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restore old plan 9 property that when the last thread exits the main proc, the remaining program ends up in the background and the program appears to have exited.
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  1 f1e8706d 2004-12-27 devnull #include "threadimpl.h"

  2 f1e8706d 2004-12-27 devnull 

  3 f1e8706d 2004-12-27 devnull /*

  4 f1e8706d 2004-12-27 devnull  * spin locks

  5 f1e8706d 2004-12-27 devnull  */

  6 f1e8706d 2004-12-27 devnull extern int _tas(int*);

  7 f1e8706d 2004-12-27 devnull 

  8 f1e8706d 2004-12-27 devnull void

  9 f1e8706d 2004-12-27 devnull _threadunlock(Lock *l, ulong pc)

 10 f1e8706d 2004-12-27 devnull {

 11 f1e8706d 2004-12-27 devnull 	USED(pc);

 12 f1e8706d 2004-12-27 devnull 

 13 f1e8706d 2004-12-27 devnull 	l->held = 0;

 14 f1e8706d 2004-12-27 devnull }

 15 f1e8706d 2004-12-27 devnull 

 16 f1e8706d 2004-12-27 devnull int

 17 f1e8706d 2004-12-27 devnull _threadlock(Lock *l, int block, ulong pc)

 18 f1e8706d 2004-12-27 devnull {

 19 f1e8706d 2004-12-27 devnull 	int i;

 20 f1e8706d 2004-12-27 devnull 

 21 f1e8706d 2004-12-27 devnull 	USED(pc);

 22 f1e8706d 2004-12-27 devnull 

 23 f1e8706d 2004-12-27 devnull 	/* once fast */

 24 f1e8706d 2004-12-27 devnull 	if(!_tas(&l->held))

 25 f1e8706d 2004-12-27 devnull 		return 1;

 26 f1e8706d 2004-12-27 devnull 	if(!block)

 27 f1e8706d 2004-12-27 devnull 		return 0;

 28 f1e8706d 2004-12-27 devnull 

 29 f1e8706d 2004-12-27 devnull 	/* a thousand times pretty fast */

 30 f1e8706d 2004-12-27 devnull 	for(i=0; i<1000; i++){

 31 f1e8706d 2004-12-27 devnull 		if(!_tas(&l->held))

 32 f1e8706d 2004-12-27 devnull 			return 1;

 33 f1e8706d 2004-12-27 devnull 		sched_yield();

 34 f1e8706d 2004-12-27 devnull 	}

 35 f1e8706d 2004-12-27 devnull 	/* now nice and slow */

 36 f1e8706d 2004-12-27 devnull 	for(i=0; i<1000; i++){

 37 f1e8706d 2004-12-27 devnull 		if(!_tas(&l->held))

 38 f1e8706d 2004-12-27 devnull 			return 1;

 39 f1e8706d 2004-12-27 devnull 		usleep(100*1000);

 40 f1e8706d 2004-12-27 devnull 	}

 41 f1e8706d 2004-12-27 devnull 	/* take your time */

 42 f1e8706d 2004-12-27 devnull 	while(_tas(&l->held))

 43 f1e8706d 2004-12-27 devnull 		usleep(1000*1000);

 44 f1e8706d 2004-12-27 devnull 	return 1;

 45 f1e8706d 2004-12-27 devnull }

 46 f1e8706d 2004-12-27 devnull 

 47 f1e8706d 2004-12-27 devnull /*

 48 f1e8706d 2004-12-27 devnull  * sleep and wakeup

 49 f1e8706d 2004-12-27 devnull  */

 50 f1e8706d 2004-12-27 devnull static void

 51 f1e8706d 2004-12-27 devnull ign(int x)

 52 f1e8706d 2004-12-27 devnull {

 53 f1e8706d 2004-12-27 devnull 	USED(x);

 54 f1e8706d 2004-12-27 devnull }

 55 f1e8706d 2004-12-27 devnull 

 56 f1e8706d 2004-12-27 devnull static void /*__attribute__((constructor))*/

 57 f1e8706d 2004-12-27 devnull ignusr1(int restart)

 58 f1e8706d 2004-12-27 devnull {

 59 f1e8706d 2004-12-27 devnull 	struct sigaction sa;

 60 f1e8706d 2004-12-27 devnull 

 61 f1e8706d 2004-12-27 devnull 	memset(&sa, 0, sizeof sa);

