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/***************************************************************************
* 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
**************************************************************************/
// Some portions generated by Codex (gpt 5.5).
#define TX_SOURCE_CODE
#define TX_THREAD_SMP_SOURCE_CODE
#include "tx_api.h"
#include "tx_thread.h"
#include "tx_timer.h"
static VOID _tx_win32_thread_cleanup(TX_THREAD *thread_ptr);
VOID _tx_thread_schedule(VOID)
{
UINT core;
UINT pending_work;
TX_THREAD *current_thread;
TX_THREAD *execute_thread;
UCHAR preempt_retry;
DWORD wait_status;
LONG start_sequence;
preempt_retry = TX_FALSE;
while (1)
{
_tx_win32_critical_section_obtain(&_tx_win32_critical_section);
if (_tx_win32_global_int_disabled_flag != TX_FALSE)
{
_tx_win32_system_error++;
}
_tx_win32_debug_entry_insert("SCHEDULE-wake_up", __FILE__, __LINE__);
for (core = 0U; core < TX_THREAD_SMP_MAX_CORES; core++)
{
current_thread = _tx_thread_current_ptr[core];
if ((current_thread != TX_NULL) && (current_thread -> tx_thread_win32_deferred_preempt != TX_FALSE))
{
if (_tx_thread_preempt_disable != 0U)
{
preempt_retry = TX_TRUE;
continue;
}
if (current_thread -> tx_thread_win32_mutex_access != TX_FALSE)
{
preempt_retry = TX_TRUE;
continue;
}
if (current_thread -> tx_thread_state != TX_TERMINATED)
{
_tx_win32_thread_suspend(current_thread -> tx_thread_win32_thread_handle);
current_thread -> tx_thread_win32_deferred_preempt = TX_FALSE;
current_thread -> tx_thread_win32_suspension_type = 1U;
if (_tx_timer_time_slice[core] != 0U)
{
current_thread -> tx_thread_time_slice = _tx_timer_time_slice[core];
_tx_timer_time_slice[core] = 0U;
}
}
_tx_thread_current_ptr[core] = TX_NULL;
_tx_win32_virtual_cores[core].tx_thread_smp_core_mapping_thread = TX_NULL;
_tx_win32_virtual_cores[core].tx_thread_smp_core_mapping_thread_handle = NULL;
_tx_win32_virtual_cores[core].tx_thread_smp_core_mapping_thread_id = 0U;
current_thread -> tx_thread_smp_core_control = 1U;
_tx_win32_debug_entry_insert("SCHEDULE-core_preempt_complete", __FILE__, __LINE__);
}
if (_tx_thread_current_ptr[core] == TX_NULL)
{
execute_thread = _tx_thread_execute_ptr[core];
if ((execute_thread != TX_NULL) && (execute_thread -> tx_thread_smp_core_control != 0U))
{
_tx_thread_current_ptr[core] = execute_thread;
execute_thread -> tx_thread_win32_virtual_core = core;
execute_thread -> tx_thread_smp_core_mapped = core;
_tx_win32_virtual_cores[core].tx_thread_smp_core_mapping_thread = execute_thread;
_tx_win32_virtual_cores[core].tx_thread_smp_core_mapping_thread_handle = execute_thread -> tx_thread_win32_thread_handle;
_tx_win32_virtual_cores[core].tx_thread_smp_core_mapping_thread_id = execute_thread -> tx_thread_win32_thread_id;
execute_thread -> tx_thread_smp_core_control = 0U;
execute_thread -> tx_thread_run_count++;
_tx_timer_time_slice[core] = execute_thread -> tx_thread_time_slice;
MemoryBarrier();
if (execute_thread -> tx_thread_win32_suspension_type == 1U)
{
execute_thread -> tx_thread_win32_suspension_type = 0U;
_tx_win32_debug_entry_insert("SCHEDULE-resume_thread", __FILE__, __LINE__);
_tx_win32_thread_resume(execute_thread -> tx_thread_win32_thread_handle);
}
else if (execute_thread -> tx_thread_win32_suspension_type == 2U)
{
execute_thread -> tx_thread_win32_suspension_type = 0U;
_tx_win32_debug_entry_insert("SCHEDULE-release_sem", __FILE__, __LINE__);
#ifdef TX_WIN32_PROFILE_ENABLE
_tx_win32_profile_mark_run_signal(execute_thread);
#endif
#if (TX_WIN32_USE_ADDRESS_WAIT == 0)
_tx_win32_semaphore_reset(execute_thread -> tx_thread_win32_thread_start_semaphore);
_tx_win32_semaphore_reset(execute_thread -> tx_thread_win32_thread_run_semaphore);
#endif
start_sequence = _tx_win32_thread_start_sequence_get(execute_thread);
_tx_win32_thread_run_signal(execute_thread);
/* Wait for the execute_thread to signal start_ack before proceeding.
