78 lines
2.6 KiB
C
78 lines
2.6 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 <stdio.h>
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#include <stdint.h>
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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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#include "py/mpthread.h"
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#include "gccollect.h"
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#include "systick.h"
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mp_uint_t gc_helper_get_regs_and_sp(mp_uint_t *regs);
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void gc_collect(void) {
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// get current time, in case we want to time the GC
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#if 0
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uint32_t start = mp_hal_ticks_us();
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#endif
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// start the GC
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gc_collect_start();
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// get the registers and the sp
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mp_uint_t regs[10];
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mp_uint_t sp = gc_helper_get_regs_and_sp(regs);
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// trace the stack, including the registers (since they live on the stack in this function)
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#if MICROPY_PY_THREAD
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gc_collect_root((void**)sp, ((uint32_t)MP_STATE_THREAD(stack_top) - sp) / sizeof(uint32_t));
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#else
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gc_collect_root((void**)sp, ((uint32_t)&_ram_end - sp) / sizeof(uint32_t));
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#endif
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// trace root pointers from any threads
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#if MICROPY_PY_THREAD
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mp_thread_gc_others();
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#endif
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// end the GC
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gc_collect_end();
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#if 0
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// print GC info
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uint32_t ticks = mp_hal_ticks_us() - start;
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gc_info_t info;
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gc_info(&info);
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printf("GC@%lu %lums\n", start, ticks);
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printf(" " UINT_FMT " total\n", info.total);
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printf(" " UINT_FMT " : " UINT_FMT "\n", info.used, info.free);
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printf(" 1=" UINT_FMT " 2=" UINT_FMT " m=" UINT_FMT "\n", info.num_1block, info.num_2block, info.max_block);
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#endif
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}
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