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

   1 // -*- C++ -*-
   2
   3 // Utility subroutines for the C++ library testsuite.
   4 //
   5 // Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008
   6 // Free Software Foundation, Inc.
   7 //
   8 // This file is part of the GNU ISO C++ Library.  This library is free
   9 // software; you can redistribute it and/or modify it under the
  10 // terms of the GNU General Public License as published by the
  11 // Free Software Foundation; either version 2, or (at your option)
  12 // any later version.
  13 //
  14 // This library is distributed in the hope that it will be useful,
  15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 // GNU General Public License for more details.
  18 //
  19 // You should have received a copy of the GNU General Public License along
  20 // with this library; see the file COPYING.  If not, write to the Free
  21 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  22 // USA.
  23 //
  24 // As a special exception, you may use this file as part of a free software
  25 // library without restriction.  Specifically, if other files instantiate
  26 // templates or use macros or inline functions from this file, or you compile
  27 // this file and link it with other files to produce an executable, this
  28 // file does not by itself cause the resulting executable to be covered by
  29 // the GNU General Public License.  This exception does not however
  30 // invalidate any other reasons why the executable file might be covered by
  31 // the GNU General Public License.
  32
  33 #include <testsuite_hooks.h>
  34
  35 #ifdef _GLIBCXX_RES_LIMITS
  36 #include <unistd.h>
  37 #include <sys/time.h>
  38 #include <sys/resource.h>
  39 #endif
  40
  41 #include <list>
  42 #include <string>
  43 #include <stdexcept>
  44 #include <cstddef>
  45 #include <clocale>
  46 #include <cstdlib>
  47 #include <locale>
  48 #include <cxxabi.h>
  49
  50 // If we have <sys/types.h>, <sys/ipc.h>, and <sys/sem.h>, then assume
  51 // that System V semaphores are available.
  52 #if defined(_GLIBCXX_HAVE_SYS_TYPES_H)          \
  53     && defined(_GLIBCXX_HAVE_SYS_IPC_H)         \
  54     && defined(_GLIBCXX_HAVE_SYS_SEM_H)
  55 #define _GLIBCXX_SYSV_SEM
  56 #endif
  57
  58 #ifdef _GLIBCXX_SYSV_SEM
  59 #include <sys/types.h>
  60 #include <sys/ipc.h>
  61 #include <sys/sem.h>
  62 #endif
  63
  64 namespace __gnu_test
  65 {
  66 #ifdef _GLIBCXX_RES_LIMITS
  67   void
  68   set_memory_limits(float size)
  69   {
  70     struct rlimit r;
  71     // Cater to the absence of rlim_t.
  72     __typeof__ (r.rlim_cur) limit = (__typeof__ (r.rlim_cur))(size * 1048576);
  73
  74     // Heap size, seems to be common.
  75 #if _GLIBCXX_HAVE_LIMIT_DATA
  76     getrlimit(RLIMIT_DATA, &r);
  77     r.rlim_cur = limit;
  78     setrlimit(RLIMIT_DATA, &r);
  79 #endif
  80
  81     // Resident set size.
  82 #if _GLIBCXX_HAVE_LIMIT_RSS
  83     getrlimit(RLIMIT_RSS, &r);
  84     r.rlim_cur = limit;
  85     setrlimit(RLIMIT_RSS, &r);
  86 #endif
  87
  88     // Mapped memory (brk + mmap).
  89 #if _GLIBCXX_HAVE_LIMIT_VMEM
  90     getrlimit(RLIMIT_VMEM, &r);
  91     r.rlim_cur = limit;
  92     setrlimit(RLIMIT_VMEM, &r);
  93 #endif
  94
  95     // Virtual memory.  On x86_64-linux, the default is -z
  96     // max-page-size=0x200000 which means up to 2MB of address space
  97     // are accounted for PROT_NONE mappings between text and data
  98     // segments of each shared library.  There are 4 shared libs
  99     // involved in addition to the dynamic linker, maybe 5 if libgomp
 100     // is being used as well.  Use at least 20MB address space limit.
