Add redzones around lockless queue data
This will help catch writers corrupting memory by writing outside the
bounds of their buffers.
No significant impact on CPU load or memory usage.
Change-Id: Ica78b967d0251befd2a99b1039ddbfb145ff033d
diff --git a/aos/ipc_lib/lockless_queue_test.cc b/aos/ipc_lib/lockless_queue_test.cc
index e1e2516..6510501 100644
--- a/aos/ipc_lib/lockless_queue_test.cc
+++ b/aos/ipc_lib/lockless_queue_test.cc
@@ -317,8 +317,32 @@
}
}
+namespace {
+
+// Temporarily pins the current thread to CPUs 0 and 1.
+// This speeds up the test on some machines a lot (~4x). It also preserves
+// opportunities for the 2 threads to race each other.
+class PinForTest {
+ public:
+ PinForTest() {
+ PCHECK(sched_getaffinity(0, sizeof(old_), &old_) == 0);
+ cpu_set_t new_set;
+ CPU_ZERO(&new_set);
+ CPU_SET(0, &new_set);
+ CPU_SET(1, &new_set);
+ PCHECK(sched_setaffinity(0, sizeof(new_set), &new_set) == 0);
+ }
+ ~PinForTest() { PCHECK(sched_setaffinity(0, sizeof(old_), &old_) == 0); }
+
+ private:
+ cpu_set_t old_;
+};
+
+} // namespace
+
// Send enough messages to wrap the 32 bit send counter.
TEST_F(LocklessQueueTest, WrappedSend) {
+ PinForTest pin_cpu;
uint64_t kNumMessages = 0x100010000ul;
QueueRacer racer(queue(), 1, kNumMessages);