126 lines
4.4 KiB
C
126 lines
4.4 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013, 2014 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "py/mpstate.h"
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#include "py/obj.h"
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#include "py/gc.h"
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#if MICROPY_PY_GC && MICROPY_ENABLE_GC
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// collect(): run a garbage collection
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STATIC mp_obj_t py_gc_collect(void) {
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gc_collect();
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#if MICROPY_PY_GC_COLLECT_RETVAL
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return MP_OBJ_NEW_SMALL_INT(MP_STATE_MEM(gc_collected));
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#else
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return mp_const_none;
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#endif
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}
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MP_DEFINE_CONST_FUN_OBJ_0(gc_collect_obj, py_gc_collect);
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// disable(): disable the garbage collector
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STATIC mp_obj_t gc_disable(void) {
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MP_STATE_MEM(gc_auto_collect_enabled) = 0;
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_0(gc_disable_obj, gc_disable);
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// enable(): enable the garbage collector
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STATIC mp_obj_t gc_enable(void) {
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MP_STATE_MEM(gc_auto_collect_enabled) = 1;
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_0(gc_enable_obj, gc_enable);
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STATIC mp_obj_t gc_isenabled(void) {
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return mp_obj_new_bool(MP_STATE_MEM(gc_auto_collect_enabled));
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}
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MP_DEFINE_CONST_FUN_OBJ_0(gc_isenabled_obj, gc_isenabled);
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// mem_free(): return the number of bytes of available heap RAM
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STATIC mp_obj_t gc_mem_free(void) {
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gc_info_t info;
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gc_info(&info);
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#if MICROPY_GC_SPLIT_HEAP_AUTO
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// Include max_new_split value here as a more useful heuristic
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return MP_OBJ_NEW_SMALL_INT(info.free + info.max_new_split);
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#else
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return MP_OBJ_NEW_SMALL_INT(info.free);
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#endif
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}
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MP_DEFINE_CONST_FUN_OBJ_0(gc_mem_free_obj, gc_mem_free);
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// mem_alloc(): return the number of bytes of heap RAM that are allocated
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STATIC mp_obj_t gc_mem_alloc(void) {
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gc_info_t info;
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gc_info(&info);
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return MP_OBJ_NEW_SMALL_INT(info.used);
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}
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MP_DEFINE_CONST_FUN_OBJ_0(gc_mem_alloc_obj, gc_mem_alloc);
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#if MICROPY_GC_ALLOC_THRESHOLD
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STATIC mp_obj_t gc_threshold(size_t n_args, const mp_obj_t *args) {
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if (n_args == 0) {
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if (MP_STATE_MEM(gc_alloc_threshold) == (size_t)-1) {
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return MP_OBJ_NEW_SMALL_INT(-1);
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}
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return mp_obj_new_int(MP_STATE_MEM(gc_alloc_threshold) * MICROPY_BYTES_PER_GC_BLOCK);
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}
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mp_int_t val = mp_obj_get_int(args[0]);
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if (val < 0) {
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MP_STATE_MEM(gc_alloc_threshold) = (size_t)-1;
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} else {
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MP_STATE_MEM(gc_alloc_threshold) = val / MICROPY_BYTES_PER_GC_BLOCK;
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}
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(gc_threshold_obj, 0, 1, gc_threshold);
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#endif
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STATIC const mp_rom_map_elem_t mp_module_gc_globals_table[] = {
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{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_gc) },
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{ MP_ROM_QSTR(MP_QSTR_collect), MP_ROM_PTR(&gc_collect_obj) },
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{ MP_ROM_QSTR(MP_QSTR_disable), MP_ROM_PTR(&gc_disable_obj) },
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{ MP_ROM_QSTR(MP_QSTR_enable), MP_ROM_PTR(&gc_enable_obj) },
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{ MP_ROM_QSTR(MP_QSTR_isenabled), MP_ROM_PTR(&gc_isenabled_obj) },
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{ MP_ROM_QSTR(MP_QSTR_mem_free), MP_ROM_PTR(&gc_mem_free_obj) },
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{ MP_ROM_QSTR(MP_QSTR_mem_alloc), MP_ROM_PTR(&gc_mem_alloc_obj) },
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#if MICROPY_GC_ALLOC_THRESHOLD
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{ MP_ROM_QSTR(MP_QSTR_threshold), MP_ROM_PTR(&gc_threshold_obj) },
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#endif
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};
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STATIC MP_DEFINE_CONST_DICT(mp_module_gc_globals, mp_module_gc_globals_table);
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const mp_obj_module_t mp_module_gc = {
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.base = { &mp_type_module },
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.globals = (mp_obj_dict_t *)&mp_module_gc_globals,
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};
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MP_REGISTER_MODULE(MP_QSTR_gc, mp_module_gc);
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#endif
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