 101 #if defined(__x86_64__) && defined(__linux__)
 102     if (limit < 20971520)
 103       limit = 20971520;
 104 #endif
 105
 106     // On HP-UX 11.23, a trivial C++ program that sets RLIMIT_AS to
 107     // anything less than 128MB cannot "malloc" even 1K of memory.
 108     // Therefore, we skip RLIMIT_AS on HP-UX.
 109 #if _GLIBCXX_HAVE_LIMIT_AS && !defined(__hpux__)
 110     getrlimit(RLIMIT_AS, &r);
 111     r.rlim_cur = limit;
 112     setrlimit(RLIMIT_AS, &r);
 113 #endif
 114   }
 115
 116 #else
 117   void
 118   set_memory_limits(float) { }
 119 #endif
 120
 121 #ifdef _GLIBCXX_RES_LIMITS
 122   void
 123   set_file_limit(unsigned long size)
 124   {
 125 #if _GLIBCXX_HAVE_LIMIT_FSIZE
 126     struct rlimit r;
 127     // Cater to the absence of rlim_t.
 128     __typeof__ (r.rlim_cur) limit = (__typeof__ (r.rlim_cur))(size);
 129
 130     getrlimit(RLIMIT_FSIZE, &r);
 131     r.rlim_cur = limit;
 132     setrlimit(RLIMIT_FSIZE, &r);
 133 #endif
 134   }
 135
 136 #else
 137   void
 138   set_file_limit(unsigned long) { }
 139 #endif
 140
 141   void
 142   verify_demangle(const char* mangled, const char* wanted)
 143   {
 144     int status = 0;
 145     const char* s = abi::__cxa_demangle(mangled, 0, 0, &status);
 146     if (!s)
 147       {
 148         switch (status)
 149           {
 150           case 0:
 151             s = "error code = 0: success";
 152             break;
 153           case -1:
 154             s = "error code = -1: memory allocation failure";
 155             break;
 156           case -2:
 157             s = "error code = -2: invalid mangled name";
 158             break;
 159           case -3:
 160             s = "error code = -3: invalid arguments";
 161             break;
 162           default:
 163             s = "error code unknown - who knows what happened";
 164           }
 165       }
 166
 167     std::string w(wanted);
 168     if (w != s)
 169       std::__throw_runtime_error(s);
 170   }
 171
 172   void
 173   run_tests_wrapped_locale(const char* name, const func_callback& l)
 174   {
 175     using namespace std;
 176
 177     // Set the global locale.
 178     locale loc_name = locale(name);
 179     locale orig = locale::global(loc_name);
 180
 181     const char* res = setlocale(LC_ALL, name);
 182     if (res != NULL)
 183       {
 184         string preLC_ALL = res;
 185         const func_callback::test_type* tests = l.tests();
 186         for (int i = 0; i < l.size(); ++i)
 187           (*tests[i])();
 188         string postLC_ALL= setlocale(LC_ALL, NULL);
 189         VERIFY( preLC_ALL == postLC_ALL );
 190       }
 191     else
 192       {
 193         string s("LC_ALL for ");
 194         s += name;
 195         __throw_runtime_error(s.c_str());
 196       }
 197   }
 198
 199   void
 200   run_tests_wrapped_env(const char* name, const char* env,
 201                         const func_callback& l)
 202   {
 203     using namespace std;
 204
 205 #ifdef _GLIBCXX_HAVE_SETENV
 206     // Set the global locale.
 207     locale loc_name = locale(name);
 208     locale orig = locale::global(loc_name);
 209
 210     // Set environment variable env to value in name.
