Replace QMutex with POSIX threads.

global.h

@@ -29,13 +29,13 @@
 #ifndef DSR_GLOBAL_H
 #define DSR_GLOBAL_H
 
-#include <QMutex>
+#include <pthread.h>
 
 #include "third_party/kiss_fft/kiss_fftr.h"
 
 
 #define PROGRAM_NAME          "DSRemote"
-#define PROGRAM_VERSION       "0.35_1707091423"
+#define PROGRAM_VERSION       "0.35_1707091429"
 
 #define MAX_PATHLEN            4096
 
@@ -245,7 +245,7 @@ struct device_settings
 
   int screenupdates_on;
 
-  QMutex *mutexx;
+  pthread_mutex_t mutexx;
 
   int thread_error_stat;
   int thread_error_line;

mainwindow.cpp

@@ -461,7 +461,8 @@ void UI_Mainwindow::close_connection()
 
     scrn_thread->wait(5000);
 
-    devparms.mutexx->unlock();
+    pthread_mutex_trylock(&devparms.mutexx);
+    pthread_mutex_unlock(&devparms.mutexx);
 
     scrn_thread->h_busy = 0;
   }
@@ -2714,21 +2715,21 @@ void UI_Mainwindow::screenUpdate()
 
   if(device == NULL)
   {
-    devparms.mutexx->unlock();
+    pthread_mutex_unlock(&devparms.mutexx);
 
     return;
   }
 
   if(!devparms.connected)
   {
-    devparms.mutexx->unlock();
+    pthread_mutex_unlock(&devparms.mutexx);
 
     return;
   }
 
   if(!devparms.screenupdates_on)
   {
-    devparms.mutexx->unlock();
+    pthread_mutex_unlock(&devparms.mutexx);
 
     return;
   }
@@ -2747,7 +2748,7 @@ void UI_Mainwindow::screenUpdate()
     msgBox.setText(str);
     msgBox.exec();
 
-    devparms.mutexx->unlock();
+    pthread_mutex_unlock(&devparms.mutexx);
 
     close_connection();
 
@@ -2756,7 +2757,7 @@ void UI_Mainwindow::screenUpdate()
 
   if(devparms.thread_result == TMC_THRD_RESULT_NONE)
   {
-    devparms.mutexx->unlock();
+    pthread_mutex_unlock(&devparms.mutexx);
 
     return;
   }
@@ -2770,14 +2771,14 @@ void UI_Mainwindow::screenUpdate()
 //      waveForm->setTrigLineVisible();
     }
 
-    devparms.mutexx->unlock();
+    pthread_mutex_unlock(&devparms.mutexx);
 
     return;
   }
 
   if(scrn_timer->isActive() == false)
   {
-    devparms.mutexx->unlock();
+    pthread_mutex_unlock(&devparms.mutexx);
 
     return;
   }
@@ -2828,7 +2829,7 @@ void UI_Mainwindow::screenUpdate()
 
   if(waveForm->hasMoveEvent() == true)
   {
-    devparms.mutexx->unlock();
+    pthread_mutex_unlock(&devparms.mutexx);
 
     return;
   }
@@ -2847,7 +2848,7 @@ void UI_Mainwindow::screenUpdate()
   {
     waveForm->clear();
 
-    devparms.mutexx->unlock();
+    pthread_mutex_unlock(&devparms.mutexx);
 
     return;
   }
@@ -2867,7 +2868,7 @@ void UI_Mainwindow::screenUpdate()
     waveForm->update();
   }
 
-  devparms.mutexx->unlock();
+  pthread_mutex_unlock(&devparms.mutexx);
 }
 
 

mainwindow.h

@@ -74,6 +74,7 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <unistd.h>
+#include <pthread.h>
 
 #include "global.h"
 #include "about_dialog.h"

mainwindow_constr.cpp

@@ -158,7 +158,7 @@ UI_Mainwindow::UI_Mainwindow()
 
   strcpy(devparms.modelname, "-----");
 
-  devparms.mutexx = new QMutex();
+  pthread_mutex_init(&devparms.mutexx, NULL);
 
   scrn_thread = new screen_thread;
   scrn_thread->set_device(NULL);
@@ -632,7 +632,7 @@ UI_Mainwindow::~UI_Mainwindow()
   delete scrn_thread;
   delete appfont;
   delete monofont;
-  delete devparms.mutexx;
+  pthread_mutex_destroy(&devparms.mutexx);
 
   free(devparms.screenshot_buf);
 

timer_handlers.cpp

@@ -117,7 +117,7 @@ void UI_Mainwindow::adjdial_timer_handler()
 
 void UI_Mainwindow::scrn_timer_handler()
 {
-  if(devparms.mutexx->tryLock() == false)
+  if(pthread_mutex_trylock(&devparms.mutexx))
   {
     return;
   }