cbe34bb5ed
From-SVN: r243994
326 lines
7.9 KiB
C++
326 lines
7.9 KiB
C++
// -*- C++ -*-
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// Utility subroutines for the C++ library testsuite.
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//
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// Copyright (C) 2002-2017 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 3, 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 COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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//
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#include <testsuite_hooks.h>
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#ifdef _GLIBCXX_RES_LIMITS
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#include <unistd.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#endif
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#include <list>
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#include <string>
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#include <stdexcept>
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#include <clocale>
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#include <cstdlib>
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#include <locale>
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#include <cxxabi.h>
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// If we have <sys/types.h>, <sys/ipc.h>, and <sys/sem.h>, then assume
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// that System V semaphores are available.
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#if defined(_GLIBCXX_HAVE_SYS_TYPES_H) \
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&& defined(_GLIBCXX_HAVE_SYS_IPC_H) \
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&& defined(_GLIBCXX_HAVE_SYS_SEM_H)
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#define _GLIBCXX_SYSV_SEM
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#endif
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#ifdef _GLIBCXX_SYSV_SEM
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#include <sys/types.h>
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#include <sys/ipc.h>
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#include <sys/sem.h>
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#endif
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namespace __gnu_test
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{
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#ifdef _GLIBCXX_RES_LIMITS
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void
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set_memory_limits(float size)
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{
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struct rlimit r;
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// Cater to the absence of rlim_t.
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__typeof__ (r.rlim_cur) limit = (__typeof__ (r.rlim_cur))(size * 1048576);
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// Heap size, seems to be common.
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#if _GLIBCXX_HAVE_LIMIT_DATA
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getrlimit(RLIMIT_DATA, &r);
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r.rlim_cur = limit;
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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 _GLIBCXX_HAVE_LIMIT_RSS
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getrlimit(RLIMIT_RSS, &r);
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r.rlim_cur = limit;
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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 _GLIBCXX_HAVE_LIMIT_VMEM
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getrlimit(RLIMIT_VMEM, &r);
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r.rlim_cur = limit;
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setrlimit(RLIMIT_VMEM, &r);
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#endif
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// Virtual memory. On x86_64-linux, the default is -z
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// max-page-size=0x200000 which means up to 2MB of address space
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// are accounted for PROT_NONE mappings between text and data
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// segments of each shared library. There are 4 shared libs
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// involved in addition to the dynamic linker, maybe 5 if libgomp
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// is being used as well. Use at least 20MB address space limit.
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#if defined(__x86_64__) && defined(__linux__)
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if (limit < 20971520)
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limit = 20971520;
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#endif
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// On HP-UX 11.23, a trivial C++ program that sets RLIMIT_AS to
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// anything less than 128MB cannot "malloc" even 1K of memory.
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// Therefore, we skip RLIMIT_AS on HP-UX.
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#if _GLIBCXX_HAVE_LIMIT_AS && !defined(__hpux__)
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getrlimit(RLIMIT_AS, &r);
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r.rlim_cur = limit;
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setrlimit(RLIMIT_AS, &r);
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#endif
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}
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#else
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void
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set_memory_limits(float) { }
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#endif
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#ifdef _GLIBCXX_RES_LIMITS
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void
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set_file_limit(unsigned long size)
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{
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#if _GLIBCXX_HAVE_LIMIT_FSIZE
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struct rlimit r;
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// Cater to the absence of rlim_t.
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__typeof__ (r.rlim_cur) limit = (__typeof__ (r.rlim_cur))(size);
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getrlimit(RLIMIT_FSIZE, &r);
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r.rlim_cur = limit;
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setrlimit(RLIMIT_FSIZE, &r);
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#endif
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}
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#else
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void
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set_file_limit(unsigned long) { }
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#endif
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void
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verify_demangle(const char* mangled, const char* wanted)
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{
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int status = 0;
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const char* s = abi::__cxa_demangle(mangled, 0, 0, &status);
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if (!s)
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{
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switch (status)
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{
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case 0:
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s = "error code = 0: success";
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break;
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case -1:
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s = "error code = -1: memory allocation failure";
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break;
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case -2:
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s = "error code = -2: invalid mangled name";
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break;
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case -3:
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s = "error code = -3: invalid arguments";
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break;
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default:
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s = "error code unknown - who knows what happened";
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}
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}
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std::string w(wanted);
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if (w != s)
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std::__throw_runtime_error(s);
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}
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void
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run_tests_wrapped_locale(const char* name, const func_callback& l)
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{
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using namespace std;
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// Set the global locale.
