From 4a9eedd4daf0dbaa3567516275932d16b2ec0f85 Mon Sep 17 00:00:00 2001
From: kronbichler <kronbichler@0785d39b-7218-0410-832d-ea1e28bc413d>
Date: Fri, 17 Apr 2009 09:50:18 +0000
Subject: [PATCH] Make TimerOutput really thread-safe.

git-svn-id: https://svn.dealii.org/trunk@18639 0785d39b-7218-0410-832d-ea1e28bc413d
---
 deal.II/base/include/base/timer.h |  9 +++++++++
 deal.II/base/source/timer.cc      | 18 +++++++-----------
 2 files changed, 16 insertions(+), 11 deletions(-)

diff --git a/deal.II/base/include/base/timer.h b/deal.II/base/include/base/timer.h
index ada33f4056..ca90e4f765 100644
--- a/deal.II/base/include/base/timer.h
+++ b/deal.II/base/include/base/timer.h
@@ -15,6 +15,7 @@
 
 #include <base/config.h>
 #include <base/conditional_ostream.h>
+#include <base/thread_management.h>
 
 #ifdef DEAL_II_COMPILER_SUPPORTS_MPI
 #include <mpi.h>
@@ -370,6 +371,14 @@ class TimerOutput
 				      */
     MPI_Comm            mpi_communicator;
 #endif
+
+				     /**
+				      * A lock that makes sure that this
+				      * class gives reasonable results even
+				      * when used with several threads.
+				      */
+
+    Threads::ThreadMutex mutex;
 };
 
 DEAL_II_NAMESPACE_CLOSE
diff --git a/deal.II/base/source/timer.cc b/deal.II/base/source/timer.cc
index b442e66345..48d91776a6 100644
--- a/deal.II/base/source/timer.cc
+++ b/deal.II/base/source/timer.cc
@@ -22,8 +22,6 @@
 #include <sys/time.h>
 #include <sys/resource.h>
 
-#include <base/thread_management.h>
-
 
 // on SunOS 4.x, getrusage is stated in the man pages and exists, but
 // is not declared in resource.h. declare it ourselves
@@ -272,8 +270,7 @@ TimerOutput::~TimerOutput()
 void 
 TimerOutput::enter_section (const std::string &section_name)
 {
-  Threads::Mutex mutex;
-  Threads::Mutex::ScopedLock lock (mutex);
+  Threads::ThreadMutex::ScopedLock lock (mutex);
 
   Assert (section_name.empty() == false,
 	  ExcMessage ("Section string is empty."));
@@ -301,8 +298,7 @@ TimerOutput::enter_section (const std::string &section_name)
 void 
 TimerOutput::exit_section (const std::string &section_name)
 {
-  Threads::Mutex mutex;
-  Threads::Mutex::ScopedLock lock (mutex);
+  Threads::ThreadMutex::ScopedLock lock (mutex);
 
   if (section_name != "")
     {
@@ -430,7 +426,7 @@ TimerOutput::print_summary ()
       std::cout.width(10);
       std::cout.precision(3);
       out_stream << "  CPU time "  << " | % of total |\n";
-      out_stream << "+---------------------------------------------+------------"
+      out_stream << "+---------------------------------+-----------+------------"
 		 << "+------------+";
       for (std::map<std::string, Section>::const_iterator
 	     i = sections.begin(); i!=sections.end(); ++i)
@@ -455,7 +451,7 @@ TimerOutput::print_summary ()
 	  out_stream << i->second.total_cpu_time/total_cpu_time * 100 << "% |";
 	}
       out_stream << std::endl
-		 << "+---------------------------------------------+"
+		 << "+---------------------------------+-----------+"
 		 << "------------+------------+\n"
 		 << std::endl;
 
@@ -488,7 +484,7 @@ TimerOutput::print_summary ()
       out_stream << "\n\n"
 		 << "+---------------------------------------------+------------"
 		 << "+------------+\n"
-		 << "| Total wallclock time elapsed from start     |";
+		 << "| Total wallclock time elapsed since start    |";
       std::cout.width(10);
       std::cout.precision(3);
       out_stream << total_wall_time << "s |            |\n";
@@ -498,7 +494,7 @@ TimerOutput::print_summary ()
       std::cout.width(10);
       std::cout.precision(3);
       out_stream << "  wall time | % of total |\n";
-      out_stream << "+---------------------------------------------+------------"
+      out_stream << "+---------------------------------+-----------+------------"
 		 << "+------------+";
       for (std::map<std::string, Section>::const_iterator
 	     i = sections.begin(); i!=sections.end(); ++i)
@@ -523,7 +519,7 @@ TimerOutput::print_summary ()
 	  out_stream << i->second.total_wall_time/total_wall_time * 100 << "% |";
 	}
       out_stream << std::endl
-		 << "+---------------------------------------------+"
+		 << "+---------------------------------+-----------+"
 		 << "------------+------------+\n"
 		 << std::endl;
 
-- 
2.39.5