Function prune_grace_s

src/watcher/watcher.c:786–798

Sustained-absence window (seconds) before a missing root may be pruned. * Generous default: 10 minutes. Override with CBM_WATCHER_PRUNE_GRACE_S * (>= 0; 0 prunes as soon as the missing-poll streak is reached). Read on * each call so tests/operators can adjust via setenv without a restart — * same convention as cbm_max_file_bytes in limits.c. */

 * each call so tests/operators can adjust via setenv without a restart —
 * same convention as cbm_max_file_bytes in limits.c. */
static long prune_grace_s(void) {
    const char *raw = getenv("CBM_WATCHER_PRUNE_GRACE_S");
    if (raw && raw[0]) {
        errno = 0;
        char *end = NULL;
        long v = strtol(raw, &end, 10);
        if (errno == 0 && end != raw && *end == '\0' && v >= 0) {
            return v;
        }
        /* Unparseable / negative → fall through to the safe default. */
    }
    return PRUNE_GRACE_DEFAULT_S;
}

/* Format int to string for logging (poll thread only, one use per call). */
static const char *itoa_buf(int v) {