diff options
| author | PProvost <[email protected]> | 2020-05-11 08:55:07 -0600 |
|---|---|---|
| committer | PProvost <[email protected]> | 2020-05-11 08:55:07 -0600 |
| commit | 852421fda03a7722d7adb45b187235cd66fa264e (patch) | |
| tree | b117e1339a047347a3d7ebf3eeb1891168cc9b9b /common/src/tx_thread_time_slice_change.c | |
Initial commit
Diffstat (limited to 'common/src/tx_thread_time_slice_change.c')
| -rw-r--r-- | common/src/tx_thread_time_slice_change.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/common/src/tx_thread_time_slice_change.c b/common/src/tx_thread_time_slice_change.c new file mode 100644 index 00000000..19ca83fc --- /dev/null +++ b/common/src/tx_thread_time_slice_change.c @@ -0,0 +1,117 @@ +/**************************************************************************/ +/* */ +/* Copyright (c) Microsoft Corporation. All rights reserved. */ +/* */ +/* This software is licensed under the Microsoft Software License */ +/* Terms for Microsoft Azure RTOS. Full text of the license can be */ +/* found in the LICENSE file at https://aka.ms/AzureRTOS_EULA */ +/* and in the root directory of this software. */ +/* */ +/**************************************************************************/ + + +/**************************************************************************/ +/**************************************************************************/ +/** */ +/** ThreadX Component */ +/** */ +/** Thread */ +/** */ +/**************************************************************************/ +/**************************************************************************/ + +#define TX_SOURCE_CODE + + +/* Include necessary system files. */ + +#include "tx_api.h" +#include "tx_trace.h" +#include "tx_thread.h" +#include "tx_timer.h" + + +/**************************************************************************/ +/* */ +/* FUNCTION RELEASE */ +/* */ +/* _tx_thread_time_slice_change PORTABLE C */ +/* 6.0 */ +/* AUTHOR */ +/* */ +/* William E. Lamie, Microsoft Corporation */ +/* */ +/* DESCRIPTION */ +/* */ +/* This function processes thread time slice change requests. The */ +/* previous time slice is returned to the caller. If the new request */ +/* is made for an executing thread, it is also placed in the actual */ +/* time-slice countdown variable. */ +/* */ +/* INPUT */ +/* */ +/* thread_ptr Pointer to thread */ +/* new_time_slice New time slice */ +/* old_time_slice Old time slice */ +/* */ +/* OUTPUT */ +/* */ +/* status Service return status */ +/* */ +/* CALLS */ +/* */ +/* None */ +/* */ +/* CALLED BY */ +/* */ +/* Application Code */ +/* */ +/* RELEASE HISTORY */ +/* */ +/* DATE NAME DESCRIPTION */ +/* */ +/* 05-19-2020 William E. Lamie Initial Version 6.0 */ +/* */ +/**************************************************************************/ +UINT _tx_thread_time_slice_change(TX_THREAD *thread_ptr, ULONG new_time_slice, ULONG *old_time_slice) +{ + +TX_INTERRUPT_SAVE_AREA + +TX_THREAD *current_thread; + + + /* Lockout interrupts while the thread is being resumed. */ + TX_DISABLE + + /* If trace is enabled, insert this event into the trace buffer. */ + TX_TRACE_IN_LINE_INSERT(TX_TRACE_THREAD_TIME_SLICE_CHANGE, thread_ptr, new_time_slice, thread_ptr -> tx_thread_new_time_slice, 0, TX_TRACE_THREAD_EVENTS) + + /* Log this kernel call. */ + TX_EL_THREAD_TIME_SLICE_CHANGE_INSERT + + /* Return the old time slice. */ + *old_time_slice = thread_ptr -> tx_thread_new_time_slice; + + /* Setup the new time-slice. */ + thread_ptr -> tx_thread_time_slice = new_time_slice; + thread_ptr -> tx_thread_new_time_slice = new_time_slice; + + /* Pickup thread pointer. */ + TX_THREAD_GET_CURRENT(current_thread) + + /* Determine if this thread is the currently executing thread. */ + if (thread_ptr == current_thread) + { + + /* Yes, update the time-slice countdown variable. */ + _tx_timer_time_slice = new_time_slice; + } + + /* Restore interrupts. */ + TX_RESTORE + + /* Return completion status. */ + return(TX_SUCCESS); +} + |