任务的静态实例化
VX_TASK宏用来在编译时声明一个任务对象。该宏带有2个参数：任务名和栈大小。不像taskSpawn函数，任务名称可以是NULL。VX_TASK的任务名称必须指定。栈大小是非零值并且是编译时常量。
VX_TASK_INSTANTIATE宏被VX_TASK用来初始化和创建任务，等价于taskSpawn函数的功能。VX_TASK_INITIALIZE宏杯VX_TASK初始化任务并让任务处于SUSPEND状态，直到稍后调用taskActivate函数来激活。
VX_TASK_INSTANTIATE返回发起的任务ID，或者错误码。VX_TASK和VX_TASK_INITIALIZE必须使用相同的任务名。
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 | #include <vxWorks.h>
#include <taskLib.h>
VX_TASK(myTask,4096);
int?myTaskId;
STATUS initializeFunction (void)
????{
????myTaskId = VX_TASK_INSTANTIATE(myTask, 100, 0, 4096, pEntry, \
???????????????????????????????????0,1,2,3,4,5,6,7,8,9);
???if?(myTaskId != ERROR)
???????return?(OK);????????????????/* instantiation succeeded */
???else
???????return?(ERROR);
????}
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为了初始化任务并使它处于SUSPEND状态，必须使用VX_TASK_INITALIZE宏。并在稍后使用taskActivate函数来运行该任务。VX_TASK_INSTANIATE和taskActivate使用相同的参数。
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | #include <vxWorks.h>
#include <taskLib.h>
VX_TASK(myTask,4096);
int?myTaskId;
STATUS initializeFunction (void)
{
????myTaskId = VX_TASK_INITIALIZE(myTask, 100, 0, 4096, pEntry, \
??????????????????????????????????0,1,2,3,4,5,6,7,8,9);
???if?(myTaskId != NULL)
???????{
???????taskActivate (myTaskId);
???????return?(OK);
???????}
???else
???????return?(ERROR);
}
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更多信息，请参阅taskLib的API手册。
信号量的静态实例化
VX_BINARY_SEMAPHORE,VX_COUNTING_SEMAPHORE,VX_MUTEX_SEMAPHORE和VX_READ_WRITE_SEMAPHORE宏分别用来在编译时定义二进制信号量、计数信号量、互斥信号量。这些必须以信号量名称作为参数。
这些信号量通过semBInitialize，semCInitialzie，semMInitialize和semRWInitialize函数来初始化定义的信号量。semXInitialize函数等价于semXCreate函数。
VX_XXX_SEMAPHORE和semXInitialize函数必须使用相同的信号量名称。semXInitialize函数返回信号量的ID。
| 1 2 3 4 5 6 7 8 9 10 11 12 | #include <vxWorks.h>
#include <semLib.h>
VX_BINARY_SEMAPHORE(mySemB);???/* declare the semaphore */
SEM_ID mySemBId;???????????????/* semaphore ID for further operations */
STATUS initializeFunction (void)
{
????if?((mySemBId = semBInitialize (mysemB, options, 0)) == NULL)
?????????return?(ERROR);??????/* initialization failed */
????else
?????????return?(OK);
}
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消息队列的静态实例化
VX_MSG_Q用来在编译时声明消息队列对象。带有3个参数：名称，消息队列最大数量及每个消息的最大尺寸。msgQInitialize函数在运行时初始化消息队列使之可用。宏和函数的参数必须保持一致。
| 1 2 3 4 5 6 7 8 9 10 11 | #include <vxWorks.h>
#include <msgQLib.h>
VX_MSG_Q(myMsgQ,100,16);?????????/* declare the msgQ */
MSG_Q_ID myMsgQId;???????????????/* MsgQ ID to send/receive messages */
STATUS initializeFunction (void)
{
????if?((myMsgQId = msgQInitialize (myMsgQ, 100, 16, options)) == NULL)
?????????return?(ERROR);??????/* initialization failed */
????else
?????????return?(OK);
}
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看门狗时钟的静态实例化
VX_WDOG在编译时声明看门狗时钟。带有一个参数，看门狗名称。wdInitialize函数在运行时初始化看门狗时钟。
| 1 2 3 4 5 6 7 8 9 10 11 | #include <vxWorks.h>
#include <wdLib.h>
VX_WDOG(myWdog);????/* declare the watchdog */
WDOG_ID myWdogId;???/* watchdog ID for further operations */
STATUS initializeFunction (void)
{
????if?((myWdogId = wdInitialize (myWdog)) == NULL)
?????????return?(ERROR);???????/* initialization failed */
????else
?????????return?(OK);
}
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