_PRIO_INVALID if the priority you specify is higher that the
- * maximum allowed (i.e. > OS_LOWEST_PRIO)
- C51 COMPILER V8.02 OS_MUTEX 06/22/2006 11:44:38 PAGE 3
- *
- * Returns : != (void *)0 is a pointer to the event control clock (OS_EVENT) associated with the
- * created mutex.
- * == (void *)0 if an error is detected.
- *
- * Note(s) : 1) The LEAST significant 8 bits of '.OSEventCnt' are used to hold the priority number
- * of the task owning the mutex or 0xFF if no task owns the mutex.
- * 2) The MOST significant 8 bits of '.OSEventCnt' are used to hold the priority number
- * to use to reduce priority inversion.
- *********************************************************************************************************
- */
- OS_EVENT *OSMutexCreate (INT8U prio, INT8U *err) reentrant
- {
- #if OS_CRITICAL_METHOD == 3 /* Allocate storage for CPU status register */
- OS_CPU_SR cpu_sr;
- #endif
- OS_EVENT *pevent;
- if (OSIntNesting > 0) { /* See if called from ISR ... */
- *err = OS_ERR_CREATE_ISR; /* ... can't CREATE mutex from an ISR */
- return ((OS_EVENT *)0);
- }
- #if OS_ARG_CHK_EN > 0
- if (prio >= OS_LOWEST_PRIO) { /* Validate PIP */
- *err = OS_PRIO_INVALID;
- return ((OS_EVENT *)0);
- }
- #endif
- OS_ENTER_CRITICAL();
- if (OSTCBPrioTbl[prio] != (OS_TCB *)0) { /* Mutex priority must not already exist */
- OS_EXIT_CRITICAL(); /* Task already exist at priority ... */
- *err = OS_PRIO_EXIST; /* ... inheritance priority */
- return ((OS_EVENT *)0);
- }
- OSTCBPrioTbl[prio] = (OS_TCB *)1; /* Reserve the table entry */
- pevent = OSEventFreeList; /* Get next free event control block */
- if (pevent == (OS_EVENT *)0) { /* See if an ECB was available */
- OSTCBPrioTbl[prio] = (OS_TCB *)0; /* No, Release the table entry */
- OS_EXIT_CRITICAL();
- *err = OS_ERR_PEVENT_NULL; /* No more event control blocks */
- return (pevent);
- }
- OSEventFreeList = (OS_EVENT *)OSEventFreeList->OSEventPtr; /* Adjust the free list */
- OS_EXIT_CRITICAL();
- pevent->OSEventType = OS_EVENT_TYPE_MUTEX;
- pevent->OSEventCnt = (prio << 8) | OS_MUTEX_AVAILABLE;/* Resource is available */
- pevent->OSEventPtr = (void *)0; /* No task owning the mutex */
- OS_EventWaitListInit(pevent);
- *err = OS_NO_ERR;
- return (pevent);
- }
- /*$PAGE*/
- /*
- *********************************************************************************************************
- * DELETE A MUTEX
- *
- * Description: This function deletes a mutual exclusion semaphore and readies all tasks pending on the it.
- *
- * Arguments : pevent is a pointer to the event control block associated with the desired mutex.
- C51 COMPILER V8.02 OS_MUTEX 06/22/2006 11:44:38 PAGE 4
- *
- * opt determines delete options as follows:
- * opt == OS_DEL_NO_PEND Delete mutex ONLY if no task pending
- * opt == OS_DEL_ALWAYS Deletes the mutex even if tasks are waiting.
- * In this case, all the tasks pending will be readied.
- *
- * err is a pointer to an error code that can contain one of the following values:
- * OS_NO_ERR The call was successful and the mutex was deleted
- * OS_ERR_DEL_ISR If you attempted to delete the MUTEX from an ISR
- * OS_ERR_INVALID_OPT An invalid option was specified
- * OS_ERR_TASK_WAITING One or more tasks were waiting on the mutex
- * OS_ERR_EVENT_TYPE If you didn't pass a pointer to a mutex
- * OS_ERR_PEVENT_NULL If 'pevent' is a NULL pointer.
- *
- * Returns : pevent upon error
- * (OS_EVENT *)0 if the mutex was successfully deleted.
- *
- * Note(s) : 1) This function must be used with care. Tasks that would normally expect the presence of
- * the mutex MUST check the return code of OSMutexPend().
- * 2) This call can potentially disable interrupts for a long time. The interrupt disable
- * time is directly proportional to the number of tasks waiting on the mutex.
