Suricata

/* TEST-ONLY: deterministic window widener for race reproduction.

*

* The startup race window is the interval between AFPPeersListReachedInc()

* (called right after bind(), before this function) and

* AFPSwitchState(AFP_STATE_UP) (called after this function returns).

* On a normal build with no memory pressure this window is very narrow

* and thread scheduling may not land inside it.

*

* Setting SURICATA_RING_SETUP_DELAY_US=N holds this window open for N

* microseconds, making the race fire deterministically.

*

* This is a NO-OP unless the env var is set. Never enable in production.

*/

const char *delay_env = getenv("SURICATA_RING_SETUP_DELAY_US");

if (delay_env != NULL) {

unsigned long delay_us = strtoul(delay_env, NULL, 10);

if (delay_us > 0) {

usleep((useconds_t)delay_us);

}

}