From: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Date: Mon, 8 Feb 2010 14:36:41 +0000 (-0500)
Subject: standardize rcu_gp_ongoing
X-Git-Tag: v0.4.1~4
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=e26fa029fb2db4c2f3746a3bfe46e9a0eeeb41a7;p=userspace-rcu.git

standardize rcu_gp_ongoing

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
---

diff --git a/urcu-qsbr-static.h b/urcu-qsbr-static.h
index 7cef820..9f3a9b9 100644
--- a/urcu-qsbr-static.h
+++ b/urcu-qsbr-static.h
@@ -156,24 +156,20 @@ static inline void wake_up_gp(void)
 }
 
 #if (BITS_PER_LONG < 64)
-static inline int rcu_gp_ongoing(unsigned long *value)
+static inline int rcu_gp_ongoing(unsigned long *ctr)
 {
-	unsigned long reader_gp;
+	unsigned long v;
 
-	if (value == NULL)
-		return 0;
-	reader_gp = LOAD_SHARED(*value);
-	return reader_gp && ((reader_gp ^ rcu_gp_ctr) & RCU_GP_CTR);
+	v = LOAD_SHARED(*ctr);
+	return v && ((v ^ rcu_gp_ctr) & RCU_GP_CTR);
 }
 #else /* !(BITS_PER_LONG < 64) */
-static inline int rcu_gp_ongoing(unsigned long *value)
+static inline int rcu_gp_ongoing(unsigned long *ctr)
 {
-	unsigned long reader_gp;
+	unsigned long v;
 
-	if (value == NULL)
-		return 0;
-	reader_gp = LOAD_SHARED(*value);
-	return reader_gp && (reader_gp - rcu_gp_ctr > ULONG_MAX / 2);
+	v = LOAD_SHARED(*ctr);
+	return v && (v - rcu_gp_ctr > ULONG_MAX / 2);
 }
 #endif  /* !(BITS_PER_LONG < 64) */
 
diff --git a/urcu-static.h b/urcu-static.h
index 1eeb2e6..504febb 100644
--- a/urcu-static.h
+++ b/urcu-static.h
@@ -242,17 +242,15 @@ static inline void wake_up_gp(void)
 	}
 }
 
-static inline int rcu_gp_ongoing(unsigned long *value)
+static inline int rcu_gp_ongoing(unsigned long *ctr)
 {
 	unsigned long v;
 
-	if (value == NULL)
-		return 0;
 	/*
 	 * Make sure both tests below are done on the same version of *value
 	 * to insure consistency.
 	 */
-	v = LOAD_SHARED(*value);
+	v = LOAD_SHARED(*ctr);
 	return (v & RCU_GP_CTR_NEST_MASK) &&
 		 ((v ^ rcu_gp_ctr) & RCU_GP_CTR_PHASE);
 }