From 2f5d5ece47f203a8cd12a2291567bba841be3b0b Mon Sep 17 00:00:00 2001
From: Mark Hoekveen <mark@hoekveen.net>
Date: Sun, 30 Jun 2019 00:28:08 +0200
Subject: [PATCH] Threading test added

---
 Descriptor.h          |  1 -
 DescriptorManager.cpp | 26 +++++++++++++++++++++++++-
 DescriptorManager.h   |  9 ++++-----
 Makefile              |  4 ++--
 main.cpp              | 14 +++++++++++++-
 5 files changed, 44 insertions(+), 10 deletions(-)

diff --git a/Descriptor.h b/Descriptor.h
index 77da5d1..d82b352 100644
--- a/Descriptor.h
+++ b/Descriptor.h
@@ -140,7 +140,6 @@ public:
 			for (ssize_t i = 0; i < n; i++) {
 				retval <<= 1;
 				if (q[0] > intensity)
-					//retval |= uint64_t(1);
 					retval++;
 				q = q + local_image->channels();
 			}
diff --git a/DescriptorManager.cpp b/DescriptorManager.cpp
index 4577b27..1befc0c 100644
--- a/DescriptorManager.cpp
+++ b/DescriptorManager.cpp
@@ -253,6 +253,30 @@ void DescriptorManager::runExperiments() {
 	}
 }
 
+//Test post please ignore
+void DescriptorManager::test() {
+	const uint64_t n = 1000000000;
+	//string insert = "constant"; //assuming string value doesn't matter.
+	int method = 2;
+	{
+
+		high_resolution_clock::time_point t1 = high_resolution_clock::now();
+		int target_distance = 5;
+		uint64_t better_count = 0;
+		map<string, uint64_t>::iterator it = features[method].begin();
+		for (uint64_t i = 0; i < n; i++) {
+			uint64_t a = (it++->second);
+			uint64_t b = (it++->second);
+			if(descriptor_types[method]->distance(a, b) <= target_distance) better_count++;
+			if(it == features[method].end()) it = features[method].begin();
+		}
+		high_resolution_clock::time_point t2 = high_resolution_clock::now();
+		duration<double> time_span = duration_cast<duration<double>>(t2 - t1);
+		cout << "It took me " << time_span.count() << " seconds to sort " << n << " big numbers." << endl;
+	}
+	
+}
+
 //outputs the gathered data to iostream
 //Tries to do some nice formatting and grouping of bits.
 void DescriptorManager::outputMap(int a) {
@@ -300,4 +324,4 @@ void DescriptorManager::generatePreviews(string imagename) {
 	for (int i = 0; i < numDescriptors; i++) {
 		descriptor_types[i]->preview(img);
 	}
-}
+}
\ No newline at end of file
diff --git a/DescriptorManager.h b/DescriptorManager.h
index 560db92..15bb26f 100644
--- a/DescriptorManager.h
+++ b/DescriptorManager.h
@@ -5,20 +5,17 @@
 #include <bitset>
 #include <climits>
 #include <set>
+#include <thread>
+
 #include <boost/filesystem.hpp>
 #include <boost/system/error_code.hpp>
 #include <boost/filesystem/fstream.hpp>
-//Boost serialization test:
 #include <boost/archive/binary_oarchive.hpp> 
 #include <boost/archive/binary_iarchive.hpp> 
 #include <boost/serialization/map.hpp> 
 #include <boost/serialization/bitset.hpp>
 #include <boost/serialization/string.hpp> 
 
-//YAS Serialization:
-//#include <yas/serialize.hpp>
-//#include <yas/std_types.hpp>
-
 #include <chrono> //Debug, for measuring execution times
 
 #include <Magick++.h> 
@@ -51,6 +48,7 @@ public:
 	void rankImages(string image_name, int method);
 	multiset<pair<uint64_t, string>> rankMutations(string image_name, int method);
 	void runExperiments();
+	void test();
 	void generatePreviews(string imagename);
 	void outputMap(int a);
 	void outputMap();
@@ -65,6 +63,7 @@ private:
 	Mutation* mutators[numMutations];
 	
 	Image* current_image = NULL; //for caching purposes
+	//TODO: Are maps the best container for us? Logarithmic random access is bad, but otherwise it might be fine?
 	map<string, uint64_t> features[numDescriptors]; //array of maps that will hold the descriptors
 	map<string, uint64_t> mutatedFeatures[numDescriptors][numMutations];
 	multiset<pair<uint64_t, string> > distances; //multiset that stores the distances
diff --git a/Makefile b/Makefile
index a320751..cd71b2b 100644
--- a/Makefile
+++ b/Makefile
@@ -1,8 +1,8 @@
 CXX = g++
 CC = $(CXX)
-CPPFLAGS = -O2 `Magick++-config --cppflags`
+CPPFLAGS = -O3 `Magick++-config --cppflags`
 BOOST_LIBS = -lboost_system -lboost_filesystem -lboost_serialization
-LDFLAGS = `Magick++-config --ldflags` $(BOOST_LIBS)
+LDFLAGS = `Magick++-config --ldflags` $(BOOST_LIBS) -lpthread
 SOURCES = DescriptorManager.cpp main.cpp
 OBJECTS = $(SOURCES:.cpp=.o)
 
diff --git a/main.cpp b/main.cpp
index bb30417..7878728 100644
--- a/main.cpp
+++ b/main.cpp
@@ -27,8 +27,20 @@ int main(int argc, char **argv) {
 	}
 	InitializeMagick(*argv);
 	DescriptorManager* manager = new DescriptorManager("test"); 
-	manager->Init();
+	manager->Init();/*
 	manager->rankImages(imagename, method);
 	manager->outputRank(imagename, method);
+	manager->outputMap(method);*/
+	cout << endl;
+
+	cout << "Starting first compute thread.." << endl;
+	thread first(&DescriptorManager::test, manager);
+	cout << "Starting second computer thread.." << endl;
+	thread second(&DescriptorManager::test, manager);
+	first.join();
+	
+	second.join();
+	cout << "we done." << endl;
+	//manager->test();
 	return 0;
 }