128 lines
4.0 KiB
C
128 lines
4.0 KiB
C
// Utility subroutines for the C++ library testsuite.
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//
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// Copyright (C) 2000, 2001 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 2, or (at your option)
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// any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING. If not, write to the Free
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// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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//
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// As a special exception, you may use this file as part of a free software
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// library without restriction. Specifically, if other files instantiate
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// templates or use macros or inline functions from this file, or you compile
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// this file and link it with other files to produce an executable, this
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// file does not by itself cause the resulting executable to be covered by
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// the GNU General Public License. This exception does not however
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// invalidate any other reasons why the executable file might be covered by
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// the GNU General Public License.
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// This file provides the following:
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//
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// 1) VERIFY(), via DEBUG_ASSERT, from Brent Verner <brent@rcfile.org>.
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// This file is included in the various testsuite programs to provide
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// #define(able) assert() behavior for debugging/testing. It may be
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// a suitable location for other furry woodland creatures as well.
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//
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// 2) __set_testsuite_memlimit()
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// __set_testsuite_memlimit() uses setrlimit() to restrict dynamic memory
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// allocation. We provide a default memory limit if none is passed by the
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// calling application. The argument to __set_testsuite_memlimit() is the
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// limit in megabytes (a floating-point number). If _GLIBCPP_MEM_LIMITS is
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// #defined before including this header, then no limiting is attempted.
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//
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// 3) gnu_counting_struct
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// This is a POD with a static data member, gnu_counting_struct::count,
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// which starts at zero, increments on instance construction, and decrements
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// on instance destruction. "assert_count(n)" can be called to VERIFY()
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// that the count equals N.
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#ifndef _GLIBCPP_TESTSUITE_HOOKS_H
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#define _GLIBCPP_TESTSUITE_HOOKS_H
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#ifdef DEBUG_ASSERT
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# include <cassert>
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# define VERIFY(fn) assert(fn)
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#else
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# define VERIFY(fn) test &= (fn)
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#endif
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#include <bits/c++config.h>
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// Defined in GLIBCPP_CONFIGURE_TESTSUITE.
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#ifndef _GLIBCPP_MEM_LIMITS
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// Don't do memory limits.
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void
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__set_testsuite_memlimit(float x = 0)
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{ }
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#else
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// Do memory limits.
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#include <sys/resource.h>
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#include <unistd.h>
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#ifndef MEMLIMIT_MB
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#define MEMLIMIT_MB 16.0
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#endif
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void
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__set_testsuite_memlimit(float __size = MEMLIMIT_MB)
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{
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struct rlimit r;
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r.rlim_cur = (rlim_t)(__size * 1048576);
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// Heap size, seems to be common.
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#if _GLIBCPP_HAVE_MEMLIMIT_DATA
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setrlimit(RLIMIT_DATA, &r);
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#endif
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// Resident set size.
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#if _GLIBCPP_HAVE_MEMLIMIT_RSS
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setrlimit(RLIMIT_RSS, &r);
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#endif
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// Mapped memory (brk + mmap).
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#if _GLIBCPP_HAVE_MEMLIMIT_VMEM
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setrlimit(RLIMIT_VMEM, &r);
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#endif
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// Virtual memory.
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#if _GLIBCPP_HAVE_MEMLIMIT_AS
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setrlimit(RLIMIT_AS, &r);
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#endif
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}
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#endif
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struct gnu_counting_struct
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{
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// Specifically and glaringly-obviously marked 'signed' so that when
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// count mistakenly goes negative, we can track the patterns of
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// deletions easier.
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typedef signed int size_type;
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static size_type count;
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gnu_counting_struct() { ++count; }
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gnu_counting_struct (const gnu_counting_struct&) { ++count; }
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~gnu_counting_struct() { --count; }
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};
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#define assert_count(n) VERIFY(gnu_counting_struct::count == n)
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gnu_counting_struct::size_type gnu_counting_struct::count = 0;
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#endif // _GLIBCPP_TESTSUITE_HOOKS_H
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