 62 f1e8706d 2004-12-27 devnull 	sa.sa_handler = ign;

 63 f1e8706d 2004-12-27 devnull 	sigemptyset(&sa.sa_mask);

 64 f1e8706d 2004-12-27 devnull 	sigaddset(&sa.sa_mask, SIGUSR1);

 65 f1e8706d 2004-12-27 devnull 	if(restart)

 66 f1e8706d 2004-12-27 devnull 		sa.sa_flags = SA_RESTART;

 67 f1e8706d 2004-12-27 devnull 	sigaction(SIGUSR1, &sa, nil);

 68 f1e8706d 2004-12-27 devnull }

 69 f1e8706d 2004-12-27 devnull 

 70 f1e8706d 2004-12-27 devnull void

 71 f1e8706d 2004-12-27 devnull _procsleep(_Procrendez *r)

 72 f1e8706d 2004-12-27 devnull {

 73 f1e8706d 2004-12-27 devnull 	sigset_t mask;

 74 f1e8706d 2004-12-27 devnull 

 75 f1e8706d 2004-12-27 devnull 	/*

 76 f1e8706d 2004-12-27 devnull 	 * Go to sleep.

 77 f1e8706d 2004-12-27 devnull 	 *

 78 f1e8706d 2004-12-27 devnull 	 * Block USR1, set the handler to interrupt system calls,

 79 f1e8706d 2004-12-27 devnull 	 * unlock the vouslock so our waker can wake us,

 80 f1e8706d 2004-12-27 devnull 	 * and then suspend.

 81 f1e8706d 2004-12-27 devnull 	 */

 82 955a2ca7 2004-12-27 devnull again:

 83 f1e8706d 2004-12-27 devnull 	r->asleep = 1;

 84 f1e8706d 2004-12-27 devnull 	r->pid = getpid();

 85 f1e8706d 2004-12-27 devnull 

 86 f1e8706d 2004-12-27 devnull 	sigprocmask(SIG_SETMASK, nil, &mask);

 87 f1e8706d 2004-12-27 devnull 	sigaddset(&mask, SIGUSR1);

 88 f1e8706d 2004-12-27 devnull 	sigprocmask(SIG_SETMASK, &mask, nil);

 89 f1e8706d 2004-12-27 devnull 	ignusr1(0);

 90 f1e8706d 2004-12-27 devnull 	unlock(r->l);

 91 f1e8706d 2004-12-27 devnull 	sigdelset(&mask, SIGUSR1);

 92 f1e8706d 2004-12-27 devnull 	sigsuspend(&mask);

 93 f1e8706d 2004-12-27 devnull 

 94 f1e8706d 2004-12-27 devnull 	/*

 95 f1e8706d 2004-12-27 devnull 	 * We're awake.  Make USR1 not interrupt system calls.

 96 f1e8706d 2004-12-27 devnull 	 */

 97 f1e8706d 2004-12-27 devnull 	lock(r->l);

 98 955a2ca7 2004-12-27 devnull 	ignusr1(1);

 99 955a2ca7 2004-12-27 devnull 	if(r->asleep && r->pid == getpid()){

100 955a2ca7 2004-12-27 devnull 		/* Didn't really wake up - signal from something else */

101 955a2ca7 2004-12-27 devnull 		goto again;

102 955a2ca7 2004-12-27 devnull 	}

103 f1e8706d 2004-12-27 devnull }

104 f1e8706d 2004-12-27 devnull 

105 f1e8706d 2004-12-27 devnull void

106 f1e8706d 2004-12-27 devnull _procwakeup(_Procrendez *r)

107 f1e8706d 2004-12-27 devnull {

108 f1e8706d 2004-12-27 devnull 	if(r->asleep){

109 f1e8706d 2004-12-27 devnull 		r->asleep = 0;

110 f1e8706d 2004-12-27 devnull 		assert(r->pid >= 1);

111 f1e8706d 2004-12-27 devnull 		kill(r->pid, SIGUSR1);

112 f1e8706d 2004-12-27 devnull 	}

113 f1e8706d 2004-12-27 devnull }

114 f1e8706d 2004-12-27 devnull 

115 f1e8706d 2004-12-27 devnull /*

116 f1e8706d 2004-12-27 devnull  * process creation and exit

117 f1e8706d 2004-12-27 devnull  */

118 f1e8706d 2004-12-27 devnull typedef struct Stackfree Stackfree;

