// 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; r.rlim_cur = (rlim_t)(__size * 1048576); // Heap size, seems to be common. #if _GLIBCPP_HAVE_MEMLIMIT_DATA setrlimit(RLIMIT_DATA, &r); #endif // Resident set size. #if _GLIBCPP_HAVE_MEMLIMIT_RSS setrlimit(RLIMIT_RSS, &r); #endif // Mapped memory (brk + mmap). #if _GLIBCPP_HAVE_MEMLIMIT_VMEM setrlimit(RLIMIT_VMEM, &r); #endif // Virtual memory. #if _GLIBCPP_HAVE_MEMLIMIT_AS 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