1 76193d7c 2003-09-30 devnull #include "threadimpl.h"
  2 76193d7c 2003-09-30 devnull 
  3 76193d7c 2003-09-30 devnull int
  4 76193d7c 2003-09-30 devnull threadid(void)
  5 76193d7c 2003-09-30 devnull {
  6 76193d7c 2003-09-30 devnull 	return _threadgetproc()->thread->id;
  7 76193d7c 2003-09-30 devnull }
  8 76193d7c 2003-09-30 devnull 
  9 76193d7c 2003-09-30 devnull int
 10 76193d7c 2003-09-30 devnull threadpid(int id)
 11 76193d7c 2003-09-30 devnull {
 12 76193d7c 2003-09-30 devnull 	int pid;
 13 76193d7c 2003-09-30 devnull 	Proc *p;
 14 76193d7c 2003-09-30 devnull 	Thread *t;
 15 76193d7c 2003-09-30 devnull 
 16 76193d7c 2003-09-30 devnull 	if (id < 0)
 17 76193d7c 2003-09-30 devnull 		return -1;
 18 76193d7c 2003-09-30 devnull 	if (id == 0)
 19 76193d7c 2003-09-30 devnull 		return _threadgetproc()->pid;
 20 76193d7c 2003-09-30 devnull 	lock(&_threadpq.lock);
 21 76193d7c 2003-09-30 devnull 	for (p = _threadpq.head; p->next; p = p->next){
 22 76193d7c 2003-09-30 devnull 		lock(&p->lock);
 23 76193d7c 2003-09-30 devnull 		for (t = p->threads.head; t; t = t->nextt)
 24 76193d7c 2003-09-30 devnull 			if (t->id == id){
 25 76193d7c 2003-09-30 devnull 				pid = p->pid;
 26 76193d7c 2003-09-30 devnull 				unlock(&p->lock);
 27 76193d7c 2003-09-30 devnull 				unlock(&_threadpq.lock);
 28 76193d7c 2003-09-30 devnull 				return pid;
 29 76193d7c 2003-09-30 devnull 			}
 30 76193d7c 2003-09-30 devnull 		unlock(&p->lock);
 31 76193d7c 2003-09-30 devnull 	}
 32 76193d7c 2003-09-30 devnull 	unlock(&_threadpq.lock);
 33 76193d7c 2003-09-30 devnull 	return -1;
 34 76193d7c 2003-09-30 devnull }
 35 76193d7c 2003-09-30 devnull 
 36 76193d7c 2003-09-30 devnull int
 37 76193d7c 2003-09-30 devnull threadsetgrp(int ng)
 38 76193d7c 2003-09-30 devnull {
 39 76193d7c 2003-09-30 devnull 	int og;
 40 76193d7c 2003-09-30 devnull 	Thread *t;
 41 76193d7c 2003-09-30 devnull 
 42 76193d7c 2003-09-30 devnull 	t = _threadgetproc()->thread;
 43 76193d7c 2003-09-30 devnull 	og = t->grp;
 44 76193d7c 2003-09-30 devnull 	t->grp = ng;
 45 76193d7c 2003-09-30 devnull 	return og;
 46 76193d7c 2003-09-30 devnull }
 47 76193d7c 2003-09-30 devnull 
 48 76193d7c 2003-09-30 devnull int
 49 76193d7c 2003-09-30 devnull threadgetgrp(void)
 50 76193d7c 2003-09-30 devnull {
 51 76193d7c 2003-09-30 devnull 	return _threadgetproc()->thread->grp;
 52 76193d7c 2003-09-30 devnull }
 53 76193d7c 2003-09-30 devnull 
 54 76193d7c 2003-09-30 devnull void
 55 76193d7c 2003-09-30 devnull threadsetname(char *name)
 56 76193d7c 2003-09-30 devnull {
 57 76193d7c 2003-09-30 devnull /*
 58 76193d7c 2003-09-30 devnull 	int fd, n;
 59 76193d7c 2003-09-30 devnull 	char buf[128], *s;
 60 76193d7c 2003-09-30 devnull */
 61 76193d7c 2003-09-30 devnull 	Proc *p;
 62 76193d7c 2003-09-30 devnull 	Thread *t;
 63 76193d7c 2003-09-30 devnull 
 64 76193d7c 2003-09-30 devnull 	p = _threadgetproc();
 65 76193d7c 2003-09-30 devnull 	t = p->thread;
 66 76193d7c 2003-09-30 devnull 	if (t->cmdname)
 67 76193d7c 2003-09-30 devnull 		free(t->cmdname);
