fa1ea21f75
Otherwise the compiler may inline the gc_collect_inner() function and/or remove the recursion, which is necessary to spill all the windowed registers to the C stack. Signed-off-by: Damien George <damien@micropython.org>
88 lines
2.8 KiB
C
88 lines
2.8 KiB
C
/*
|
|
* This file is part of the MicroPython project, http://micropython.org/
|
|
*
|
|
* Development of the code in this file was sponsored by Microbric Pty Ltd
|
|
*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2014 Damien P. George
|
|
* Copyright (c) 2017 Pycom Limited
|
|
*
|
|
* 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 <stdio.h>
|
|
|
|
#include "py/mpconfig.h"
|
|
#include "py/mpstate.h"
|
|
#include "py/gc.h"
|
|
#include "py/mpthread.h"
|
|
#include "gccollect.h"
|
|
|
|
#if CONFIG_IDF_TARGET_ESP32 || CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3
|
|
|
|
#include "xtensa/hal.h"
|
|
|
|
// The level argument must be volatile to force the compiler to emit code that
|
|
// will call this function recursively, to nest the C stack.
|
|
static void gc_collect_inner(volatile unsigned int level) {
|
|
if (level < XCHAL_NUM_AREGS / 8) {
|
|
// Go deeper on the stack to spill more registers from the register window.
|
|
gc_collect_inner(level + 1);
|
|
} else {
|
|
// Deep enough so that all registers are on the C stack, now trace the stack.
|
|
volatile uint32_t sp = (uint32_t)esp_cpu_get_sp();
|
|
gc_collect_root((void **)sp, ((mp_uint_t)MP_STATE_THREAD(stack_top) - sp) / sizeof(uint32_t));
|
|
}
|
|
}
|
|
|
|
void gc_collect(void) {
|
|
gc_collect_start();
|
|
gc_collect_inner(0);
|
|
#if MICROPY_PY_THREAD
|
|
mp_thread_gc_others();
|
|
#endif
|
|
gc_collect_end();
|
|
}
|
|
|
|
#elif CONFIG_IDF_TARGET_ESP32C3
|
|
|
|
#include "shared/runtime/gchelper.h"
|
|
|
|
void gc_collect(void) {
|
|
gc_collect_start();
|
|
gc_helper_collect_regs_and_stack();
|
|
#if MICROPY_PY_THREAD
|
|
mp_thread_gc_others();
|
|
#endif
|
|
gc_collect_end();
|
|
}
|
|
|
|
#endif
|
|
|
|
#if MICROPY_GC_SPLIT_HEAP_AUTO
|
|
|
|
// The largest new region that is available to become Python heap is the largest
|
|
// free block in the ESP-IDF system heap.
|
|
size_t gc_get_max_new_split(void) {
|
|
return heap_caps_get_largest_free_block(MALLOC_CAP_DEFAULT);
|
|
}
|
|
|
|
#endif
|