Initial revision

src/ca/V5_vxWorks_patch.c

@@ -0,0 +1,65 @@
+#ifdef V5_vxWorks
+
+#include <taskLib.h>
+#include <taskVarLib.h>
+
+/*******************************************************************************
+*
+* joh 2-3-92
+* this a modified version of the WRS orig which
+* allows tasks variables to be fetched from a 
+* task delete hook.
+*
+*
+*
+*
+* taskVarGetPatch - get the value of a task variable
+*
+* This routine returns the private value of the task variable for a
+* specific task.  The specified task is usually not the calling task,
+* which can get its private value by directly accessing the variable.
+* This routine is provided primarily for debugging purposes.
+*
+* RETURNS:
+* The private value of the task variable, or
+* ERROR if the specified task is not found or it
+* does not own the task variable.
+*
+* SEE ALSO: taskVarAdd(2), taskVarDelete(2), taskVarSet(2)
+*/
+
+int taskVarGetPatch (tid, pVar)
+    int tid;		/* task id whose task variable is to be retrieved */
+    int *pVar;		/* pointer to task variable */
+			 
+    {
+    FAST TASK_VAR *pTaskVar;		/* ptr to next node */
+    WIND_TCB *pTcb;
+/* 
+ * joh 020392
+ * dont call taskTcb() here and bypass error check
+ * which keeps this from working in a task delete hook
+ */
+    pTcb = (WIND_TCB *) tid;
+
+    if (pTcb == NULL)
+	return (ERROR);
+
+    /* find descriptor for specified task variable */
+
+    for (pTaskVar = pTcb->pTaskVar;
+	 pTaskVar != NULL;
+	 pTaskVar = pTaskVar->next)
+	{
+	if (pTaskVar->address == pVar)
+	    return (taskIdCurrent == pTcb ? *pVar : pTaskVar->value);
+	}
+
+
+    /* specified address is not a task variable for specified task */
+
+    errnoSet(S_taskLib_TASK_VAR_NOT_FOUND);
+    return (ERROR);
+    }
+
+#endif