ported to qt5.

wrap/gcache/cache.h

@@ -18,6 +18,9 @@ typedef unsigned __int64 uint64_t;
 #include <limits.h>
 #include <vector>
 #include <list>
+
+#include "token.h"
+
 #include <wrap/system/multithreading/mt.h>
 #include <wrap/system/multithreading/atomic_int.h>
 
@@ -87,7 +90,7 @@ public:
                 Token *token = &(this->heap[i]);
                 //tokens.push_back(token);
                 s_curr -= drop(token);
-                assert(!(token->count.load() >= Token::LOCKED));
+                //assert(!(token->count.load() >= Token::LOCKED));
                 if(final)
                     token->count.testAndSetOrdered(Token::READY, Token::CACHE);
                 input->heap.push(token);
@@ -112,7 +115,7 @@ public:
                 if(functor(token)) { //drop it
                     tokens.push_back(token);
                     s_curr -= drop(token);
-                    assert(token->count.load() < Token::LOCKED);
+                    //assert(token->count.load() < Token::LOCKED);
                     if(final)
                         token->count.testAndSetOrdered(Token::READY, Token::CACHE);
                 } else
@@ -140,25 +143,18 @@ protected:
     virtual int drop(Token *token) = 0;
     ///make sure the get function do not access token after abort is returned.
 
-
-
-
-    ///called in as first thing in run()
-    virtual void begin() {}
     virtual void middle() {}
-    ///called in as last thing in run()
-    virtual void end() {}
 
     ///[should be protected]
     void run() {
         assert(input);
         /* basic operation of the cache:
-       1) transfer first element of input_cache if
+          1) make room until eliminating an element would leave empty space.
-          cache has room OR first element in input as higher priority of last element
+          2) transfer first element of input_cache if
-       2) make room until eliminating an element would leave space. */
+          cache has room OR first element in input has higher priority of last element */
-        begin();
+
         while(!this->quit) {
-            input->check_queue.enter(true);     //wait for cache below to load something or priorities to change
+            input->check_queue.enter();     //wait for cache below to load something or priorities to change
             if(this->quit) break;
 
             middle();
@@ -166,11 +162,11 @@ protected:
             if(unload() || load()) {
                 new_data.testAndSetOrdered(0, 1);  //if not changed, set as changed
                 input->check_queue.open();        //we signal ourselves to check again
+                cout << "loaded or unloaded\n";
             }
             input->check_queue.leave();
         }
         this->quit = false;                   //in case someone wants to restart;
-        end();
     }
 
 
@@ -198,7 +194,12 @@ protected:
                         remove = this->heap.popMin();
                     } else {
                         last.count.testAndSetOrdered(Token::READY, Token::CACHE);
-                        if(last.count.load() <= Token::CACHE) { //was not locked and now can't be locked, remove it.
+#if(QT_VERSION < 0x05000000)
+                int last_count = last.count;
+#else
+                int last_count = last.count.load();
+#endif
+                        if(last_count <= Token::CACHE) { //was not locked and now can't be locked, remove it.
                             remove = this->heap.popMin();
                         } else { //last item is locked need to reorder stack
                             remove = this->heap.popMin();
@@ -245,7 +246,12 @@ protected:
             input->rebuild();                                  //if dirty rebuild
             if(input->heap.size()) {                           //we need something in input to tranfer.
                 Token &first = input->heap.max();
-                if(first.count.load() > Token::REMOVE &&
+#if(QT_VERSION < 0x05000000)
+                int first_count = first.count;
+#else
+                int first_count = first.count.load();
+#endif
+                if(first_count > Token::REMOVE &&
                         (!last || first.priority > last->priority)) { //if !last we already decided we want a transfer., otherwise check for a swap
                     insert = input->heap.popMax();                 //remove item from heap, while we transfer it.
                 }
@@ -279,22 +285,5 @@ protected:
 };
 
 } //namespace
-/* TODO use the following class to allow multiple cache transfers at the same time  */
-
-/*
-template<typename Token>
-class Transfer: public mt::thread {
- public:
-  Transfer(Cache<Token> *_cache): cache(_cache) {}
- private:
-  Cache<Token> *cache;
-
-  void run() {
-    cache->loop();
-    //end();
-  }
-};
-
-*/
 
 #endif // GCACHE_H

wrap/gcache/token.h

@@ -19,7 +19,7 @@ namespace vcg {
 
 template <typename Priority>
 class Token {
- public:
+public:
     ///Resource loading status
     /*** - LOCKED: resource in the higher cache and locked
        - READY: resource in the higher cache
@@ -35,23 +35,26 @@ class Token {
     ///swap space used in updatePriorities [do not use, should be private]
     mt::atomicInt count;
 
- public:
+public:
     Token(): count(OUTSIDE) {}
 
     ///the new priority will be effective only after a call to Controller::updatePriorities()
     void setPriority(const Priority &p) {
         new_priority = p;
     }
+
     //set and get are safe to call in the controller thread.
     Priority getPriority() {
         return new_priority;
     }
+
     ///return false if resource not in highest query. remember to unlock when done
     bool lock() {
         if(count.fetchAndAddAcquire(1) >= 0) return true;
         count.deref();
         return false;
     }
+
     ///assumes it was locked first and 1 unlock for each lock.
     bool unlock() {
         return count.deref();
@@ -61,10 +64,20 @@ class Token {
     bool remove() {
         count.testAndSetOrdered(READY, REMOVE);
         count.testAndSetOrdered(CACHE, REMOVE);
+#if(QT_VERSION < 0x05000000)
+        return count <= REMOVE;
+#else
         return count.load() <= REMOVE;                   //might have become OUSIDE in the meanwhile
+#endif
     }
 
-  bool isLocked() { return count.load() > 0; }
+    bool isLocked() {
+#if(QT_VERSION < 0x05000000)
+        return count > 0;
+#else
+        return count.load() > 0;
+#endif
+    }
     bool isInCache() { return count != OUTSIDE; }  //careful, can be used only when provider thread is locked.
 
     ///copy priority to swap space [do not use, should be private]
@@ -73,14 +86,26 @@ class Token {
     }
 
     bool operator<(const Token &a) const {
+#if(QT_VERSION < 0x05000000)
+        if(count == a.count)
+            return priority < a.priority;
+        return count < a.count;
+#else
         if(count.load() == a.count.load())
             return priority < a.priority;
         return count.load() < a.count.load();
+#endif
     }
     bool operator>(const Token &a) const {
+#if(QT_VERSION < 0x05000000)
+        if(count == a.count)
+            return priority > a.priority;
+        return count > a.count;
+#else
         if(count.load() == a.count.load())
             return priority > a.priority;
         return count.load() > a.count.load();
+#endif
     }
 };