- * 3) Because ALL tasks pending on the mutex will be readied, you MUST be careful because the
- * resource(s) will no longer be guarded by the mutex.
- *********************************************************************************************************
- */
- #if OS_MUTEX_DEL_EN
- OS_EVENT *OSMutexDel (OS_EVENT *pevent, INT8U opt, INT8U *err) reentrant
- {
- #if OS_CRITICAL_METHOD == 3 /* Allocate storage for CPU status register */
- OS_CPU_SR cpu_sr;
- #endif
- BOOLEAN tasks_waiting;
- INT8U pip;
- if (OSIntNesting > 0) { /* See if called from ISR ... */
- *err = OS_ERR_DEL_ISR; /* ... can't DELETE from an ISR */
- return (pevent);
- }
- #if OS_ARG_CHK_EN > 0
- if (pevent == (OS_EVENT *)0) { /* Validate 'pevent' */
- *err = OS_ERR_PEVENT_NULL;
- return ((OS_EVENT *)0);
- }
- if (pevent->OSEventType != OS_EVENT_TYPE_MUTEX) { /* Validate event block type */
- *err = OS_ERR_EVENT_TYPE;
- return (pevent);
- }
- #endif
- OS_ENTER_CRITICAL();
- if (pevent->OSEventGrp != 0x00) { /* See if any tasks waiting on mutex */
- tasks_waiting = TRUE; /* Yes */
- } else {
- tasks_waiting = FALSE; /* No */
- }
- switch (opt) {
- case OS_DEL_NO_PEND: /* Delete mutex only if no task waiting */
- if (tasks_waiting == FALSE) {
- pip = (INT8U)(pevent->OSEventCnt >> 8);
- OSTCBPrioTbl[pip] = (OS_TCB *)0; /* Free up the PIP */
- pevent->OSEventType = OS_EVENT_TYPE_UNUSED;
- C51 COMPILER V8.02 OS_MUTEX 06/22/2006 11:44:38 PAGE 5
- pevent->OSEventPtr = OSEventFreeList; /* Return Event Control Block to free list */
- OSEventFreeList = pevent;
- OS_EXIT_CRITICAL();
- *err = OS_NO_ERR;
- return ((OS_EVENT *)0); /* Mutex has been deleted */
- } else {
- OS_EXIT_CRITICAL();
- *err = OS_ERR_TASK_WAITING;
- return (pevent);
- }
- case OS_DEL_ALWAYS: /* Always delete the mutex */
- while (pevent->OSEventGrp != 0x00) { /* Ready ALL tasks waiting for mutex */
- OS_EventTaskRdy(pevent, (void *)0, OS_STAT_MUTEX);
- }
- pip = (INT8U)(pevent->OSEventCnt >> 8);
- OSTCBPrioTbl[pip] = (OS_TCB *)0; /* Free up the PIP */
- pevent->OSEventType = OS_EVENT_TYPE_UNUSED;
- pevent->OSEventPtr = OSEventFreeList; /* Return Event Control Block to free list */
- OSEventFreeList = pevent; /* Get next free event control block */
- OS_EXIT_CRITICAL();
- if (tasks_waiting == TRUE) { /* Reschedule only if task(s) were waiting */
- OS_Sched(); /* Find highest priority task ready to run */
- }
- *err = OS_NO_ERR;
- return ((OS_EVENT *)0); /* Mutex has been deleted */
- default:
- OS_EXIT_CRITICAL();
- *err = OS_ERR_INVALID_OPT;
- return (pevent);
- }
- }
- #endif
- /*$PAGE*/
- /*
- *********************************************************************************************************
- * PEND ON MUTUAL EXCLUSION SEMAPHORE
- *
- * Description: This function waits for a mutual exclusion semaphore.
- *
- * Arguments : pevent is a pointer to the event control block associated with the desired
- * mutex.
- *
- * timeout is an optional timeout period (in clock ticks). If non-zero, your task will
- * wait for the resource up to the amount of time specified by this argument.
- * If you specify 0, however, your task will wait forever at the specified
- * mutex or, until the resource becomes available.
- *
- * err is a pointer to where an error message will be deposited. Possible error
- * messages are:
- * OS_NO_ERR The call was successful and your task owns the mutex
- * OS_TIMEOUT The mutex was not available within the specified time.
- * OS_ERR_EVENT_TYPE If you didn't pass a pointer to a mutex
- * OS_ERR_PEVENT_NULL 'pevent' is a NULL pointer
- * OS_ERR_PEND_ISR If you called this function from an ISR and the result
- * would lead to a suspension.
