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Priority-2: ENV Cache - SFC (Super Front Cache) getenv() 置換

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変更内容:
- hakmem_env_cache.h: 4つの新ENV変数を追加
  (SFC_DEBUG, SFC_ENABLE, SFC_CAPACITY, SFC_REFILL_COUNT)
- hakmem_tiny_sfc.c: 4箇所の getenv() を置換
  (init時のdebug/enable/capacity/refill設定)
  ※Per-class動的変数(2箇所)は初期化時のみのため後回し

効果: SFC層からも syscall を排除 (ENV変数数: 37→41)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
This commit is contained in:
Moe Charm (CI)
2025-12-02 20:32:22 +09:00
parent 38ce143ddf
commit b80b3d445e
2 changed files with 33 additions and 25 deletions
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34
core/hakmem_tiny_sfc.c
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@ -9,6 +9,7 @@
#include "hakmem_stats_master.h" // Phase 4d: Master stats control
#include "tiny_tls.h"
#include "box/tls_sll_box.h" // static inline tls_sll_pop/push API (Box TLS-SLL)
#include "hakmem_env_cache.h" // Priority-2: ENV cache (eliminate syscalls)
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
@ -49,37 +50,24 @@ static int g_sfc_refill_override[TINY_NUM_CLASSES] = {0};
// ============================================================================
void sfc_init(void) {
// Cache debug flag once (hot paths reuse g_sfc_debug)
const char* env_debug = getenv("HAKMEM_SFC_DEBUG");
g_sfc_debug = (env_debug && *env_debug && *env_debug != '0') ? 1 : 0;
// Parse ENV: HAKMEM_SFC_ENABLE
const char* env_enable = getenv("HAKMEM_SFC_ENABLE");
if (env_enable && *env_enable && *env_enable != '0') {
g_sfc_enabled = 1;
}
// Priority-2: Use cached ENV (eliminate init syscall overhead)
g_sfc_debug = HAK_ENV_SFC_DEBUG();
g_sfc_enabled = HAK_ENV_SFC_ENABLE();
if (!g_sfc_enabled) {
// SFC disabled, skip initialization
return;
}
// Parse ENV: HAKMEM_SFC_CAPACITY (default capacity for all classes)
const char* env_cap = getenv("HAKMEM_SFC_CAPACITY");
if (env_cap && *env_cap) {
int cap = atoi(env_cap);
if (cap >= SFC_MIN_CAPACITY && cap <= SFC_MAX_CAPACITY) {
g_sfc_default_capacity = cap;
}
// Priority-2: Use cached ENV (eliminate config syscall overhead)
int cap = HAK_ENV_SFC_CAPACITY();
if (cap >= SFC_MIN_CAPACITY && cap <= SFC_MAX_CAPACITY) {
g_sfc_default_capacity = cap;
}
// Parse ENV: HAKMEM_SFC_REFILL_COUNT (default refill for all classes)
const char* env_refill = getenv("HAKMEM_SFC_REFILL_COUNT");
if (env_refill && *env_refill) {
int refill = atoi(env_refill);
if (refill >= 8 && refill <= 256) {
g_sfc_default_refill = refill;
}
int refill = HAK_ENV_SFC_REFILL_COUNT();
if (refill >= 8 && refill <= 256) {
g_sfc_default_refill = refill;
}
// Parse ENV: HAKMEM_SFC_CAPACITY_CLASS{0..7} (per-class capacity override)