refactored GPU performance sample, added filter suport

samples/gpu/performance/performance.cpp

@@ -5,13 +5,27 @@
 using namespace std;
 using namespace cv;
 
+
+void TestSystem::setWorkingDir(const string& val)
+{
+    working_dir_ = val;
+}
+
+
+void TestSystem::setTestFilter(const string& val)
+{
+    test_filter_ = val;
+}
+
+
 void TestSystem::run()
 {
-    // Run initializers
+    // Run test initializers
     vector<Runnable*>::iterator it = inits_.begin();
     for (; it != inits_.end(); ++it)
     {
-        (*it)->run();
+        if ((*it)->name().find(test_filter_, 0) != string::npos)
+            (*it)->run();
     }
 
     printHeading();
@@ -20,21 +34,24 @@ void TestSystem::run()
     it = tests_.begin();
     for (; it != tests_.end(); ++it)
     {
-        cout << endl << (*it)->name() << ":\n";
         try
         {
-            (*it)->run();
-            flushSubtestData();
+            if ((*it)->name().find(test_filter_, 0) != string::npos)
+            {
+                cout << endl << (*it)->name() << ":\n";
+                (*it)->run();
+                finishCurrentSubtest();
+            }
         }
         catch (const Exception&)
         {
             // Message is printed via callback
-            resetSubtestData();
+            resetCurrentSubtest();
         }
         catch (const runtime_error& e)
         {
             printError(e.what());
-            resetSubtestData();
+            resetCurrentSubtest();
         }
     }
 
@@ -42,27 +59,23 @@ void TestSystem::run()
 }
 
 
-void TestSystem::setWorkingDir(const string& val)
-{
-    working_dir_ = val;
-}
-
-
-void TestSystem::flushSubtestData()
+void TestSystem::finishCurrentSubtest()
 {
-    if (!can_flush_)
+    if (cur_subtest_is_empty_)
+        // There is no need to print subtest statistics
         return;
 
     int cpu_time = static_cast<int>(cpu_elapsed_ / getTickFrequency() * 1000.0);
     int gpu_time = static_cast<int>(gpu_elapsed_ / getTickFrequency() * 1000.0);
 
-    double speedup = static_cast<double>(cpu_elapsed_) / std::max((int64)1, gpu_elapsed_);
+    double speedup = static_cast<double>(cpu_elapsed_) /
+                     std::max((int64)1, gpu_elapsed_);
     speedup_total_ += speedup;
 
-    printItem(cpu_time, gpu_time, speedup);
+    printMetrics(cpu_time, gpu_time, speedup);
     
     num_subtests_called_++;
-    resetSubtestData();
+    resetCurrentSubtest();
 }
 
 
@@ -86,7 +99,7 @@ void TestSystem::printSummary()
 }
 
 
-void TestSystem::printItem(double cpu_time, double gpu_time, double speedup)
+void TestSystem::printMetrics(double cpu_time, double gpu_time, double speedup)
 {
     cout << TAB << setiosflags(ios_base::left);
     stringstream stream;
@@ -102,14 +115,14 @@ void TestSystem::printItem(double cpu_time, double gpu_time, double speedup)
     stream << "x" << setprecision(3) << speedup;
     cout << setw(14) << stream.str();
 
-    cout << description_.str();
+    cout << cur_subtest_description_.str();
     cout << resetiosflags(ios_base::left) << endl;
 }
 
 
 void TestSystem::printError(const std::string& msg)
 {
-    cout << TAB << "[error: " << msg << "] " << description_.str() << endl;
+    cout << TAB << "[error: " << msg << "] " << cur_subtest_description_.str() << endl;
 }
 
 
@@ -138,13 +151,15 @@ int CV_CDECL cvErrorCallback(int /*status*/, const char* /*func_name*/,
 
 int main(int argc, char** argv)
 {
-    if (argc < 2)
-        cout << "Usage: performance_gpu <working_dir_with_slash>\n\n";
-    else
-        TestSystem::instance().setWorkingDir(argv[1]);
+    if (argc < 3)
+        cout << "Usage: performance_gpu <test_filter> <working_dir_with_slash>\n\n";
+    if (argc >= 2)
+        TestSystem::instance().setTestFilter(argv[1]);
+    if (argc >= 3)
+        TestSystem::instance().setWorkingDir(argv[2]);
 
     redirectError(cvErrorCallback);
     TestSystem::instance().run();
 
     return 0;
-}
+}
\ No newline at end of file

samples/gpu/performance/performance.h

@@ -13,9 +13,7 @@ class Runnable
 {
 public:
     explicit Runnable(const std::string& name): name_(name) {}
-
     const std::string& name() const { return name_; }
-
     virtual void run() = 0;
 
 private:
@@ -32,70 +30,67 @@ public:
         return me;
     }
 
-    void addInit(Runnable* init) { inits_.push_back(init); }
+    void setWorkingDir(const std::string& val);
+    const std::string& workingDir() const { return working_dir_; }
 
