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faster gc

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This commit is contained in:
John Alanbrook
2026-02-14 16:46:11 -06:00
parent e75596ce30
commit 5fe05c60d3
13 changed files with 7566 additions and 7521 deletions
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246
boot/bootstrap.cm.mcode
View File

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boot/engine.cm.mcode
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boot/fold.cm.mcode
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boot/mcode.cm.mcode
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boot/parse.cm.mcode
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boot/qbe.cm.mcode
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boot/qbe_emit.cm.mcode
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boot/seed_bootstrap.cm.mcode
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15,
5,
98,
140,
43
@@ -5421,7 +5421,7 @@
[
"push",
103,
15,
5,
141,
6
],
@@ -5499,7 +5499,7 @@
"setarg",
106,
1,
15,
5,
141,
6
],
@@ -5529,14 +5529,14 @@
[
"add",
109,
14,
15,
108,
142,
25
],
[
"move",
15,
5,
109,
142,
25
@@ -5578,7 +5578,7 @@
[
"push",
114,
15,
5,
143,
8
],
@@ -5656,7 +5656,7 @@
"setarg",
117,
1,
15,
5,
143,
8
],
@@ -5706,7 +5706,7 @@
"add",
122,
121,
14,
15,
144,
35
],
@@ -5727,7 +5727,7 @@
],
[
"move",
15,
5,
124,
144,
45
@@ -5785,7 +5785,7 @@
[
"push",
129,
15,
5,
146,
6
],
@@ -5863,7 +5863,7 @@
"setarg",
132,
1,
15,
5,
146,
6
],
@@ -5894,7 +5894,7 @@
"add",
135,
134,
14,
15,
147,
39
],
@@ -6011,7 +6011,7 @@
[
"push",
146,
15,
5,
151,
15
],
@@ -6089,7 +6089,7 @@
"setarg",
149,
1,
15,
5,
151,
15
],
@@ -6151,7 +6151,7 @@
],
[
"move",
4,
10,
150,
151,
10
@@ -6159,7 +6159,7 @@
[
"frame",
155,
7,
11,
2,
152,
7
@@ -6182,7 +6182,7 @@
"setarg",
155,
1,
4,
10,
152,
7
],
@@ -6190,7 +6190,7 @@
"setarg",
155,
2,
15,
5,
152,
7
],
@@ -6203,7 +6203,7 @@
],
[
"move",
19,
17,
154,
152,
7
@@ -6216,7 +6216,7 @@
[
"store_field",
157,
8,
12,
"use",
153,
29
@@ -6224,7 +6224,7 @@
[
"store_field",
157,
18,
6,
"args",
153,
43
@@ -6232,7 +6232,7 @@
[
"frame",
159,
9,
13,
3,
153,
1
@@ -6255,7 +6255,7 @@
"setarg",
159,
1,
14,
15,
153,
1
],
@@ -6263,7 +6263,7 @@
"setarg",
159,
2,
19,
17,
153,
1
],

