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-rw-r--r--faceapi/lockfree.h130
1 files changed, 65 insertions, 65 deletions
diff --git a/faceapi/lockfree.h b/faceapi/lockfree.h
index ce7d2a64..47b810fa 100644
--- a/faceapi/lockfree.h
+++ b/faceapi/lockfree.h
@@ -1,65 +1,65 @@
-//lock free queue template class by Herb Sutter
-//Dr Dobbs Journal article http://www.drdobbs.com/cpp/210604448;jsessionid=OQGQPSMNL4X4XQE1GHPSKH4ATMY32JVN?pgno=1
-
-template <typename T> class LockFreeQueue
-{
-private:
- struct Node
- {
- Node( T val ) : value(val), next(nullptr) { }
- T value;
- Node* next;
- };
-
- Node* first; // for producer only
- Node* divider, last; // shared
-
- //not working in VC2008
- //atomic<Node*> divider, last; // shared
-
-public:
- LockFreeQueue()
- {
- // add dummy separator
- first = divider = last = new Node( T() );
- }
-
- ~LockFreeQueue()
- {
- while( first != nullptr )
- {
- // release the list
- Node* tmp = first;
- first = tmp->next;
- delete tmp;
- }
- }
-
- void Produce( const T& t )
- {
- last->next = new Node(t); // add the new item
- last = last->next; // publish it
-
- while( first != divider )
- {
- // trim unused nodes
- Node* tmp = first;
- first = first->next;
- delete tmp;
- }
- }
-
- bool Consume( T& result )
- {
- if( divider != last )
- {
- // if queue is nonempty
- result = divider->next->value; // copy it back
- divider = divider->next; // publish that we took it
- return true; // and report success
- }
-
- return false; // else report empty
- }
-};
-
+//lock free queue template class by Herb Sutter
+//Dr Dobbs Journal article http://www.drdobbs.com/cpp/210604448;jsessionid=OQGQPSMNL4X4XQE1GHPSKH4ATMY32JVN?pgno=1
+
+template <typename T> class LockFreeQueue
+{
+private:
+ struct Node
+ {
+ Node( T val ) : value(val), next(nullptr) { }
+ T value;
+ Node* next;
+ };
+
+ Node* first; // for producer only
+ Node* divider, last; // shared
+
+ //not working in VC2008
+ //atomic<Node*> divider, last; // shared
+
+public:
+ LockFreeQueue()
+ {
+ // add dummy separator
+ first = divider = last = new Node( T() );
+ }
+
+ ~LockFreeQueue()
+ {
+ while( first != nullptr )
+ {
+ // release the list
+ Node* tmp = first;
+ first = tmp->next;
+ delete tmp;
+ }
+ }
+
+ void Produce( const T& t )
+ {
+ last->next = new Node(t); // add the new item
+ last = last->next; // publish it
+
+ while( first != divider )
+ {
+ // trim unused nodes
+ Node* tmp = first;
+ first = first->next;
+ delete tmp;
+ }
+ }
+
+ bool Consume( T& result )
+ {
+ if( divider != last )
+ {
+ // if queue is nonempty
+ result = divider->next->value; // copy it back
+ divider = divider->next; // publish that we took it
+ return true; // and report success
+ }
+
+ return false; // else report empty
+ }
+};
+