1 76193d7c 2003-09-30 devnull #include <signal.h>
  2 cd7ddc9b 2003-11-23 devnull #include "threadimpl.h"
  3 76193d7c 2003-09-30 devnull 
  4 76193d7c 2003-09-30 devnull typedef struct Mainarg Mainarg;
  5 76193d7c 2003-09-30 devnull struct Mainarg
  6 76193d7c 2003-09-30 devnull {
  7 76193d7c 2003-09-30 devnull 	int	argc;
  8 76193d7c 2003-09-30 devnull 	char	**argv;
  9 76193d7c 2003-09-30 devnull };
 10 76193d7c 2003-09-30 devnull 
 11 76193d7c 2003-09-30 devnull int	mainstacksize;
 12 76193d7c 2003-09-30 devnull int	_threadnotefd;
 13 76193d7c 2003-09-30 devnull int	_threadpasserpid;
 14 76193d7c 2003-09-30 devnull static void mainlauncher(void*);
 15 76193d7c 2003-09-30 devnull extern void (*_sysfatal)(char*, va_list);
 16 76193d7c 2003-09-30 devnull 
 17 76193d7c 2003-09-30 devnull void
 18 02a1a5c1 2004-03-05 devnull _threadstatus(int x)
 19 02a1a5c1 2004-03-05 devnull {
 20 02a1a5c1 2004-03-05 devnull 	USED(x);
 21 02a1a5c1 2004-03-05 devnull 	threadstatus();
 22 02a1a5c1 2004-03-05 devnull }
 23 02a1a5c1 2004-03-05 devnull 
 24 02a1a5c1 2004-03-05 devnull void
 25 76193d7c 2003-09-30 devnull _threaddie(int x)
 26 76193d7c 2003-09-30 devnull {
 27 76193d7c 2003-09-30 devnull 	extern char *_threadexitsallstatus;
 28 76193d7c 2003-09-30 devnull 	USED(x);
 29 76193d7c 2003-09-30 devnull 
 30 76193d7c 2003-09-30 devnull 	if(_threadexitsallstatus)
 31 76193d7c 2003-09-30 devnull 		exit(_threadexitsallstatus[0] ? 1 : 0);
 32 76193d7c 2003-09-30 devnull }
 33 76193d7c 2003-09-30 devnull 
 34 5a8e63b2 2004-02-29 devnull static void
 35 5a8e63b2 2004-02-29 devnull _nop(int x)
 36 5a8e63b2 2004-02-29 devnull {
 37 5a8e63b2 2004-02-29 devnull 	USED(x);
 38 5a8e63b2 2004-02-29 devnull }
 39 5a8e63b2 2004-02-29 devnull 
 40 76193d7c 2003-09-30 devnull int
 41 76193d7c 2003-09-30 devnull main(int argc, char **argv)
 42 76193d7c 2003-09-30 devnull {
 43 76193d7c 2003-09-30 devnull 	Mainarg *a;
 44 76193d7c 2003-09-30 devnull 	Proc *p;
 45 76193d7c 2003-09-30 devnull 
 46 76193d7c 2003-09-30 devnull 	signal(SIGTERM, _threaddie);
 47 5a8e63b2 2004-02-29 devnull 	signal(SIGCHLD, _nop);
 48 15680d56 2004-03-05 devnull //	signal(SIGINFO, _threadstatus);
 49 76193d7c 2003-09-30 devnull //	rfork(RFREND);
 50 76193d7c 2003-09-30 devnull 
 51 76193d7c 2003-09-30 devnull //_threaddebuglevel = (DBGSCHED|DBGCHAN|DBGREND)^~0;
 52 76193d7c 2003-09-30 devnull 	_systhreadinit();
 53 76193d7c 2003-09-30 devnull 	_qlockinit(_threadrendezvous);
 54 76193d7c 2003-09-30 devnull 	_sysfatal = _threadsysfatal;
 55 32f69c36 2003-12-11 devnull 	notify(_threadnote);
 56 76193d7c 2003-09-30 devnull 	if(mainstacksize == 0)
 57 76193d7c 2003-09-30 devnull 		mainstacksize = 32*1024;
 58 76193d7c 2003-09-30 devnull 
 59 76193d7c 2003-09-30 devnull 	a = _threadmalloc(sizeof *a, 1);
 60 76193d7c 2003-09-30 devnull 	a->argc = argc;
 61 76193d7c 2003-09-30 devnull 	a->argv = argv;
 62 76193d7c 2003-09-30 devnull 
 63 76193d7c 2003-09-30 devnull 	p = _newproc(mainlauncher, a, mainstacksize, "threadmain", 0, 0);
 64 76193d7c 2003-09-30 devnull 	_schedinit(p);
 65 76193d7c 2003-09-30 devnull 	abort();	/* not reached */
 66 76193d7c 2003-09-30 devnull 	return 0;
 67 76193d7c 2003-09-30 devnull }
 68 76193d7c 2003-09-30 devnull 
 69 76193d7c 2003-09-30 devnull static void
 70 76193d7c 2003-09-30 devnull mainlauncher(void *arg)
 71 76193d7c 2003-09-30 devnull {
 72 76193d7c 2003-09-30 devnull 	Mainarg *a;
