diff options
Diffstat (limited to 'ports/win64/vs_2022/src/tx_timer_interrupt.c')
| -rw-r--r-- | ports/win64/vs_2022/src/tx_timer_interrupt.c | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/ports/win64/vs_2022/src/tx_timer_interrupt.c b/ports/win64/vs_2022/src/tx_timer_interrupt.c new file mode 100644 index 00000000..6814334b --- /dev/null +++ b/ports/win64/vs_2022/src/tx_timer_interrupt.c @@ -0,0 +1,151 @@ +/*************************************************************************** + * Copyright (C) 2026 Eclipse ThreadX contributors + * + * This program and the accompanying materials are made available under the + * terms of the MIT License which is available at + * https://opensource.org/licenses/MIT. + * + * AI Disclosure: This file was largely AI-generated by Codex (gpt 5.4). + * The AI-generated portions may be considered public domain (CC0-1.0) + * and not subject to the project's licence. The human contributor has + * reviewed and verified that the code is correct. + * + * SPDX-License-Identifier: MIT and CC0-1.0 + **************************************************************************/ + +/**************************************************************************/ +/**************************************************************************/ +/** */ +/** ThreadX Component */ +/** */ +/** Timer */ +/** */ +/**************************************************************************/ +/**************************************************************************/ + +#define TX_SOURCE_CODE + + +/* Include necessary system files. */ + +#include "tx_api.h" +#include "tx_timer.h" +#include "tx_thread.h" + + +/**************************************************************************/ +/* */ +/* FUNCTION RELEASE */ +/* */ +/* _tx_timer_interrupt Win64/MSVC */ +/* 6.1 */ +/* AUTHOR */ +/* */ +/* William E. Lamie, Microsoft Corporation */ +/* */ +/* DESCRIPTION */ +/* */ +/* This function processes the hardware timer interrupt. This */ +/* processing includes incrementing the system clock and checking for */ +/* time slice and/or timer expiration. If either is found, the */ +/* interrupt context save/restore functions are called along with the */ +/* expiration functions. */ +/* */ +/* INPUT */ +/* */ +/* None */ +/* */ +/* OUTPUT */ +/* */ +/* None */ +/* */ +/* CALLS */ +/* */ +/* _tx_thread_time_slice Time slice interrupted thread */ +/* _tx_timer_expiration_process Timer expiration processing */ +/* _tx_win32_critical_section_obtain Obtain critical section */ +/* _tx_win32_critical_section_release Release critical section */ +/* */ +/* CALLED BY */ +/* */ +/* interrupt vector */ +/* */ +/**************************************************************************/ +VOID _tx_timer_interrupt(VOID) +{ + + + /* Enter critical section to ensure other threads are not playing with + the core ThreadX data structures. */ + _tx_win32_critical_section_obtain(&_tx_win32_critical_section); + + /* Debug entry. */ + _tx_win32_debug_entry_insert("TIMER INTERRUPT", __FILE__, __LINE__); + + /* Increment the system clock. */ + _tx_timer_system_clock++; + + /* Test for time-slice expiration. */ + if (_tx_timer_time_slice) + { + + /* Decrement the time_slice. */ + _tx_timer_time_slice--; + + /* Check for expiration. */ + if (_tx_timer_time_slice == 0) + { + + /* Set the time-slice expired flag. */ + _tx_timer_expired_time_slice = TX_TRUE; + } + } + + /* Test for timer expiration. */ + if (*_tx_timer_current_ptr) + { + + /* Set expiration flag. */ + _tx_timer_expired = TX_TRUE; + } + else + { + + /* No timer expired, increment the timer pointer. */ + _tx_timer_current_ptr++; + + /* Check for wrap-around. */ + if (_tx_timer_current_ptr == _tx_timer_list_end) + { + + /* Wrap to beginning of list. */ + _tx_timer_current_ptr = _tx_timer_list_start; + } + } + + /* See if anything has expired. */ + if ((_tx_timer_expired_time_slice) || (_tx_timer_expired)) + { + + /* Did a timer expire? */ + if (_tx_timer_expired) + { + + /* Process timer expiration. */ + _tx_timer_expiration_process(); + } + + /* Did time slice expire? */ + if (_tx_timer_expired_time_slice) + { + + /* Time slice interrupted thread. */ + _tx_thread_time_slice(); + } + } + + /* Exit Win32 critical section. */ + _tx_win32_critical_section_release(&_tx_win32_critical_section); +} + + |