- *
- * Returns : none
- *
- * Note(s) : 1) The task that owns the Mutex MUST NOT pend on any other event while it owns the mutex.
- C51 COMPILER V8.02 OS_MUTEX 06/22/2006 11:44:38 PAGE 6
- * 2) You MUST NOT change the priority of the task that owns the mutex
- *********************************************************************************************************
- */
- void OSMutexPend (OS_EVENT *pevent, INT16U timeout, INT8U *err) reentrant
- {
- #if OS_CRITICAL_METHOD == 3 /* Allocate storage for CPU status register */
- OS_CPU_SR cpu_sr;
- #endif
- INT8U pip; /* Priority Inheritance Priority (PIP) */
- INT8U mprio; /* Mutex owner priority */
- BOOLEAN rdy; /* Flag indicating task was ready */
- OS_TCB *ptcb;
- if (OSIntNesting > 0) { /* See if called from ISR ... */
- *err = OS_ERR_PEND_ISR; /* ... can't PEND from an ISR */
- return;
- }
- #if OS_ARG_CHK_EN > 0
- if (pevent == (OS_EVENT *)0) { /* Validate 'pevent' */
- *err = OS_ERR_PEVENT_NULL;
- return;
- }
- if (pevent->OSEventType != OS_EVENT_TYPE_MUTEX) { /* Validate event block type */
- *err = OS_ERR_EVENT_TYPE;
- return;
- }
- #endif
- OS_ENTER_CRITICAL(); /* Is Mutex available? */
- if ((INT8U)(pevent->OSEventCnt & OS_MUTEX_KEEP_LOWER_8) == OS_MUTEX_AVAILABLE) {
- pevent->OSEventCnt &= OS_MUTEX_KEEP_UPPER_8; /* Yes, Acquire the resource */
- pevent->OSEventCnt |= OSTCBCur->OSTCBPrio; /* Save priority of owning task */
- pevent->OSEventPtr = (void *)OSTCBCur; /* Point to owning task's OS_TCB */
- OS_EXIT_CRITICAL();
- *err = OS_NO_ERR;
- return;
- }
- pip = (INT8U)(pevent->OSEventCnt >> 8); /* No, Get PIP from mutex */
- mprio = (INT8U)(pevent->OSEventCnt & OS_MUTEX_KEEP_LOWER_8); /* Get priority of mutex owner */
- ptcb = (OS_TCB *)(pevent->OSEventPtr); /* Point to TCB of mutex owner */
- if (ptcb->OSTCBPrio != pip && mprio > OSTCBCur->OSTCBPrio) { /* Need to promote prio of owner?*/
- if ((OSRdyTbl[ptcb->OSTCBY] & ptcb->OSTCBBitX) != 0x00) { /* See if mutex owner is ready */
- /* Yes, Remove owner from Rdy ...*/
- /* ... list at current prio */
- if ((OSRdyTbl[ptcb->OSTCBY] &= ~ptcb->OSTCBBitX) == 0x00) {
- OSRdyGrp &= ~ptcb->OSTCBBitY;
- }
- rdy = TRUE;
- } else {
- rdy = FALSE; /* No */
- }
- ptcb->OSTCBPrio = pip; /* Change owner task prio to PIP */
- ptcb->OSTCBY = ptcb->OSTCBPrio >> 3;
- ptcb->OSTCBBitY = OSMapTbl[ptcb->OSTCBY];
- ptcb->OSTCBX = ptcb->OSTCBPrio & 0x07;
- ptcb->OSTCBBitX = OSMapTbl[ptcb->OSTCBX];
- if (rdy == TRUE) { /* If task was ready at owner's priority ...*/
- OSRdyGrp |= ptcb->OSTCBBitY; /* ... make it ready at new priority. */
- OSRdyTbl[ptcb->OSTCBY] |= ptcb->OSTCBBitX;
- }
- OSTCBPrioTbl[pip] = (OS_TCB *)ptcb;
- }
- C51 COMPILER V8.02 OS_MUTEX 06/22/2006 11:44:38 PAGE 7
- OSTCBCur->OSTCBStat |= OS_STAT_MUTEX; /* Mutex not available, pend current task */
- OSTCBCur->OSTCBDly = timeout; /* Store timeout in current task's TCB */
- OS_EventTaskWait(pevent); /* Suspend task until event or timeout occurs */
- OS_EXIT_CRITICAL();
- OS_Sched(); /* Find next highest priority task ready */
- OS_ENTER_CRITICAL();
- if (OSTCBCur->OSTCBStat & OS_STAT_MUTEX) { /* Must have timed out if still waiting for event*/
- OS_EventTO(pevent);
- OS_EXIT_CRITICAL();
- *err = OS_TIMEOUT; /* Indicate that we didn't get mutex within TO */
- return;
- }
- OSTCBCur->OSTCBEventPtr = (OS_EVENT *)0;
- OS_EXIT_CRITICAL();
- *err = OS_NO_ERR;
- }
- /*$PAGE*/
- /*
- *********************************************************************************************************
- * POST TO A MUTUAL EXCLUSION SEMAPHORE
- *
- * Description: This function signals a mutual exclusion semaphore
- *
- * Arguments : pevent is a pointer to the event control block associated with the desired
- * mutex.
