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ur: adds ur_hcon_info() to print memory measurements

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This commit is contained in:
Joe Bryan 2020-07-30 14:42:16 -07:00
parent 9b2a267c1d
commit 87b10abee4
2 changed files with 104 additions and 0 deletions
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3
pkg/urbit/include/ur/hashcons.h
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@ -97,6 +97,9 @@ ur_coin64(ur_root_t *r, uint64_t n);
ur_nref
ur_cons(ur_root_t *r, ur_nref hed, ur_nref tal);
void
ur_hcon_info(FILE *f, ur_root_t *r);
ur_root_t*
ur_hcon_init(void);

101
pkg/urbit/ur/hashcons.c
View File

@ -367,6 +367,107 @@ ur_cons(ur_root_t *r, ur_nref hed, ur_nref tal)
}
}
static void
_print_memory(FILE *f, const char *c, uint64_t bytes)
{
if ( !bytes ) {
fprintf(f, "%s: B/0\r\n", c);
}
else {
uint32_t g = (bytes / 1000000000);
uint32_t m = (bytes % 1000000000) / 1000000;
uint32_t k = (bytes % 1000000) / 1000;
uint32_t b = (bytes % 1000);
if ( g ) {
fprintf(f, "%s: GB/%d.%03d.%03d.%03d\r\n", c, g, m, k, b);
}
else if ( m ) {
fprintf(f, "%s: MB/%d.%03d.%03d\r\n", c, m, k, b);
}
else if ( k ) {
fprintf(f, "%s: KB/%d.%03d\r\n", c, k, b);
}
else if ( b ) {
fprintf(f, "%s: B/%d\r\n", c, b);
}
}
}
static uint64_t
_dict_info(FILE *f, ur_dict_t *dict)
{
uint64_t data = dict->size * sizeof(*dict->buckets);
_print_memory(f, " dict", data);
return data;
}
static uint64_t
_atoms_info(FILE *f, ur_atoms_t *atoms)
{
uint64_t total = 0;
uint64_t size = atoms->size;
uint64_t fill = atoms->fill;
uint64_t refs = size * ( sizeof(*atoms->bytes)
+ sizeof(*atoms->lens)
+ sizeof(*atoms->mugs) );
uint64_t i, data = 0;
fprintf(f, " atoms (%" PRIu64 "):\r\n", fill);
_print_memory(f, " refs", refs);
total += refs;
for ( i = 0; i < fill; i++ ) {
data += atoms->lens[i];
}
_print_memory(f, " data", data);
total += data;
total += _dict_info(f, &(atoms->dict));
_print_memory(f, " total", total);
return total;
}
static uint64_t
_cells_info(FILE *f, ur_cells_t *cells)
{
uint64_t total = 0;
uint64_t size = cells->size;
uint64_t fill = cells->fill;
uint64_t refs = size * ( sizeof(*cells->heads)
+ sizeof(*cells->heads)
+ sizeof(*cells->mugs) );
fprintf(f, " cells (%" PRIu64 "):\r\n", fill);
_print_memory(f, " refs", refs);
total += refs;
total += _dict_info(f, &(cells->dict));
_print_memory(f, " total", total);
return total;
}
void
ur_hcon_info(FILE *f, ur_root_t *r)
{
uint64_t total = 0;
fprintf(stderr, "hash-cons arena:\r\n");
{
uint64_t root = sizeof(*r);
_print_memory(f, " root", root);
total += root;
}
total += _atoms_info(f, &(r->atoms));
total += _cells_info(f, &(r->cells));
_print_memory(f, "total", total);
}
ur_root_t*
ur_hcon_init(void)
{