Added debugging of memory use

test/ols_cmd.cpp

@@ -31,10 +31,55 @@ bool parse_key_value(std::string arg,cppcms::json::value &cfg)
 
 }
 
+//#define DEBUG_ALLOCATOR
+#ifdef DEBUG_ALLOCATOR
+
+static cv::MatAllocator *stda = nullptr;
+
+
+
+static std::atomic<int> counter_a;
+static std::atomic<size_t> memory_use;
+static std::atomic<size_t> memory_max;
+
+
+class MyAlloc : public cv::MatAllocator
+{
+public:
+    virtual cv::UMatData *  allocate (int dims, const int *sizes, int type, void *data, size_t *step, cv::AccessFlag flags, cv::UMatUsageFlags usageFlags) const override
+    {
+        cv::UMatData *p = stda->allocate(dims,sizes,type,data,step,flags,usageFlags);
+        p->currAllocator = this;
+        memory_use += p->size;
+        memory_max = std::max(size_t(memory_max),size_t(memory_use));
+        std::cerr << "A1 " << int(counter_a++) << " total " << memory_use / 1024 / 1024 << " max=" << memory_max / 1024 / 1024<< std::endl;
+        return p;
+    }
+    virtual bool allocate (cv::UMatData *data, cv::AccessFlag accessflags, cv::UMatUsageFlags usageFlags) const override 
+    {
+        std::cerr << "A2 " << int(counter_a++) << std::endl;
+        return stda->allocate(data,accessflags,usageFlags);
+    }
+    virtual void deallocate   (   cv::UMatData *  data    )   const override
+    {
+        memory_use -= data->size;
+        std::cerr << "D " << int(--counter_a) << " total " << memory_use / 1024 / 1024 << std::endl;
+        stda->deallocate(data);
+    }
+
+} alloc_inst;
+
+#endif
+
 int main(int argc,char **argv)
 {   
     try {
 
+#ifdef DEBUG_ALLOCATOR
+        stda = cv::Mat::getStdAllocator();
+        cv::Mat::setDefaultAllocator(&alloc_inst);
+#endif        
+
         std::string path;
         std::string driver;
         std::string driver_opt;