- *
- * Returns : OS_NO_ERR The call was successful and the mutex was signaled.
- * OS_ERR_EVENT_TYPE If you didn't pass a pointer to a mutex
- * OS_ERR_PEVENT_NULL 'pevent' is a NULL pointer
- * OS_ERR_POST_ISR Attempted to post from an ISR (not valid for MUTEXes)
- * OS_ERR_NOT_MUTEX_OWNER The task that did the post is NOT the owner of the MUTEX.
- *********************************************************************************************************
- */
- INT8U OSMutexPost (OS_EVENT *pevent) reentrant
- {
- #if OS_CRITICAL_METHOD == 3 /* Allocate storage for CPU status register */
- OS_CPU_SR cpu_sr;
- #endif
- INT8U pip; /* Priority inheritance priority */
- INT8U prio;
- if (OSIntNesting > 0) { /* See if called from ISR ... */
- return (OS_ERR_POST_ISR); /* ... can't POST mutex from an ISR */
- }
- #if OS_ARG_CHK_EN > 0
- if (pevent == (OS_EVENT *)0) { /* Validate 'pevent' */
- return (OS_ERR_PEVENT_NULL);
- }
- if (pevent->OSEventType != OS_EVENT_TYPE_MUTEX) { /* Validate event block type */
- return (OS_ERR_EVENT_TYPE);
- }
- #endif
- OS_ENTER_CRITICAL();
- pip = (INT8U)(pevent->OSEventCnt >> 8); /* Get priority inheritance priority of mutex */
- prio = (INT8U)(pevent->OSEventCnt & OS_MUTEX_KEEP_LOWER_8); /* Get owner's original priority */
- if (OSTCBCur->OSTCBPrio != pip &&
- OSTCBCur->OSTCBPrio != prio) { /* See if posting task owns the MUTEX */
- OS_EXIT_CRITICAL();
- return (OS_ERR_NOT_MUTEX_OWNER);
- }
- C51 COMPILER V8.02 OS_MUTEX 06/22/2006 11:44:38 PAGE 8
- if (OSTCBCur->OSTCBPrio == pip) { /* Did we have to raise current task's priority? */
- /* Yes, Return to original priority */
- /* Remove owner from ready list at 'pip' */
- if ((OSRdyTbl[OSTCBCur->OSTCBY] &= ~OSTCBCur->OSTCBBitX) == 0) {
- OSRdyGrp &= ~OSTCBCur->OSTCBBitY;
- }
- OSTCBCur->OSTCBPrio = prio;
- OSTCBCur->OSTCBY = prio >> 3;
- OSTCBCur->OSTCBBitY = OSMapTbl[OSTCBCur->OSTCBY];
- OSTCBCur->OSTCBX = prio & 0x07;
- OSTCBCur->OSTCBBitX = OSMapTbl[OSTCBCur->OSTCBX];
- OSRdyGrp |= OSTCBCur->OSTCBBitY;
- OSRdyTbl[OSTCBCur->OSTCBY] |= OSTCBCur->OSTCBBitX;
- OSTCBPrioTbl[prio] = (OS_TCB *)OSTCBCur;
- }
- OSTCBPrioTbl[pip] = (OS_TCB *)1; /* Reserve table entry */
- if (pevent->OSEventGrp != 0x00) { /* Any task waiting for the mutex? */
- /* Yes, Make HPT waiting for mutex ready */
- prio = OS_EventTaskRdy(pevent, (void *)0, OS_STAT_MUTEX);
- pevent->OSEventCnt &= OS_MUTEX_KEEP_UPPER_8; /* Save priority of mutex's new owner */
- pevent->OSEventCnt |= prio;
- pevent->OSEventPtr = OSTCBPrioTbl[prio]; /* Link to mutex owner's OS_TCB */
- OS_EXIT_CRITICAL();
- OS_Sched(); /* Find highest priority task ready to run */
- return (OS_NO_ERR);
- }
- pevent->OSEventCnt |= OS_MUTEX_AVAILABLE; /* No, Mutex is now available */
- pevent->OSEventPtr = (void *)0;
- OS_EXIT_CRITICAL();
- return (OS_NO_ERR);
- }
- /*$PAGE*/
- /*
- *********************************************************************************************************
- * QUERY A MUTUAL EXCLUSION SEMAPHORE
- *
- * Description: This function obtains information about a mutex
- *
- * Arguments : pevent is a pointer to the event control block associated with the desired mutex
- *
- * ppdata is a pointer to a structure that will contain information about the mutex
- *
- * Returns : OS_NO_ERR The call was successful and the message was sent
- * OS_ERR_QUERY_ISR If you called this function from an ISR
- * OS_ERR_PEVENT_NULL 'pevent' is a NULL pointer
- * OS_ERR_EVENT_TYPE If you are attempting to obtain data from a non mutex.
