📄 tx_el.c
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/* CALLS */
/* */
/* None */
/* */
/* CALLED BY */
/* */
/* _tx_thread_create ThreadX thread create function */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 12-02-1999 William E. Lamie Initial Version 3.0a */
/* */
/**************************************************************************/
UINT _tx_el_thread_register(TX_THREAD *thread_ptr)
{
UCHAR *entry_ptr;
UCHAR *work_ptr;
UCHAR *read_ptr;
UINT i;
/* First of all, search for a free slot in the TNI area. */
entry_ptr = _tx_el_tni_start;
i = 0;
while (i < TX_EL_TNIS)
{
/* Determine if this entry is available. */
if (*(entry_ptr + TX_EL_TNI_VALID_OFFSET) == TX_EL_INVALID_ENTRY)
break;
/* Otherwise, increment the associated pointers and indicies. */
i++;
entry_ptr = entry_ptr + TX_EL_TNI_ENTRY_SIZE;
}
/* Check to see if there were no more valid entries. */
if (i >= TX_EL_TNIS)
return(TX_EL_NO_MORE_TNI_ROOM);
/* Otherwise, we have room in the TNI and a valid record. */
/* Setup the thread's name. */
work_ptr = entry_ptr;
read_ptr = (UCHAR *) thread_ptr -> tx_thread_name;
i = 0;
while ((i < TX_EL_TNI_NAME_SIZE) && (*read_ptr))
{
/* Copy a character of thread's name into TNI area of log. */
*work_ptr++ = *read_ptr++;
/* Increment the character count. */
i++;
}
/* Determine if a NULL needs to be inserted. */
if (i < TX_EL_TNI_NAME_SIZE)
{
/* Yes, insert a NULL into the event log string. */
*work_ptr = (unsigned char) 0;
}
/* Setup the thread ID. */
*((ULONG *) (entry_ptr + TX_EL_TNI_THREAD_ID_OFFSET)) = (ULONG) thread_ptr;
/* Setup the thread priority. */
*((ULONG *) (entry_ptr + TX_EL_TNI_THREAD_PRIORITY_OFF)) = (ULONG) thread_ptr -> tx_priority;
/* Set the valid field to indicate the entry is complete. */
*((UCHAR *) (entry_ptr + TX_EL_TNI_VALID_OFFSET)) = (ULONG) TX_EL_VALID_ENTRY;
}
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _tx_el_user_event_insert 68332/Green Hills */
/* 3.0a */
/* AUTHOR */
/* */
/* William E. Lamie, Express Logic, Inc. */
/* */
/* DESCRIPTION */
/* */
/* This function inserts a user event into the event log. */
/* If the event log is full, the oldest event is overwritten. */
/* */
/* INPUT */
/* */
/* sub_type Event sub-type for kernel call*/
/* info_1 First information field */
/* info_2 Second information field */
/* info_3 Third information field */
/* info_4 Fourth information field */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* None */
/* */
/* CALLED BY */
/* */
/* ThreadX services */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 12-02-1999 William E. Lamie Initial Version 3.0a */
/* */
/**************************************************************************/
VOID _tx_el_user_event_insert(UINT sub_type, ULONG info_1, ULONG info_2,
ULONG info_3, ULONG info_4)
{
TX_INTERRUPT_SAVE_AREA
UINT upper_tb;
UCHAR *entry_ptr;
/* Disable interrupts. */
TX_DISABLE
/* Increment total event counter. */
_tx_el_total_events++;
/* Setup working entry pointer first. */
entry_ptr = *_tx_el_current_event;
/* Store the event type and sub-type. */
*((unsigned short *) entry_ptr) = TX_EL_USER_EVENT;
*((unsigned short *) (entry_ptr + TX_EL_EVENT_SUBTYPE_OFFSET)) = (unsigned short) sub_type;
/* Store the upper time stamp. */
*((ULONG *) (entry_ptr + TX_EL_EVENT_TIME_UPPER_OFFSET)) =
(ULONG) 0;
/* Store the lower time stamp. */
*((ULONG *) (entry_ptr + TX_EL_EVENT_TIME_LOWER_OFFSET)) =
(ULONG) _tx_el_fake_time_stamp++;
/* Store the current thread. */
*((ULONG *) (entry_ptr + TX_EL_EVENT_THREAD_OFFSET)) =
(ULONG) _tx_thread_current_ptr;
/* Store the first info field. */
*((ULONG *) (entry_ptr + TX_EL_EVENT_INFO_1_OFFSET)) =
(ULONG) info_1;
/* Store the second info field. */
*((ULONG *) (entry_ptr + TX_EL_EVENT_INFO_2_OFFSET)) =
(ULONG) info_2;
/* Store the third info field. */
*((ULONG *) (entry_ptr + TX_EL_EVENT_INFO_3_OFFSET)) =
(ULONG) info_3;
/* Store the fourth info field. */
*((ULONG *) (entry_ptr + TX_EL_EVENT_INFO_4_OFFSET)) =
(ULONG) info_4;
/* Now move the current event log pointer. */
entry_ptr = entry_ptr + TX_EL_EVENT_SIZE;
/* Check for a wrap-around condition. */
if (entry_ptr >= _tx_el_event_area_end)
{
/* Yes, we have wrapped around to the end of the event area.
Start back at the top! */
entry_ptr = _tx_el_event_area_start;
}
/* Write the entry pointer back into the header. */
*_tx_el_current_event = entry_ptr;
/* Restore interrupts. */
TX_RESTORE
}
/**************************************************************************/
/* */
/* FUNCTION RELEASE */
/* */
/* _tx_el_thread_running 68332/Green Hills */
/* 3.0a */
/* AUTHOR */
/* */
/* William E. Lamie, Express Logic, Inc. */
/* */
/* DESCRIPTION */
/* */
/* This function inserts a thread change event into the event */
/* log, which indicates that a context switch is taking place. */
/* If the event log is full, the oldest event is overwritten. */
/* */
/* INPUT */
/* */
/* thread_ptr Pointer to thread being */
/* scheduled */
/* */
/* OUTPUT */
/* */
/* None */
/* */
/* CALLS */
/* */
/* None */
/* */
/* CALLED BY */
/* */
/* _tx_thread_schedule ThreadX scheduler */
/* */
/* RELEASE HISTORY */
/* */
/* DATE NAME DESCRIPTION */
/* */
/* 12-02-1999 William E. Lamie Initial Version 3.0a */
/* */
/**************************************************************************/
VOID _tx_el_thread_running(TX_THREAD *thread_ptr)
{
UINT upper_tb;
UCHAR *entry_ptr;
TX_EL_NO_STATUS_EVENTS
/* Increment total event counter. */
_tx_el_total_events++;
/* Setup working entry pointer first. */
entry_ptr = *_tx_el_current_event;
/* Store the event type and sub-type. */
*((unsigned short *) entry_ptr) = TX_EL_THREAD_CHANGE;
*((unsigned short *) (entry_ptr + TX_EL_EVENT_SUBTYPE_OFFSET)) = (unsigned short) 0; \
/* Store the upper time stamp. */
*((ULONG *) (entry_ptr + TX_EL_EVENT_TIME_UPPER_OFFSET)) =
(ULONG) 0;
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