 73 76193d7c 2003-09-30 devnull 
 74 76193d7c 2003-09-30 devnull 	a = arg;
 75 76193d7c 2003-09-30 devnull 	threadmain(a->argc, a->argv);
 76 76193d7c 2003-09-30 devnull 	threadexits("threadmain");
 77 76193d7c 2003-09-30 devnull }
 78 76193d7c 2003-09-30 devnull 
 79 76193d7c 2003-09-30 devnull void
 80 76193d7c 2003-09-30 devnull _threadsignal(void)
 81 76193d7c 2003-09-30 devnull {
 82 76193d7c 2003-09-30 devnull }
 83 76193d7c 2003-09-30 devnull 
 84 76193d7c 2003-09-30 devnull void
 85 76193d7c 2003-09-30 devnull _threadsignalpasser(void)
 86 76193d7c 2003-09-30 devnull {
 87 76193d7c 2003-09-30 devnull }
 88 76193d7c 2003-09-30 devnull 
 89 76193d7c 2003-09-30 devnull int
 90 76193d7c 2003-09-30 devnull _schedfork(Proc *p)
 91 76193d7c 2003-09-30 devnull {
 92 cd7ddc9b 2003-11-23 devnull 	int pid;
 93 cd7ddc9b 2003-11-23 devnull 	lock(&p->lock);
 94 cd7ddc9b 2003-11-23 devnull 	pid = ffork(RFMEM|RFNOWAIT, _schedinit, p);
 95 cd7ddc9b 2003-11-23 devnull 	p->pid = pid;
 96 cd7ddc9b 2003-11-23 devnull 	unlock(&p->lock);
 97 cd7ddc9b 2003-11-23 devnull 	return pid;
 98 cd7ddc9b 2003-11-23 devnull 	
 99 76193d7c 2003-09-30 devnull }
100 76193d7c 2003-09-30 devnull 
101 76193d7c 2003-09-30 devnull void
102 76193d7c 2003-09-30 devnull _schedexit(Proc *p)
103 76193d7c 2003-09-30 devnull {
104 76193d7c 2003-09-30 devnull 	char ex[ERRMAX];
105 76193d7c 2003-09-30 devnull 	Proc **l;
106 76193d7c 2003-09-30 devnull 
107 76193d7c 2003-09-30 devnull 	lock(&_threadpq.lock);
108 76193d7c 2003-09-30 devnull 	for(l=&_threadpq.head; *l; l=&(*l)->next){
109 76193d7c 2003-09-30 devnull 		if(*l == p){
110 76193d7c 2003-09-30 devnull 			*l = p->next;
111 76193d7c 2003-09-30 devnull 			if(*l == nil)
112 76193d7c 2003-09-30 devnull 				_threadpq.tail = l;
113 76193d7c 2003-09-30 devnull 			break;
114 76193d7c 2003-09-30 devnull 		}
115 76193d7c 2003-09-30 devnull 	}
116 32f69c36 2003-12-11 devnull 	_threadprocs--;
117 76193d7c 2003-09-30 devnull 	unlock(&_threadpq.lock);
118 76193d7c 2003-09-30 devnull 
119 76193d7c 2003-09-30 devnull 	strncpy(ex, p->exitstr, sizeof ex);
120 76193d7c 2003-09-30 devnull 	ex[sizeof ex-1] = '\0';
121 76193d7c 2003-09-30 devnull 	free(p);
122 76193d7c 2003-09-30 devnull 	_exit(ex[0]);
123 76193d7c 2003-09-30 devnull }
124 76193d7c 2003-09-30 devnull 
125 76193d7c 2003-09-30 devnull int
126 76193d7c 2003-09-30 devnull nrand(int n)
127 76193d7c 2003-09-30 devnull {
128 76193d7c 2003-09-30 devnull 	return random()%n;
129 76193d7c 2003-09-30 devnull }
130 76193d7c 2003-09-30 devnull 
131 76193d7c 2003-09-30 devnull void
132 76193d7c 2003-09-30 devnull _systhreadinit(void)
133 76193d7c 2003-09-30 devnull {
134 76193d7c 2003-09-30 devnull }
135 76193d7c 2003-09-30 devnull 
136 76193d7c 2003-09-30 devnull void
137 76193d7c 2003-09-30 devnull threadstats(void)
138 76193d7c 2003-09-30 devnull {
139 76193d7c 2003-09-30 devnull 	extern int _threadnrendez, _threadhighnrendez,
140 76193d7c 2003-09-30 devnull 		_threadnalt, _threadhighnentry;
141 76193d7c 2003-09-30 devnull 	fprint(2, "*** THREAD LIBRARY STATS ***\n");
142 76193d7c 2003-09-30 devnull 	fprint(2, "nrendez %d high simultaneous %d\n", 
143 76193d7c 2003-09-30 devnull 		_threadnrendez, _threadhighnrendez);
144 76193d7c 2003-09-30 devnull 	fprint(2, "nalt %d high simultaneous entry %d\n",
145 76193d7c 2003-09-30 devnull 		_threadnalt, _threadhighnentry);
146 76193d7c 2003-09-30 devnull }