CA3

.gitignore

@@ -6,4 +6,6 @@ CA2/Build
 CA2/main
 CA3/serial/*.out
 CA3/parallel/*.out
+CA3/serial/filtered.bmp
+CA3/parallel/filtered.bmp
 CA3/cmake-build-debug

CA3/parallel/makefile

@@ -1,6 +1,6 @@
 COMPILER = g++
 VERSION = -std=c++11
-OPTION = -pthread
+OPTION = -pthread -w
 CC = ${COMPILER} ${VERSION} ${OPTION}
 
 all: clean parallel

CA3/parallel/readImg.cpp

@@ -151,6 +151,7 @@ void *smoothing_r(void *) {
  image.r[i][j] = pixel_avg('r', i, j);
  }
  }
+ return nullptr;
 }
 
 void *smoothing_g(void *) {
@@ -159,6 +160,7 @@ void *smoothing_g(void *) {
  image.g[i][j] = pixel_avg('g', i, j);
  }
  }
+ return nullptr;
 }
 
 void *smoothing_b(void *) {
@@ -167,6 +169,7 @@ void *smoothing_b(void *) {
  image.b[i][j] = pixel_avg('b', i, j);
  }
  }
+ return nullptr;
 }
 
 void smoothing() {
@@ -186,6 +189,7 @@ void *sepia_r(void *) {
  else image.r[i][j] = red;
  }
  }
+ return nullptr;
 }
 
 void *sepia_g(void *) {
@@ -196,6 +200,7 @@ void *sepia_g(void *) {
  else image.g[i][j] = green;
  }
  }
+ return nullptr;
 }
 
 void *sepia_b(void *) {
@@ -207,6 +212,7 @@ void *sepia_b(void *) {
  else image.b[i][j] = blue;
  }
  }
+ return nullptr;
 }
 
 void sepia() {
@@ -246,29 +252,33 @@ void washed_out() {
 
  for (int i = 0; i < rows; ++i) {
  for (int j = 0; j < cols; ++j) {
- image.r[i][j] = (image.r[i][j] * 0.4) + ((long)red * 0.6);
- image.g[i][j] = (image.g[i][j] * 0.4) + ((long)green * 0.6);
- image.b[i][j] = (image.b[i][j] * 0.4) + ((long)blue * 0.6);
+ image.r[i][j] = (image.r[i][j] * 0.4) + ((long) red * 0.6);
+ image.g[i][j] = (image.g[i][j] * 0.4) + ((long) green * 0.6);
+ image.b[i][j] = (image.b[i][j] * 0.4) + ((long) blue * 0.6);
  }
  }
 }
 
-void cross() {
+void *cross_main(void *) {
  for (int i = 1; i < rows - 1; ++i) {
- for (int j = 0; j < cols; ++j) {
- if (i == j) {
- image.r[i][j] = 255;
- image.g[i][j] = 255;
- image.b[i][j] = 255;
+ image.r[i][i] = 255;
+ image.g[i][i] = 255;
+ image.b[i][i] = 255;
 
-  image.r[i + 1][j] = 255;
-  image.g[i + 1][j] = 255;
-  image.b[i + 1][j] = 255;
+ image.r[i + 1][i] = 255;
+ image.g[i + 1][i] = 255;
+ image.b[i + 1][i] = 255;
 
- image.r[i - 1][j] = 255;
- image.g[i - 1][j] = 255;
- image.b[i - 1][j] = 255;
- }
+ image.r[i - 1][i] = 255;
+ image.g[i - 1][i] = 255;
+ image.b[i - 1][i] = 255;
+ }
+ return nullptr;
+}
+
+void *cross_side(void *) {
+ for (int i = 1; i < rows - 1; ++i) {
+ for (int j = 0; j < cols; ++j) {
  if ((i + j) == rows) {
  image.r[i][j] = 255;
  image.g[i][j] = 255;
@@ -284,6 +294,14 @@ void cross() {
  }
  }
  }
+ return nullptr;
+}
+
+void cross() {
+ pthread_t threads[2];
+ pthread_create(&threads[0], nullptr, &cross_main, nullptr);
+ pthread_create(&threads[1], nullptr, &cross_side, nullptr);
+ for (unsigned long thread : threads) pthread_join(thread, nullptr);
 }
 
 int main(int argc, char *argv[]) {
@@ -302,12 +320,10 @@ int main(int argc, char *argv[]) {
  sepia();
  washed_out();
  cross();
- writeOutBmp24(fileBuffer, "/home/amin/CLionProjects/Operating_System_Course_Projects/CA3/parallel/filtered.bmp",
- bufferSize);
+ writeOutBmp24(fileBuffer, "filtered.bmp", bufferSize);
 
  auto end = chrono::high_resolution_clock::now();
- cout << chrono::duration_cast<chrono::milliseconds>(end - begin).count()
- << " Milliseconds" << endl;
+ cout << chrono::duration_cast<chrono::milliseconds>(end - begin).count() << endl;
 
  return 0;
 }

CA3/run.sh

@@ -0,0 +1,21 @@
+count=1
+s_sum=0
+p_sum=0
+make -C serial
+make -C parallel
+cd serial || exit
+for _ in $(seq $count); do
+ s=$(./ImageFilters.out ut.bmp)
+ s_sum=$(($s_sum + $s))
+done
+cd ..
+echo "Average time for $count serial executions = $(($s_sum / $count)) ms"
+cd parallel || exit
+for _ in $(seq $count); do
+ p=$(./ImageFilters.out ut.bmp)
+ p_sum=$(($p_sum + $p))
+done
+cd ..
+echo "Average time for $count parallel executions = $(($p_sum / $count)) ms"
+echo "Speedup"
+echo "$s_sum/$p_sum" | bc -l

CA3/serial/makefile

@@ -1,6 +1,8 @@
 COMPILER = g++
 VERSION = -std=c++11
-CC = ${COMPILER} ${VERSION}
+OPTION = -w
+CC = ${COMPILER} ${VERSION} ${OPTION}
+
 
 all: clean serial
 

CA3/serial/readImg.cpp

@@ -249,12 +249,10 @@ int main(int argc, char *argv[]) {
  sepia();
  washed_out();
  cross();
- writeOutBmp24(fileBuffer, "filtered.bmp",
- bufferSize);
+ writeOutBmp24(fileBuffer, "filtered.bmp", bufferSize);
 
  auto done = chrono::high_resolution_clock::now();
- cout << chrono::duration_cast<chrono::milliseconds>(done - started).count()
- << " Milliseconds" << endl;
+ cout << chrono::duration_cast<chrono::milliseconds>(done - started).count() << endl;
 
  return 0;
 }