circuitpython/ports/atmel-samd/background.c
Scott Shawcroft 7ad2e6ace3
Add stack validity check and raise an error when it happens.
The backtrace cannot be given because it relies on the validity
of the qstr data structures on the heap which may have been
corrupted.

In fact, it still can crash hard when the bytecode itself is
overwritten. To fix, we'd need a way to skip gathering the
backtrace completely.

This also increases the default stack size on M4s so it can
accomodate the stack needed by ASF4s nvm API.
2018-12-04 23:26:04 -08:00

66 lines
2.1 KiB
C

/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "background.h"
#include "audio_dma.h"
#include "tick.h"
#include "supervisor/usb.h"
#include "py/runtime.h"
#include "shared-module/displayio/__init__.h"
#include "shared-module/network/__init__.h"
#include "supervisor/shared/stack.h"
volatile uint64_t last_finished_tick = 0;
bool stack_ok_so_far = true;
void run_background_tasks(void) {
#if (defined(SAMD21) && defined(PIN_PA02)) || defined(SAMD51)
audio_dma_background();
#endif
#ifdef CIRCUITPY_DISPLAYIO
displayio_refresh_display();
#endif
#if MICROPY_PY_NETWORK
network_module_background();
#endif
usb_background();
last_finished_tick = ticks_ms;
}
void run_background_vm_tasks(void) {
assert_heap_ok();
run_background_tasks();
assert_heap_ok();
}
bool background_tasks_ok(void) {
return ticks_ms - last_finished_tick < 1000;
}