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PR libstdc++/51798 continued.

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2012-02-10  Benjamin Kosnik  <bkoz@redhat.com>
            Jonathan Wakely  <jwakely.gcc@gmail.com>

	PR libstdc++/51798 continued.
	* acinclude.m4 (GLIBCXX_ENABLE_ATOMIC_BUILTINS): Use __atomic_*
	builtins instead of __sync_* builtins for atomic functionality.
	* include/bits/shared_ptr_base.h: Same.
	* include/parallel/compatibility.h: Same.
	* include/profile/impl/profiler_state.h: Same.
	* include/tr1/shared_ptr.h: Same.
	* libsupc++/eh_ptr.cc: Same.
	* libsupc++/eh_throw.cc: Same.
	* libsupc++/eh_tm.cc: Same.
	* libsupc++/guard.cc: Same.
	* configure: Regenerated.
	* testsuite/20_util/shared_ptr/cons/43820_neg.cc: Adjust line numbers.

Co-Authored-By: Jonathan Wakely <jwakely.gcc@gmail.com>

From-SVN: r184110
This commit is contained in:
Benjamin Kosnik 2012-02-10 18:20:43 +00:00 • committed by Benjamin Kosnik
parent 6c9b75b061
commit 75cee7c62a
13 changed files with 219 additions and 161 deletions
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18
libstdc++-v3/ChangeLog
View file

@ -1,3 +1,21 @@
2012-02-10 Benjamin Kosnik <bkoz@redhat.com>
Jonathan Wakely <jwakely.gcc@gmail.com>
PR libstdc++/51798 continued.
* acinclude.m4 (GLIBCXX_ENABLE_ATOMIC_BUILTINS): Use __atomic_*
builtins instead of __sync_* builtins for atomic functionality.
* include/bits/shared_ptr_base.h: Same.
* include/parallel/compatibility.h: Same.
* include/profile/impl/profiler_state.h: Same.
* include/tr1/shared_ptr.h: Same.
* libsupc++/eh_ptr.cc: Same.
* libsupc++/eh_throw.cc: Same.
* libsupc++/eh_tm.cc: Same.
* libsupc++/guard.cc: Same.
* configure: Regenerated.
* testsuite/20_util/shared_ptr/cons/43820_neg.cc: Adjust line numbers.
* testsuite/tr1/2_general_utilities/shared_ptr/cons/43820_neg.cc: Same.
2012-02-10 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
PR libstdc++/51296

