* @brief Reaps any child process with given pair_pgid that has terminated or stopped * * @param[in] cur_thr Current thread context * @param[in] self_lwp Parent process (current LWP) * @param[in] pair_pgid Process group ID to match (0 for any) * @param[in] options Wait options (e.g., WNOHANG) * @param[out] ustatus Pointer to store child's exit status (optional) * @param[in,out] uru Pointer t
| 1310 | * @note Iterates through child processes to find one that matches given pair_pgid |
| 1311 | */ |
| 1312 | static pid_t _reap_any_child_pid(rt_thread_t cur_thr, rt_lwp_t self_lwp, pid_t pair_pgid, |
| 1313 | int options, int *ustatus, struct rusage *uru) |
| 1314 | { |
| 1315 | sysret_t rc = -ECHILD; |
| 1316 | struct rt_lwp *child; |
| 1317 | |
| 1318 | LWP_LOCK(self_lwp); |
| 1319 | child = self_lwp->first_child; |
| 1320 | |
| 1321 | /* find a exited child if any */ |
| 1322 | while (child) |
| 1323 | { |
| 1324 | if (pair_pgid && child->pgid != pair_pgid) |
| 1325 | continue; |
| 1326 | |
| 1327 | rc = _query_event_from_lwp(child, cur_thr, self_lwp, options, ustatus); |
| 1328 | if (rc > 0) |
| 1329 | break; |
| 1330 | |
| 1331 | child = child->sibling; |
| 1332 | } |
| 1333 | LWP_UNLOCK(self_lwp); |
| 1334 | |
| 1335 | if (rc > 0) |
| 1336 | { |
| 1337 | _stats_and_reap_child(child, cur_thr, self_lwp, ustatus, options, uru); |
| 1338 | } |
| 1339 | return rc; |
| 1340 | } |
| 1341 | |
| 1342 | /** |
| 1343 | * @brief Wakes up processes waiting for a child process status change |
no test coverage detected