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locale loc_name = locale(name);
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locale orig = locale::global(loc_name);
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const char* res = setlocale(LC_ALL, name);
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if (res)
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{
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string preLC_ALL = res;
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const func_callback::test_type* tests = l.tests();
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for (int i = 0; i < l.size(); ++i)
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(*tests[i])();
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string postLC_ALL= setlocale(LC_ALL, 0);
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VERIFY( preLC_ALL == postLC_ALL );
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}
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else
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{
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string s("LC_ALL for ");
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s += name;
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__throw_runtime_error(s.c_str());
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}
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}
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void
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run_tests_wrapped_env(const char* name, const char* env,
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const func_callback& l)
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{
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using namespace std;
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#ifdef _GLIBCXX_HAVE_SETENV
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// Set the global locale.
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locale loc_name = locale(name);
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locale orig = locale::global(loc_name);
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// Set environment variable env to value in name.
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const char* oldENV = getenv(env);
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if (!setenv(env, name, 1))
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{
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const func_callback::test_type* tests = l.tests();
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for (int i = 0; i < l.size(); ++i)
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(*tests[i])();
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setenv(env, oldENV ? oldENV : "", 1);
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}
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else
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{
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string s(env);
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s += string(" to ");
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s += string(name);
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__throw_runtime_error(s.c_str());
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}
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#endif
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}
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object_counter::size_type object_counter::count = 0;
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unsigned int copy_constructor::count_ = 0;
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unsigned int copy_constructor::throw_on_ = 0;
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unsigned int assignment_operator::count_ = 0;
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unsigned int assignment_operator::throw_on_ = 0;
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unsigned int destructor::_M_count = 0;
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int copy_tracker::next_id_ = 0;
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#ifdef _GLIBCXX_SYSV_SEM
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// This union is not declared in system headers. Instead, it must
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// be defined by user programs.
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union semun
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{
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int val;
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struct semid_ds *buf;
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unsigned short *array;
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};
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#endif
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semaphore::semaphore()
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{
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#ifdef _GLIBCXX_SYSV_SEM
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// Remember the PID for the process that created the semaphore set
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// so that only one process will destroy the set.
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pid_ = getpid();
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// GLIBC does not define SEM_R and SEM_A.
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#ifndef SEM_R
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#define SEM_R 0400
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#endif
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#ifndef SEM_A
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#define SEM_A 0200
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#endif
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// Get a semaphore set with one semaphore.
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sem_set_ = semget(IPC_PRIVATE, 1, SEM_R | SEM_A);
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if (sem_set_ == -1)
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std::__throw_runtime_error("could not obtain semaphore set");
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// Initialize the semaphore.
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union semun val;
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val.val = 0;
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if (semctl(sem_set_, 0, SETVAL, val) == -1)
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std::__throw_runtime_error("could not initialize semaphore");
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#else
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// There are no semaphores on this system. We have no way to mark
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// a test as "unsupported" at runtime, so we just exit, pretending
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// that the test passed.
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exit(0);
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#endif
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}
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semaphore::~semaphore()
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{
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#ifdef _GLIBCXX_SYSV_SEM
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union semun val;
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val.val = 0; // Avoid uninitialized variable warning.
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// Destroy the semaphore set only in the process that created it.
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if (pid_ == getpid())
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semctl(sem_set_, 0, IPC_RMID, val);
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#endif
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}
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void
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semaphore::signal()
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{
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#ifdef _GLIBCXX_SYSV_SEM
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struct sembuf op[1] =
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{
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{ 0, 1, 0 }
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};
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if (semop(sem_set_, op, 1) == -1)
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std::__throw_runtime_error("could not signal semaphore");
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#endif
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}
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void
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semaphore::wait()
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{
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#ifdef _GLIBCXX_SYSV_SEM
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struct sembuf op[1] =
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{
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{ 0, -1, SEM_UNDO }
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};
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if (semop(sem_set_, op, 1) == -1)
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std::__throw_runtime_error("could not wait for semaphore");
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#endif
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}
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// For use in 22_locale/time_get and time_put.
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std::tm
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test_tm(int sec, int min, int hour, int mday, int mon,
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int year, int wday, int yday, int isdst)
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{
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static std::tm tmp;
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tmp.tm_sec = sec;
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tmp.tm_min = min;
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tmp.tm_hour = hour;
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tmp.tm_mday = mday;
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tmp.tm_mon = mon;
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tmp.tm_year = year;
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tmp.tm_wday = wday;
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tmp.tm_yday = yday;
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tmp.tm_isdst = isdst;
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return tmp;
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}
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} // namespace __gnu_test
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