119 f1e8706d 2004-12-27 devnull struct Stackfree

120 f1e8706d 2004-12-27 devnull {

121 f1e8706d 2004-12-27 devnull 	Stackfree	*next;

122 f1e8706d 2004-12-27 devnull 	int	pid;

123 f1e8706d 2004-12-27 devnull };

124 f1e8706d 2004-12-27 devnull static Lock stacklock;

125 f1e8706d 2004-12-27 devnull static Stackfree *stackfree;

126 f1e8706d 2004-12-27 devnull 

127 f1e8706d 2004-12-27 devnull static void

128 f1e8706d 2004-12-27 devnull delayfreestack(uchar *stk)

129 f1e8706d 2004-12-27 devnull {

130 f1e8706d 2004-12-27 devnull 	Stackfree *sf;

131 f1e8706d 2004-12-27 devnull 

132 f1e8706d 2004-12-27 devnull 	sf = (Stackfree*)stk;

133 f1e8706d 2004-12-27 devnull 	sf->pid = getpid();

134 f1e8706d 2004-12-27 devnull 	lock(&stacklock);

135 f1e8706d 2004-12-27 devnull 	sf->next = stackfree;

136 f1e8706d 2004-12-27 devnull 	stackfree = sf;

137 f1e8706d 2004-12-27 devnull 	unlock(&stacklock);

138 f1e8706d 2004-12-27 devnull }

139 f1e8706d 2004-12-27 devnull 

140 f1e8706d 2004-12-27 devnull static void

141 f1e8706d 2004-12-27 devnull dofreestacks(void)

142 f1e8706d 2004-12-27 devnull {

143 f1e8706d 2004-12-27 devnull 	Stackfree *sf, *last, *next;

144 f1e8706d 2004-12-27 devnull 

145 f1e8706d 2004-12-27 devnull 	if(stackfree==nil || !canlock(&stacklock))

146 f1e8706d 2004-12-27 devnull 		return;

147 f1e8706d 2004-12-27 devnull 

148 f1e8706d 2004-12-27 devnull 	for(last=nil,sf=stackfree; sf; last=sf,sf=next){

149 f1e8706d 2004-12-27 devnull 		next = sf->next;

150 f1e8706d 2004-12-27 devnull 		if(sf->pid >= 1 && kill(sf->pid, 0) < 0 && errno == ESRCH){

151 f1e8706d 2004-12-27 devnull 			free(sf);

152 2c87dda8 2004-12-28 devnull 			if(last)

153 2c87dda8 2004-12-28 devnull 				last->next = next;

154 2c87dda8 2004-12-28 devnull 			else

155 2c87dda8 2004-12-28 devnull 				stackfree = next;

156 f1e8706d 2004-12-27 devnull 			sf = last;

157 f1e8706d 2004-12-27 devnull 		}

158 f1e8706d 2004-12-27 devnull 	}

159 2c87dda8 2004-12-28 devnull 	unlock(&stacklock);

160 2c87dda8 2004-12-28 devnull }

161 f1e8706d 2004-12-27 devnull 

162 f1e8706d 2004-12-27 devnull static int

163 f1e8706d 2004-12-27 devnull startprocfn(void *v)

164 f1e8706d 2004-12-27 devnull {

165 f1e8706d 2004-12-27 devnull 	void **a;

166 f1e8706d 2004-12-27 devnull 	uchar *stk;

167 f1e8706d 2004-12-27 devnull 	void (*fn)(void*);

168 f1e8706d 2004-12-27 devnull 	Proc *p;

169 f1e8706d 2004-12-27 devnull 

170 f1e8706d 2004-12-27 devnull 	a = (void**)v;

171 f1e8706d 2004-12-27 devnull 	fn = a[0];

172 f1e8706d 2004-12-27 devnull 	p = a[1];

173 f1e8706d 2004-12-27 devnull 	stk = a[2];

174 f1e8706d 2004-12-27 devnull 	free(a);

175 f1e8706d 2004-12-27 devnull 	p->osprocid = getpid();

176 f1e8706d 2004-12-27 devnull 

177 f1e8706d 2004-12-27 devnull 	(*fn)(p);

178 f1e8706d 2004-12-27 devnull 

179 f1e8706d 2004-12-27 devnull 	delayfreestack(stk);

