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Guard madvise ENOMEM and stabilize pool/tiny front v3

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This commit is contained in:
Moe Charm (CI)
2025-12-09 21:50:15 +09:00
parent e274d5f6a9
commit a905e0ffdd
45 changed files with 3154 additions and 242 deletions
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8
core/superslab_cache.c
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@ -4,6 +4,7 @@
// Date: 2025-11-28
#include "hakmem_tiny_superslab_internal.h"
#include "hakmem_env_cache.h"
#include "box/ss_os_acquire_box.h"
// ============================================================================
@ -116,9 +117,12 @@ void* ss_os_acquire(uint8_t size_class, size_t ss_size, uintptr_t ss_mask, int p
// This is critical: we MUST touch the pages after munmap() to establish valid mappings
// CRITICAL FIX (2025-12-05): Use MADV_POPULATE_WRITE for efficiency
#ifdef MADV_POPULATE_WRITE
int ret = madvise(ptr, ss_size, MADV_POPULATE_WRITE);
ss_os_stats_record_madvise();
int ret = ss_os_madvise_guarded(ptr, ss_size, MADV_POPULATE_WRITE, "ss_cache_populate");
if (ret != 0) {
if (HAK_ENV_SS_MADVISE_STRICT() && errno == EINVAL) {
fprintf(stderr, "[SS_CACHE] madvise(MADV_POPULATE_WRITE) EINVAL (strict). Aborting.\n");
abort();
}
// Fallback: explicit memset
memset(ptr, 0, ss_size);
}