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moduerrno.c

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  • modgc.c 3.56 KiB
    /*
     * This file is part of the Micro Python project, http://micropython.org/
     *
     * The MIT License (MIT)
     *
     * 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
    
    /// \module gc - control the garbage collector
    
    extern uint gc_collected;
    
    /// \function 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);
    
    /// \function 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);
    
    /// \function 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_BOOL(MP_STATE_MEM(gc_auto_collect_enabled));
    }
    MP_DEFINE_CONST_FUN_OBJ_0(gc_isenabled_obj, gc_isenabled);
    
    /// \function 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);
    
    /// \function 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);
    
    STATIC const mp_map_elem_t mp_module_gc_globals_table[] = {
        { MP_OBJ_NEW_QSTR(MP_QSTR___name__), MP_OBJ_NEW_QSTR(MP_QSTR_gc) },
        { MP_OBJ_NEW_QSTR(MP_QSTR_collect), (mp_obj_t)&gc_collect_obj },
        { MP_OBJ_NEW_QSTR(MP_QSTR_disable), (mp_obj_t)&gc_disable_obj },
        { MP_OBJ_NEW_QSTR(MP_QSTR_enable), (mp_obj_t)&gc_enable_obj },
        { MP_OBJ_NEW_QSTR(MP_QSTR_isenabled), (mp_obj_t)&gc_isenabled_obj },
        { MP_OBJ_NEW_QSTR(MP_QSTR_mem_free), (mp_obj_t)&gc_mem_free_obj },
        { MP_OBJ_NEW_QSTR(MP_QSTR_mem_alloc), (mp_obj_t)&gc_mem_alloc_obj },
    };
    
    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 },
        .name = MP_QSTR_gc,
        .globals = (mp_obj_dict_t*)&mp_module_gc_globals,
    };
    
    #endif