server/common/utils.C

/*
 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
 *
 * Copyright (©) 2017,2018 Marc Alexander Lehmann / the Deliantra team
 * Copyright (©) 2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
 *
 * Deliantra is free software: you can redistribute it and/or modify it under
 * the terms of the Affero GNU General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at your
 * option) any later version.
 *
 * This program 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 Affero GNU General Public License
 * and the GNU General Public License along with this program. If not, see
 * <http://www.gnu.org/licenses/>.
 *
 * The authors can be reached via e-mail to <support@deliantra.net>
 */

/*
 * General convenience functions for deliantra.
 */

#include <cstdlib>
#include <sys/types.h>
#include <unistd.h>
#include <sys/time.h>
#include <time.h>
#include <signal.h>

#include <global.h>
#include <material.h>
#include <object.h>

#include <sys/time.h>
#include <sys/resource.h>

#include <glib.h>

refcnt_base::refcnt_t refcnt_dummy;
ssize_t slice_alloc;

/******************************************************************************/

/* Checks a player-provided string which will become the msg property of
 * an object for dangerous input.
 */
bool
msg_is_safe (const char *msg)
{
  bool safe = true;

  /* Trying to cheat by getting data into the object */
  if (!strncmp (msg, "endmsg", sizeof ("endmsg") - 1)
      || strstr (msg, "\nendmsg"))
    safe = false;

  /* Trying to make the object talk, and potentially access arbitrary code */
  if (object::msg_has_dialogue (msg))
    safe = false;

  return safe;
}

/////////////////////////////////////////////////////////////////////////////

void
fork_abort (const char *msg)
{
  if (!fork ())
    {
      signal (SIGINT , SIG_IGN);
      signal (SIGTERM, SIG_IGN);
      signal (SIGABRT, SIG_IGN);

      signal (SIGSEGV, SIG_DFL);
      signal (SIGFPE , SIG_DFL);
#ifdef SIGBUS
      signal (SIGBUS , SIG_DFL);
#endif
      signal (SIGILL , SIG_DFL);
      signal (SIGTRAP, SIG_DFL);

      // try to put corefiles into a subdirectory, if existing, to allow
      // an administrator to reduce the I/O load.
      chdir ("cores");

      // try to detach us from as many external dependencies as possible
      // as coredumping can take time by closing all fd's.
      {
        struct rlimit lim;

        if (getrlimit (RLIMIT_NOFILE, &lim))
          lim.rlim_cur = 1024;

        for (int i = 0; i < lim.rlim_cur; ++i)
          close (i);
      }

      {
        sigset_t empty;
        sigemptyset (&empty);
        sigprocmask (SIG_SETMASK, &empty, 0);
      }

      // try to coredump with SIGTRAP
      kill (getpid (), SIGTRAP);
      abort ();
    }

  LOG (llevError, "fork abort: %s\n", msg);
}

void *
salloc_ (int n)
{
  void *ptr = g_slice_alloc (n);

  if (!ptr)
    throw std::bad_alloc ();

  slice_alloc += n;
  return ptr;
}

void *
salloc_ (int n, void *src)
{
  void *ptr = salloc_ (n);

  if (src)
    memcpy (ptr, src, n);
  else
    memset (ptr, 0, n);

  return ptr;
}

/******************************************************************************/

#if DEBUG_SALLOC

#define MAGIC 0xa1b2c35543deadLL

void *
g_slice_alloc (unsigned long size)
{
  unsigned long *p = (unsigned long *) (g_slice_alloc)(size + sizeof (unsigned long));
  *p++ = size ^ MAGIC;
  //fprintf (stderr, "g_slice_alloc %ld %p\n", size, p);//D
  return (void *)p;
}

void *
g_slice_alloc0 (unsigned long size)
{
  return memset (g_slice_alloc (size), 0, size);
}

void
g_slice_free1 (unsigned long size, void *ptr)
{
  //fprintf (stderr, "g_slice_free %ld %p\n", size, ptr);//D
  if (ecb_expect_true (ptr))
    {
      unsigned long *p = (unsigned long *)ptr;
      unsigned long s = *--p ^ MAGIC;

      if (size != (unsigned long)(*p ^ MAGIC))
        {
          LOG (logBacktrace | llevError, "slice free size (%lx) doesn't match alloc size (%lx)\n", size, s);
          abort ();
        }

      *p = MAGIC;

