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/src/tx_thread_priority_change.c | |
| parent | 215df45d4b59d4ce8606a88f566d1d426e64a84c (diff) | |
Release 6.1.9
Diffstat (limited to 'common/src/tx_thread_priority_change.c')
| -rw-r--r-- | common/src/tx_thread_priority_change.c | 36 |
1 files changed, 18 insertions, 18 deletions
diff --git a/common/src/tx_thread_priority_change.c b/common/src/tx_thread_priority_change.c index 967867b1..06b9391e 100644 --- a/common/src/tx_thread_priority_change.c +++ b/common/src/tx_thread_priority_change.c @@ -116,19 +116,19 @@ UINT original_priority; block. */ thread_ptr -> tx_thread_user_priority = new_priority; thread_ptr -> tx_thread_user_preempt_threshold = new_priority; - + /* Determine if the actual thread priority should be setup, which is the case if the new priority is higher than the priority inheritance. */ if (new_priority < thread_ptr -> tx_thread_inherit_priority) { - + /* Change thread priority to the new user's priority. */ thread_ptr -> tx_thread_priority = new_priority; thread_ptr -> tx_thread_preempt_threshold = new_priority; } else { - + /* Change thread priority to the priority inheritance. */ thread_ptr -> tx_thread_priority = thread_ptr -> tx_thread_inherit_priority; thread_ptr -> tx_thread_preempt_threshold = thread_ptr -> tx_thread_inherit_priority; @@ -157,7 +157,7 @@ UINT original_priority; /* Call actual non-interruptable thread suspension routine. */ _tx_thread_system_ni_suspend(thread_ptr, ((ULONG) 0)); - /* At this point, the preempt disable flag is still set, so we still have + /* At this point, the preempt disable flag is still set, so we still have protection against all preemption. */ /* Setup the new priority for this thread. */ @@ -168,14 +168,14 @@ UINT original_priority; case if the new priority is higher than the priority inheritance. */ if (new_priority < thread_ptr -> tx_thread_inherit_priority) { - + /* Change thread priority to the new user's priority. */ thread_ptr -> tx_thread_priority = new_priority; thread_ptr -> tx_thread_preempt_threshold = new_priority; } else { - + /* Change thread priority to the priority inheritance. */ thread_ptr -> tx_thread_priority = thread_ptr -> tx_thread_inherit_priority; thread_ptr -> tx_thread_preempt_threshold = thread_ptr -> tx_thread_inherit_priority; @@ -186,7 +186,7 @@ UINT original_priority; #else - /* Increment the preempt disable flag by 2 to prevent system suspend from + /* Increment the preempt disable flag by 2 to prevent system suspend from returning to the system. */ _tx_thread_preempt_disable = _tx_thread_preempt_disable + ((UINT) 3); @@ -199,11 +199,11 @@ UINT original_priority; /* Restore interrupts. */ TX_RESTORE - /* The thread is ready and must first be removed from the list. Call the + /* The thread is ready and must first be removed from the list. Call the system suspend function to accomplish this. */ _tx_thread_system_suspend(thread_ptr); - /* At this point, the preempt disable flag is still set, so we still have + /* At this point, the preempt disable flag is still set, so we still have protection against all preemption. */ /* Setup the new priority for this thread. */ @@ -214,14 +214,14 @@ UINT original_priority; case if the new priority is higher than the priority inheritance. */ if (new_priority < thread_ptr -> tx_thread_inherit_priority) { - + /* Change thread priority to the new user's priority. */ thread_ptr -> tx_thread_priority = new_priority; thread_ptr -> tx_thread_preempt_threshold = new_priority; } else { - + /* Change thread priority to the priority inheritance. */ thread_ptr -> tx_thread_priority = thread_ptr -> tx_thread_inherit_priority; thread_ptr -> tx_thread_preempt_threshold = thread_ptr -> tx_thread_inherit_priority; @@ -236,26 +236,26 @@ UINT original_priority; /* Decrement the preempt disable flag. */ _tx_thread_preempt_disable--; - + /* Pickup the next thread to execute. */ next_execute_ptr = _tx_thread_execute_ptr; /* Determine if this thread is not the next thread to execute. */ if (thread_ptr != next_execute_ptr) { - + /* Make sure the thread is still ready. */ if (thread_ptr -> tx_thread_state == TX_READY) { - + /* Now check and see if this thread has an equal or higher priority. */ if (thread_ptr -> tx_thread_priority <= next_execute_ptr -> tx_thread_priority) { - + /* Now determine if this thread was the previously executing thread. */ if (thread_ptr == execute_ptr) { - + /* Yes, this thread was previously executing before we temporarily suspended and resumed it in order to change the priority. A lower or same priority thread cannot be the next thread to execute in this case since this thread really didn't suspend. Simply reset the execute @@ -265,7 +265,7 @@ UINT original_priority; /* Determine if we moved to a lower priority. If so, move the thread to the front of its priority list. */ if (original_priority < new_priority) { - + /* Ensure that this thread is placed at the front of the priority list. */ _tx_thread_priority_list[thread_ptr -> tx_thread_priority] = thread_ptr; } @@ -273,7 +273,7 @@ UINT original_priority; } } } - + /* Restore interrupts. */ TX_RESTORE |
