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wip: census reports the growing region base

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Signed-off-by: Martin Vogel <martin.vogel.tech@gmail.com>
This commit is contained in:
Martin Vogel
2026-07-25 18:34:42 +02:00
parent 80f0c0e9c8
commit 2c95ca441a
2 changed files with 8 additions and 1 deletions
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src/foundation/mem.c
+4 -1
View File
@@ -746,6 +746,7 @@ bool cbm_mem_win_census(cbm_mem_win_census_t *out) {
out->committed_private += mbi.RegionSize;
if (mbi.RegionSize > out->largest_private_region) {
out->largest_private_region = mbi.RegionSize;
out->largest_private_base = mbi.BaseAddress;
}
if (mbi.RegionSize >= (size_t)CBM_SZ_1K * CBM_SZ_1K) {
out->private_regions_1mb++;
@@ -827,6 +828,7 @@ void cbm_mem_census_log(const char *tag) {
char rss_kb[CBM_SZ_32];
char biggest_kb[CBM_SZ_32];
char regions[CBM_SZ_32];
char base[CBM_SZ_32];
char big_regions[CBM_SZ_32];
char heaps[CBM_SZ_32];
(void)snprintf(priv_kb, sizeof(priv_kb), "%zu", census.committed_private / CBM_SZ_1K);
@@ -837,6 +839,7 @@ void cbm_mem_census_log(const char *tag) {
(void)snprintf(biggest_kb, sizeof(biggest_kb), "%zu",
census.largest_private_region / CBM_SZ_1K);
(void)snprintf(regions, sizeof(regions), "%u", census.regions);
(void)snprintf(base, sizeof(base), "%p", census.largest_private_base);
(void)snprintf(big_regions, sizeof(big_regions), "%u", census.private_regions_1mb);
(void)snprintf(heaps, sizeof(heaps), "%u", census.heap_walk_ok ? census.crt_heap_count : 0);
char dc_calls[CBM_SZ_32];
@@ -859,5 +862,5 @@ void cbm_mem_census_log(const char *tag) {
"crt_busy_kb", busy_kb, "mapped_kb", mapped_kb, "rss_kb", rss_kb, "biggest_kb",
biggest_kb, "regions", regions, "big_regions", big_regions, "heaps", heaps,
"decommit_calls", dc_calls, "decommit_fails", dc_fail, "decommit_err", dc_err,
"decommit_mb", dc_mb);
"decommit_mb", dc_mb, "biggest_base", base);
}
src/foundation/mem.h
+4
View File
@@ -238,6 +238,10 @@ typedef struct {
* rather than many leaked blocks — a different bug with a different fix. */
size_t largest_private_region;
unsigned private_regions_1mb;
/* Base of that region: a base that stays put while the size climbs proves
* ONE allocation growing, and lets it be matched against the allocator's
* arena addresses to name the owner. */
void *largest_private_base;
bool heap_walk_ok; /* false → crt_* are unknown, not zero */
} cbm_mem_win_census_t;