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// Utility subroutines for the C++ library testsuite.
//
// Copyright (C) 2000, 2001, 2002 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.
//
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
// This file provides the following:
//
// 1) VERIFY(), via DEBUG_ASSERT, from Brent Verner <brent@rcfile.org>.
// This file is included in the various testsuite programs to provide
// #define(able) assert() behavior for debugging/testing. It may be
// a suitable location for other furry woodland creatures as well.
//
// 2) __set_testsuite_memlimit()
// __set_testsuite_memlimit() uses setrlimit() to restrict dynamic memory
// allocation. We provide a default memory limit if none is passed by the
// calling application. The argument to __set_testsuite_memlimit() is the
// limit in megabytes (a floating-point number). If _GLIBCPP_MEM_LIMITS is
// not #defined before including this header, then no limiting is attempted.
//
// 3) gnu_counting_struct
// This is a POD with a static data member, gnu_counting_struct::count,
// which starts at zero, increments on instance construction, and decrements
// on instance destruction. "assert_count(n)" can be called to VERIFY()
// that the count equals N.
#ifndef _GLIBCPP_TESTSUITE_HOOKS_H
#define _GLIBCPP_TESTSUITE_HOOKS_H
#ifdef DEBUG_ASSERT
# include <cassert>
# define VERIFY(fn) assert(fn)
#else
# define VERIFY(fn) test &= (fn)
#endif
#include <bits/c++config.h>
// Defined in GLIBCPP_CONFIGURE_TESTSUITE.
#ifndef _GLIBCPP_MEM_LIMITS
// Don't do memory limits.
void
__set_testsuite_memlimit(float x = 0)
{ }
#else
// Do memory limits.
#include <sys/resource.h>
#include <unistd.h>
#ifndef MEMLIMIT_MB
#define MEMLIMIT_MB 16.0
#endif
void
__set_testsuite_memlimit(float __size = MEMLIMIT_MB)
{
struct rlimit r;
rlim_t limit = (rlim_t)(__size * 1048576);
// Heap size, seems to be common.
#if _GLIBCPP_HAVE_MEMLIMIT_DATA
getrlimit(RLIMIT_DATA, &r);
r.rlim_cur = limit;
setrlimit(RLIMIT_DATA, &r);
#endif
// Resident set size.
#if _GLIBCPP_HAVE_MEMLIMIT_RSS
getrlimit(RLIMIT_RSS, &r);
r.rlim_cur = limit;
setrlimit(RLIMIT_RSS, &r);
#endif
// Mapped memory (brk + mmap).
#if _GLIBCPP_HAVE_MEMLIMIT_VMEM
getrlimit(RLIMIT_VMEM, &r);
r.rlim_cur = limit;
setrlimit(RLIMIT_VMEM, &r);
#endif
// Virtual memory.
#if _GLIBCPP_HAVE_MEMLIMIT_AS
getrlimit(RLIMIT_AS, &r);
r.rlim_cur = limit;
setrlimit(RLIMIT_AS, &r);
#endif
}
#endif
struct gnu_counting_struct
{
// Specifically and glaringly-obviously marked 'signed' so that when
// count mistakenly goes negative, we can track the patterns of
// deletions easier.
typedef signed int size_type;
static size_type count;
gnu_counting_struct() { ++count; }
gnu_counting_struct (const gnu_counting_struct&) { ++count; }
~gnu_counting_struct() { --count; }
};
#define assert_count(n) VERIFY(gnu_counting_struct::count == n)
gnu_counting_struct::size_type gnu_counting_struct::count = 0;
#endif // _GLIBCPP_TESTSUITE_HOOKS_H
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