From b9c426012770d166e6ebfab27689be44e6e89aa5 Mon Sep 17 00:00:00 2001
From: Anthony Towns <aj@erisian.com.au>
Date: Sun, 1 Mar 2020 14:22:37 +1000
Subject: sync.h: add REVERSE_LOCK

---
 src/test/reverselock_tests.cpp | 45 ++++++++++++++++++++++++++++++++++--------
 1 file changed, 37 insertions(+), 8 deletions(-)

(limited to 'src/test/reverselock_tests.cpp')

diff --git a/src/test/reverselock_tests.cpp b/src/test/reverselock_tests.cpp
index 532fe143ae..4e51b8c02a 100644
--- a/src/test/reverselock_tests.cpp
+++ b/src/test/reverselock_tests.cpp
@@ -2,7 +2,7 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-#include <reverselock.h>
+#include <sync.h>
 #include <test/util/setup_common.h>
 
 #include <boost/test/unit_test.hpp>
@@ -11,21 +11,50 @@ BOOST_FIXTURE_TEST_SUITE(reverselock_tests, BasicTestingSetup)
 
 BOOST_AUTO_TEST_CASE(reverselock_basics)
 {
-    boost::mutex mutex;
-    boost::unique_lock<boost::mutex> lock(mutex);
+    Mutex mutex;
+    WAIT_LOCK(mutex, lock);
 
     BOOST_CHECK(lock.owns_lock());
     {
-        reverse_lock<boost::unique_lock<boost::mutex> > rlock(lock);
+        REVERSE_LOCK(lock);
         BOOST_CHECK(!lock.owns_lock());
     }
     BOOST_CHECK(lock.owns_lock());
 }
 
+BOOST_AUTO_TEST_CASE(reverselock_multiple)
+{
+    Mutex mutex2;
+    Mutex mutex;
+    WAIT_LOCK(mutex2, lock2);
+    WAIT_LOCK(mutex, lock);
+
+    // Make sure undoing two locks succeeds
+    {
+        REVERSE_LOCK(lock);
+        BOOST_CHECK(!lock.owns_lock());
+        REVERSE_LOCK(lock2);
+        BOOST_CHECK(!lock2.owns_lock());
+    }
+    BOOST_CHECK(lock.owns_lock());
+    BOOST_CHECK(lock2.owns_lock());
+}
+
 BOOST_AUTO_TEST_CASE(reverselock_errors)
 {
-    boost::mutex mutex;
-    boost::unique_lock<boost::mutex> lock(mutex);
+    Mutex mutex2;
+    Mutex mutex;
+    WAIT_LOCK(mutex2, lock2);
+    WAIT_LOCK(mutex, lock);
+
+#ifdef DEBUG_LOCKORDER
+    // Make sure trying to reverse lock a previous lock fails
+    try {
+        REVERSE_LOCK(lock2);
+        BOOST_CHECK(false); // REVERSE_LOCK(lock2) succeeded
+    } catch(...) { }
+    BOOST_CHECK(lock2.owns_lock());
+#endif
 
     // Make sure trying to reverse lock an unlocked lock fails
     lock.unlock();
@@ -34,7 +63,7 @@ BOOST_AUTO_TEST_CASE(reverselock_errors)
 
     bool failed = false;
     try {
-        reverse_lock<boost::unique_lock<boost::mutex> > rlock(lock);
+        REVERSE_LOCK(lock);
     } catch(...) {
         failed = true;
     }
@@ -49,7 +78,7 @@ BOOST_AUTO_TEST_CASE(reverselock_errors)
     lock.lock();
     BOOST_CHECK(lock.owns_lock());
     {
-        reverse_lock<boost::unique_lock<boost::mutex> > rlock(lock);
+        REVERSE_LOCK(lock);
         BOOST_CHECK(!lock.owns_lock());
     }
 
-- 
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