mt_allocator.h (struct __per_type_pool_policy<,, [...]): Scale _M_chunk_size too with sizeof(_Tp)...

2005-01-26  Paolo Carlini  <pcarlini@suse.de>

	* include/ext/mt_allocator.h
	(struct __per_type_pool_policy<,, false>::_S_get_pool,
	struct __per_type_pool_policy<,, true>::_S_get_pool): Scale
	_M_chunk_size too with sizeof(_Tp), otherwise the allocator
	breaks down as soon as sizeof(_Tp) >~ _S_chunk_size / 128;
	reduce to 64 the multiplier for _M_max_bytes (safer wrt
	_Binmap_type being a short); trivial reformattings.
	* testsuite/ext/mt_allocator/check_allocate_big_per_type.cc: New.

From-SVN: r94268

1 files changed, 55 insertions, 0 deletions

diff --git a/libstdc++-v3/testsuite/ext/mt_allocator/check_allocate_big_per_type.cc b/libstdc++-v3/testsuite/ext/mt_allocator/check_allocate_big_per_type.cc
new file mode 100644
index 0000000..2d3b5b1
--- /dev/null
+++ b/libstdc++-v3/testsuite/ext/mt_allocator/check_allocate_big_per_type.cc
@@ -0,0 +1,55 @@
+// 2005-01-26  Paolo Carlini  <pcarlini@suse.de>
+//
+// Copyright (C) 2005 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 of the GNU General Public License as published by the
+// Free Software Foundation; either version 2, or (at your option)
+// any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING.  If not, write to the Free
+// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// USA.
+
+#include <memory>
+#include <ext/mt_allocator.h>
+#include <cstring>
+#include <testsuite_hooks.h>
+
+struct big { char array[256]; };
+
+// __per_type_pool_policy
+void test01()
+{
+  bool test __attribute__((unused)) = true;
+
+  typedef big value_type;
+
+  using __gnu_cxx::__pool;
+  using __gnu_cxx::__per_type_pool_policy;
+
+#ifdef __GTHREADS
+  typedef __per_type_pool_policy<value_type, __pool, true> policy_type;
+#else
+  typedef __per_type_pool_policy<value_type, __pool, false> policy_type;
+#endif
+  typedef __gnu_cxx::__mt_alloc<value_type, policy_type> allocator_type;
+
+  allocator_type a;
+  allocator_type::pointer p1 = a.allocate(64);
+  std::memset((void*)p1, 0, sizeof(big) * 64);
+  a.deallocate(p1, 64);
+}
+
+int main()
+{
+  test01();
+  return 0;
+}