1520
boot/streamline.cm.mcode
View File

File diff suppressed because it is too large Load Diff

1658
boot/tokenize.cm.mcode
View File

File diff suppressed because it is too large Load Diff

138
boot/verify_ir.cm.mcode
View File

@@ -484,7 +484,7 @@
[
"get",
27,
1,
2,
1,
167,
19
@@ -1907,13 +1907,13 @@
],
[
"null",
3,
5,
196,
19
],
[
"null",
5,
3,
197,
16
],
@@ -2612,7 +2612,7 @@
[
"get",
42,
4,
5,
1,
216,
19
@@ -2627,7 +2627,7 @@
],
[
"move",
3,
5,
43,
216,
34
@@ -2641,7 +2641,7 @@
[
"is_identical",
45,
3,
5,
44,
217,
24
@@ -2676,7 +2676,7 @@
[
"is_int",
46,
3,
5,
217,
24
],
@@ -2697,7 +2697,7 @@
[
"ne_int",
45,
3,
5,
44,
217,
24
@@ -2712,7 +2712,7 @@
[
"is_num",
46,
3,
5,
217,
24
],
@@ -2733,7 +2733,7 @@
[
"ne_float",
45,
3,
5,
44,
217,
24
@@ -2748,7 +2748,7 @@
[
"is_text",
46,
3,
5,
217,
24
],
@@ -2769,7 +2769,7 @@
[
"ne_text",
45,
3,
5,
44,
217,
24
@@ -2784,7 +2784,7 @@
[
"is_null",
46,
3,
5,
217,
24
],
@@ -2813,7 +2813,7 @@
[
"is_bool",
46,
3,
5,
217,
24
],
@@ -2834,7 +2834,7 @@
[
"ne_bool",
45,
3,
5,
44,
217,
24
@@ -2870,7 +2870,7 @@
[
"add",
49,
3,
5,
48,
218,
36
@@ -2885,7 +2885,7 @@
],
[
"move",
5,
3,
50,
218,
36
@@ -2893,7 +2893,7 @@
[
"is_text",
51,
5,
3,
219,
21
],
@@ -2915,7 +2915,7 @@
"load_dynamic",
53,
2,
5,
3,
219,
39
],
@@ -3227,7 +3227,7 @@
[
"push",
62,
5,
3,
1,
1
],
@@ -14364,7 +14364,7 @@
[
"get",
409,
7,
1,
1,
348,
9
@@ -15506,7 +15506,7 @@
],
[
"move",
4,
5,
10,
367,
22
@@ -15552,13 +15552,13 @@
],
[
"null",
5,
6,
372,
12
],
[
"null",
6,
4,
373,
19
],
@@ -15577,7 +15577,7 @@
[
"is_identical",
14,
4,
5,
13,
376,
23
@@ -15592,7 +15592,7 @@
[
"is_int",
15,
4,
5,
376,
23
],
@@ -15613,7 +15613,7 @@
[
"eq_int",
14,
4,
5,
13,
376,
23
@@ -15628,7 +15628,7 @@
[
"is_num",
15,
4,
5,
376,
23
],
@@ -15649,7 +15649,7 @@
[
"eq_float",
14,
4,
5,
13,
376,
23
@@ -15664,7 +15664,7 @@
[
"is_text",
15,
4,
5,
376,
23
],
@@ -15685,7 +15685,7 @@
[
"eq_text",
14,
4,
5,
13,
376,
23
@@ -15700,7 +15700,7 @@
[
"is_null",
15,
4,
5,
376,
23
],
@@ -15729,7 +15729,7 @@
[
"is_bool",
15,
4,
5,
376,
23
],
@@ -15750,7 +15750,7 @@
[
"eq_bool",
14,
4,
5,
13,
376,
