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gcc/libstdc++-v3/testsuite/util/testsuite_hooks.cc

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// -*- C++ -*-
// Utility subroutines for the C++ library testsuite.
//
// Copyright (C) 2002-2015 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 3, 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 COPYING3. If not see
// <http://www.gnu.org/licenses/>.
//
#include <testsuite_hooks.h>
#ifdef _GLIBCXX_RES_LIMITS
#include <unistd.h>
#include <sys/time.h>
#include <sys/resource.h>
#endif
#include <list>
#include <string>
#include <stdexcept>
#include <clocale>
#include <cstdlib>
#include <locale>
#include <cxxabi.h>
// If we have <sys/types.h>, <sys/ipc.h>, and <sys/sem.h>, then assume
// that System V semaphores are available.
#if defined(_GLIBCXX_HAVE_SYS_TYPES_H) \
&& defined(_GLIBCXX_HAVE_SYS_IPC_H) \
&& defined(_GLIBCXX_HAVE_SYS_SEM_H)
#define _GLIBCXX_SYSV_SEM
#endif
#ifdef _GLIBCXX_SYSV_SEM
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/sem.h>
#endif
namespace __gnu_test
{
#ifdef _GLIBCXX_RES_LIMITS
void
set_memory_limits(float size)
{
struct rlimit r;
// Cater to the absence of rlim_t.
__typeof__ (r.rlim_cur) limit = (__typeof__ (r.rlim_cur))(size * 1048576);
// Heap size, seems to be common.
#if _GLIBCXX_HAVE_LIMIT_DATA
getrlimit(RLIMIT_DATA, &r);
r.rlim_cur = limit;
setrlimit(RLIMIT_DATA, &r);
#endif
// Resident set size.
#if _GLIBCXX_HAVE_LIMIT_RSS
getrlimit(RLIMIT_RSS, &r);
r.rlim_cur = limit;
setrlimit(RLIMIT_RSS, &r);
#endif
// Mapped memory (brk + mmap).
#if _GLIBCXX_HAVE_LIMIT_VMEM
getrlimit(RLIMIT_VMEM, &r);
r.rlim_cur = limit;
setrlimit(RLIMIT_VMEM, &r);
#endif
// Virtual memory. On x86_64-linux, the default is -z
// max-page-size=0x200000 which means up to 2MB of address space
// are accounted for PROT_NONE mappings between text and data
// segments of each shared library. There are 4 shared libs
// involved in addition to the dynamic linker, maybe 5 if libgomp
// is being used as well. Use at least 20MB address space limit.
#if defined(__x86_64__) && defined(__linux__)
if (limit < 20971520)
limit = 20971520;
#endif
// On HP-UX 11.23, a trivial C++ program that sets RLIMIT_AS to
// anything less than 128MB cannot "malloc" even 1K of memory.
// Therefore, we skip RLIMIT_AS on HP-UX.
#if _GLIBCXX_HAVE_LIMIT_AS && !defined(__hpux__)
getrlimit(RLIMIT_AS, &r);
r.rlim_cur = limit;
setrlimit(RLIMIT_AS, &r);
#endif
}
#else
void
set_memory_limits(float) { }
#endif
#ifdef _GLIBCXX_RES_LIMITS
void
set_file_limit(unsigned long size)
{
#if _GLIBCXX_HAVE_LIMIT_FSIZE
struct rlimit r;
// Cater to the absence of rlim_t.
__typeof__ (r.rlim_cur) limit = (__typeof__ (r.rlim_cur))(size);
getrlimit(RLIMIT_FSIZE, &r);
r.rlim_cur = limit;
setrlimit(RLIMIT_FSIZE, &r);
#endif
}
#else
void
set_file_limit(unsigned long) { }
#endif
void
verify_demangle(const char* mangled, const char* wanted)
{
int status = 0;
const char* s = abi::__cxa_demangle(mangled, 0, 0, &status);
if (!s)
{
switch (status)
{
case 0:
s = "error code = 0: success";
break;
case -1:
s = "error code = -1: memory allocation failure";
break;
case -2:
s = "error code = -2: invalid mangled name";
break;
case -3:
s = "error code = -3: invalid arguments";
break;
default:
s = "error code unknown - who knows what happened";
}
}
std::string w(wanted);
if (w != s)
std::__throw_runtime_error(s);
}
void
run_tests_wrapped_locale(const char* name, const func_callback& l)
{
using namespace std;
// Set the global locale.
