add circuitpython code

1 files changed, 118 insertions, 0 deletions

diff --git a/circuitpython/py/modgc.c b/circuitpython/py/modgc.c
new file mode 100644
index 0000000..e655cfa
--- /dev/null
+++ b/circuitpython/py/modgc.c
@@ -0,0 +1,118 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * SPDX-FileCopyrightText: Copyright (c) 2013, 2014 Damien P. George
+ *
+ * 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/mpstate.h"
+#include "py/obj.h"
+#include "py/gc.h"
+
+#if MICROPY_PY_GC && MICROPY_ENABLE_GC
+
+// collect(): run a garbage collection
+STATIC mp_obj_t py_gc_collect(void) {
+    gc_collect();
+    #if MICROPY_PY_GC_COLLECT_RETVAL
+    return MP_OBJ_NEW_SMALL_INT(MP_STATE_MEM(gc_collected));
+    #else
+    return mp_const_none;
+    #endif
+}
+MP_DEFINE_CONST_FUN_OBJ_0(gc_collect_obj, py_gc_collect);
+
+// disable(): disable the garbage collector
+STATIC mp_obj_t gc_disable(void) {
+    MP_STATE_MEM(gc_auto_collect_enabled) = 0;
+    return mp_const_none;
+}
+MP_DEFINE_CONST_FUN_OBJ_0(gc_disable_obj, gc_disable);
+
+// enable(): enable the garbage collector
+STATIC mp_obj_t gc_enable(void) {
+    MP_STATE_MEM(gc_auto_collect_enabled) = 1;
+    return mp_const_none;
+}
+MP_DEFINE_CONST_FUN_OBJ_0(gc_enable_obj, gc_enable);
+
+STATIC mp_obj_t gc_isenabled(void) {
+    return mp_obj_new_bool(MP_STATE_MEM(gc_auto_collect_enabled));
+}
+MP_DEFINE_CONST_FUN_OBJ_0(gc_isenabled_obj, gc_isenabled);
+
+// mem_free(): return the number of bytes of available heap RAM
+STATIC mp_obj_t gc_mem_free(void) {
+    gc_info_t info;
+    gc_info(&info);
+    return MP_OBJ_NEW_SMALL_INT(info.free);
+}
+MP_DEFINE_CONST_FUN_OBJ_0(gc_mem_free_obj, gc_mem_free);
+
+// mem_alloc(): return the number of bytes of heap RAM that are allocated
+STATIC mp_obj_t gc_mem_alloc(void) {
+    gc_info_t info;
+    gc_info(&info);
+    return MP_OBJ_NEW_SMALL_INT(info.used);
+}
+MP_DEFINE_CONST_FUN_OBJ_0(gc_mem_alloc_obj, gc_mem_alloc);
+
+#if MICROPY_GC_ALLOC_THRESHOLD
+STATIC mp_obj_t gc_threshold(size_t n_args, const mp_obj_t *args) {
+    if (n_args == 0) {
+        if (MP_STATE_MEM(gc_alloc_threshold) == (size_t)-1) {
+            return MP_OBJ_NEW_SMALL_INT(-1);
+        }
+        return mp_obj_new_int(MP_STATE_MEM(gc_alloc_threshold) * MICROPY_BYTES_PER_GC_BLOCK);
+    }
+    mp_int_t val = mp_obj_get_int(args[0]);
+    if (val < 0) {
+        MP_STATE_MEM(gc_alloc_threshold) = (size_t)-1;
+    } else {
+        MP_STATE_MEM(gc_alloc_threshold) = val / MICROPY_BYTES_PER_GC_BLOCK;
+    }
+    return mp_const_none;
+}
+MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(gc_threshold_obj, 0, 1, gc_threshold);
+#endif
+
+STATIC const mp_rom_map_elem_t mp_module_gc_globals_table[] = {
+    { MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_gc) },
+    { MP_ROM_QSTR(MP_QSTR_collect), MP_ROM_PTR(&gc_collect_obj) },
+    { MP_ROM_QSTR(MP_QSTR_disable), MP_ROM_PTR(&gc_disable_obj) },
+    { MP_ROM_QSTR(MP_QSTR_enable), MP_ROM_PTR(&gc_enable_obj) },
+    { MP_ROM_QSTR(MP_QSTR_isenabled), MP_ROM_PTR(&gc_isenabled_obj) },
+    { MP_ROM_QSTR(MP_QSTR_mem_free), MP_ROM_PTR(&gc_mem_free_obj) },
+    { MP_ROM_QSTR(MP_QSTR_mem_alloc), MP_ROM_PTR(&gc_mem_alloc_obj) },
+    #if MICROPY_GC_ALLOC_THRESHOLD
+    { MP_ROM_QSTR(MP_QSTR_threshold), MP_ROM_PTR(&gc_threshold_obj) },
+    #endif
+};
+
+STATIC MP_DEFINE_CONST_DICT(mp_module_gc_globals, mp_module_gc_globals_table);
+
+const mp_obj_module_t mp_module_gc = {
+    .base = { &mp_type_module },
+    .globals = (mp_obj_dict_t *)&mp_module_gc_globals,
+};
+
+#endif