113
libstdc++-v3/acinclude.m4
View file

@ -2685,7 +2685,7 @@ AC_DEFUN([GLIBCXX_ENABLE_PCH], [
dnl
dnl Check for atomic builtins.
dnl See:
dnl http://gcc.gnu.org/onlinedocs/gcc/Atomic-Builtins.html#Atomic-Builtins
dnl http://gcc.gnu.org/onlinedocs/gcc/_005f_005fatomic-Builtins.html
dnl
dnl This checks to see if the host supports the compiler-generated
dnl builtins for atomic operations for various integral sizes. Note, this
@ -2726,12 +2726,13 @@ AC_DEFUN([GLIBCXX_ENABLE_ATOMIC_BUILTINS], [
[typedef bool atomic_type;
atomic_type c1;
atomic_type c2;
const atomic_type c3(0);
__sync_fetch_and_add(&c1, c2);
__sync_val_compare_and_swap(&c1, c3, c2);
__sync_lock_test_and_set(&c1, c3);
__sync_lock_release(&c1);
__sync_synchronize();],
atomic_type c3(0);
__atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
__atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
__ATOMIC_RELAXED);
__atomic_test_and_set(&c1, __ATOMIC_RELAXED);
__atomic_load_n(&c1, __ATOMIC_RELAXED);
],
[glibcxx_cv_atomic_bool=yes],
[glibcxx_cv_atomic_bool=no])
])
@ -2744,12 +2745,13 @@ AC_DEFUN([GLIBCXX_ENABLE_ATOMIC_BUILTINS], [
[typedef short atomic_type;
atomic_type c1;
atomic_type c2;
const atomic_type c3(0);
__sync_fetch_and_add(&c1, c2);
__sync_val_compare_and_swap(&c1, c3, c2);
__sync_lock_test_and_set(&c1, c3);
__sync_lock_release(&c1);
__sync_synchronize();],
atomic_type c3(0);
__atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
__atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
__ATOMIC_RELAXED);
__atomic_test_and_set(&c1, __ATOMIC_RELAXED);
__atomic_load_n(&c1, __ATOMIC_RELAXED);
],
[glibcxx_cv_atomic_short=yes],
[glibcxx_cv_atomic_short=no])
])
@ -2762,12 +2764,13 @@ AC_DEFUN([GLIBCXX_ENABLE_ATOMIC_BUILTINS], [
[typedef int atomic_type;
atomic_type c1;
atomic_type c2;
const atomic_type c3(0);
__sync_fetch_and_add(&c1, c2);
__sync_val_compare_and_swap(&c1, c3, c2);
__sync_lock_test_and_set(&c1, c3);
__sync_lock_release(&c1);
__sync_synchronize();],
atomic_type c3(0);
__atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
__atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
__ATOMIC_RELAXED);
__atomic_test_and_set(&c1, __ATOMIC_RELAXED);
__atomic_load_n(&c1, __ATOMIC_RELAXED);
],
[glibcxx_cv_atomic_int=yes],
[glibcxx_cv_atomic_int=no])
])
@ -2780,12 +2783,13 @@ AC_DEFUN([GLIBCXX_ENABLE_ATOMIC_BUILTINS], [
[typedef long long atomic_type;
atomic_type c1;
atomic_type c2;
const atomic_type c3(0);
__sync_fetch_and_add(&c1, c2);
__sync_val_compare_and_swap(&c1, c3, c2);
__sync_lock_test_and_set(&c1, c3);
__sync_lock_release(&c1);
__sync_synchronize();],
atomic_type c3(0);
__atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
__atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
__ATOMIC_RELAXED);
__atomic_test_and_set(&c1, __ATOMIC_RELAXED);
__atomic_load_n(&c1, __ATOMIC_RELAXED);
],
[glibcxx_cv_atomic_long_long=yes],
[glibcxx_cv_atomic_long_long=no])
])
@ -2807,12 +2811,13 @@ int main()
typedef bool atomic_type;
atomic_type c1;
atomic_type c2;
const atomic_type c3(0);
__sync_fetch_and_add(&c1, c2);
__sync_val_compare_and_swap(&c1, c3, c2);
__sync_lock_test_and_set(&c1, c3);
__sync_lock_release(&c1);
__sync_synchronize();
atomic_type c3(0);
__atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
__atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
__ATOMIC_RELAXED);
__atomic_test_and_set(&c1, __ATOMIC_RELAXED);
__atomic_load_n(&c1, __ATOMIC_RELAXED);
return 0;
}
EOF
@ -2835,12 +2840,13 @@ int main()
typedef short atomic_type;
atomic_type c1;
atomic_type c2;
const atomic_type c3(0);
__sync_fetch_and_add(&c1, c2);
__sync_val_compare_and_swap(&c1, c3, c2);
__sync_lock_test_and_set(&c1, c3);
__sync_lock_release(&c1);
__sync_synchronize();
atomic_type c3(0);
__atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
__atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
__ATOMIC_RELAXED);
__atomic_test_and_set(&c1, __ATOMIC_RELAXED);
__atomic_load_n(&c1, __ATOMIC_RELAXED);
return 0;
}
EOF
@ -2864,12 +2870,13 @@ int main()
typedef int atomic_type;
atomic_type c1;
atomic_type c2;
const atomic_type c3(0);
__sync_fetch_and_add(&c1, c2);
__sync_val_compare_and_swap(&c1, c3, c2);
__sync_lock_test_and_set(&c1, c3);
__sync_lock_release(&c1);
__sync_synchronize();
atomic_type c3(0);
__atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
__atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
__ATOMIC_RELAXED);
__atomic_test_and_set(&c1, __ATOMIC_RELAXED);
__atomic_load_n(&c1, __ATOMIC_RELAXED);
return 0;
}
EOF
@ -2892,12 +2899,13 @@ int main()
typedef long long atomic_type;
atomic_type c1;
atomic_type c2;
const atomic_type c3(0);
__sync_fetch_and_add(&c1, c2);
__sync_val_compare_and_swap(&c1, c3, c2);
__sync_lock_test_and_set(&c1, c3);
__sync_lock_release(&c1);
__sync_synchronize();
atomic_type c3(0);
__atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
__atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
__ATOMIC_RELAXED);
__atomic_test_and_set(&c1, __ATOMIC_RELAXED);
__atomic_load_n(&c1, __ATOMIC_RELAXED);
return 0;
}
EOF
@ -2918,8 +2926,11 @@ EOF
CXXFLAGS="$old_CXXFLAGS"
AC_LANG_RESTORE
# Set atomicity_dir to builtins if either of above tests pass.
if test $glibcxx_cv_atomic_int = yes || test $glibcxx_cv_atomic_bool = yes ; then
# Set atomicity_dir to builtins if all of above tests pass.
if test $glibcxx_cv_atomic_bool = yes \
&& test $glibcxx_cv_atomic_short = yes \
&& test $glibcxx_cv_atomic_int = yes \
&& test $glibcxx_cv_atomic_long_long = yes ; then
AC_DEFINE(_GLIBCXX_ATOMIC_BUILTINS, 1,
[Define if the compiler supports C++11 atomics.])
atomicity_dir=cpu/generic/atomicity_builtins

