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, 2009, 2010
   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 3, 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 COPYING3.  If not see
  21 // <http://www.gnu.org/licenses/>.
  22 //
  23
  24 #include <testsuite_hooks.h>
  25
  26 #ifdef _GLIBCXX_RES_LIMITS
  27 #include <unistd.h>
  28 #include <sys/time.h>
  29 #include <sys/resource.h>
  30 #endif
  31
  32 #include <list>
  33 #include <string>
  34 #include <stdexcept>
  35 #include <clocale>
  36 #include <cstdlib>
  37 #include <locale>
  38 #include <cxxabi.h>
  39
  40 // If we have <sys/types.h>, <sys/ipc.h>, and <sys/sem.h>, then assume
  41 // that System V semaphores are available.
  42 #if defined(_GLIBCXX_HAVE_SYS_TYPES_H)          \
  43     && defined(_GLIBCXX_HAVE_SYS_IPC_H)         \
  44     && defined(_GLIBCXX_HAVE_SYS_SEM_H)
  45 #define _GLIBCXX_SYSV_SEM
  46 #endif
  47
  48 #ifdef _GLIBCXX_SYSV_SEM
  49 #include <sys/types.h>
  50 #include <sys/ipc.h>
  51 #include <sys/sem.h>
  52 #endif
  53
  54 namespace __gnu_test
  55 {
  56 #ifdef _GLIBCXX_RES_LIMITS
  57   void
  58   set_memory_limits(float size)
  59   {
  60     struct rlimit r;
  61     // Cater to the absence of rlim_t.
  62     __typeof__ (r.rlim_cur) limit = (__typeof__ (r.rlim_cur))(size * 1048576);
  63
  64     // Heap size, seems to be common.
  65 #if _GLIBCXX_HAVE_LIMIT_DATA
  66     getrlimit(RLIMIT_DATA, &r);
  67     r.rlim_cur = limit;
  68     setrlimit(RLIMIT_DATA, &r);
  69 #endif
  70
  71     // Resident set size.
  72 #if _GLIBCXX_HAVE_LIMIT_RSS
  73     getrlimit(RLIMIT_RSS, &r);
  74     r.rlim_cur = limit;
  75     setrlimit(RLIMIT_RSS, &r);
  76 #endif
  77
  78     // Mapped memory (brk + mmap).
  79 #if _GLIBCXX_HAVE_LIMIT_VMEM
  80     getrlimit(RLIMIT_VMEM, &r);
  81     r.rlim_cur = limit;
  82     setrlimit(RLIMIT_VMEM, &r);
  83 #endif
  84
  85     // Virtual memory.  On x86_64-linux, the default is -z
  86     // max-page-size=0x200000 which means up to 2MB of address space
  87     // are accounted for PROT_NONE mappings between text and data
  88     // segments of each shared library.  There are 4 shared libs
  89     // involved in addition to the dynamic linker, maybe 5 if libgomp
  90     // is being used as well.  Use at least 20MB address space limit.
  91 #if defined(__x86_64__) && defined(__linux__)
  92     if (limit < 20971520)
  93       limit = 20971520;
  94 #endif
  95
  96     // On HP-UX 11.23, a trivial C++ program that sets RLIMIT_AS to
  97     // anything less than 128MB cannot "malloc" even 1K of memory.
  98     // Therefore, we skip RLIMIT_AS on HP-UX.
  99 #if _GLIBCXX_HAVE_LIMIT_AS && !defined(__hpux__)
 100     getrlimit(RLIMIT_AS, &r);
 101     r.rlim_cur = limit;
 102     setrlimit(RLIMIT_AS, &r);
 103 #endif
 104   }
 105
 106 #else
 107   void
 108   set_memory_limits(float) { }
 109 #endif
 110
 111 #ifdef _GLIBCXX_RES_LIMITS
 112   void
 113   set_file_limit(unsigned long size)
 114   {
 115 #if _GLIBCXX_HAVE_LIMIT_FSIZE
 116     struct rlimit r;
 117     // Cater to the absence of rlim_t.
 118     __typeof__ (r.rlim_cur) limit = (__typeof__ (r.rlim_cur))(size);
 119
 120     getrlimit(RLIMIT_FSIZE, &r);
 121     r.rlim_cur = limit;
 122     setrlimit(RLIMIT_FSIZE, &r);
 123 #endif
 124   }
 125
 126 #else
 127   void
 128   set_file_limit(unsigned long) { }
 129 #endif
 130
 131   void
 132   verify_demangle(const char* mangled, const char* wanted)
 133   {
 134     int status = 0;
 135     const char* s = abi::__cxa_demangle(mangled, 0, 0, &status);
 136     if (!s)
 137       {
 138         switch (status)
 139           {
 140           case 0:
 141             s = "error code = 0: success";
 142             break;
 143           case -1:
 144             s = "error code = -1: memory allocation failure";
 145             break;
 146           case -2:
 147             s = "error code = -2: invalid mangled name";
 148             break;
 149           case -3:
 150             s = "error code = -3: invalid arguments";
 151             break;
 152           default:
 153             s = "error code unknown - who knows what happened";
 154           }
 155       }
 156
 157     std::string w(wanted);
 158     if (w != s)
 159       std::__throw_runtime_error(s);
 160   }
 161
 162   void
 163   run_tests_wrapped_locale(const char* name, const func_callback& l)
 164   {
 165     using namespace std;
 166
 167     // Set the global locale.
