libstdc++-v3/testsuite/testsuite_hooks.cc

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