LibSync: Add try_lock and error checking to Mutex

This commit adds a try_lock method and checks errors from all the
relevante mutex functions and verifies when they fail.

Author: R-Goc

Libraries/LibSync/Mutex.cpp

@@ -6,6 +6,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <AK/Assertions.h>
 #include <AK/Concepts.h>
 #include <AK/Diagnostics.h>
 #include <AK/Error.h>
@@ -67,8 +68,11 @@ MutexBase<RecursivePolicy, InterprocessPolicy>::MutexBase()
     pthread_mutex_t* mutex_ptr = new (m_storage) pthread_mutex_t;
     pthread_mutexattr_t attr;
     pthread_mutexattr_init(&attr);
-    if constexpr (IsSame<RecursivePolicy, PolicyRecursive>)
+    if constexpr (IsSame<RecursivePolicy, PolicyRecursive>) {
         pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
+    } else {
+        pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK);
+    }
     if constexpr (IsSame<InterprocessPolicy, PolicyInterprocess>)
         pthread_mutexattr_setpshared(&attr, PTHREAD_PROCESS_SHARED);
     int result = pthread_mutex_init(mutex_ptr, &attr);

Libraries/LibSync/Mutex.h

@@ -50,6 +50,7 @@ class SYNC_API MutexBase {
     ~MutexBase();
 
     bool try_lock();
+
     void lock();
     void unlock();