125
libstdc++-v3/configure vendored
View file

@ -15125,12 +15125,13 @@ main ()
typedef bool atomic_type;
atomic_type c1;
atomic_type c2;
const atomic_type c3(0);
__sync_fetch_and_add(&c1, c2);
__sync_val_compare_and_swap(&c1, c3, c2);
__sync_lock_test_and_set(&c1, c3);
__sync_lock_release(&c1);
__sync_synchronize();
atomic_type c3(0);
__atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
__atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
__ATOMIC_RELAXED);
__atomic_test_and_set(&c1, __ATOMIC_RELAXED);
__atomic_load_n(&c1, __ATOMIC_RELAXED);
;
return 0;
}
@ -15166,12 +15167,13 @@ main ()
typedef short atomic_type;
atomic_type c1;
atomic_type c2;
const atomic_type c3(0);
__sync_fetch_and_add(&c1, c2);
__sync_val_compare_and_swap(&c1, c3, c2);
__sync_lock_test_and_set(&c1, c3);
__sync_lock_release(&c1);
__sync_synchronize();
atomic_type c3(0);
__atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
__atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
__ATOMIC_RELAXED);
__atomic_test_and_set(&c1, __ATOMIC_RELAXED);
__atomic_load_n(&c1, __ATOMIC_RELAXED);
;
return 0;
}
@ -15207,12 +15209,13 @@ main ()
typedef int atomic_type;
atomic_type c1;
atomic_type c2;
const atomic_type c3(0);
__sync_fetch_and_add(&c1, c2);
__sync_val_compare_and_swap(&c1, c3, c2);
__sync_lock_test_and_set(&c1, c3);
__sync_lock_release(&c1);
__sync_synchronize();
atomic_type c3(0);
__atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
__atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
__ATOMIC_RELAXED);
__atomic_test_and_set(&c1, __ATOMIC_RELAXED);
__atomic_load_n(&c1, __ATOMIC_RELAXED);
;
return 0;
}
@ -15248,12 +15251,13 @@ main ()
typedef long long atomic_type;
atomic_type c1;
atomic_type c2;
const atomic_type c3(0);
__sync_fetch_and_add(&c1, c2);
__sync_val_compare_and_swap(&c1, c3, c2);
__sync_lock_test_and_set(&c1, c3);
__sync_lock_release(&c1);
__sync_synchronize();
atomic_type c3(0);
__atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
__atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
__ATOMIC_RELAXED);
__atomic_test_and_set(&c1, __ATOMIC_RELAXED);
__atomic_load_n(&c1, __ATOMIC_RELAXED);
;
return 0;
}
@ -15281,18 +15285,19 @@ $as_echo "$glibcxx_cv_atomic_long_long" >&6; }
# Fake what AC_TRY_COMPILE does.
cat > conftest.$ac_ext << EOF
#line 15284 "configure"
#line 15288 "configure"
int main()
{
typedef bool atomic_type;
atomic_type c1;
atomic_type c2;
const atomic_type c3(0);
__sync_fetch_and_add(&c1, c2);
__sync_val_compare_and_swap(&c1, c3, c2);
__sync_lock_test_and_set(&c1, c3);
__sync_lock_release(&c1);
__sync_synchronize();
atomic_type c3(0);
__atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
__atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
__ATOMIC_RELAXED);
__atomic_test_and_set(&c1, __ATOMIC_RELAXED);
__atomic_load_n(&c1, __ATOMIC_RELAXED);
return 0;
}
EOF
@ -15315,18 +15320,19 @@ $as_echo "$glibcxx_cv_atomic_bool" >&6; }
rm -f conftest*
cat > conftest.$ac_ext << EOF
#line 15318 "configure"
#line 15323 "configure"
int main()
{
typedef short atomic_type;
atomic_type c1;
atomic_type c2;