180 f1e8706d 2004-12-27 devnull 	_exit(0);

181 f1e8706d 2004-12-27 devnull 	return 0;

182 f1e8706d 2004-12-27 devnull }

183 f1e8706d 2004-12-27 devnull 

184 f1e8706d 2004-12-27 devnull /*

185 f1e8706d 2004-12-27 devnull  * indirect through here so that parent need not wait for child zombie

186 f1e8706d 2004-12-27 devnull  * 

187 f1e8706d 2004-12-27 devnull  * slight race - if child exits and then another process starts before we 

188 f1e8706d 2004-12-27 devnull  * manage to exit, we'll be running on a freed stack.

189 f1e8706d 2004-12-27 devnull  */

190 f1e8706d 2004-12-27 devnull static int

191 f1e8706d 2004-12-27 devnull trampnowait(void *v)

192 f1e8706d 2004-12-27 devnull {

193 f1e8706d 2004-12-27 devnull 	void **a;

194 f1e8706d 2004-12-27 devnull 

195 f1e8706d 2004-12-27 devnull 	a = (void*)v;

196 f1e8706d 2004-12-27 devnull 	*(int*)a[3] = clone(startprocfn, a[2]+65536-512, CLONE_VM|CLONE_FILES, a);

197 f1e8706d 2004-12-27 devnull 	_exit(0);

198 f1e8706d 2004-12-27 devnull 	return 0;

199 f1e8706d 2004-12-27 devnull }

200 f1e8706d 2004-12-27 devnull 

201 f1e8706d 2004-12-27 devnull void

202 f1e8706d 2004-12-27 devnull _procstart(Proc *p, void (*fn)(Proc*))

203 f1e8706d 2004-12-27 devnull {

204 f1e8706d 2004-12-27 devnull 	void **a;

205 f1e8706d 2004-12-27 devnull 	uchar *stk;

206 f1e8706d 2004-12-27 devnull 	int pid, kidpid, status;

207 f1e8706d 2004-12-27 devnull 

208 f1e8706d 2004-12-27 devnull 	dofreestacks();

209 f1e8706d 2004-12-27 devnull 	a = malloc(4*sizeof a[0]);

210 f1e8706d 2004-12-27 devnull 	if(a == nil)

211 f1e8706d 2004-12-27 devnull 		sysfatal("_procstart malloc: %r");

212 f1e8706d 2004-12-27 devnull 	stk = malloc(65536);

213 f1e8706d 2004-12-27 devnull 	if(stk == nil)

214 f1e8706d 2004-12-27 devnull 		sysfatal("_procstart malloc stack: %r");

215 f1e8706d 2004-12-27 devnull 

216 f1e8706d 2004-12-27 devnull 	a[0] = fn;

217 f1e8706d 2004-12-27 devnull 	a[1] = p;

218 f1e8706d 2004-12-27 devnull 	a[2] = stk;

219 f1e8706d 2004-12-27 devnull 	a[3] = &kidpid;

220 f1e8706d 2004-12-27 devnull 	kidpid = -1;

221 f1e8706d 2004-12-27 devnull 

222 f1e8706d 2004-12-27 devnull 	pid = clone(trampnowait, stk+65536-16, CLONE_VM|CLONE_FILES, a);

223 f1e8706d 2004-12-27 devnull 	if(pid > 0)

224 f1e8706d 2004-12-27 devnull 		if(wait4(pid, &status, __WALL, 0) < 0)

225 f1e8706d 2004-12-27 devnull 			fprint(2, "ffork wait4: %r\n");

226 f1e8706d 2004-12-27 devnull 	if(pid < 0 || kidpid < 0){

227 f1e8706d 2004-12-27 devnull 		fprint(2, "_procstart clone: %r\n");

228 f1e8706d 2004-12-27 devnull 		abort();

229 f1e8706d 2004-12-27 devnull 	}

230 f1e8706d 2004-12-27 devnull }

231 f1e8706d 2004-12-27 devnull 

232 f1e8706d 2004-12-27 devnull static char *threadexitsmsg;

233 f1e8706d 2004-12-27 devnull void

234 f1e8706d 2004-12-27 devnull sigusr2handler(int s)

235 f1e8706d 2004-12-27 devnull {

236 2c87dda8 2004-12-28 devnull /*	fprint(2, "%d usr2 %d\n", time(0), getpid()); */