      (g_slice_free1)(s + sizeof (unsigned long), p);
    }
}

#endif

/******************************************************************************/

refcnt_buf::refcnt_buf (size_t size)
{
  static uint32_t empty_buf [2] = { 0, 1 }; // 2 == never deallocated
  data = (char *)empty_buf + overhead;
  assert (overhead == sizeof (empty_buf));
  inc ();
}

refcnt_buf::refcnt_buf (void *data, size_t size)
{
  _alloc (size);
  memcpy (this->data, data, size);
}

refcnt_buf::~refcnt_buf ()
{
  dec ();
}

void
refcnt_buf::_dealloc ()
{
  sfree<char> (data - overhead, size () + overhead);
}

refcnt_buf &
refcnt_buf::operator =(const refcnt_buf &src)
{
  dec ();
  data = src.data;
  inc ();
  return *this;
}

/******************************************************************************/

int
assign (char *dst, const char *src, int maxsize)
{
  if (!src)
    src = "";

  int len = strlen (src);

  if (len >= maxsize)
    {
      if (maxsize <= 4)
        {
          memset (dst, '.', maxsize - 2);
          dst [maxsize - 1] = 0;
        }
      else
        {
          memcpy (dst, src, maxsize - 4);
          memcpy (dst + maxsize - 4, "...", 4);
        }

      len = maxsize;
    }
  else
    memcpy (dst, src, ++len);

  return len;
}

char *
vformat (const char *format, va_list ap)
{
  static dynbuf_text bufs[8];
  static int bufidx;

  dynbuf_text &buf = bufs [++bufidx & 7];

  buf.clear ();
  buf.vprintf (format, ap);
  return buf;
}

char *
format (const char *format, ...)
{
  va_list ap;
  va_start (ap, format);
  char *buf = vformat (format, ap);
  va_end (ap);

  return buf;
}

tstamp
now ()
{
  struct timeval tv;

  gettimeofday (&tv, 0);
  return tstamp (tv.tv_sec) + tstamp (tv.tv_usec) * tstamp (1e-6);
}

int
similar_direction (int a, int b)
{
  if (!a || !b)
    return 0;

  int diff = (b - a) & 7;
  return diff <= 1 || diff >= 7;
}

/* crc32 0xdebb20e3 table and supplementary functions.  */
extern const uint32_t crc_32_tab[256] =
{
    0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL,
    0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL,
    0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL,
    0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL,
    0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL,
    0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL,
    0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL,
    0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL,
    0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL,
    0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL,
    0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL,
    0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL,
    0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL,
    0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL,
    0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL,
    0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL,
    0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL,
    0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL,
    0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL,
    0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL,
    0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL,
    0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL,
    0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL,
    0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL,
    0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL,
    0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL,
    0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL,
    0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL,
    0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL,
    0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL,
    0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL,
    0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL,
    0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL,
    0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL,
    0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL,
    0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL,
    0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL,
    0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL,
    0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL,
    0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL,
    0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL,
    0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL,
    0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL,
    0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL,
    0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL,
    0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL,
    0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL,
    0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL,
    0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL,
    0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL,
    0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL,
    0x2d02ef8dL
};

void
thread::start (void *(*start_routine)(void *), void *arg)
{
  pthread_attr_t attr;

  pthread_attr_init (&attr);
  pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
  pthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN < sizeof (long) * 4096
                                    ? sizeof (long) * 4096 : PTHREAD_STACK_MIN);
#ifdef PTHREAD_SCOPE_PROCESS
  pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
#endif

  sigset_t fullsigset, oldsigset;
  sigfillset (&fullsigset);

  pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);

  if (pthread_create (&id, &attr, start_routine, arg))
    cleanup ("unable to create a new thread");

  pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
}

Revision:	1.109
Committed:	Wed Dec 5 19:03:26 2018 UTC (5 years, 5 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.108:	+1 -1 lines
Log Message:	some bugfixes
#	Content
1	/*
2	* This file is part of Deliantra, the Roguelike Realtime MMORPG.
3	*
4	* Copyright (©) 2017,2018 Marc Alexander Lehmann / the Deliantra team
5	* Copyright (©) 2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
6	*
7	* Deliantra is free software: you can redistribute it and/or modify it under
8	* the terms of the Affero GNU General Public License as published by the
9	* Free Software Foundation, either version 3 of the License, or (at your
10	* option) any later version.
11	*
12	* This program is distributed in the hope that it will be useful,
13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15	* GNU General Public License for more details.
16	*
17	* You should have received a copy of the Affero GNU General Public License
18	* and the GNU General Public License along with this program. If not, see
19	* <http://www.gnu.org/licenses/>.
20	*
21	* The authors can be reached via e-mail to <support@deliantra.net>
22	*/
23
24	/*
25	* General convenience functions for deliantra.
26	*/
27
28	#include <cstdlib>
29	#include <sys/types.h>
30	#include <unistd.h>
31	#include <sys/time.h>
32	#include <time.h>
33	#include <signal.h>
34
35	#include <global.h>
36	#include <material.h>
37	#include <object.h>
38
39	#include <sys/time.h>
40	#include <sys/resource.h>
41
42	#include <glib.h>
43
44	refcnt_base::refcnt_t refcnt_dummy;
45	ssize_t slice_alloc;
46
47	/******************************************************************************/
48
49	/* Checks a player-provided string which will become the msg property of
50	* an object for dangerous input.
51	*/
52	bool
53	msg_is_safe (const char *msg)
54	{
55	bool safe = true;
56
57	/* Trying to cheat by getting data into the object */
58	if (!strncmp (msg, "endmsg", sizeof ("endmsg") - 1)
59	\|\| strstr (msg, "\nendmsg"))
60	safe = false;
61
62	/* Trying to make the object talk, and potentially access arbitrary code */
63	if (object::msg_has_dialogue (msg))
64	safe = false;
65
66	return safe;
67	}
68
69	/////////////////////////////////////////////////////////////////////////////
70
71	void
72	fork_abort (const char *msg)
73	{
74	if (!fork ())
75	{
76	signal (SIGINT , SIG_IGN);
77	signal (SIGTERM, SIG_IGN);
78	signal (SIGABRT, SIG_IGN);
79
80	signal (SIGSEGV, SIG_DFL);
81	signal (SIGFPE , SIG_DFL);
82	#ifdef SIGBUS
83	signal (SIGBUS , SIG_DFL);
84	#endif
85	signal (SIGILL , SIG_DFL);
86	signal (SIGTRAP, SIG_DFL);
87
88	// try to put corefiles into a subdirectory, if existing, to allow
89	// an administrator to reduce the I/O load.
90	chdir ("cores");
91
92	// try to detach us from as many external dependencies as possible
93	// as coredumping can take time by closing all fd's.
94	{
95	struct rlimit lim;
96
97	if (getrlimit (RLIMIT_NOFILE, &lim))
98	lim.rlim_cur = 1024;
99
100	for (int i = 0; i < lim.rlim_cur; ++i)
101	close (i);
102	}
103
104	{
105	sigset_t empty;
106	sigemptyset (&empty);
107	sigprocmask (SIG_SETMASK, &empty, 0);
108	}
109
110	// try to coredump with SIGTRAP
111	kill (getpid (), SIGTRAP);
112	abort ();
113	}
114
115	LOG (llevError, "fork abort: %s\n", msg);
116	}
117
118	void *
119	salloc_ (int n)
120	{
121	void *ptr = g_slice_alloc (n);
122
123	if (!ptr)
124	throw std::bad_alloc ();
125
126	slice_alloc += n;
127	return ptr;
128	}
129
130	void *
131	salloc_ (int n, void *src)
132	{
133	void *ptr = salloc_ (n);
134
135	if (src)
136	memcpy (ptr, src, n);
137	else
138	memset (ptr, 0, n);
139
140	return ptr;
141	}
142
143	/******************************************************************************/
144
145	#if DEBUG_SALLOC
146
147	#define MAGIC 0xa1b2c35543deadLL
148
149	void *
150	g_slice_alloc (unsigned long size)
151	{
152	unsigned long p = (unsigned long ) (g_slice_alloc)(size + sizeof (unsigned long));
153	*p++ = size ^ MAGIC;
154	//fprintf (stderr, "g_slice_alloc %ld %p\n", size, p);//D
155	return (void *)p;
156	}
157
158	void *
159	g_slice_alloc0 (unsigned long size)
160	{
161	return memset (g_slice_alloc (size), 0, size);
162	}
163
164	void
165	g_slice_free1 (unsigned long size, void *ptr)
166	{
167	//fprintf (stderr, "g_slice_free %ld %p\n", size, ptr);//D
168	if (ecb_expect_true (ptr))
169	{
170	unsigned long p = (unsigned long )ptr;
171	unsigned long s = *--p ^ MAGIC;
172
173	if (size != (unsigned long)(*p ^ MAGIC))
174	{
175	LOG (logBacktrace \| llevError, "slice free size (%lx) doesn't match alloc size (%lx)\n", size, s);
176	abort ();
177	}
178
179	*p = MAGIC;
180
181	(g_slice_free1)(s + sizeof (unsigned long), p);
182	}
183	}
184
185	#endif
186
187	/******************************************************************************/
188
189	refcnt_buf::refcnt_buf (size_t size)
190	{
191	static uint32_t empty_buf [2] = { 0, 1 }; // 2 == never deallocated
192	data = (char *)empty_buf + overhead;
193	assert (overhead == sizeof (empty_buf));
194	inc ();
195	}
196
197	refcnt_buf::refcnt_buf (void *data, size_t size)
198	{
199	_alloc (size);
200	memcpy (this->data, data, size);
201	}
202
203	refcnt_buf::~refcnt_buf ()
204	{
205	dec ();
206	}
207
208	void
209	refcnt_buf::_dealloc ()
210	{
211	sfree<char> (data - overhead, size () + overhead);
212	}
213
214	refcnt_buf &