 68 76193d7c 2003-09-30 devnull 	t->cmdname = strdup(name);
 69 76193d7c 2003-09-30 devnull /* Plan 9 only 
 70 76193d7c 2003-09-30 devnull 	if(p->nthreads == 1){
 71 76193d7c 2003-09-30 devnull 		snprint(buf, sizeof buf, "#p/%d/args", getpid());
 72 76193d7c 2003-09-30 devnull 		if((fd = open(buf, OWRITE)) >= 0){
 73 76193d7c 2003-09-30 devnull 			snprint(buf, sizeof buf, "%s [%s]", argv0, name);
 74 76193d7c 2003-09-30 devnull 			n = strlen(buf)+1;
 75 76193d7c 2003-09-30 devnull 			s = strchr(buf, ' ');
 76 76193d7c 2003-09-30 devnull 			if(s)
 77 76193d7c 2003-09-30 devnull 				*s = '\0';
 78 76193d7c 2003-09-30 devnull 			write(fd, buf, n);
 79 76193d7c 2003-09-30 devnull 			close(fd);
 80 76193d7c 2003-09-30 devnull 		}
 81 76193d7c 2003-09-30 devnull 	}
 82 76193d7c 2003-09-30 devnull */
 83 76193d7c 2003-09-30 devnull }
 84 76193d7c 2003-09-30 devnull 
 85 76193d7c 2003-09-30 devnull char*
 86 76193d7c 2003-09-30 devnull threadgetname(void)
 87 76193d7c 2003-09-30 devnull {
 88 76193d7c 2003-09-30 devnull 	return _threadgetproc()->thread->cmdname;
 89 76193d7c 2003-09-30 devnull }
 90 76193d7c 2003-09-30 devnull 
 91 76193d7c 2003-09-30 devnull void**
 92 76193d7c 2003-09-30 devnull threaddata(void)
 93 76193d7c 2003-09-30 devnull {
 94 76193d7c 2003-09-30 devnull 	return &_threadgetproc()->thread->udata[0];
 95 76193d7c 2003-09-30 devnull }
 96 76193d7c 2003-09-30 devnull 
 97 76193d7c 2003-09-30 devnull void**
 98 76193d7c 2003-09-30 devnull procdata(void)
 99 76193d7c 2003-09-30 devnull {
100 76193d7c 2003-09-30 devnull 	return &_threadgetproc()->udata;
101 76193d7c 2003-09-30 devnull }
102 76193d7c 2003-09-30 devnull 
103 76193d7c 2003-09-30 devnull static Lock privlock;
104 76193d7c 2003-09-30 devnull static int privmask = 1;
105 76193d7c 2003-09-30 devnull 
106 76193d7c 2003-09-30 devnull int
107 76193d7c 2003-09-30 devnull tprivalloc(void)
108 76193d7c 2003-09-30 devnull {
109 76193d7c 2003-09-30 devnull 	int i;
110 76193d7c 2003-09-30 devnull 
111 76193d7c 2003-09-30 devnull 	lock(&privlock);
112 76193d7c 2003-09-30 devnull 	for(i=0; i<NPRIV; i++)
113 76193d7c 2003-09-30 devnull 		if(!(privmask&(1<<i))){
114 76193d7c 2003-09-30 devnull 			privmask |= 1<<i;
115 76193d7c 2003-09-30 devnull 			unlock(&privlock);
116 76193d7c 2003-09-30 devnull 			return i;
117 76193d7c 2003-09-30 devnull 		}
118 76193d7c 2003-09-30 devnull 	unlock(&privlock);
119 76193d7c 2003-09-30 devnull 	return -1;
120 76193d7c 2003-09-30 devnull }
121 76193d7c 2003-09-30 devnull 
122 76193d7c 2003-09-30 devnull void
123 76193d7c 2003-09-30 devnull tprivfree(int i)
124 76193d7c 2003-09-30 devnull {
125 76193d7c 2003-09-30 devnull 	if(i < 0 || i >= NPRIV)
126 76193d7c 2003-09-30 devnull 		abort();
127 76193d7c 2003-09-30 devnull 	lock(&privlock);
128 76193d7c 2003-09-30 devnull 	privmask &= ~(1<<i);
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 tprivaddr(int i)
133 76193d7c 2003-09-30 devnull {
134 76193d7c 2003-09-30 devnull 	return &_threadgetproc()->thread->udata[i];
135 76193d7c 2003-09-30 devnull }