23
@@ -15789,7 +15789,7 @@
[
"length",
17,
4,
5,
379,
21
],
@@ -15907,7 +15907,7 @@
[
"load_dynamic",
21,
4,
5,
8,
380,
26
@@ -16087,7 +16087,7 @@
[
"length",
33,
4,
5,
389,
21
],
@@ -16205,7 +16205,7 @@
[
"load_dynamic",
37,
4,
5,
8,
390,
26
@@ -16248,7 +16248,7 @@
],
[
"move",
5,
6,
40,
392,
18
@@ -16256,7 +16256,7 @@
[
"get",
41,
4,
5,
1,
393,
19
@@ -16265,13 +16265,13 @@
"load_dynamic",
42,
41,
5,
6,
393,
34
],
[
"move",
6,
4,
42,
393,
34
@@ -16285,7 +16285,7 @@
[
"is_identical",
44,
6,
4,
43,
394,
24
@@ -16320,7 +16320,7 @@
[
"is_int",
45,
6,
4,
394,
24
],
@@ -16341,7 +16341,7 @@
[
"ne_int",
44,
6,
4,
43,
394,
24
@@ -16356,7 +16356,7 @@
[
"is_num",
45,
6,
4,
394,
24
],
@@ -16377,7 +16377,7 @@
[
"ne_float",
44,
6,
4,
43,
394,
24
@@ -16392,7 +16392,7 @@
[
"is_text",
45,
6,
4,
394,
24
],
@@ -16413,7 +16413,7 @@
[
"ne_text",
44,
6,
4,
43,
394,
24
@@ -16428,7 +16428,7 @@
[
"is_null",
45,
6,
4,
394,
24
],
@@ -16457,7 +16457,7 @@
[
"is_bool",
45,
6,
4,
394,
24
],
@@ -16478,7 +16478,7 @@
[
"ne_bool",
44,
6,
4,
43,
394,
24
@@ -16514,7 +16514,7 @@
[
"add",
48,
6,
4,
47,
395,
36
@@ -16844,7 +16844,7 @@
[
"push",
61,
5,
6,
1,
1
],
@@ -17612,7 +17612,7 @@
[
"get",
26,
5,
3,
1,
415,
18
@@ -17959,7 +17959,7 @@
[
"get",
45,
2,
4,
1,
422,
18
@@ -18306,7 +18306,7 @@
[
"get",
64,
3,
6,
1,
429,
18
@@ -18653,7 +18653,7 @@
[
"get",
83,
6,
7,
1,
436,
18
@@ -23255,7 +23255,7 @@
],
[
"move",
1,
2,
9,
108,
15
@@ -24317,7 +24317,7 @@
],
[
"move",
7,
1,
306,
133,
16
@@ -24389,7 +24389,7 @@
],
[
"move",
4,
5,
382,
144,
18
@@ -24403,7 +24403,7 @@
],
[
"move",
5,
3,
387,
149,
25
@@ -24417,7 +24417,7 @@
],
[
"move",
2,
4,
388,
189,
26
@@ -24431,7 +24431,7 @@
],
[
"move",
3,
6,
389,
231,
30
@@ -24445,7 +24445,7 @@
],
[
"move",
6,
7,
390,
366,
29
@@ -24480,7 +24480,7 @@
[
"store_field",
392,
5,
3,
"check_slot_bounds",
448,
22
@@ -24488,7 +24488,7 @@
[
"store_field",
392,
2,
4,
"check_jump_targets",
449,
23
@@ -24496,7 +24496,7 @@
[
"store_field",
392,
3,
6,
"check_type_consistency",
450,
27
@@ -24504,7 +24504,7 @@
[
"store_field",
392,
6,
7,
"check_nop_consistency",
451,
26