const atomic_type c3(0);
__sync_fetch_and_add(&c1, c2);
__sync_val_compare_and_swap(&c1, c3, c2);
__sync_lock_test_and_set(&c1, c3);
__sync_lock_release(&c1);
__sync_synchronize();
atomic_type c3(0);
__atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
__atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
__ATOMIC_RELAXED);
__atomic_test_and_set(&c1, __ATOMIC_RELAXED);
__atomic_load_n(&c1, __ATOMIC_RELAXED);
return 0;
}
EOF
@ -15349,19 +15355,20 @@ $as_echo "$glibcxx_cv_atomic_short" >&6; }
rm -f conftest*
cat > conftest.$ac_ext << EOF
#line 15352 "configure"
#line 15358 "configure"
int main()
{
// NB: _Atomic_word not necessarily int.
typedef int atomic_type;
atomic_type c1;
atomic_type c2;
const atomic_type c3(0);
__sync_fetch_and_add(&c1, c2);
__sync_val_compare_and_swap(&c1, c3, c2);
__sync_lock_test_and_set(&c1, c3);
__sync_lock_release(&c1);
__sync_synchronize();
atomic_type c3(0);
__atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
__atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
__ATOMIC_RELAXED);
__atomic_test_and_set(&c1, __ATOMIC_RELAXED);
__atomic_load_n(&c1, __ATOMIC_RELAXED);
return 0;
}
EOF
@ -15384,18 +15391,19 @@ $as_echo "$glibcxx_cv_atomic_int" >&6; }
rm -f conftest*
cat > conftest.$ac_ext << EOF
#line 15387 "configure"
#line 15394 "configure"
int main()
{
typedef long long atomic_type;
atomic_type c1;
atomic_type c2;
const atomic_type c3(0);
__sync_fetch_and_add(&c1, c2);
__sync_val_compare_and_swap(&c1, c3, c2);
__sync_lock_test_and_set(&c1, c3);
__sync_lock_release(&c1);
__sync_synchronize();
atomic_type c3(0);
__atomic_fetch_add(&c1, c2, __ATOMIC_RELAXED);
__atomic_compare_exchange_n(&c1, &c2, c3, true, __ATOMIC_ACQ_REL,
__ATOMIC_RELAXED);
__atomic_test_and_set(&c1, __ATOMIC_RELAXED);
__atomic_load_n(&c1, __ATOMIC_RELAXED);
return 0;
}
EOF
@ -15427,8 +15435,11 @@ ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $
ac_compiler_gnu=$ac_cv_c_compiler_gnu
# Set atomicity_dir to builtins if either of above tests pass.
if test $glibcxx_cv_atomic_int = yes || test $glibcxx_cv_atomic_bool = yes ; then
# Set atomicity_dir to builtins if all of above tests pass.
if test $glibcxx_cv_atomic_bool = yes \
&& test $glibcxx_cv_atomic_short = yes \
&& test $glibcxx_cv_atomic_int = yes \
&& test $glibcxx_cv_atomic_long_long = yes ; then
$as_echo "#define _GLIBCXX_ATOMIC_BUILTINS 1" >>confdefs.h
@ -15460,7 +15471,7 @@ $as_echo "$as_me: WARNING: Performance of certain classes will degrade as a resu
# unnecessary for this test.
cat > conftest.$ac_ext << EOF
#line 15463 "configure"
#line 15474 "configure"
int main()
{
_Decimal32 d1;
@ -15502,7 +15513,7 @@ ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
# unnecessary for this test.
cat > conftest.$ac_ext << EOF
#line 15505 "configure"
#line 15516 "configure"
template<typename T1, typename T2>
struct same
{ typedef T2 type; };
@ -15536,7 +15547,7 @@ $as_echo "$enable_int128" >&6; }
rm -f conftest*
cat > conftest.$ac_ext << EOF
#line 15539 "configure"
#line 15550 "configure"
template<typename T1, typename T2>
struct same
{ typedef T2 type; };

