return 0 (meaning the file is not seekable, as the docs now explain) instead of 4KB...

[wxWidgets.git] / tests / benchmarks / printfbench.cpp

diff --git a/tests/benchmarks/printfbench.cpp b/tests/benchmarks/printfbench.cpp
index 4fa8c3dbee8601f61b2935f0b140ffbfc8fc72db..f4c2ffb9b56176bc7fe28b64e4dd715d03e6672f 100644 (file)
--- a/tests/benchmarks/printfbench.cpp
+++ b/tests/benchmarks/printfbench.cpp
@@ -9,6 +9,32 @@
 // Licence:     wxWindows license
 /////////////////////////////////////////////////////////////////////////////
 
+//
+// Profiling under Linux:
+// =====================
+//
+//   1) configure wxWidgets in release mode
+//   2) make sure that HAVE_UNIX98_PRINTF is undefined (just #defining it to zero
+//      does not work; you must comment out the entire #define) in your setup.h;
+//      and also that wxUSE_PRINTF_POS_PARAMS is set to 1; this will force the
+//      use of wx's own implementation of wxVsnprintf()
+//   3) compile wx
+//   4) set wxTEST_WX_ONLY to 1 and compile tests as well
+//
+// Now you have two main choices:
+//
+//  - using gprof:
+//      5) add to the Makefile of this test program the -pg option both to
+//         CXXFLAGS and to LDFLAGS
+//      6) run the test
+//      7) look at the gmon.out file with gprof utility
+//
+//  - using valgrind:
+//      4) run "valgrind --tool=callgrind ./printfbench"
+//      5) run "kcachegrind dump_file_generated_by_callgrind"
+//
+
+
 // ============================================================================
 // declarations
 // ============================================================================
@@ -31,22 +57,23 @@
 #include <wx/utils.h>
 #include <wx/cmdline.h>
 #include <wx/app.h>
+#include <wx/wxchar.h>
 
 
 // ----------------------------------------------------------------------------
 // command line
 // ----------------------------------------------------------------------------
 
-#define HELP_SWITCH              wxT("h")
-#define NUMBENCHMARK_OPTION           wxT("n")
+#define HELP_SWITCH                   "h"
+#define NUMBENCHMARK_OPTION           "n"
 
 static const wxCmdLineEntryDesc g_cmdLineDesc[] =
 {
-    { wxCMD_LINE_SWITCH, HELP_SWITCH, wxT("help"),
-      wxT("displays help on the command line parameters") },
+    { wxCMD_LINE_SWITCH, HELP_SWITCH, "help",
+      "displays help on the command line parameters" },
 
-    { wxCMD_LINE_OPTION, NUMBENCHMARK_OPTION, wxT("numtest"),
-      wxT("the number of wxPrintf() calls to benchmark"), wxCMD_LINE_VAL_NUMBER },
+    { wxCMD_LINE_OPTION, NUMBENCHMARK_OPTION, "numtest",
+      "the number of wxPrintf() calls to benchmark", wxCMD_LINE_VAL_NUMBER },
 
     { wxCMD_LINE_NONE }
 };
@@ -60,18 +87,6 @@ static const wxCmdLineEntryDesc g_cmdLineDesc[] =
 #define BUFSIZE                  10000
 
 // set wxTEST_WX_ONLY to 1 when you want to profile wx's implementation only.
-// A little reminder about profiling under Linux:
-//
-//   1) configure wxWidgets in release mode
-//   2) make sure that HAVE_UNIX98_PRINTF is undefined (just #defining it to zero
-//      does not work; you must comment out the entire #define) in your setup.h;
-//      and also that wxUSE_PRINTF_POS_PARAMS is set to 1; this will force the
-//      use of wx's own implementation of wxVsnprintf()
-//   3) compile wx
-//   4) set wxTEST_WX_ONLY to 1 and compile tests as well
-//   5) run "callgrind ./printfbench"
-//   6) run "kcachegrind dump_file_generated_by_callgrind"
-//
 #define wxTEST_WX_ONLY           1