locale loc_name = locale(name);
locale orig = locale::global(loc_name);
const char* res = setlocale(LC_ALL, name);
if (res)
{
string preLC_ALL = res;
const func_callback::test_type* tests = l.tests();
for (int i = 0; i < l.size(); ++i)
(*tests[i])();
string postLC_ALL= setlocale(LC_ALL, 0);
VERIFY( preLC_ALL == postLC_ALL );
}
else
{
string s("LC_ALL for ");
s += name;
__throw_runtime_error(s.c_str());
}
}
void
run_tests_wrapped_env(const char* name, const char* env,
const func_callback& l)
{
using namespace std;
#ifdef _GLIBCXX_HAVE_SETENV
// Set the global locale.
locale loc_name = locale(name);
locale orig = locale::global(loc_name);
// Set environment variable env to value in name.
const char* oldENV = getenv(env);
if (!setenv(env, name, 1))
{
const func_callback::test_type* tests = l.tests();
for (int i = 0; i < l.size(); ++i)
(*tests[i])();
setenv(env, oldENV ? oldENV : "", 1);
}
else
{
string s(env);
s += string(" to ");
s += string(name);
__throw_runtime_error(s.c_str());
}
#endif
}
object_counter::size_type object_counter::count = 0;
unsigned int copy_constructor::count_ = 0;
unsigned int copy_constructor::throw_on_ = 0;
unsigned int assignment_operator::count_ = 0;
unsigned int assignment_operator::throw_on_ = 0;
unsigned int destructor::_M_count = 0;
int copy_tracker::next_id_ = 0;
#ifdef _GLIBCXX_SYSV_SEM
// This union is not declared in system headers. Instead, it must
// be defined by user programs.
union semun
{
int val;
struct semid_ds *buf;
unsigned short *array;
};
#endif
semaphore::semaphore()
{
#ifdef _GLIBCXX_SYSV_SEM
// Remember the PID for the process that created the semaphore set
// so that only one process will destroy the set.
pid_ = getpid();
// GLIBC does not define SEM_R and SEM_A.
#ifndef SEM_R
#define SEM_R 0400
#endif
#ifndef SEM_A
#define SEM_A 0200
#endif
// Get a semaphore set with one semaphore.
sem_set_ = semget(IPC_PRIVATE, 1, SEM_R | SEM_A);
if (sem_set_ == -1)
std::__throw_runtime_error("could not obtain semaphore set");
// Initialize the semaphore.
union semun val;
val.val = 0;
if (semctl(sem_set_, 0, SETVAL, val) == -1)
std::__throw_runtime_error("could not initialize semaphore");
#else
// There are no semaphores on this system. We have no way to mark
// a test as "unsupported" at runtime, so we just exit, pretending
// that the test passed.
exit(0);
#endif
}
semaphore::~semaphore()
{
#ifdef _GLIBCXX_SYSV_SEM
union semun val;
val.val = 0; // Avoid uninitialized variable warning.
// Destroy the semaphore set only in the process that created it.
if (pid_ == getpid())
semctl(sem_set_, 0, IPC_RMID, val);
#endif
}
void
semaphore::signal()
{
#ifdef _GLIBCXX_SYSV_SEM
struct sembuf op[1] =
{
{ 0, 1, 0 }
};
if (semop(sem_set_, op, 1) == -1)
std::__throw_runtime_error("could not signal semaphore");
#endif
}
void
semaphore::wait()
{
#ifdef _GLIBCXX_SYSV_SEM
struct sembuf op[1] =
{
{ 0, -1, SEM_UNDO }
};
if (semop(sem_set_, op, 1) == -1)
std::__throw_runtime_error("could not wait for semaphore");
#endif
}
// For use in 22_locale/time_get and time_put.
std::tm
test_tm(int sec, int min, int hour, int mday, int mon,
int year, int wday, int yday, int isdst)
{
static std::tm tmp;
tmp.tm_sec = sec;
tmp.tm_min = min;
tmp.tm_hour = hour;
tmp.tm_mday = mday;
tmp.tm_mon = mon;
tmp.tm_year = year;
tmp.tm_wday = wday;
tmp.tm_yday = yday;
tmp.tm_isdst = isdst;
return tmp;
}
} // namespace __gnu_test
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