[libsigcplusplus] benchmark: Rearrange.

[Murray Cumming <murrayc src gnome org>]

commit ac25f0955a41d471de7cea1f98b552455a236a42
Author: Murray Cumming <murrayc murrayc com>
Date:   Wed Apr 20 10:06:55 2016 +0200

    benchmark: Rearrange.

 tests/benchmark.cc |   64 ++++++++++++++++++++++++++++++++++++---------------
 1 files changed, 45 insertions(+), 19 deletions(-)
---
diff --git a/tests/benchmark.cc b/tests/benchmark.cc
index e4adb3c..d9ef614 100644
--- a/tests/benchmark.cc
+++ b/tests/benchmark.cc
@@ -20,20 +20,16 @@ int foo::bar(int a)
   return b;
 }
 
-int main()
+void test_slot_call()
 {
-  Glib::TimeVal t1, t2;
-
-  foo foobar1, foobar2, foobar3, foobar4, foobar5;
-  sigc::slot<int,int> slot;
-  sigc::signal<int,int> emitter;
+  foo foobar1;
   sigc::signal<int,int>::iterator it;
 
-
   // slot benchmark ...
 
-  slot = sigc::mem_fun(&foobar1, &foo::bar);
+  sigc::slot<int,int> slot = sigc::mem_fun(&foobar1, &foo::bar);
 
+  Glib::TimeVal t1, t2;
   t1.assign_current_time();
 
   for (int i=0; i < 5000; ++i)
@@ -43,10 +39,13 @@ int main()
   t2.subtract(t1);
 
   std::cout << "elapsed time for calling a slot 5000 times: " << t2.tv_sec << "s " << t2.tv_usec << "us" << 
std::endl;
+}
 
+void test_signal_emit()
+{
+  sigc::signal<int,int> emitter;
 
-  // emission benchmark (zero slots) ...
-
+  Glib::TimeVal t1, t2;
   t1.assign_current_time();
 
   for (int i=0; i < 1000; ++i)
@@ -56,12 +55,15 @@ int main()
   t2.subtract(t1);
 
   std::cout << "elapsed time for 1000 emissions (0 slots): " << t2.tv_sec << "s " << t2.tv_usec << "us" << 
std::endl;
+}
 
-
-  // emission benchmark (one slot) ...
-
+void test_connected_signal_emit()
+{
+  foo foobar1;
+  sigc::signal<int,int> emitter;
   emitter.connect(mem_fun(&foobar1, &foo::bar));
 
+  Glib::TimeVal t1, t2;
   t1.assign_current_time();
 
   for (int i=0; i < 1000; ++i)
@@ -71,15 +73,19 @@ int main()
   t2.subtract(t1);
 
   std::cout << "elapsed time for 1000 emissions (1 slot): " << t2.tv_sec << "s " << t2.tv_usec << "us" << 
std::endl;
+}
 
+void test_connected_multiple_signal_emit()
+{
+  foo foobar1, foobar2, foobar3, foobar4, foobar5;
 
-  // emission benchmark (five slot) ...
-
+  sigc::signal<int,int> emitter;
   emitter.connect(mem_fun(&foobar2, &foo::bar));
   emitter.connect(mem_fun(&foobar3, &foo::bar));
   emitter.connect(mem_fun(&foobar4, &foo::bar));
   emitter.connect(mem_fun(&foobar5, &foo::bar));
 
+  Glib::TimeVal t1, t2;
   t1.assign_current_time();
 
   for (int i=0; i < 1000; ++i)
@@ -89,12 +95,15 @@ int main()
   t2.subtract(t1);
 
   std::cout << "elapsed time for 1000 emissions (5 slots): " << t2.tv_sec << "s " << t2.tv_usec << "us" << 
std::endl;
+}
 
+void test_connect_disconnect()
+{
+  foo foobar1;
+  sigc::signal<int, int> emitter;
+  sigc::signal<int, int>::iterator it;
 
-  // connection / disconnection benchmark ...
-
-  emitter.clear();
-
+  Glib::TimeVal t1, t2;
   t1.assign_current_time();
 
   for (int i=0; i < 1000; ++i)
@@ -107,5 +116,22 @@ int main()
   t2.subtract(t1);
 
   std::cout << "elapsed time for 1000 connections/disconnections: " << t2.tv_sec << "s " << t2.tv_usec << 
"us" << std::endl;
+}
 
+int main()
+{
+  // slot benchmark ...
+  test_slot_call();
+
+  // emission benchmark (zero slots) ...
+  test_signal_emit();
+
+  // emission benchmark (one slot) ...
+  test_connected_signal_emit();
+
+  // emission benchmark (five slot) ...
+  test_connected_multiple_signal_emit();
+
+  // connection / disconnection benchmark ...
+  test_connect_disconnect();
 }