MIRROR: javascript for 🐜's, a tiny runtime with big ambitions
generation counter for interned property cache invalidation
+14
-11
+14
-11
src/ant.c
+14
-11
src/ant.c
···
40
40
#include <sys/time.h>
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#include <sys/stat.h>
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#include <sys/resource.h>
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-
#include <execinfo.h>
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#endif
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45
#include "modules/fs.h"
···
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const char *intern_ptr;
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jsoff_t prop_off;
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jsoff_t tail;
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+
uint64_t generation;
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} intern_prop_cache_entry_t;
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+
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+
static uint64_t intern_prop_cache_gen = 1;
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static intern_prop_cache_entry_t intern_prop_cache[ANT_LIMIT_SIZE_CACHE];
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typedef struct promise_handler {
···
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uint32_t cache_slot = (((uintptr_t)interned >> 3) ^ obj_off) & (ANT_LIMIT_SIZE_CACHE - 1);
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intern_prop_cache_entry_t *ce = &intern_prop_cache[cache_slot];
3174
-
3175
-
if (ce->obj_off == obj_off && ce->intern_ptr == interned) {
3176
-
ce->obj_off = 0; ce->intern_ptr = NULL;
3177
-
ce->prop_off = 0; ce->tail = 0;
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-
}
3176
+
if (ce->obj_off == obj_off && ce->intern_ptr == interned) ce->generation = 0;
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}
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static jsval_t mkprop(struct js *js, jsval_t obj, jsval_t k, jsval_t v, jsoff_t flags) {
···
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5224
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5225
static inline jsoff_t lkp_interned(struct js *js, jsval_t obj, const char *search_intern, size_t len) {
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jsoff_t obj_off = (jsoff_t)vdata(obj);
5229
-
jsoff_t first_prop = loadoff(js, obj_off) & ~(3U | FLAGMASK);
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5227
jsoff_t tail = loadoff(js, obj_off + sizeof(jsoff_t) * 2);
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uint32_t slot = (((uintptr_t)search_intern >> 3) ^ obj_off) & (ANT_LIMIT_SIZE_CACHE - 1);
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5230
intern_prop_cache_entry_t *ce = &intern_prop_cache[slot];
5234
-
if (ce->obj_off == obj_off && ce->intern_ptr == search_intern && ce->tail == tail) return ce->prop_off;
5235
5231
5236
-
jsoff_t off = first_prop;
5237
-
jsoff_t result = 0;
5232
+
if (ce->generation == intern_prop_cache_gen
5233
+
&& ce->obj_off == obj_off
5234
+
&& ce->intern_ptr == search_intern
5235
+
&& ce->tail == tail
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+
) return ce->prop_off;
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+
5238
+
jsoff_t first_prop = loadoff(js, obj_off) & ~(3U | FLAGMASK);
5239
+
jsoff_t off = first_prop; jsoff_t result = 0;
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while (off < js->brk && off != 0) {
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jsoff_t header = loadoff(js, off);
···
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off = next_prop(header);
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}
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+
ce->generation = intern_prop_cache_gen;
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ce->obj_off = obj_off;
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ce->intern_ptr = search_intern;
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ce->prop_off = result;
···
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22891
HASH_ADD(hh, new_desc_registry, key, sizeof(uint64_t), desc);
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}
22890
22893
22891
-
memset(intern_prop_cache, 0, sizeof(intern_prop_cache));
22894
+
intern_prop_cache_gen++;
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collections_gc_update_roots(gc_weak_off_cb, gc_update_val_cb, &cb_ctx);
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#undef FWD_OFF