From 78a1c0cb85586aedca9de962789147c7a0a3031d Mon Sep 17 00:00:00 2001
From: Markus Gans <guru@server.home.net>
Date: Thu, 15 Oct 2015 02:37:02 +0200
Subject: [PATCH] better profiling

---
 build.sh              |  5 ++++
 configure             | 55 +++++++++++++++++++++++++++++++++++++++++++
 configure.ac          | 12 ++++++++++
 scripts/cpuprofile.sh |  1 +
 src/fconfig.h         |  4 ++--
 5 files changed, 75 insertions(+), 2 deletions(-)

diff --git a/build.sh b/build.sh
index 562d7c65..2f64f28e 100755
--- a/build.sh
+++ b/build.sh
@@ -16,6 +16,10 @@ case "$1" in
     ./configure --prefix="$PREFIX" CPPFLAGS="-DDEBUG" CXXFLAGS="-g -pg -O0 -DDEBUG -W -Wall -pedantic"
     ;;
 
+  "--cpu-profiler"|"cpu-profiler")
+    ./configure --prefix="$PREFIX" --with-profiler
+    ;;
+
   "--gcov"|"gcov")
     ./configure --prefix="$PREFIX" CXXFLAGS="-fprofile-arcs -ftest-coverage"
     ;;
@@ -33,6 +37,7 @@ case "$1" in
     echo "  debug         Compile with debug option"
     echo "  fulldebug     Compile with all warning options"
     echo "  profile       Compile with profile option (analysis with gprof)"
+    echo "  cpu-profiler  Link with Google cpu performance profiler"
     echo "  gcov          Compile with options for coverage analysis with gcov"
     echo "  release       Compile for release"
     exit 1
diff --git a/configure b/configure
index 0baee7bc..1f7f4f6f 100755
--- a/configure
+++ b/configure
@@ -767,6 +767,7 @@ with_gnu_ld
 with_sysroot
 enable_libtool_lock
 with_gpm
+with_profiler
 '
       ac_precious_vars='build_alias
 host_alias
@@ -1420,6 +1421,7 @@ Optional Packages:
   --with-sysroot=DIR Search for dependent libraries within DIR
                         (or the compiler's sysroot if not specified).
   --without-gpm           Disable GPM mouse support
+  --with-profiler         build extra google profiler binaries
 
 Some influential environment variables:
   CC          C compiler command
@@ -16906,6 +16908,59 @@ $as_echo "#define HAVE_LIBGPM 1" >>confdefs.h
 
 fi
 
+# profiling
+
+# Check whether --with-profiler was given.
+if test "${with_profiler+set}" = set; then :
+  withval=$with_profiler; with_profiler=yes
+else
+  with_profiler=no
+fi
+
+if test "x$with_profiler" = "xyes"
+then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ProfilerFlush in -lprofiler" >&5
+$as_echo_n "checking for ProfilerFlush in -lprofiler... " >&6; }
+if ${ac_cv_lib_profiler_ProfilerFlush+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lprofiler  $LIBS"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char ProfilerFlush ();
+int
+main ()
+{
+return ProfilerFlush ();
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_profiler_ProfilerFlush=yes
+else
+  ac_cv_lib_profiler_ProfilerFlush=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_profiler_ProfilerFlush" >&5
+$as_echo "$ac_cv_lib_profiler_ProfilerFlush" >&6; }
+if test "x$ac_cv_lib_profiler_ProfilerFlush" = xyes; then :
+  LIBS="$LIBS -lprofiler"
+fi
+
+fi
+
 cat >confcache <<\_ACEOF
 # This file is a shell script that caches the results of configure
 # tests run on this system so they can be shared between configure
diff --git a/configure.ac b/configure.ac
index 10c5a439..10ed6248 100644
--- a/configure.ac
+++ b/configure.ac
@@ -69,4 +69,16 @@ then
   AC_DEFINE([HAVE_LIBGPM], 1, [Define to 1 if GPM mouse is enabled])
 fi
 
+# profiling
+AC_ARG_WITH([profiler],
+            [AS_HELP_STRING([--with-profiler], [build extra google profiler binaries])],
+ 	    [with_profiler=yes],
+            [with_profiler=no])
+if test "x$with_profiler" = "xyes"
+then
+  AC_CHECK_LIB([profiler],
+               [ProfilerFlush],
+               [LIBS="$LIBS -lprofiler"])
+fi
+
 AC_OUTPUT
diff --git a/scripts/cpuprofile.sh b/scripts/cpuprofile.sh
index 3f407ffc..18941373 100755
--- a/scripts/cpuprofile.sh
+++ b/scripts/cpuprofile.sh
@@ -2,4 +2,5 @@
 
 LD_LIBRARY_PATH=../src/.libs/ LD_PRELOAD="/usr/lib64/libprofiler.so.0" CPUPROFILE=../test/.libs/ui.prof ../test/.libs/ui
 pprof --gv ../test/.libs/ui ../test/.libs/ui.prof
+rm -f ../test/.libs/ui.prof
 
diff --git a/src/fconfig.h b/src/fconfig.h
index fcb80772..6bbb1b4f 100644
--- a/src/fconfig.h
+++ b/src/fconfig.h
@@ -1,6 +1,6 @@
 #ifndef _SRC_FCONFIG_H
 #define _SRC_FCONFIG_H 1
-
+ 
 /* src/fconfig.h. Generated automatically at end of configure. */
 /* config.h.  Generated from config.h.in by configure.  */
 /* config.h.in.  Generated from configure.ac by autoheader.  */
@@ -171,6 +171,6 @@
 #ifndef F_VERSION
 #define F_VERSION "0.1.1"
 #endif
-
+ 
 /* once: _SRC_FCONFIG_H */
 #endif