10
libstdc++-v3/include/bits/shared_ptr_base.h
View file

@ -1,6 +1,7 @@
// shared_ptr and weak_ptr implementation details -*- C++ -*-
// Copyright (C) 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
// Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012
// Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
@ -193,7 +194,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
{
// No memory barrier is used here so there is no synchronization
// with other threads.
return const_cast<const volatile _Atomic_word&>(_M_use_count);
return __atomic_load_n(&_M_use_count, __ATOMIC_RELAXED);
}
private:
@ -245,8 +246,9 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
// Replace the current counter value with the old value + 1, as
// long as it's not changed meanwhile.
}
while (!__sync_bool_compare_and_swap(&_M_use_count, __count,
__count + 1));
while (!__atomic_compare_exchange_n(&_M_use_count, &__count, __count + 1,
true, __ATOMIC_ACQ_REL,
__ATOMIC_RELAXED));
}

17
libstdc++-v3/include/parallel/compatibility.h
View file

@ -1,6 +1,6 @@
// -*- C++ -*-
// Copyright (C) 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
// Copyright (C) 2007, 2008, 2009, 2010, 2012 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the terms
@ -102,7 +102,7 @@ namespace __gnu_parallel
return _InterlockedExchangeAdd(reinterpret_cast<volatile long*>(__ptr),
__addend);
#elif defined(__GNUC__)
return __sync_fetch_and_add(__ptr, __addend);
return __atomic_fetch_add(__ptr, __addend, __ATOMIC_ACQ_REL);
#elif defined(__SUNPRO_CC) && defined(__sparc)
volatile int32_t __before, __after;
do
@ -145,11 +145,11 @@ namespace __gnu_parallel
return _InterlockedExchangeAdd64(__ptr, __addend);
#endif
#elif defined(__GNUC__) && defined(__x86_64)
return __sync_fetch_and_add(__ptr, __addend);
return __atomic_fetch_add(__ptr, __addend, __ATOMIC_ACQ_REL);
#elif defined(__GNUC__) && defined(__i386) && \
(defined(__i686) || defined(__pentium4) || defined(__athlon) \
|| defined(__k8) || defined(__core2))
return __sync_fetch_and_add(__ptr, __addend);
return __atomic_fetch_add(__ptr, __addend, __ATOMIC_ACQ_REL);
#elif defined(__SUNPRO_CC) && defined(__sparc)
volatile int64_t __before, __after;
do
@ -252,7 +252,8 @@ namespace __gnu_parallel
__replacement, __comparand)
== __comparand;
#elif defined(__GNUC__)
return __sync_bool_compare_and_swap(__ptr, __comparand, __replacement);
return __atomic_compare_exchange_n(__ptr, &__comparand, __replacement, true,
__ATOMIC_ACQ_REL, __ATOMIC_RELAXED);
#elif defined(__SUNPRO_CC) && defined(__sparc)
return atomic_cas_32((volatile unsigned int*)__ptr, __comparand,
__replacement) == __comparand;
@ -298,11 +299,13 @@ namespace __gnu_parallel
#endif
#elif defined(__GNUC__) && defined(__x86_64)
return __sync_bool_compare_and_swap(__ptr, __comparand, __replacement);
return __atomic_compare_exchange_n(__ptr, &__comparand, __replacement, true,
__ATOMIC_ACQ_REL, __ATOMIC_RELAXED);
#elif defined(__GNUC__) && defined(__i386) && \
(defined(__i686) || defined(__pentium4) || defined(__athlon) \
|| defined(__k8) || defined(__core2))
return __sync_bool_compare_and_swap(__ptr, __comparand, __replacement);
return __atomic_compare_exchange_n(__ptr, &__comparand, __replacement, true,
__ATOMIC_ACQ_REL, __ATOMIC_RELAXED);
#elif defined(__SUNPRO_CC) && defined(__sparc)
return atomic_cas_64((volatile unsigned long long*)__ptr,
__comparand, __replacement) == __comparand;

