Make PTHREAD_PRIO_INHERIT optional (fixes #375, please test)

source/modules/distrho/extra/Mutex.hpp

@@ -37,12 +37,12 @@ public:
     /*
      * Constructor.
      */
-    Mutex() noexcept
+    Mutex(bool inheritPriority = true) noexcept
         : fMutex()
     {
         pthread_mutexattr_t atts;
         pthread_mutexattr_init(&atts);
-        pthread_mutexattr_setprotocol(&atts, PTHREAD_PRIO_INHERIT);
+        pthread_mutexattr_setprotocol(&atts, inheritPriority ? PTHREAD_PRIO_INHERIT : PTHREAD_PRIO_NONE);
         pthread_mutexattr_settype(&atts, PTHREAD_MUTEX_NORMAL);
         pthread_mutex_init(&fMutex, &atts);
         pthread_mutexattr_destroy(&atts);

source/modules/distrho/extra/Thread.hpp

@@ -37,7 +37,7 @@ protected:
      * Constructor.
      */
     Thread(const char* const threadName = nullptr) noexcept
-        : fLock(),
+        : fLock(false),
           fName(threadName),
 #ifdef PTW32_DLLPORT
           fHandle({nullptr, 0}),

source/native-plugins/zynaddsubfx-synth.cpp

@@ -189,7 +189,7 @@ static ZynAddSubFxPrograms sPrograms;
 
 // -----------------------------------------------------------------------
 
-class MiddleWareThread : public CarlaThread
+class MiddleWareThread : private CarlaThread
 {
 public:
       class ScopedStopper

source/utils/CarlaMutex.hpp

@@ -31,13 +31,13 @@ public:
     /*
      * Constructor.
      */
-    CarlaMutex() noexcept
+    CarlaMutex(const bool inheritPriority = true) noexcept
         : fMutex(),
           fTryLockWasCalled(false)
     {
         pthread_mutexattr_t atts;
         pthread_mutexattr_init(&atts);
-        pthread_mutexattr_setprotocol(&atts, PTHREAD_PRIO_INHERIT);
+        pthread_mutexattr_setprotocol(&atts, inheritPriority ? PTHREAD_PRIO_INHERIT : PTHREAD_PRIO_NONE);
         pthread_mutexattr_settype(&atts, PTHREAD_MUTEX_NORMAL);
         pthread_mutex_init(&fMutex, &atts);
         pthread_mutexattr_destroy(&atts);

source/utils/CarlaThread.hpp

@@ -35,7 +35,7 @@ protected:
      * Constructor.
      */
     CarlaThread(const char* const threadName = nullptr) noexcept
-        : fLock(),
+        : fLock(false),
           fName(threadName),
 #ifdef PTW32_DLLPORT
           fHandle({nullptr, 0}),