circuitpython/shared-module/atexit/__init__.c

93 lines
3.3 KiB
C

/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2021 microDev
*
* 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 "py/gc.h"
#include "py/runtime.h"
#include "shared-module/atexit/__init__.h"
static size_t callback_len = 0;
static atexit_callback_t *callback = NULL;
void atexit_reset(void) {
callback_len = 0;
m_free(callback);
callback = NULL;
}
void atexit_gc_collect(void) {
gc_collect_ptr(callback);
}
void shared_module_atexit_register(mp_obj_t *func, size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
if (!mp_obj_is_callable(func)) {
mp_raise_TypeError_varg(translate("'%q' object is not callable"), mp_obj_get_type_qstr(func));
}
size_t n_kw_args = (kw_args) ? kw_args->used : 0;
atexit_callback_t cb = {
.n_pos = 0,
.n_kw = 0,
.func = func,
.args = (n_args + n_kw_args) ? m_malloc((n_args + (n_kw_args * 2)) * sizeof(mp_obj_t), false) : NULL
};
for (; cb.n_pos < n_args; cb.n_pos++) {
cb.args[cb.n_pos] = pos_args[cb.n_pos];
}
for (size_t i = cb.n_pos; cb.n_kw < n_kw_args; i++, cb.n_kw++) {
cb.args[i] = kw_args->table[cb.n_kw].key;
cb.args[i += 1] = kw_args->table[cb.n_kw].value;
}
callback = (atexit_callback_t *)m_realloc(callback, (callback_len + 1) * sizeof(cb));
callback[callback_len++] = cb;
}
void shared_module_atexit_unregister(const mp_obj_t *func) {
for (size_t i = 0; i < callback_len; i++) {
if (callback[i].func == *func) {
callback[i].n_pos = 0;
callback[i].n_kw = 0;
callback[i].func = mp_const_none;
callback[i].args = NULL;
}
}
}
void shared_module_atexit_execute(pyexec_result_t *result) {
if (callback) {
for (size_t i = callback_len; i-- > 0;) {
if (callback[i].func != mp_const_none) {
if (result != NULL) {
pyexec_result_t res;
if (pyexec_exit_handler(&callback[i], &res) == PYEXEC_DEEP_SLEEP) {
*result = res;
}
} else {
pyexec_exit_handler(&callback[i], NULL);
}
}
}
}
}