11
libstdc++-v3/include/profile/impl/profiler_state.h
View file

@ -1,6 +1,6 @@
// -*- C++ -*-
//
// Copyright (C) 2009, 2010 Free Software Foundation, Inc.
// Copyright (C) 2009, 2010, 2012 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the terms
@ -45,9 +45,12 @@ namespace __gnu_profile
inline bool
__turn(__state_type __s)
{ return (_GLIBCXX_PROFILE_DATA(__state)
== __sync_val_compare_and_swap(&_GLIBCXX_PROFILE_DATA(__state),
__INVALID, __s)); }
{
__state_type inv(__INVALID);
return __atomic_compare_exchange_n(&_GLIBCXX_PROFILE_DATA(__state),
&inv, __s, true, __ATOMIC_ACQ_REL,
__ATOMIC_RELAXED);
}
inline bool
__turn_on()

10
libstdc++-v3/include/tr1/shared_ptr.h
View file

@ -1,6 +1,7 @@
// <tr1/shared_ptr.h> -*- C++ -*-
// Copyright (C) 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
// Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012
// Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
@ -246,9 +247,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
// Replace the current counter value with the old value + 1, as
// long as it's not changed meanwhile.
}
while (!__sync_bool_compare_and_swap(&_M_use_count, __count,
__count + 1));
}
while (!__atomic_compare_exchange_n(&_M_use_count, &__count, __count + 1,
true, __ATOMIC_ACQ_REL,
__ATOMIC_RELAXED));
}
template<typename _Ptr, typename _Deleter, _Lock_policy _Lp>
class _Sp_counted_base_impl

