static int32_t _check_connection_state_with(struct qb_ipcc_connection * c, int32_t res, struct qb_ipc_one_way * one_way, int32_t ms_timeout, int32_t events) { if (res >= 0) return res; if (qb_ipc_us_sock_error_is_disconnected(res)) { errno = -res; qb_util_perror(LOG_DEBUG, "interpreting result %d as a disconnect", res); c->is_connected = QB_FALSE; } if (res == -EAGAIN || res == -ETIMEDOUT) { int32_t res2; int32_t poll_ms = ms_timeout; if (res == -ETIMEDOUT) { poll_ms = 0; } res2 = qb_ipc_us_ready(one_way, &c->setup, poll_ms, events); if (qb_ipc_us_sock_error_is_disconnected(res2)) { errno = -res2; qb_util_perror(LOG_DEBUG, "%s %d %s", "interpreting result", res2, "(from socket) as a disconnect"); c->is_connected = QB_FALSE; } res = res2; } return res; }
static int32_t _check_connection_state_with(struct qb_ipcc_connection * c, int32_t res, struct qb_ipc_one_way * one_way, int32_t ms_timeout, int32_t events) { if (res >= 0) return res; if (qb_ipc_us_sock_error_is_disconnected(res)) { errno = -res; qb_util_perror(LOG_DEBUG, "interpreting result %d as a disconnect", res); c->is_connected = QB_FALSE; } if (res == -EAGAIN || res == -ETIMEDOUT) { int32_t res2; int32_t poll_ms = ms_timeout; if (res == -ETIMEDOUT) { poll_ms = 0; } res2 = qb_ipc_us_ready(one_way, &c->setup, poll_ms, events); if (qb_ipc_us_sock_error_is_disconnected(res2)) { errno = -res2; qb_util_perror(LOG_DEBUG, "%s %d %s", "interpreting result", res2, "(from socket) as a disconnect"); c->is_connected = QB_FALSE; res = res2; } else if (res != -ETIMEDOUT) { /* if the result we're checking against is a TIMEOUT error. * don't override that result with another error that does * not imply a disconnect */ res = res2; } } return res; }
static int32_t _check_connection_state(struct qb_ipcc_connection * c, int32_t res) { if (res >= 0) return res; if (qb_ipc_us_sock_error_is_disconnected(res)) { errno = -res; qb_util_perror(LOG_DEBUG, "interpreting result %d as a disconnect", res); c->is_connected = QB_FALSE; } return res; }
/* * recv a message of unknown size. */ static ssize_t qb_ipc_us_recv_at_most(struct qb_ipc_one_way *one_way, void *msg, size_t len, int32_t timeout) { int32_t result; int32_t final_rc = 0; int32_t to_recv = 0; char *data = msg; struct ipc_us_control *ctl = NULL; int32_t time_waited = 0; int32_t time_to_wait = timeout; if (timeout == -1) { time_to_wait = 1000; } qb_sigpipe_ctl(QB_SIGPIPE_IGNORE); retry_peek: result = recv(one_way->u.us.sock, data, sizeof(struct qb_ipc_request_header), MSG_NOSIGNAL | MSG_PEEK); if (result == -1) { if (errno != EAGAIN) { final_rc = -errno; #if !(defined(QB_LINUX) || defined(QB_CYGWIN)) if (errno == ECONNRESET || errno == EPIPE) { final_rc = -ENOTCONN; } #endif goto cleanup_sigpipe; } /* check to see if we have enough time left to try again */ if (time_waited < timeout || timeout == -1) { result = qb_ipc_us_ready(one_way, NULL, time_to_wait, POLLIN); if (qb_ipc_us_sock_error_is_disconnected(result)) { final_rc = result; goto cleanup_sigpipe; } time_waited += time_to_wait; goto retry_peek; } else if (time_waited >= timeout) { final_rc = -ETIMEDOUT; goto cleanup_sigpipe; } } if (result >= sizeof(struct qb_ipc_request_header)) { struct qb_ipc_request_header *hdr = NULL; hdr = (struct qb_ipc_request_header *)msg; to_recv = hdr->size; } result = recv(one_way->u.us.sock, data, to_recv, MSG_NOSIGNAL | MSG_WAITALL); if (result == -1) { final_rc = -errno; goto cleanup_sigpipe; } else if (result == 0) { qb_util_log(LOG_DEBUG, "recv == 0 -> ENOTCONN"); final_rc = -ENOTCONN; goto cleanup_sigpipe; } final_rc = result; ctl = (struct ipc_us_control *)one_way->u.us.shared_data; if (ctl) { (void)qb_atomic_int_dec_and_test(&ctl->sent); } cleanup_sigpipe: qb_sigpipe_ctl(QB_SIGPIPE_DEFAULT); return final_rc; }