* Holding the CS here means any thread that calls TX_DISABLE will
* spin with mutex_access=TRUE and preempt_disable≠0, creating the
* window the ISR needs to observe preempt_disable!=0 for resonance
* tests such as wait_abort_and_isr. */
wait_status = _tx_win32_wait_for_thread_start_ack(execute_thread, start_sequence);
if (wait_status != WAIT_OBJECT_0)
{
_tx_win32_system_error++;
}
}
else
{
_tx_win32_system_error++;
}
}
}
}
/* Signal context_restore's rendezvous wait now that all execute_threads have
* been resumed and their start_ack received. */
if (_tx_win32_timer_waiting != 0U)
{
ReleaseSemaphore(_tx_win32_isr_semaphore, 1, NULL);
}
if (preempt_retry != TX_FALSE)
{
_tx_win32_critical_section_release_all(&_tx_win32_critical_section);
_tx_win32_thread_yield();
preempt_retry = TX_FALSE;
continue;
}
_tx_win32_debug_entry_insert("SCHEDULE-self_suspend_sem", __FILE__, __LINE__);
pending_work = TX_FALSE;
for (core = 0U; core < TX_THREAD_SMP_MAX_CORES; core++)
{
current_thread = _tx_thread_current_ptr[core];
execute_thread = _tx_thread_execute_ptr[core];
if ((current_thread != TX_NULL) && (current_thread -> tx_thread_win32_deferred_preempt != TX_FALSE))
{
pending_work = TX_TRUE;
break;
}
if ((_tx_thread_current_ptr[core] == TX_NULL) &&
(execute_thread != TX_NULL) &&
(execute_thread -> tx_thread_smp_core_control != 0U))
{
pending_work = TX_TRUE;
break;
}
}
_tx_win32_critical_section_release_all(&_tx_win32_critical_section);
if (pending_work != TX_FALSE)
{
continue;
}
/* Coalesce stale wakeups so the scheduler yields to worker threads
until there is a new ready-state transition to process. */
(void) _tx_win32_wait_for_scheduler_event();
}
}
static VOID _tx_win32_thread_cleanup(TX_THREAD *thread_ptr)
{
DWORD exit_code;
ULONG wait_count;
if (thread_ptr -> tx_thread_win32_thread_handle != NULL)
{
wait_count = 0U;
do
{
if ((GetExitCodeThread(thread_ptr -> tx_thread_win32_thread_handle, &exit_code) != 0) &&
(exit_code != STILL_ACTIVE))
{
break;
}
_tx_win32_thread_resume(thread_ptr -> tx_thread_win32_thread_handle);
_tx_win32_thread_run_signal(thread_ptr);
_tx_win32_thread_sleep(1U);
wait_count++;
} while (wait_count < 100U);
if ((GetExitCodeThread(thread_ptr -> tx_thread_win32_thread_handle, &exit_code) != 0) &&
(exit_code == STILL_ACTIVE))
{
(void) TerminateThread(thread_ptr -> tx_thread_win32_thread_handle, 0U);
(void) WaitForSingleObject(thread_ptr -> tx_thread_win32_thread_handle, INFINITE);
}
CloseHandle(thread_ptr -> tx_thread_win32_thread_handle);
thread_ptr -> tx_thread_win32_thread_handle = NULL;
}
if (thread_ptr -> tx_thread_win32_thread_run_semaphore != NULL)
{
CloseHandle(thread_ptr -> tx_thread_win32_thread_run_semaphore);
thread_ptr -> tx_thread_win32_thread_run_semaphore = NULL;
}
if (thread_ptr -> tx_thread_win32_thread_start_semaphore != NULL)
{
CloseHandle(thread_ptr -> tx_thread_win32_thread_start_semaphore);
thread_ptr -> tx_thread_win32_thread_start_semaphore = NULL;
}
}
void _tx_thread_delete_port_completion(TX_THREAD *thread_ptr, UINT tx_interrupt_save)
{
_tx_thread_smp_unprotect(tx_interrupt_save);
_tx_win32_thread_cleanup(thread_ptr);
tx_interrupt_save = _tx_thread_smp_protect();
TX_PARAMETER_NOT_USED(tx_interrupt_save);
}
void _tx_thread_reset_port_completion(TX_THREAD *thread_ptr, UINT tx_interrupt_save)
{
_tx_thread_delete_port_completion(thread_ptr, tx_interrupt_save);
}
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