diff options
| author | Yuxin Zhou <[email protected]> | 2021-10-14 00:51:26 +0000 |
|---|---|---|
| committer | Yuxin Zhou <[email protected]> | 2021-10-14 00:51:26 +0000 |
| commit | 1af8404c54f9c8d3caa2ac3523c2a5f014aecb1c (patch) | |
| tree | 93e4f4d64ec8c21c01b77f19b8e7326e85227e3d /common_smp/src/tx_queue_prioritize.c | |
| parent | 215df45d4b59d4ce8606a88f566d1d426e64a84c (diff) | |
Release 6.1.9
Diffstat (limited to 'common_smp/src/tx_queue_prioritize.c')
| -rw-r--r-- | common_smp/src/tx_queue_prioritize.c | 88 |
1 files changed, 45 insertions, 43 deletions
diff --git a/common_smp/src/tx_queue_prioritize.c b/common_smp/src/tx_queue_prioritize.c index 54132aa4..ae80ce79 100644 --- a/common_smp/src/tx_queue_prioritize.c +++ b/common_smp/src/tx_queue_prioritize.c @@ -12,8 +12,8 @@ /**************************************************************************/ /**************************************************************************/ -/** */ -/** ThreadX Component */ +/** */ +/** ThreadX Component */ /** */ /** Queue */ /** */ @@ -31,43 +31,45 @@ #include "tx_queue.h" -/**************************************************************************/ -/* */ -/* FUNCTION RELEASE */ -/* */ -/* _tx_queue_prioritize PORTABLE C */ +/**************************************************************************/ +/* */ +/* FUNCTION RELEASE */ +/* */ +/* _tx_queue_prioritize PORTABLE C */ /* 6.1 */ /* AUTHOR */ /* */ /* William E. Lamie, Microsoft Corporation */ /* */ /* DESCRIPTION */ -/* */ -/* This function places the highest priority suspended thread at the */ -/* front of the suspension list. All other threads remain in the same */ -/* FIFO suspension order. */ -/* */ -/* INPUT */ -/* */ -/* queue_ptr Pointer to queue control block */ -/* */ -/* OUTPUT */ -/* */ -/* status Completion status */ -/* */ -/* CALLS */ -/* */ -/* _tx_thread_system_preempt_check Check for preemption */ -/* */ -/* CALLED BY */ -/* */ -/* Application Code */ -/* */ -/* RELEASE HISTORY */ -/* */ +/* */ +/* This function places the highest priority suspended thread at the */ +/* front of the suspension list. All other threads remain in the same */ +/* FIFO suspension order. */ +/* */ +/* INPUT */ +/* */ +/* queue_ptr Pointer to queue control block */ +/* */ +/* OUTPUT */ +/* */ +/* status Completion status */ +/* */ +/* CALLS */ +/* */ +/* _tx_thread_system_preempt_check Check for preemption */ +/* */ +/* CALLED BY */ +/* */ +/* Application Code */ +/* */ +/* RELEASE HISTORY */ +/* */ /* DATE NAME DESCRIPTION */ /* */ -/* 09-30-2020 William E. Lamie Initial Version 6.1 */ +/* 05-19-2020 William E. Lamie Initial Version 6.0 */ +/* 09-30-2020 Yuxin Zhou Modified comment(s), */ +/* resulting in version 6.1 */ /* */ /**************************************************************************/ UINT _tx_queue_prioritize(TX_QUEUE *queue_ptr) @@ -75,8 +77,8 @@ UINT _tx_queue_prioritize(TX_QUEUE *queue_ptr) TX_INTERRUPT_SAVE_AREA -TX_THREAD *thread_ptr; -TX_THREAD *priority_thread_ptr; +TX_THREAD *thread_ptr; +TX_THREAD *priority_thread_ptr; TX_THREAD *head_ptr; UINT suspended_count; TX_THREAD *next_thread; @@ -123,7 +125,7 @@ UINT list_changed; /* Restore interrupts. */ TX_RESTORE } - else + else { /* Remember the suspension count and head pointer. */ @@ -159,28 +161,28 @@ UINT list_changed; /* Disable interrupts again. */ TX_DISABLE - /* Determine if any changes to the list have occurred while + /* Determine if any changes to the list have occurred while interrupts were enabled. */ - + /* Is the list head the same? */ if (head_ptr != queue_ptr -> tx_queue_suspension_list) { - + /* The list head has changed, set the list changed flag. */ list_changed = TX_TRUE; } else { - + /* Is the suspended count the same? */ if (suspended_count != queue_ptr -> tx_queue_suspended_count) { - + /* The list head has changed, set the list changed flag. */ list_changed = TX_TRUE; - } + } } - + /* Determine if the list has changed. */ if (list_changed == TX_FALSE) { @@ -210,12 +212,12 @@ UINT list_changed; /* Release preemption. */ _tx_thread_preempt_disable--; - /* Now determine if the highest priority thread is at the front + /* Now determine if the highest priority thread is at the front of the list. */ if (priority_thread_ptr != head_ptr) { - /* No, we need to move the highest priority suspended thread to the + /* No, we need to move the highest priority suspended thread to the front of the list. */ /* First, remove the highest priority thread by updating the |