From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Mon, 29 Jun 2015 20:29:36 +0000 (-0400)
Subject: Cleanup: cast poll() return value to void for delays
X-Git-Tag: v0.9.0~57
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=109105b7f91d58e29a2b0cfb18c325d57cf80199;p=userspace-rcu.git

Cleanup: cast poll() return value to void for delays

Explicitly state that we don't care about poll return value in those
cases.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
---

diff --git a/urcu-call-rcu-impl.h b/urcu-call-rcu-impl.h
index c4a7875..5cc02d9 100644
--- a/urcu-call-rcu-impl.h
+++ b/urcu-call-rcu-impl.h
@@ -309,7 +309,7 @@ static void *call_rcu_thread(void *arg)
 			cmm_smp_mb__before_uatomic_or();
 			uatomic_or(&crdp->flags, URCU_CALL_RCU_PAUSED);
 			while ((uatomic_read(&crdp->flags) & URCU_CALL_RCU_PAUSE) != 0)
-				poll(NULL, 0, 1);
+				(void) poll(NULL, 0, 1);
 			uatomic_and(&crdp->flags, ~URCU_CALL_RCU_PAUSED);
 			cmm_smp_mb__after_uatomic_and();
 			rcu_register_thread();
@@ -341,7 +341,7 @@ static void *call_rcu_thread(void *arg)
 			if (cds_wfcq_empty(&crdp->cbs_head,
 					&crdp->cbs_tail)) {
 				call_rcu_wait(crdp);
-				poll(NULL, 0, 10);
+				(void) poll(NULL, 0, 10);
 				uatomic_dec(&crdp->futex);
 				/*
 				 * Decrement futex before reading
@@ -349,10 +349,10 @@ static void *call_rcu_thread(void *arg)
 				 */
 				cmm_smp_mb();
 			} else {
-				poll(NULL, 0, 10);
+				(void) poll(NULL, 0, 10);
 			}
 		} else {
-			poll(NULL, 0, 10);
+			(void) poll(NULL, 0, 10);
 		}
 		rcu_thread_online();
 	}
@@ -710,7 +710,7 @@ void call_rcu_data_free(struct call_rcu_data *crdp)
 		uatomic_or(&crdp->flags, URCU_CALL_RCU_STOP);
 		wake_call_rcu_thread(crdp);
 		while ((uatomic_read(&crdp->flags) & URCU_CALL_RCU_STOPPED) == 0)
-			poll(NULL, 0, 1);
+			(void) poll(NULL, 0, 1);
 	}
 	if (!cds_wfcq_empty(&crdp->cbs_head, &crdp->cbs_tail)) {
 		/* Create default call rcu data if need be */
@@ -880,7 +880,7 @@ void call_rcu_before_fork(void)
 	}
 	cds_list_for_each_entry(crdp, &call_rcu_data_list, list) {
 		while ((uatomic_read(&crdp->flags) & URCU_CALL_RCU_PAUSED) == 0)
-			poll(NULL, 0, 1);
+			(void) poll(NULL, 0, 1);
 	}
 }
 
@@ -897,7 +897,7 @@ void call_rcu_after_fork_parent(void)
 		uatomic_and(&crdp->flags, ~URCU_CALL_RCU_PAUSE);
 	cds_list_for_each_entry(crdp, &call_rcu_data_list, list) {
 		while ((uatomic_read(&crdp->flags) & URCU_CALL_RCU_PAUSED) != 0)
-			poll(NULL, 0, 1);
+			(void) poll(NULL, 0, 1);
 	}
 	call_rcu_unlock(&call_rcu_mutex);
 }