 168     locale loc_name = locale(name);
 169     locale orig = locale::global(loc_name);
 170
 171     const char* res = setlocale(LC_ALL, name);
 172     if (res)
 173       {
 174         string preLC_ALL = res;
 175         const func_callback::test_type* tests = l.tests();
 176         for (int i = 0; i < l.size(); ++i)
 177           (*tests[i])();
 178         string postLC_ALL= setlocale(LC_ALL, 0);
 179         VERIFY( preLC_ALL == postLC_ALL );
 180       }
 181     else
 182       {
 183         string s("LC_ALL for ");
 184         s += name;
 185         __throw_runtime_error(s.c_str());
 186       }
 187   }
 188
 189   void
 190   run_tests_wrapped_env(const char* name, const char* env,
 191                         const func_callback& l)
 192   {
 193     using namespace std;
 194
 195 #ifdef _GLIBCXX_HAVE_SETENV
 196     // Set the global locale.
 197     locale loc_name = locale(name);
 198     locale orig = locale::global(loc_name);
 199
 200     // Set environment variable env to value in name.
 201     const char* oldENV = getenv(env);
 202     if (!setenv(env, name, 1))
 203       {
 204         const func_callback::test_type* tests = l.tests();
 205         for (int i = 0; i < l.size(); ++i)
 206           (*tests[i])();
 207         setenv(env, oldENV ? oldENV : "", 1);
 208       }
 209     else
 210       {
 211         string s(env);
 212         s += string(" to ");
 213         s += string(name);
 214         __throw_runtime_error(s.c_str());
 215       }
 216 #endif
 217   }
 218
 219   object_counter::size_type  object_counter::count = 0;
 220   unsigned int copy_constructor::count_ = 0;
 221   unsigned int copy_constructor::throw_on_ = 0;
 222   unsigned int assignment_operator::count_ = 0;
 223   unsigned int assignment_operator::throw_on_ = 0;
 224   unsigned int destructor::_M_count = 0;
 225   int copy_tracker::next_id_ = 0;
 226
 227 #ifdef _GLIBCXX_SYSV_SEM
 228   // This union is not declared in system headers.  Instead, it must
 229   // be defined by user programs.
 230   union semun
 231   {
 232     int val;
 233     struct semid_ds *buf;
 234     unsigned short *array;
 235   };
 236 #endif
 237
 238   semaphore::semaphore()
 239   {
 240 #ifdef _GLIBCXX_SYSV_SEM
 241     // Remeber the PID for the process that created the semaphore set
 242     // so that only one process will destroy the set.
 243     pid_ = getpid();
 244
 245     // GLIBC does not define SEM_R and SEM_A.
 246 #ifndef SEM_R
 247 #define SEM_R 0400
 248 #endif
 249
 250 #ifndef SEM_A
 251 #define SEM_A 0200
 252 #endif
 253
 254     // Get a semaphore set with one semaphore.
 255     sem_set_ = semget(IPC_PRIVATE, 1, SEM_R | SEM_A);
 256     if (sem_set_ == -1)
 257       std::__throw_runtime_error("could not obtain semaphore set");
 258
 259     // Initialize the semaphore.
 260     union semun val;
 261     val.val = 0;
 262     if (semctl(sem_set_, 0, SETVAL, val) == -1)
 263       std::__throw_runtime_error("could not initialize semaphore");
 264 #else
 265     // There are no semaphores on this system.  We have no way to mark
 266     // a test as "unsupported" at runtime, so we just exit, pretending
 267     // that the test passed.
 268     exit(0);
 269 #endif
 270   }
 271
 272   semaphore::~semaphore()
 273   {
 274 #ifdef _GLIBCXX_SYSV_SEM
 275     union semun val;
 276     val.val = 0; // Avoid uninitialized variable warning.
 277     // Destroy the semaphore set only in the process that created it.
 278     if (pid_ == getpid())
 279       semctl(sem_set_, 0, IPC_RMID, val);
 280 #endif
 281   }
 282
 283   void
 284   semaphore::signal()
 285   {
 286 #ifdef _GLIBCXX_SYSV_SEM
 287     struct sembuf op[1] =
 288       {
 289         { 0, 1, 0 }
 290       };
 291     if (semop(sem_set_, op, 1) == -1)
 292       std::__throw_runtime_error("could not signal semaphore");
 293 #endif
 294   }
 295
 296   void
 297   semaphore::wait()
 298   {
 299 #ifdef _GLIBCXX_SYSV_SEM
 300     struct sembuf op[1] =
 301       {
 302         { 0, -1, SEM_UNDO }
 303       };
 304     if (semop(sem_set_, op, 1) == -1)
 305       std::__throw_runtime_error("could not wait for semaphore");
 306 #endif
 307   }
 308
 309   // For use in 22_locale/time_get and time_put.
 310   std::tm
 311   test_tm(int sec, int min, int hour, int mday, int mon,
 312           int year, int wday, int yday, int isdst)
 313   {
 314     static std::tm tmp;
 315     tmp.tm_sec = sec;
 316     tmp.tm_min = min;
 317     tmp.tm_hour = hour;
 318     tmp.tm_mday = mday;
 319     tmp.tm_mon = mon;
 320     tmp.tm_year = year;
 321     tmp.tm_wday = wday;
 322     tmp.tm_yday = yday;
 323     tmp.tm_isdst = isdst;
 324     return tmp;
 325   }
 326 } // namespace __gnu_test