- *********************************************************************************************************
- */
- #if OS_MUTEX_QUERY_EN > 0
- INT8U OSMutexQuery (OS_EVENT *pevent, OS_MUTEX_DATA *ppdata) reentrant
- {
- #if OS_CRITICAL_METHOD == 3 /* Allocate storage for CPU status register */
- OS_CPU_SR cpu_sr;
- #endif
- INT8U *psrc;
- INT8U *pdest;
- if (OSIntNesting > 0) { /* See if called from ISR ... */
- return (OS_ERR_QUERY_ISR); /* ... can't QUERY mutex from an ISR */
- }
- C51 COMPILER V8.02 OS_MUTEX 06/22/2006 11:44:38 PAGE 9
- #if OS_ARG_CHK_EN > 0
- if (pevent == (OS_EVENT *)0) { /* Validate 'pevent' */
- return (OS_ERR_PEVENT_NULL);
- }
- if (pevent->OSEventType != OS_EVENT_TYPE_MUTEX) { /* Validate event block type */
- return (OS_ERR_EVENT_TYPE);
- }
- #endif
- OS_ENTER_CRITICAL();
- ppdata->OSMutexPIP = (INT8U)(pevent->OSEventCnt >> 8);
- ppdata->OSOwnerPrio = (INT8U)(pevent->OSEventCnt & OS_MUTEX_KEEP_LOWER_8);
- if (ppdata->OSOwnerPrio == 0xFF) {
- ppdata->OSValue = 1;
- } else {
- ppdata->OSValue = 0;
- }
- ppdata->OSEventGrp = pevent->OSEventGrp; /* Copy wait list */
- psrc = &pevent->OSEventTbl[0];
- pdest = &ppdata->OSEventTbl[0];
- #if OS_EVENT_TBL_SIZE > 0
- *pdest++ = *psrc++;
- #endif
- #if OS_EVENT_TBL_SIZE > 1
- *pdest++ = *psrc++;
- #endif
- #if OS_EVENT_TBL_SIZE > 2
- *pdest++ = *psrc++;
- #endif
- #if OS_EVENT_TBL_SIZE > 3
- *pdest++ = *psrc++;
- #endif
- #if OS_EVENT_TBL_SIZE > 4
- *pdest++ = *psrc++;
- #endif
- #if OS_EVENT_TBL_SIZE > 5
- *pdest++ = *psrc++;
- #endif
- #if OS_EVENT_TBL_SIZE > 6
- *pdest++ = *psrc++;
- #endif
- #if OS_EVENT_TBL_SIZE > 7
- *pdest = *psrc;
- #endif
- OS_EXIT_CRITICAL();
- return (OS_NO_ERR);
- }
- #endif /* OS_MUTEX_QUERY_EN */
- #endif /* OS_MUTEX_EN */
- MODULE INFORMATION: STATIC OVERLAYABLE
- CODE SIZE = ---- ----
- CONSTANT SIZE = ---- ----
- XDATA SIZE = ---- ----
- PDATA SIZE = ---- ----
- C51 COMPILER V8.02 OS_MUTEX 06/22/2006 11:44:38 PAGE 10
- DATA SIZE = ---- ----
- IDATA SIZE = ---- ----
- BIT SIZE = ---- ----
- END OF MODULE INFORMATION.
- C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
