- Let the user disable the new GCC 4.0 visibility support

from configure. This is mainly there for buggy compilers / binutils.


git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@715 3ecf2c5c-341e-0410-92b4-d18e462d057c
This commit is contained in:
tchernobog 2006-07-04 22:17:02 +00:00
parent 4108b39c09
commit fcc9e93827
5 changed files with 103 additions and 53 deletions

View File

@ -101,18 +101,31 @@ AH_TEMPLATE([SG_DLLIMPORT],[Attribute for objects to be imported from DSOs])
AH_TEMPLATE([SG_DLLLOCAL], [Attribute for objects local to current DSO])
AH_TEMPLATE([SG_DLLPUBLIC],[Attribute for DSO public objects])
AC_ARG_ENABLE([visibility-support],
AS_HELP_STRING([--disable-visibility-support],
[disable the new GCC visibility support]),
[enable_gcc_visibility="$enableval"],
[enable_gcc_visibility="yes"])
AC_MSG_CHECKING([whether to use new GCC visibility attributes])
dnl for now it works only with GCC >= 4.0.0
AC_MSG_CHECKING([whether GCC supports DSO visibility attributes])
AC_LANG_PUSH([C++])
AC_COMPILE_IFELSE(
AC_LANG_PROGRAM([], [
#if defined __GNUC__ && (__GNUC__) >= 4
return 0;
#else
bails out with a compilation error.
#endif
]),[
AC_MSG_RESULT([yes])
if test "x$enable_gcc_visibility" = "xyes"; then
AC_COMPILE_IFELSE(
AC_LANG_PROGRAM([], [
#if defined __GNUC__ && (__GNUC__) >= 4
return 0;
#else
bails out with a compilation error.
#endif
]),
:,
[enable_gcc_visibility="no"])
fi
AC_LANG_POP
if test "x$enable_gcc_visibility" = "xyes"; then
AC_MSG_RESULT([yes])
AC_DEFINE([SG_DLLIMPORT],[/* intentionally left with no value */])
AC_DEFINE([SG_DLLEXPORT],[__attribute__ ((visibility("default")))])
AC_DEFINE([SG_DLLLOCAL],[__attribute__ ((visibility("hidden")))])
@ -121,14 +134,13 @@ AC_COMPILE_IFELSE(
AC_CHECK_CXXFLAG([VISIB_HIDDEN], [fvisibility=hidden])
AC_SUBST([VISIB_HIDDEN])
AC_CHECK_CXXFLAG([CXXFLAGS],[fvisibility-inlines-hidden])
],[
else
AC_MSG_RESULT([no])
AC_DEFINE([SG_DLLIMPORT],[/* unsupported */])
AC_DEFINE([SG_DLLEXPORT],[/* unsupported */])
AC_DEFINE([SG_DLLLOCAL],[/* unsupported */])
AC_DEFINE([SG_DLLPUBLIC],[/* unsupported */])
])
AC_LANG_POP
fi
dnl check for Doxygen
AC_CHECK_PROG([HAVE_DOXYGEN],[doxygen],[yes])

View File

@ -111,18 +111,31 @@ AH_TEMPLATE([SG_DLLIMPORT],[Attribute for objects to be imported from DSOs])
AH_TEMPLATE([SG_DLLLOCAL], [Attribute for objects local to current DSO])
AH_TEMPLATE([SG_DLLPUBLIC],[Attribute for DSO public objects])
AC_ARG_ENABLE([visibility-support],
AS_HELP_STRING([--disable-visibility-support],
[disable the new GCC visibility support]),
[enable_gcc_visibility="$enableval"],
[enable_gcc_visibility="yes"])
AC_MSG_CHECKING([whether to use new GCC visibility attributes])
dnl for now it works only with GCC >= 4.0.0
AC_MSG_CHECKING([whether GCC supports DSO visibility attributes])
AC_LANG_PUSH([C++])
AC_COMPILE_IFELSE(
AC_LANG_PROGRAM([], [
#if defined __GNUC__ && (__GNUC__) >= 4
return 0;
#else
bails out with a compilation error.
#endif
]),[
AC_MSG_RESULT([yes])
if test "x$enable_gcc_visibility" = "xyes"; then
AC_COMPILE_IFELSE(
AC_LANG_PROGRAM([], [
#if defined __GNUC__ && (__GNUC__) >= 4
return 0;
#else
bails out with a compilation error.
#endif
]),
:,
[enable_gcc_visibility="no"])
fi
AC_LANG_POP
if test "x$enable_gcc_visibility" = "xyes"; then
AC_MSG_RESULT([yes])
AC_DEFINE([SG_DLLIMPORT],[/* intentionally left with no value */])
AC_DEFINE([SG_DLLEXPORT],[__attribute__ ((visibility("default")))])
AC_DEFINE([SG_DLLLOCAL],[__attribute__ ((visibility("hidden")))])
@ -131,14 +144,14 @@ AC_COMPILE_IFELSE(
AC_CHECK_CXXFLAG([VISIB_HIDDEN], [fvisibility=hidden])
AC_SUBST([VISIB_HIDDEN])
AC_CHECK_CXXFLAG([CXXFLAGS],[fvisibility-inlines-hidden])
],[
else
AC_MSG_RESULT([no])
AC_DEFINE([SG_DLLIMPORT],[/* unsupported */])
AC_DEFINE([SG_DLLEXPORT],[/* unsupported */])
AC_DEFINE([SG_DLLLOCAL],[/* unsupported */])
AC_DEFINE([SG_DLLPUBLIC],[/* unsupported */])
])
AC_LANG_POP
fi
dnl see if we've to compile tests
AC_MSG_CHECKING([whether tests have to be built])