10
libstdc++-v3/libsupc++/eh_ptr.cc
View file

@ -1,5 +1,5 @@
// -*- C++ -*- Implement the members of exception_ptr.
// Copyright (C) 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
// Copyright (C) 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
//
// This file is part of GCC.
//
@ -75,7 +75,7 @@ std::__exception_ptr::exception_ptr::_M_addref() _GLIBCXX_USE_NOEXCEPT
{
__cxa_refcounted_exception *eh =
__get_refcounted_exception_header_from_obj (_M_exception_object);
__sync_add_and_fetch (&eh->referenceCount, 1);
__atomic_add_fetch (&eh->referenceCount, 1, __ATOMIC_ACQ_REL);
}
}
@ -87,7 +87,7 @@ std::__exception_ptr::exception_ptr::_M_release() _GLIBCXX_USE_NOEXCEPT
{
__cxa_refcounted_exception *eh =
__get_refcounted_exception_header_from_obj (_M_exception_object);
if (__sync_sub_and_fetch (&eh->referenceCount, 1) == 0)
if (__atomic_sub_fetch (&eh->referenceCount, 1, __ATOMIC_ACQ_REL) == 0)
{
if (eh->exc.exceptionDestructor)
eh->exc.exceptionDestructor (_M_exception_object);
@ -191,7 +191,7 @@ __gxx_dependent_exception_cleanup(_Unwind_Reason_Code code,
__cxa_free_dependent_exception (dep);
if (__sync_sub_and_fetch (&header->referenceCount, 1) == 0)
if (__atomic_sub_fetch (&header->referenceCount, 1, __ATOMIC_ACQ_REL) == 0)
{
if (header->exc.exceptionDestructor)
header->exc.exceptionDestructor (header + 1);
@ -210,7 +210,7 @@ std::rethrow_exception(std::exception_ptr ep)
__cxa_dependent_exception *dep = __cxa_allocate_dependent_exception ();
dep->primaryException = obj;
__sync_add_and_fetch (&eh->referenceCount, 1);
__atomic_add_fetch (&eh->referenceCount, 1, __ATOMIC_ACQ_REL);
dep->unexpectedHandler = __unexpected_handler;
dep->terminateHandler = __terminate_handler;

4
libstdc++-v3/libsupc++/eh_throw.cc
View file

@ -1,6 +1,6 @@
// -*- C++ -*- Exception handling routines for throwing.
// Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
// 2011 Free Software Foundation, Inc.
// 2011, 2012 Free Software Foundation, Inc.
//
// This file is part of GCC.
//
@ -44,7 +44,7 @@ __gxx_exception_cleanup (_Unwind_Reason_Code code, _Unwind_Exception *exc)
__terminate (header->exc.terminateHandler);
#if ATOMIC_INT_LOCK_FREE > 1
if (__sync_sub_and_fetch (&header->referenceCount, 1) == 0)
if (__atomic_sub_fetch (&header->referenceCount, 1, __ATOMIC_ACQ_REL) == 0)
{
#endif
if (header->exc.exceptionDestructor)

4
libstdc++-v3/libsupc++/eh_tm.cc
View file

@ -1,5 +1,5 @@
// -*- C++ -*- Exception handling routines for Transactional Memory.
// Copyright (C) 2009, 2011 Free Software Foundation, Inc.
// Copyright (C) 2009, 2011, 2012 Free Software Foundation, Inc.
//
// This file is part of GCC.
//
@ -46,7 +46,7 @@ free_any_cxa_exception (_Unwind_Exception *eo)
}
#if __GCC_ATOMIC_INT_LOCK_FREE > 1
if (__sync_sub_and_fetch (&h->referenceCount, 1) == 0)
if (__atomic_sub_fetch (&h->referenceCount, 1, __ATOMIC_ACQ_REL) == 0)
#endif
__cxa_free_exception (h + 1);
}

