From f4f705b64671cdfae4d4cf8997e64a81ddce201d Mon Sep 17 00:00:00 2001
From: Peizhao Ou <peizhaoo@uci.edu>
Date: Tue, 18 Mar 2014 20:51:08 -0700
Subject: [PATCH] save
---
benchmark/linuxrwlocks/linuxrwlocks.c | 26 +++++++++++++++++++++++---
benchmark/read-copy-update/rcu.cc | 2 +-
2 files changed, 24 insertions(+), 4 deletions(-)
diff --git a/benchmark/linuxrwlocks/linuxrwlocks.c b/benchmark/linuxrwlocks/linuxrwlocks.c
index c7ef94c..eaae816 100644
--- a/benchmark/linuxrwlocks/linuxrwlocks.c
+++ b/benchmark/linuxrwlocks/linuxrwlocks.c
@@ -293,16 +293,36 @@ static void a(void *obj)
for(i = 0; i < 2; i++) {
if ((i % 2) == 0) {
read_lock(&mylock);
- load_32(&shareddata);
+ //load_32(&shareddata);
+ printf("%d\n", shareddata);
read_unlock(&mylock);
} else {
write_lock(&mylock);
- store_32(&shareddata,(unsigned int)i);
+ //store_32(&shareddata,(unsigned int)i);
+ shareddata = 47;
write_unlock(&mylock);
}
}
}
+static void b(void *obj)
+{
+ int i;
+ for(i = 0; i < 2; i++) {
+ if ((i % 2) == 0) {
+ if (read_trylock(&mylock) == 1) {
+ printf("%d\n", shareddata);
+ read_unlock(&mylock);
+ }
+ } else {
+ if (write_trylock(&mylock) == 1) {
+ shareddata = 47;
+ write_unlock(&mylock);
+ }
+ }
+ }
+}
+
int user_main(int argc, char **argv)
{
/**
@@ -314,7 +334,7 @@ int user_main(int argc, char **argv)
atomic_init(&mylock.lock, RW_LOCK_BIAS);
thrd_create(&t1, (thrd_start_t)&a, NULL);
- thrd_create(&t2, (thrd_start_t)&a, NULL);
+ thrd_create(&t2, (thrd_start_t)&b, NULL);
thrd_join(t1);
thrd_join(t2);
diff --git a/benchmark/read-copy-update/rcu.cc b/benchmark/read-copy-update/rcu.cc
index 6f79126..3b49559 100644
--- a/benchmark/read-copy-update/rcu.cc
+++ b/benchmark/read-copy-update/rcu.cc
@@ -87,7 +87,7 @@ void write(Data *new_data) {
bool succ = false;
do {
succ = data.compare_exchange_strong(prev, new_data,
- memory_order_release, memory_order_relaxed);
+ memory_order_acq_rel, memory_order_relaxed);
/**
@Begin
@Commit_point_define_check: succ
--
2.34.1