Remove boost date_time dependencies

git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/boost_system_no_deprecated_test@2529 636b058d-ea47-450e-bf9e-a15bfbe3eedb

Former-commit-id: daa13fc0046ffdd72577bb1b399fcbdc8ef5033c

5 files changed, 14 insertions, 15 deletions

diff --git a/src/Tangential_complex/benchmark/CMakeLists.txt b/src/Tangential_complex/benchmark/CMakeLists.txt
index 8cb16e8c..8729e394 100644
--- a/src/Tangential_complex/benchmark/CMakeLists.txt
+++ b/src/Tangential_complex/benchmark/CMakeLists.txt
@@ -3,8 +3,7 @@ project(Tangential_complex_benchmark)
 
 if (NOT CGAL_WITH_EIGEN3_VERSION VERSION_LESS 4.8.1)
   add_executable(Tangential_complex_benchmark benchmark_tc.cpp)
-  target_link_libraries(Tangential_complex_benchmark
-    ${Boost_DATE_TIME_LIBRARY} ${CGAL_LIBRARY})
+  target_link_libraries(Tangential_complex_benchmark ${CGAL_LIBRARY})
   if (TBB_FOUND)
     target_link_libraries(Tangential_complex_benchmark ${TBB_LIBRARIES})
   endif(TBB_FOUND)
diff --git a/src/Tangential_complex/example/CMakeLists.txt b/src/Tangential_complex/example/CMakeLists.txt
index 45c7642b..16d1339d 100644
--- a/src/Tangential_complex/example/CMakeLists.txt
+++ b/src/Tangential_complex/example/CMakeLists.txt
@@ -3,9 +3,9 @@ project(Tangential_complex_examples)
 
 if (NOT CGAL_WITH_EIGEN3_VERSION VERSION_LESS 4.8.1)
   add_executable( Tangential_complex_example_basic example_basic.cpp )
-  target_link_libraries(Tangential_complex_example_basic ${CGAL_LIBRARY} ${Boost_DATE_TIME_LIBRARY})
+  target_link_libraries(Tangential_complex_example_basic ${CGAL_LIBRARY})
   add_executable( Tangential_complex_example_with_perturb example_with_perturb.cpp )
-  target_link_libraries(Tangential_complex_example_with_perturb ${CGAL_LIBRARY} ${Boost_DATE_TIME_LIBRARY})
+  target_link_libraries(Tangential_complex_example_with_perturb ${CGAL_LIBRARY})
   if (TBB_FOUND)
     target_link_libraries(Tangential_complex_example_basic ${TBB_LIBRARIES})
     target_link_libraries(Tangential_complex_example_with_perturb ${TBB_LIBRARIES})
diff --git a/src/Tangential_complex/test/CMakeLists.txt b/src/Tangential_complex/test/CMakeLists.txt
index 63e51c3e..1948c8f6 100644
--- a/src/Tangential_complex/test/CMakeLists.txt
+++ b/src/Tangential_complex/test/CMakeLists.txt
@@ -5,7 +5,7 @@ if (NOT CGAL_WITH_EIGEN3_VERSION VERSION_LESS 4.8.1)
   include(GUDHI_test_coverage)
 
   add_executable( Tangential_complex_test_TC test_tangential_complex.cpp )
-  target_link_libraries(Tangential_complex_test_TC ${CGAL_LIBRARY} ${Boost_UNIT_TEST_FRAMEWORK_LIBRARY}  ${Boost_DATE_TIME_LIBRARY})
+  target_link_libraries(Tangential_complex_test_TC ${CGAL_LIBRARY} ${Boost_UNIT_TEST_FRAMEWORK_LIBRARY})
   if (TBB_FOUND)
     target_link_libraries(Tangential_complex_test_TC ${TBB_LIBRARIES})
   endif()
diff --git a/src/cmake/modules/GUDHI_third_party_libraries.cmake b/src/cmake/modules/GUDHI_third_party_libraries.cmake
index 2be79ee4..8f486118 100644
--- a/src/cmake/modules/GUDHI_third_party_libraries.cmake
+++ b/src/cmake/modules/GUDHI_third_party_libraries.cmake
@@ -1,6 +1,6 @@
 # This files manage third party libraries required by GUDHI
 
-find_package(Boost REQUIRED COMPONENTS system filesystem unit_test_framework date_time program_options thread)
+find_package(Boost REQUIRED COMPONENTS system filesystem unit_test_framework program_options thread)
 
 if(NOT Boost_FOUND)
   message(FATAL_ERROR "NOTICE: This program requires Boost and will not be compiled.")
diff --git a/src/common/include/gudhi/Clock.h b/src/common/include/gudhi/Clock.h
index 77f196ca..eff48e41 100644
--- a/src/common/include/gudhi/Clock.h
+++ b/src/common/include/gudhi/Clock.h
@@ -23,9 +23,9 @@
 #ifndef CLOCK_H_
 #define CLOCK_H_
 
-#include <boost/date_time/posix_time/posix_time.hpp>
-
+#include <iostream>
 #include <string>
+#include <chrono>
 
 namespace Gudhi {
 
@@ -33,20 +33,20 @@ class Clock {
  public:
   // Construct and start the timer
   Clock(const std::string& msg_ = std::string())
-      : startTime(boost::posix_time::microsec_clock::local_time()),
+      : startTime(std::chrono::system_clock::now()),
       end_called(false),
       msg(msg_) { }
 
   // Restart the timer
   void begin() const {
     end_called = false;
-    startTime = boost::posix_time::microsec_clock::local_time();
+    startTime = std::chrono::system_clock::now();
   }
 
   // Stop the timer
   void end() const {
     end_called = true;
-    endTime = boost::posix_time::microsec_clock::local_time();
+    endTime = std::chrono::system_clock::now();
   }
 
   std::string message() const {
@@ -71,15 +71,15 @@ class Clock {
   // - or now otherwise. In this case, the timer is not stopped.
   double num_seconds() const {
     if (!end_called) {
-      auto end = boost::posix_time::microsec_clock::local_time();
-      return (end - startTime).total_milliseconds() / 1000.;
+      auto end = std::chrono::system_clock::now();
+      return std::chrono::duration_cast<std::chrono::milliseconds>(end-startTime).count() / 1000.;
     } else {
-      return (endTime - startTime).total_milliseconds() / 1000.;
+      return std::chrono::duration_cast<std::chrono::milliseconds>(endTime-startTime).count() / 1000.;
     }
   }
 
  private:
-  mutable boost::posix_time::ptime startTime, endTime;
+  mutable std::chrono::time_point<std::chrono::system_clock> startTime, endTime;
   mutable bool end_called;
   std::string msg;
 };