d9991f39ff
Add comprehensive design docs and research boxes: - docs/analysis/ALLOC_TINY_FAST_DUALHOT_1_DESIGN.md: ALLOC DUALHOT investigation - docs/analysis/FREE_TINY_FAST_DUALHOT_1_DESIGN.md: FREE DUALHOT final specs - docs/analysis/FREE_TINY_FAST_HOTCOLD_OPT_1_DESIGN.md: Hot/Cold split research - docs/analysis/POOL_MID_INUSE_DEFERRED_DN_BATCH_DESIGN.md: Deferred batching design - docs/analysis/POOL_MID_INUSE_DEFERRED_REGRESSION_ANALYSIS.md: Stats overhead findings - docs/analysis/MID_DESC_CACHE_BENCHMARK_2025-12-12.md: Cache measurement results - docs/analysis/LAST_MATCH_CACHE_IMPLEMENTATION.md: TLS cache investigation Research boxes (SS page table): - core/box/ss_pt_env_box.h: HAKMEM_SS_LOOKUP_KIND gate - core/box/ss_pt_types_box.h: 2-level page table structures - core/box/ss_pt_lookup_box.h: ss_pt_lookup() implementation - core/box/ss_pt_register_box.h: Page table registration - core/box/ss_pt_impl.c: Global definitions Updates: - docs/specs/ENV_VARS_COMPLETE.md: HOTCOLD, DEFERRED, SS_LOOKUP env vars - core/box/hak_free_api.inc.h: FREE-DISPATCH-SSOT integration - core/box/pool_mid_inuse_deferred_box.h: Deferred API updates - core/box/pool_mid_inuse_deferred_stats_box.h: Stats collection - core/hakmem_super_registry: SS page table integration Current Status: - FREE-TINY-FAST-DUALHOT-1: +13% improvement, ready for adoption - ALLOC-TINY-FAST-DUALHOT-1: -2% regression, frozen as research box - Next: Optimization roadmap per ROI (mimalloc gap 2.5x) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
28 lines
657 B
C
28 lines
657 B
C
#ifndef SS_PT_ENV_BOX_H
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#define SS_PT_ENV_BOX_H
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#include <stdlib.h>
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#include <string.h>
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// HAKMEM_SS_LOOKUP_KIND=hash|pt (default hash)
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static inline int hak_ss_lookup_pt_enabled(void) {
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static int g = -1;
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if (__builtin_expect(g == -1, 0)) {
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const char* e = getenv("HAKMEM_SS_LOOKUP_KIND");
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g = (e && strcmp(e, "pt") == 0) ? 1 : 0;
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}
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return g;
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}
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// HAKMEM_SS_PT_STATS=1 (default 0, OFF)
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static inline int hak_ss_pt_stats_enabled(void) {
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static int g = -1;
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if (__builtin_expect(g == -1, 0)) {
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const char* e = getenv("HAKMEM_SS_PT_STATS");
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g = (e && *e == '1') ? 1 : 0;
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}
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return g;
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}
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#endif
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