48
libstdc++-v3/libsupc++/guard.cc
View file

@ -1,4 +1,4 @@
// Copyright (C) 2002, 2004, 2006, 2008, 2009, 2010, 2011
// Copyright (C) 2002, 2004, 2006, 2008, 2009, 2010, 2011, 2012
// Free Software Foundation, Inc.
//
// This file is part of GCC.
@ -239,34 +239,42 @@ namespace __cxxabiv1
return 0;
# ifdef _GLIBCXX_USE_FUTEX
// If __sync_* and futex syscall are supported, don't use any global
// If __atomic_* and futex syscall are supported, don't use any global
// mutex.
if (__gthread_active_p ())
{
int *gi = (int *) (void *) g;
int expected(0);
const int guard_bit = _GLIBCXX_GUARD_BIT;
const int pending_bit = _GLIBCXX_GUARD_PENDING_BIT;
const int waiting_bit = _GLIBCXX_GUARD_WAITING_BIT;
while (1)
{
int old = __sync_val_compare_and_swap (gi, 0, pending_bit);
if (old == 0)
return 1; // This thread should do the initialization.
if (old == guard_bit)
return 0; // Already initialized.
if (old == pending_bit)
if (__atomic_compare_exchange_n(gi, &expected, pending_bit, true,
__ATOMIC_ACQ_REL, __ATOMIC_RELAXED))
{
int newv = old | waiting_bit;
if (__sync_val_compare_and_swap (gi, old, newv) != old)
continue;
old = newv;
// This thread should do the initialization.
return 1;
}
if (expected == guard_bit)
{
// Already initialized.
return 0;
}
if (expected == pending_bit)
{
int newv = expected | waiting_bit;
if (!__atomic_compare_exchange_n(gi, &expected, newv, true,
__ATOMIC_ACQ_REL,
__ATOMIC_RELAXED))
continue;
expected = newv;
}
syscall (SYS_futex, gi, _GLIBCXX_FUTEX_WAIT, old, 0);
syscall (SYS_futex, gi, _GLIBCXX_FUTEX_WAIT, expected, 0);
}
}
# else
@ -316,13 +324,13 @@ namespace __cxxabiv1
void __cxa_guard_abort (__guard *g) throw ()
{
#ifdef _GLIBCXX_USE_FUTEX
// If __sync_* and futex syscall are supported, don't use any global
// If __atomic_* and futex syscall are supported, don't use any global
// mutex.
if (__gthread_active_p ())
{
int *gi = (int *) (void *) g;
const int waiting_bit = _GLIBCXX_GUARD_WAITING_BIT;
int old = __sync_lock_test_and_set (gi, 0);
int old = __atomic_exchange_n (gi, 0, __ATOMIC_ACQ_REL);
if ((old & waiting_bit) != 0)
syscall (SYS_futex, gi, _GLIBCXX_FUTEX_WAKE, INT_MAX);
@ -355,14 +363,14 @@ namespace __cxxabiv1
void __cxa_guard_release (__guard *g) throw ()
{
#ifdef _GLIBCXX_USE_FUTEX
// If __sync_* and futex syscall are supported, don't use any global
// If __atomic_* and futex syscall are supported, don't use any global
// mutex.
if (__gthread_active_p ())
{
int *gi = (int *) (void *) g;
const int guard_bit = _GLIBCXX_GUARD_BIT;
const int waiting_bit = _GLIBCXX_GUARD_WAITING_BIT;
int old = __sync_lock_test_and_set (gi, guard_bit);
int old = __atomic_exchange_n (gi, guard_bit, __ATOMIC_ACQ_REL);
if ((old & waiting_bit) != 0)
syscall (SYS_futex, gi, _GLIBCXX_FUTEX_WAKE, INT_MAX);

6
libstdc++-v3/testsuite/20_util/shared_ptr/cons/43820_neg.cc
View file

@ -1,7 +1,7 @@
// { dg-options "-std=gnu++0x" }
// { dg-do compile }
// Copyright (C) 2010, 2011 Free Software Foundation
// Copyright (C) 2010, 2011, 2012 Free Software Foundation
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
@ -32,9 +32,9 @@ void test01()
{
X* px = 0;
std::shared_ptr<X> p1(px); // { dg-error "here" }
// { dg-error "incomplete" "" { target *-*-* } 771 }
// { dg-error "incomplete" "" { target *-*-* } 773 }
std::shared_ptr<X> p9(ap()); // { dg-error "here" }
// { dg-error "incomplete" "" { target *-*-* } 865 }
// { dg-error "incomplete" "" { target *-*-* } 867 }
}

4
libstdc++-v3/testsuite/tr1/2_general_utilities/shared_ptr/cons/43820_neg.cc
View file

@ -30,9 +30,9 @@ void test01()
{
X* px = 0;
std::tr1::shared_ptr<X> p1(px); // { dg-error "here" }
// { dg-error "incomplete" "" { target *-*-* } 563 }
// { dg-error "incomplete" "" { target *-*-* } 565 }
std::tr1::shared_ptr<X> p9(ap()); // { dg-error "here" }
// { dg-error "incomplete" "" { target *-*-* } 602 }
// { dg-error "incomplete" "" { target *-*-* } 604 }
}