215	refcnt_buf::operator =(const refcnt_buf &src)
216	{
217	dec ();
218	data = src.data;
219	inc ();
220	return *this;
221	}
222
223	/******************************************************************************/
224
225	int
226	assign (char dst, const char src, int maxsize)
227	{
228	if (!src)
229	src = "";
230
231	int len = strlen (src);
232
233	if (len >= maxsize)
234	{
235	if (maxsize <= 4)
236	{
237	memset (dst, '.', maxsize - 2);
238	dst [maxsize - 1] = 0;
239	}
240	else
241	{
242	memcpy (dst, src, maxsize - 4);
243	memcpy (dst + maxsize - 4, "...", 4);
244	}
245
246	len = maxsize;
247	}
248	else
249	memcpy (dst, src, ++len);
250
251	return len;
252	}
253
254	char *
255	vformat (const char *format, va_list ap)
256	{
257	static dynbuf_text bufs[8];
258	static int bufidx;
259
260	dynbuf_text &buf = bufs [++bufidx & 7];
261
262	buf.clear ();
263	buf.vprintf (format, ap);
264	return buf;
265	}
266
267	char *
268	format (const char *format, ...)
269	{
270	va_list ap;
271	va_start (ap, format);
272	char *buf = vformat (format, ap);
273	va_end (ap);
274
275	return buf;
276	}
277
278	tstamp
279	now ()
280	{
281	struct timeval tv;
282
283	gettimeofday (&tv, 0);
284	return tstamp (tv.tv_sec) + tstamp (tv.tv_usec) * tstamp (1e-6);
285	}
286
287	int
288	similar_direction (int a, int b)
289	{
290	if (!a \|\| !b)
291	return 0;
292
293	int diff = (b - a) & 7;
294	return diff <= 1 \|\| diff >= 7;
295	}
296
297	/* crc32 0xdebb20e3 table and supplementary functions. */
298	extern const uint32_t crc_32_tab[256] =
299	{
300	0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL,
301	0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL,
302	0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL,
303	0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL,
304	0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL,
305	0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL,
306	0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL,
307	0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL,
308	0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL,
309	0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL,
310	0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL,
311	0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL,
312	0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL,
313	0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL,
314	0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL,
315	0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL,
316	0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL,
317	0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL,
318	0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL,
319	0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL,
320	0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL,
321	0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL,
322	0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL,
323	0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL,
324	0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL,
325	0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL,
326	0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL,
327	0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL,
328	0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL,
329	0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL,
330	0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL,
331	0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL,
332	0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL,
333	0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL,
334	0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL,
335	0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL,
336	0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL,
337	0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL,
338	0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL,
339	0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL,
340	0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL,
341	0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL,
342	0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL,
343	0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL,
344	0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL,
345	0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL,
346	0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL,
347	0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL,
348	0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL,
349	0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL,
350	0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL,
351	0x2d02ef8dL
352	};
353
354	void
355	thread::start (void (start_routine)(void ), void arg)
356	{
357	pthread_attr_t attr;
358
359	pthread_attr_init (&attr);
360	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
361	pthread_attr_setstacksize (&attr, PTHREAD_STACK_MIN < sizeof (long) * 4096
362	? sizeof (long) * 4096 : PTHREAD_STACK_MIN);
363	#ifdef PTHREAD_SCOPE_PROCESS
364	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
365	#endif
366
367	sigset_t fullsigset, oldsigset;
368	sigfillset (&fullsigset);
369
370	pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
371
372	if (pthread_create (&id, &attr, start_routine, arg))
373	cleanup ("unable to create a new thread");
374
375	pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
376	}
377