57 lines
1.7 KiB
C
57 lines
1.7 KiB
C
#include <stdio.h>
|
|
|
|
//#include <stm32f4xx_hal.h>
|
|
|
|
#include "misc.h"
|
|
#include "mpconfig.h"
|
|
#include "qstr.h"
|
|
#include "obj.h"
|
|
#include "gc.h"
|
|
#include "gccollect.h"
|
|
|
|
machine_uint_t gc_helper_get_regs_and_sp(machine_uint_t *regs);
|
|
|
|
// obsolete
|
|
// void gc_helper_get_regs_and_clean_stack(machine_uint_t *regs, machine_uint_t heap_end);
|
|
|
|
void gc_collect(void) {
|
|
// get current time, in case we want to time the GC
|
|
uint32_t start = HAL_GetTick();
|
|
|
|
// start the GC
|
|
gc_collect_start();
|
|
|
|
// scan everything in RAM before the heap
|
|
// this includes the data and bss segments
|
|
// TODO possibly don't need to scan data, since all pointers should start out NULL and be in bss
|
|
gc_collect_root((void**)&_ram_start, ((uint32_t)&_ebss - (uint32_t)&_ram_start) / sizeof(uint32_t));
|
|
|
|
// get the registers and the sp
|
|
machine_uint_t regs[10];
|
|
machine_uint_t sp = gc_helper_get_regs_and_sp(regs);
|
|
|
|
// trace the stack, including the registers (since they live on the stack in this function)
|
|
gc_collect_root((void**)sp, ((uint32_t)&_ram_end - sp) / sizeof(uint32_t));
|
|
|
|
// end the GC
|
|
gc_collect_end();
|
|
|
|
if (0) {
|
|
// print GC info
|
|
uint32_t ticks = HAL_GetTick() - start; // TODO implement a function that does this properly
|
|
gc_info_t info;
|
|
gc_info(&info);
|
|
printf("GC@%lu %lums\n", start, ticks);
|
|
printf(" %lu total\n", info.total);
|
|
printf(" %lu : %lu\n", info.used, info.free);
|
|
printf(" 1=%lu 2=%lu m=%lu\n", info.num_1block, info.num_2block, info.max_block);
|
|
}
|
|
}
|
|
|
|
static mp_obj_t pyb_gc(void) {
|
|
gc_collect();
|
|
return mp_const_none;
|
|
}
|
|
|
|
MP_DEFINE_CONST_FUN_OBJ_0(pyb_gc_obj, pyb_gc);
|