237 f1e8706d 2004-12-27 devnull 	if(threadexitsmsg)

238 f1e8706d 2004-12-27 devnull 		_exits(threadexitsmsg);

239 f1e8706d 2004-12-27 devnull }

240 f1e8706d 2004-12-27 devnull 

241 f1e8706d 2004-12-27 devnull void

242 f1e8706d 2004-12-27 devnull threadexitsall(char *msg)

243 f1e8706d 2004-12-27 devnull {

244 f1e8706d 2004-12-27 devnull 	static int pid[1024];

245 f1e8706d 2004-12-27 devnull 	int i, npid, mypid;

246 f1e8706d 2004-12-27 devnull 	Proc *p;

247 f1e8706d 2004-12-27 devnull 

248 f1e8706d 2004-12-27 devnull 	if(msg == nil)

249 f1e8706d 2004-12-27 devnull 		msg = "";

250 f1e8706d 2004-12-27 devnull 	mypid = getpid();

251 f1e8706d 2004-12-27 devnull 	lock(&_threadprocslock);

252 f1e8706d 2004-12-27 devnull 	threadexitsmsg = msg;

253 f1e8706d 2004-12-27 devnull 	npid = 0;

254 f1e8706d 2004-12-27 devnull 	for(p=_threadprocs; p; p=p->next)

255 f1e8706d 2004-12-27 devnull 		if(p->osprocid != mypid && p->osprocid >= 1)

256 f1e8706d 2004-12-27 devnull 			pid[npid++] = p->osprocid;

257 f1e8706d 2004-12-27 devnull 	for(i=0; i<npid; i++)

258 f1e8706d 2004-12-27 devnull 		kill(pid[i], SIGUSR2);

259 f1e8706d 2004-12-27 devnull 	unlock(&_threadprocslock);

260 f1e8706d 2004-12-27 devnull 	exits(msg);

261 f1e8706d 2004-12-27 devnull }

262 f1e8706d 2004-12-27 devnull 

263 f1e8706d 2004-12-27 devnull /*

264 f1e8706d 2004-12-27 devnull  * per-process data, indexed by pid

265 f1e8706d 2004-12-27 devnull  *

266 f1e8706d 2004-12-27 devnull  * could use modify_ldt and a segment register

267 f1e8706d 2004-12-27 devnull  * to avoid the many calls to getpid(), but i don't

268 f1e8706d 2004-12-27 devnull  * care -- this is compatibility code.  linux 2.6 with

269 f1e8706d 2004-12-27 devnull  * nptl is a good enough pthreads to avoid this whole file.

270 f1e8706d 2004-12-27 devnull  */

271 f1e8706d 2004-12-27 devnull typedef struct Perproc Perproc;

272 f1e8706d 2004-12-27 devnull struct Perproc

273 f1e8706d 2004-12-27 devnull {

274 f1e8706d 2004-12-27 devnull 	int		pid;

275 f1e8706d 2004-12-27 devnull 	Proc	*proc;

276 f1e8706d 2004-12-27 devnull };

277 f1e8706d 2004-12-27 devnull 

278 f1e8706d 2004-12-27 devnull static Lock perlock;

279 f1e8706d 2004-12-27 devnull static Perproc perproc[1024];

280 f1e8706d 2004-12-27 devnull #define P ((Proc*)-1)

281 f1e8706d 2004-12-27 devnull 

282 f1e8706d 2004-12-27 devnull static Perproc*

283 f1e8706d 2004-12-27 devnull myperproc(void)

284 f1e8706d 2004-12-27 devnull {

285 f1e8706d 2004-12-27 devnull 	int i, pid, h;

286 f1e8706d 2004-12-27 devnull 	Perproc *p;

287 f1e8706d 2004-12-27 devnull 

288 f1e8706d 2004-12-27 devnull 	pid = getpid();

289 f1e8706d 2004-12-27 devnull 	h = pid%nelem(perproc);

290 f1e8706d 2004-12-27 devnull 	for(i=0; i<nelem(perproc); i++){

291 f1e8706d 2004-12-27 devnull 		p = &perproc[(i+h)%nelem(perproc)];

292 f1e8706d 2004-12-27 devnull 		if(p->pid == pid)

293 f1e8706d 2004-12-27 devnull 			return p;