-    void addTest(Runnable* test) { tests_.push_back(test); }
+    void setTestFilter(const std::string& val);
+    const std::string& testFilter() const { return test_filter_; }
 
+    void addInit(Runnable* init) { inits_.push_back(init); }
+    void addTest(Runnable* test) { tests_.push_back(test); }
     void run();
 
-    // Ends current subtest and starts new one
-    std::stringstream& subtest()
+    // It's public because OpenCV callback uses it
+    void printError(const std::string& msg);
+
+    std::stringstream& startNewSubtest()
     {
-        flushSubtestData();
-        return description_;
+        finishCurrentSubtest();
+        return cur_subtest_description_;
     }
 
     void cpuOn() { cpu_started_ = cv::getTickCount(); }
-
     void cpuOff() 
     {
         int64 delta = cv::getTickCount() - cpu_started_;
         cpu_elapsed_ += delta;
-        can_flush_ = true;
+        cur_subtest_is_empty_ = false;
     }  
 
     void gpuOn() { gpu_started_ = cv::getTickCount(); }
-
     void gpuOff() 
     {
         int64 delta = cv::getTickCount() - gpu_started_;
         gpu_elapsed_ += delta;
-        can_flush_ = true;
+        cur_subtest_is_empty_ = false;
     }
 
-    void setWorkingDir(const std::string& val);
-
-    const std::string& workingDir() const { return working_dir_; }
-
-    void printError(const std::string& msg);
-
 private:
-    TestSystem(): can_flush_(false), cpu_elapsed_(0), gpu_elapsed_(0), 
-                  speedup_total_(0.0), num_subtests_called_(0) {}
+    TestSystem(): cur_subtest_is_empty_(true), cpu_elapsed_(0),
+                  gpu_elapsed_(0), speedup_total_(0.0),
+                  num_subtests_called_(0) {}
 
-    void flushSubtestData();
-
-    void resetSubtestData() 
+    void finishCurrentSubtest();
+    void resetCurrentSubtest() 
     {
         cpu_elapsed_ = 0;
         gpu_elapsed_ = 0;
-        description_.str("");
-        can_flush_ = false;
+        cur_subtest_description_.str("");
+        cur_subtest_is_empty_ = true;
     }
 
     void printHeading();
     void printSummary();
-    void printItem(double cpu_time, double gpu_time, double speedup);
+    void printMetrics(double cpu_time, double gpu_time, double speedup);
 
     std::string working_dir_;
+    std::string test_filter_;
 
     std::vector<Runnable*> inits_;
     std::vector<Runnable*> tests_;
 
-    // Current test (subtest) description
-    std::stringstream description_;
-
-    bool can_flush_;
+    std::stringstream cur_subtest_description_;
+    bool cur_subtest_is_empty_;
 
     int64 cpu_started_, cpu_elapsed_;
     int64 gpu_started_, gpu_elapsed_;
@@ -124,15 +119,17 @@ private:
     } name##_test_instance; \
     void name##_test::run()
 
-#define SUBTEST TestSystem::instance().subtest()
+#define SUBTEST TestSystem::instance().startNewSubtest()
 #define CPU_ON TestSystem::instance().cpuOn()
 #define GPU_ON TestSystem::instance().gpuOn()
 #define CPU_OFF TestSystem::instance().cpuOff()
 #define GPU_OFF TestSystem::instance().gpuOff()
 
+// Generates matrix
 void gen(cv::Mat& mat, int rows, int cols, int type, cv::Scalar low, 
          cv::Scalar high);
 
+// Returns abs path taking into account test system working dir
 std::string abspath(const std::string& relpath);
 
 #endif // OPENCV_GPU_SAMPLE_PERFORMANCE_H_