circuitpython/shared-bindings/memorymonitor/__init__.c

/*
 * This file is part of the MicroPython project, http://micropython.org/
 *
 * The MIT License (MIT)
 *
 * Copyright (c) 2020 Scott Shawcroft
 *
 * 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 <stdint.h>

#include "py/obj.h"
#include "py/runtime.h"

#include "shared-bindings/memorymonitor/__init__.h"
#include "shared-bindings/memorymonitor/AllocationAlarm.h"
#include "shared-bindings/memorymonitor/AllocationSize.h"

//| """Memory monitoring helpers"""
//|

//| class AllocationError(Exception):
//|     """Catchall exception for allocation related errors."""
//|
//|     ...
//|
MP_DEFINE_MEMORYMONITOR_EXCEPTION(AllocationError, Exception)

NORETURN void mp_raise_memorymonitor_AllocationError(mp_rom_error_text_t fmt, ...) {
    va_list argptr;
    va_start(argptr, fmt);
    mp_obj_t exception = mp_obj_new_exception_msg_vlist(&mp_type_memorymonitor_AllocationError, fmt, argptr);
    va_end(argptr);
    nlr_raise(exception);
}

STATIC const mp_rom_map_elem_t memorymonitor_module_globals_table[] = {
    { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_memorymonitor) },
    { MP_ROM_QSTR(MP_QSTR_AllocationAlarm), MP_ROM_PTR(&memorymonitor_allocationalarm_type) },
    { MP_ROM_QSTR(MP_QSTR_AllocationSize), MP_ROM_PTR(&memorymonitor_allocationsize_type) },

    // Errors
    { MP_ROM_QSTR(MP_QSTR_AllocationError),      MP_ROM_PTR(&mp_type_memorymonitor_AllocationError) },
};

STATIC MP_DEFINE_CONST_DICT(memorymonitor_module_globals, memorymonitor_module_globals_table);

void memorymonitor_exception_print(const mp_print_t *print, mp_obj_t o_in, mp_print_kind_t kind) {
    mp_print_kind_t k = kind & ~PRINT_EXC_SUBCLASS;
    bool is_subclass = kind & PRINT_EXC_SUBCLASS;
    if (!is_subclass && (k == PRINT_EXC)) {
        mp_print_str(print, qstr_str(MP_OBJ_QSTR_VALUE(memorymonitor_module_globals_table[0].value)));
        mp_print_str(print, ".");
    }
    mp_obj_exception_print(print, o_in, kind);
}

const mp_obj_module_t memorymonitor_module = {
    .base = { &mp_type_module },
    .globals = (mp_obj_dict_t *)&memorymonitor_module_globals,
};

MP_REGISTER_MODULE(MP_QSTR_memorymonitor, memorymonitor_module);