294 f1e8706d 2004-12-27 devnull 		if(p->pid == 0){

295 f1e8706d 2004-12-27 devnull 			print("found 0 at %d (h=%d)\n", (i+h)%nelem(perproc), h);

296 f1e8706d 2004-12-27 devnull 			break;

297 f1e8706d 2004-12-27 devnull 		}

298 f1e8706d 2004-12-27 devnull 	}

299 f1e8706d 2004-12-27 devnull 	fprint(2, "myperproc %d: cannot find self\n", pid);

300 f1e8706d 2004-12-27 devnull 	abort();

301 f1e8706d 2004-12-27 devnull 	return nil;

302 f1e8706d 2004-12-27 devnull }

303 f1e8706d 2004-12-27 devnull 

304 f1e8706d 2004-12-27 devnull static Perproc*

305 f1e8706d 2004-12-27 devnull newperproc(void)

306 f1e8706d 2004-12-27 devnull {

307 f1e8706d 2004-12-27 devnull 	int i, pid, h;

308 f1e8706d 2004-12-27 devnull 	Perproc *p;

309 f1e8706d 2004-12-27 devnull 

310 f1e8706d 2004-12-27 devnull 	lock(&perlock);

311 f1e8706d 2004-12-27 devnull 	pid = getpid();

312 f1e8706d 2004-12-27 devnull 	h = pid%nelem(perproc);

313 f1e8706d 2004-12-27 devnull 	for(i=0; i<nelem(perproc); i++){

314 f1e8706d 2004-12-27 devnull 		p = &perproc[(i+h)%nelem(perproc)];

315 f1e8706d 2004-12-27 devnull 		if(p->pid == pid || p->pid == -1 || p->pid == 0){

316 f1e8706d 2004-12-27 devnull 			p->pid = pid;

317 f1e8706d 2004-12-27 devnull 			unlock(&perlock);

318 f1e8706d 2004-12-27 devnull 			return p;

319 f1e8706d 2004-12-27 devnull 		}

320 f1e8706d 2004-12-27 devnull 	}

321 f1e8706d 2004-12-27 devnull 	fprint(2, "newperproc %d: out of procs\n", pid);

322 f1e8706d 2004-12-27 devnull 	abort();

323 f1e8706d 2004-12-27 devnull 	return nil;

324 f1e8706d 2004-12-27 devnull }

325 f1e8706d 2004-12-27 devnull 

326 f1e8706d 2004-12-27 devnull Proc*

327 f1e8706d 2004-12-27 devnull _threadproc(void)

328 f1e8706d 2004-12-27 devnull {

329 f1e8706d 2004-12-27 devnull 	return myperproc()->proc;

330 f1e8706d 2004-12-27 devnull }

331 f1e8706d 2004-12-27 devnull 

332 f1e8706d 2004-12-27 devnull void

333 f1e8706d 2004-12-27 devnull _threadsetproc(Proc *p)

334 f1e8706d 2004-12-27 devnull {

335 f1e8706d 2004-12-27 devnull 	Perproc *pp;

336 f1e8706d 2004-12-27 devnull 

337 2c87dda8 2004-12-28 devnull 	if(p)

338 2c87dda8 2004-12-28 devnull 		p->osprocid = getpid();

339 f1e8706d 2004-12-27 devnull 	pp = newperproc();

340 f1e8706d 2004-12-27 devnull 	pp->proc = p;

341 f1e8706d 2004-12-27 devnull 	if(p == nil)

342 f1e8706d 2004-12-27 devnull 		pp->pid = -1;

343 f1e8706d 2004-12-27 devnull }

344 f1e8706d 2004-12-27 devnull 

345 f1e8706d 2004-12-27 devnull void

346 f1e8706d 2004-12-27 devnull _pthreadinit(void)

347 f1e8706d 2004-12-27 devnull {

348 f1e8706d 2004-12-27 devnull 	signal(SIGUSR2, sigusr2handler);

349 f1e8706d 2004-12-27 devnull }

350 f1e8706d 2004-12-27 devnull 

351 1d2533d0 2004-12-28 devnull void

352 1d2533d0 2004-12-28 devnull _threadpexit(void)

353 1d2533d0 2004-12-28 devnull {

354 1d2533d0 2004-12-28 devnull 	_exit(0);

355 1d2533d0 2004-12-28 devnull }