View File

@ -100,6 +100,7 @@ PKG_CHECK_MODULES([LIBXML2],
[libxml-2.0 >= $LIBXML2_VERSION],
:, AC_MSG_ERROR([$LIBXML2_PKG_ERRORS]))
dnl use DSO visibility tags for systems that supports it correctly
dnl (for example, GCC 4.0 and above)
dnl see http://gcc.gnu.org/wiki/Visibility for more informations
@ -108,18 +109,31 @@ AH_TEMPLATE([SG_DLLIMPORT],[Attribute for objects to be imported from DSOs])
AH_TEMPLATE([SG_DLLLOCAL], [Attribute for objects local to current DSO])
AH_TEMPLATE([SG_DLLPUBLIC],[Attribute for DSO public objects])
AC_ARG_ENABLE([visibility-support],
AS_HELP_STRING([--disable-visibility-support],
[disable the new GCC visibility support]),
[enable_gcc_visibility="$enableval"],
[enable_gcc_visibility="yes"])
AC_MSG_CHECKING([whether to use new GCC visibility attributes])
dnl for now it works only with GCC >= 4.0.0
AC_MSG_CHECKING([whether GCC supports DSO visibility attributes])
AC_LANG_PUSH([C++])
AC_COMPILE_IFELSE(
AC_LANG_PROGRAM([], [
#if defined __GNUC__ && (__GNUC__) >= 4
return 0;
#else
bails out with a compilation error.
#endif
]),[
AC_MSG_RESULT([yes])
if test "x$enable_gcc_visibility" = "xyes"; then
AC_COMPILE_IFELSE(
AC_LANG_PROGRAM([], [
#if defined __GNUC__ && (__GNUC__) >= 4
return 0;
#else
bails out with a compilation error.
#endif
]),
:,
[enable_gcc_visibility="no"])
fi
AC_LANG_POP
if test "x$enable_gcc_visibility" = "xyes"; then
AC_MSG_RESULT([yes])
AC_DEFINE([SG_DLLIMPORT],[/* intentionally left with no value */])
AC_DEFINE([SG_DLLEXPORT],[__attribute__ ((visibility("default")))])
AC_DEFINE([SG_DLLLOCAL],[__attribute__ ((visibility("hidden")))])
@ -128,14 +142,14 @@ AC_COMPILE_IFELSE(
AC_CHECK_CXXFLAG([VISIB_HIDDEN], [fvisibility=hidden])
AC_SUBST([VISIB_HIDDEN])
AC_CHECK_CXXFLAG([CXXFLAGS],[fvisibility-inlines-hidden])
],[
else
AC_MSG_RESULT([no])
AC_DEFINE([SG_DLLIMPORT],[/* unsupported */])
AC_DEFINE([SG_DLLEXPORT],[/* unsupported */])
AC_DEFINE([SG_DLLLOCAL],[/* unsupported */])
AC_DEFINE([SG_DLLPUBLIC],[/* unsupported */])
])
AC_LANG_POP
fi
dnl see if we've to compile tests
AC_MSG_CHECKING([whether tests have to be built])

View File

@ -29,7 +29,9 @@
#include <glibmm/thread.h>
#include <cassert>
#include <memory>
using namespace std;
using namespace sgpem;
@ -56,6 +58,22 @@ collect_threads(const std::vector<Process*>& procs,
}
}
static void prepare_ready_queue(ConcreteEnvironment& snapshot,
std::vector<DynamicThread*>& all_threads)
{
typedef std::vector<DynamicThread*> Threads;
ReadyQueue& queue = snapshot.get_sorted_queue();
assert(queue.size() == 0);
for(Threads::const_iterator it = all_threads.begin();
it != all_threads.end(); it++)
{
if((*it)->get_state() == Schedulable::state_ready)
all_threads.push_back(*it);
}
}
// ---------------------------------------------------------
@ -201,8 +219,7 @@ Scheduler::step_forward(History& history, Policy& cpu_policy) throw(UserInterrup
// (is it visible enough for you?)
ReadyQueue& ready_queue = new_snapshot->get_sorted_queue();
prepare_ready_queue(ready_queue);
prepare_ready_queue(*new_snapshot, all_threads);
try
{
// Temporarily set the _ready_queue param and the _policy one for
@ -210,7 +227,6 @@ Scheduler::step_forward(History& history, Policy& cpu_policy) throw(UserInterrup
_policy = &cpu_policy;
_ready_queue = &new_snapshot->get_sorted_queue();
// ?. Use the policy to sort the queue
// FIXME: how does it get the queue?
@ -218,10 +234,11 @@ Scheduler::step_forward(History& history, Policy& cpu_policy) throw(UserInterrup
}
catch(UserInterruptException& e)
{
// Reset values that the policy doesn't need anymore
_policy = NULL;
_ready_queue = NULL;
// ^^^^^
// Do we need to update something else?
// Do we need to update/reset something else?
// Going up unwinding the stack, tell:
// - the user that the policy sucks
@ -232,14 +249,10 @@ Scheduler::step_forward(History& history, Policy& cpu_policy) throw(UserInterrup
// append the new snapshot...
// ...and remember to release the auto_ptr!
concrete_history.append_new_environment(new_snapshot.release());
// Reset values that the policy doesn't need anymore
_policy = NULL;
_ready_queue = NULL;
}
void
Scheduler::prepare_ready_queue(ReadyQueue& queue)
{
}

View File

@ -87,9 +87,7 @@ namespace sgpem
*/
Policy& get_policy();
private:
void prepare_ready_queue(ReadyQueue& queue);
private:
Scheduler(); //private constructor.
ReadyQueue* _ready_queue;