 211     const char* oldENV = getenv(env);
 212     if (!setenv(env, name, 1))
 213       {
 214         const func_callback::test_type* tests = l.tests();
 215         for (int i = 0; i < l.size(); ++i)
 216           (*tests[i])();
 217         setenv(env, oldENV ? oldENV : "", 1);
 218       }
 219     else
 220       {
 221         string s(env);
 222         s += string(" to ");
 223         s += string(name);
 224         __throw_runtime_error(s.c_str());
 225       }
 226 #endif
 227   }
 228
 229   counter::size_type  counter::count = 0;
 230   unsigned int copy_constructor::count_ = 0;
 231   unsigned int copy_constructor::throw_on_ = 0;
 232   unsigned int assignment_operator::count_ = 0;
 233   unsigned int assignment_operator::throw_on_ = 0;
 234   unsigned int destructor::_M_count = 0;
 235   int copy_tracker::next_id_ = 0;
 236
 237 #ifdef _GLIBCXX_SYSV_SEM
 238   // This union is not declared in system headers.  Instead, it must
 239   // be defined by user programs.
 240   union semun
 241   {
 242     int val;
 243     struct semid_ds *buf;
 244     unsigned short *array;
 245   };
 246 #endif
 247
 248   semaphore::semaphore()
 249   {
 250 #ifdef _GLIBCXX_SYSV_SEM
 251     // Remeber the PID for the process that created the semaphore set
 252     // so that only one process will destroy the set.
 253     pid_ = getpid();
 254
 255     // GLIBC does not define SEM_R and SEM_A.
 256 #ifndef SEM_R
 257 #define SEM_R 0400
 258 #endif
 259
 260 #ifndef SEM_A
 261 #define SEM_A 0200
 262 #endif
 263
 264     // Get a semaphore set with one semaphore.
 265     sem_set_ = semget(IPC_PRIVATE, 1, SEM_R | SEM_A);
 266     if (sem_set_ == -1)
 267       std::__throw_runtime_error("could not obtain semaphore set");
 268
 269     // Initialize the semaphore.
 270     union semun val;
 271     val.val = 0;
 272     if (semctl(sem_set_, 0, SETVAL, val) == -1)
 273       std::__throw_runtime_error("could not initialize semaphore");
 274 #else
 275     // There are no semaphores on this system.  We have no way to mark
 276     // a test as "unsupported" at runtime, so we just exit, pretending
 277     // that the test passed.
 278     exit(0);
 279 #endif
 280   }
 281
 282   semaphore::~semaphore()
 283   {
 284 #ifdef _GLIBCXX_SYSV_SEM
 285     union semun val;
 286     val.val = 0; // Avoid uninitialized variable warning.
 287     // Destroy the semaphore set only in the process that created it.
 288     if (pid_ == getpid())
 289       semctl(sem_set_, 0, IPC_RMID, val);
 290 #endif
 291   }
 292
 293   void
 294   semaphore::signal()
 295   {
 296 #ifdef _GLIBCXX_SYSV_SEM
 297     struct sembuf op[1] =
 298       {
 299         { 0, 1, 0 }
 300       };
 301     if (semop(sem_set_, op, 1) == -1)
 302       std::__throw_runtime_error("could not signal semaphore");
 303 #endif
 304   }
 305
 306   void
 307   semaphore::wait()
 308   {
 309 #ifdef _GLIBCXX_SYSV_SEM
 310     struct sembuf op[1] =
 311       {
 312         { 0, -1, SEM_UNDO }
 313       };
 314     if (semop(sem_set_, op, 1) == -1)
 315       std::__throw_runtime_error("could not wait for semaphore");
 316 #endif
 317   }
 318
 319   // For use in 22_locale/time_get and time_put.
 320   std::tm
 321   test_tm(int sec, int min, int hour, int mday, int mon,
 322           int year, int wday, int yday, int isdst)
 323   {
 324     static std::tm tmp;
 325     tmp.tm_sec = sec;
 326     tmp.tm_min = min;
 327     tmp.tm_hour = hour;
 328     tmp.tm_mday = mday;
 329     tmp.tm_mon = mon;
 330     tmp.tm_year = year;
 331     tmp.tm_wday = wday;
 332     tmp.tm_yday = yday;
 333     tmp.tm_isdst = isdst;
 334     return tmp;
 335   }
 336 } // namespace __gnu_test