d54893ea1d
Step 2 & 3 Complete: - A/B test (Mixed 10-run): STATIC_ROUTE=0 (38.91M) → =1 (39.77M) = +2.20% avg - Median gain: +1.98% - Result: ✅ GO (exceeds +1.0% threshold) - Decision: ✅ ADOPT into MIXED_TINYV3_C7_SAFE preset - bench_profile.h line 77: HAKMEM_TINY_STATIC_ROUTE=1 default - Learner auto-disables static route when HAKMEM_SMALL_LEARNER_V7_ENABLED=1 Implementation Summary: - core/box/tiny_static_route_box.{h,c}: Research box (Step 1A) - core/front/malloc_tiny_fast.h: Route lookup integration (Step 1B, lines 249-256) - core/bench_profile.h: Bench sync + preset adoption Cumulative Phase 2-3 Gains: - B3 (Routing shape): +2.89% - B4 (Wrapper split): +1.47% - C3 (Static routing): +2.20% - Total: ~6.8% (35.2M → ~39.8M ops/s) Next: Phase 3 C1 (TLS Prefetch, expected +2-4%) 🤖 Generated with Claude Code Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
73 lines
3.7 KiB
C
73 lines
3.7 KiB
C
#include "tiny_env_box.h"
|
|
#include <stdlib.h>
|
|
#include <stdatomic.h>
|
|
|
|
tiny_env_cfg_t g_tiny_env = {0};
|
|
|
|
static int env_flag(const char* name, int def_val) {
|
|
const char* e = getenv(name);
|
|
if (!e || *e == '\0') return def_val;
|
|
return (*e != '0');
|
|
}
|
|
|
|
static int env_int(const char* name, int def_val) {
|
|
const char* e = getenv(name);
|
|
if (!e || *e == '\0') return def_val;
|
|
return atoi(e);
|
|
}
|
|
|
|
void tiny_env_init_once(void) {
|
|
static _Atomic int init_state = 0; // 0: uninit, 1: inited
|
|
int expected = 0;
|
|
if (!atomic_compare_exchange_strong_explicit(&init_state, &expected, 1,
|
|
memory_order_acq_rel, memory_order_relaxed)) {
|
|
return; // already initialized
|
|
}
|
|
|
|
g_tiny_env.tiny_tls_sll = env_flag("HAKMEM_TINY_TLS_SLL", 1);
|
|
g_tiny_env.sll_multiplier = env_int("HAKMEM_SLL_MULTIPLIER", 2);
|
|
g_tiny_env.tiny_no_front_cache = env_flag("HAKMEM_TINY_NO_FRONT_CACHE", 0);
|
|
g_tiny_env.tiny_no_quick = env_flag("HAKMEM_TINY_NO_QUICK", 0);
|
|
g_tiny_env.tiny_prefetch = env_flag("HAKMEM_TINY_PREFETCH", 0);
|
|
g_tiny_env.front_direct = env_flag("HAKMEM_TINY_FRONT_DIRECT", 0);
|
|
g_tiny_env.use_class_map = env_flag("HAKMEM_TINY_NO_CLASS_MAP", 0) ? 0 : 1;
|
|
g_tiny_env.route_enable = env_flag("HAKMEM_ROUTE", 0);
|
|
g_tiny_env.route_sample_lg = env_int("HAKMEM_ROUTE_SAMPLE_LG", 10);
|
|
g_tiny_env.larson_fix = env_flag("HAKMEM_TINY_LARSON_FIX", 0);
|
|
g_tiny_env.active_track = env_flag("HAKMEM_TINY_ACTIVE_TRACK", 0);
|
|
g_tiny_env.drain_to_sll = env_int("HAKMEM_TINY_DRAIN_TO_SLL", 0);
|
|
g_tiny_env.free_to_ss = env_flag("HAKMEM_TINY_FREE_TO_SS", 0);
|
|
g_tiny_env.route_free = env_flag("HAKMEM_TINY_ROUTE_FREE", 0);
|
|
g_tiny_env.sll_diag = env_flag("HAKMEM_TINY_SLL_DIAG", 0);
|
|
g_tiny_env.sll_safeheader = env_flag("HAKMEM_TINY_SLL_SAFEHEADER", 0);
|
|
g_tiny_env.sll_ring = env_flag("HAKMEM_TINY_SLL_RING", 0);
|
|
g_tiny_env.free_fast = env_flag("HAKMEM_TINY_FREE_FAST", 1);
|
|
g_tiny_env.sll_canary_fast = env_flag("HAKMEM_TINY_SLL_CANARY_FAST", 0);
|
|
g_tiny_env.ss_free_debug = env_flag("HAKMEM_SS_FREE_DEBUG", 0);
|
|
g_tiny_env.ss_adopt = env_flag("HAKMEM_TINY_SS_ADOPT", 1);
|
|
g_tiny_env.disable_remote = env_flag("HAKMEM_TINY_DISABLE_REMOTE", 0);
|
|
g_tiny_env.freelist_mask = env_flag("HAKMEM_TINY_FREELIST_MASK", 0);
|
|
g_tiny_env.alloc_1024_metric = env_flag("HAKMEM_TINY_ALLOC_1024_METRIC", 0);
|
|
g_tiny_env.tiny_profile = env_flag("HAKMEM_TINY_PROFILE", 0);
|
|
g_tiny_env.tiny_fast_stats = env_flag("HAKMEM_TINY_FAST_STATS", 0);
|
|
g_tiny_env.heap_v2_stats = env_flag("HAKMEM_TINY_HEAP_V2_STATS", 0);
|
|
g_tiny_env.front_slim = env_flag("HAKMEM_TINY_FRONT_SLIM", 0);
|
|
{
|
|
int pct = env_int("HAKMEM_SFC_CASCADE_PCT", 50);
|
|
if (pct < 0) pct = 0;
|
|
if (pct > 100) pct = 100;
|
|
g_tiny_env.sfc_cascade_pct = pct;
|
|
}
|
|
g_tiny_env.sfc_cascade = env_flag("HAKMEM_TINY_SFC_CASCADE", 0);
|
|
g_tiny_env.alloc_remote_relax = env_flag("HAKMEM_TINY_ALLOC_REMOTE_RELAX", 0);
|
|
g_tiny_env.ss_empty_reuse = env_flag("HAKMEM_SS_EMPTY_REUSE", 1);
|
|
g_tiny_env.ss_empty_scan_limit = env_int("HAKMEM_SS_EMPTY_SCAN_LIMIT", 32);
|
|
g_tiny_env.ss_acquire_debug = env_flag("HAKMEM_SS_ACQUIRE_DEBUG", 0);
|
|
g_tiny_env.tension_drain_enable = env_flag("HAKMEM_TINY_TENSION_DRAIN_ENABLE", 1);
|
|
g_tiny_env.tension_drain_threshold = env_int("HAKMEM_TINY_TENSION_DRAIN_THRESHOLD", 1024);
|
|
g_tiny_env.alloc_route_shape = env_flag("HAKMEM_TINY_ALLOC_ROUTE_SHAPE", 0);
|
|
|
|
g_tiny_env.inited = 1;
|
|
}
|
|
|