5
source/quickjs-internal.h
View File

@@ -1082,6 +1082,11 @@ struct JSContext {
uint8_t *heap_end; /* end of block */
size_t current_block_size; /* current block size (64KB initially) */
size_t next_block_size; /* doubles if <10% recovered after GC */
int gc_poor_streak; /* consecutive poor-recovery GC cycles */
/* GC stats (lightweight, always on) */
uint64_t gc_count; /* number of GC cycles */
uint64_t gc_bytes_copied; /* total bytes copied across all GCs */
/* Constant text pool — compilation constants */
uint8_t *ct_base; /* pool base */

52
source/runtime.c
View File

@@ -1678,6 +1678,10 @@ int ctx_gc (JSContext *ctx, int allow_grow, size_t alloc_size) {
/* Update context with new block */
size_t new_used = to_free - to_base;
/* Update GC stats */
ctx->gc_count++;
ctx->gc_bytes_copied += new_used;
size_t recovered = old_used > new_used ? old_used - new_used : 0;
ctx->heap_base = to_base;
@@ -1697,19 +1701,23 @@ int ctx_gc (JSContext *ctx, int allow_grow, size_t alloc_size) {
}
#endif
/* If <20% recovered, double next block size for future allocations
But only if allow_grow is set (i.e., GC was triggered due to low space) */
/* If <40% recovered, grow next block size for future allocations.
First poor recovery: double. Consecutive poor: quadruple. */
#ifdef DUMP_GC
int will_grow = 0;
#endif
if (allow_grow && recovered > 0 && old_used > 0 && recovered < old_used / 5) {
size_t doubled = new_size * 2;
if (doubled <= buddy_max_block(&ctx->rt->buddy)) {
ctx->next_block_size = doubled;
if (allow_grow && recovered > 0 && old_used > 0 && recovered < old_used * 2 / 5) {
size_t factor = ctx->gc_poor_streak >= 1 ? 4 : 2;
size_t grown = new_size * factor;
if (grown <= buddy_max_block(&ctx->rt->buddy)) {
ctx->next_block_size = grown;
#ifdef DUMP_GC
will_grow = 1;
#endif
}
ctx->gc_poor_streak++;
} else {
ctx->gc_poor_streak = 0;
}
#ifdef DUMP_GC
@@ -1855,6 +1863,20 @@ JSContext *JS_NewContextRawWithHeapSize (JSRuntime *rt, size_t heap_size) {
/* Initialize per-context execution state (moved from JSRuntime) */
ctx->current_exception = JS_NULL;
/* Initialize constant text pool (avoids overflow pages for common case) */
{
size_t ct_pool_size = 64 * 1024; /* 64KB initial CT pool */
ctx->ct_base = js_malloc_rt (ct_pool_size);
if (!ctx->ct_base) {
js_free_rt (ctx->class_array);
js_free_rt (ctx->class_proto);
js_free_rt (ctx);
return NULL;
}
ctx->ct_free = ctx->ct_base;
ctx->ct_end = ctx->ct_base + ct_pool_size;
}
/* Initialize constant text intern table */
ctx->ct_pages = NULL;
ctx->ct_array = NULL;
@@ -1944,6 +1966,7 @@ void JS_FreeContext (JSContext *ctx) {
/* Free constant text pool and intern table */
ct_free_all (ctx);
if (ctx->ct_base) js_free_rt (ctx->ct_base);
js_free_rt (ctx->ct_hash);
js_free_rt (ctx->ct_array);
@@ -9757,6 +9780,22 @@ static JSValue js_mach_dump_mcode (JSContext *ctx, JSValue this_val, int argc, J
return JS_NULL;
}
/* gc_stats() — return {count, bytes_copied, heap_size, ct_pages} and reset counters */
static JSValue js_gc_stats (JSContext *ctx, JSValue this_val, int argc, JSValue *argv) {
JSValue obj = JS_NewObject (ctx);
if (JS_IsException (obj)) return obj;
JS_SetPropertyStr (ctx, obj, "count", JS_NewInt64 (ctx, (int64_t)ctx->gc_count));
JS_SetPropertyStr (ctx, obj, "bytes_copied", JS_NewInt64 (ctx, (int64_t)ctx->gc_bytes_copied));
JS_SetPropertyStr (ctx, obj, "heap_size", JS_NewInt64 (ctx, (int64_t)ctx->current_block_size));
/* Count CT overflow pages */
int ct_page_count = 0;
for (CTPage *p = (CTPage *)ctx->ct_pages; p; p = p->next) ct_page_count++;
JS_SetPropertyStr (ctx, obj, "ct_pages", JS_NewInt32 (ctx, ct_page_count));
ctx->gc_count = 0;
ctx->gc_bytes_copied = 0;
return obj;
}
/* mach_compile_mcode_bin(name, mcode_json) - compile mcode IR to serialized binary blob */
static JSValue js_mach_compile_mcode_bin (JSContext *ctx, JSValue this_val, int argc, JSValue *argv) {
if (argc < 2 || !JS_IsText (argv[0]) || !JS_IsText (argv[1]))
@@ -10849,6 +10888,7 @@ static void JS_AddIntrinsicBaseObjects (JSContext *ctx) {
js_set_global_cfunc(ctx, "mach_eval_mcode", js_mach_eval_mcode, 3);
js_set_global_cfunc(ctx, "mach_dump_mcode", js_mach_dump_mcode, 3);
js_set_global_cfunc(ctx, "mach_compile_mcode_bin", js_mach_compile_mcode_bin, 2);
js_set_global_cfunc(ctx, "gc_stats", js_gc_stats, 0);
js_set_global_cfunc(ctx, "stone", js_cell_stone, 1);
js_set_global_cfunc(ctx, "length", js_cell_length, 1);
js_set_global_cfunc(ctx, "call", js_cell_call, 3);