56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
#include <stdio.h>
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#include "misc.h"
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#include "mpconfig.h"
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#include "qstr.h"
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#include "obj.h"
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#include "gc.h"
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#include "gccollect.h"
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#include "systick.h"
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machine_uint_t gc_helper_get_regs_and_sp(machine_uint_t *regs);
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// obsolete
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// void gc_helper_get_regs_and_clean_stack(machine_uint_t *regs, machine_uint_t heap_end);
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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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uint32_t start = sys_tick_counter;
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// start the GC
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gc_collect_start();
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// scan everything in RAM before the heap
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// this includes the data and bss segments
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// TODO possibly don't need to scan data, since all pointers should start out NULL and be in bss
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gc_collect_root((void**)&_ram_start, ((uint32_t)&_bss_end - (uint32_t)&_ram_start) / sizeof(uint32_t));
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// get the registers and the sp
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machine_uint_t regs[10];
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machine_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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gc_collect_root((void**)sp, ((uint32_t)&_ram_end - sp) / sizeof(uint32_t));
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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 = sys_tick_counter - start; // TODO implement a function that does this properly
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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(" %lu total\n", info.total);
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printf(" %lu : %lu\n", info.used, info.free);
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printf(" 1=%lu 2=%lu m=%lu\n", info.num_1block, info.num_2block, info.max_block);
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}
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}
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static mp_obj_t pyb_gc(void) {
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gc_collect();
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return mp_const_none;
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}
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MP_DEFINE_CONST_FUN_OBJ_0(pyb_gc_obj, pyb_gc);
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