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py/gc: Calculate (and report) maximum contiguous free block size.

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Just as maximum allocated block size, it's reported in allocation units
(not bytes).
This commit is contained in:
Paul Sokolovsky 2016-07-01 00:09:55 +03:00
parent 35962eaab0
commit 749cbaca7f
2 changed files with 12 additions and 3 deletions
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14
py/gc.c
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@ -324,15 +324,17 @@ void gc_info(gc_info_t *info) {
info->total = MP_STATE_MEM(gc_pool_end) - MP_STATE_MEM(gc_pool_start);
info->used = 0;
info->free = 0;
info->max_free = 0;
info->num_1block = 0;
info->num_2block = 0;
info->max_block = 0;
bool finish = false;
for (size_t block = 0, len = 0; !finish;) {
for (size_t block = 0, len = 0, len_free = 0; !finish;) {
size_t kind = ATB_GET_KIND(block);
switch (kind) {
case AT_FREE:
info->free += 1;
len_free += 1;
len = 0;
break;
@ -367,6 +369,12 @@ void gc_info(gc_info_t *info) {
if (len > info->max_block) {
info->max_block = len;
}
if (finish || kind == AT_HEAD) {
if (len_free > info->max_free) {
info->max_free = len_free;
}
len_free = 0;
}
}
}
@ -726,8 +734,8 @@ void gc_dump_info(void) {
gc_info(&info);
mp_printf(&mp_plat_print, "GC: total: %u, used: %u, free: %u\n",
(uint)info.total, (uint)info.used, (uint)info.free);
mp_printf(&mp_plat_print, " No. of 1-blocks: %u, 2-blocks: %u, max blk sz: %u\n",
(uint)info.num_1block, (uint)info.num_2block, (uint)info.max_block);
mp_printf(&mp_plat_print, " No. of 1-blocks: %u, 2-blocks: %u, max blk sz: %u, max free sz: %u\n",
(uint)info.num_1block, (uint)info.num_2block, (uint)info.max_block, (uint)info.max_free);
}
void gc_dump_alloc_table(void) {

1
py/gc.h
View File

@ -54,6 +54,7 @@ typedef struct _gc_info_t {
size_t total;
size_t used;
size_t free;
size_t max_free;
size_t num_1block;
size_t num_2block;
size_t max_block;