1 76193d7c 2003-09-30 devnull #include "threadimpl.h"
3 76193d7c 2003-09-30 devnull int _threadnopasser;
5 76193d7c 2003-09-30 devnull #ifdef NOTDEF
6 76193d7c 2003-09-30 devnull #define NFN 33
7 76193d7c 2003-09-30 devnull #define ERRLEN 48
8 76193d7c 2003-09-30 devnull typedef struct Note Note;
9 76193d7c 2003-09-30 devnull struct Note
11 76193d7c 2003-09-30 devnull Lock inuse;
12 76193d7c 2003-09-30 devnull Proc *proc; /* recipient */
13 76193d7c 2003-09-30 devnull char s[ERRMAX]; /* arg2 */
16 76193d7c 2003-09-30 devnull static Note notes[128];
17 76193d7c 2003-09-30 devnull static Note *enotes = notes+nelem(notes);
18 76193d7c 2003-09-30 devnull static int (*onnote[NFN])(void*, char*);
19 76193d7c 2003-09-30 devnull static int onnotepid[NFN];
20 76193d7c 2003-09-30 devnull static Lock onnotelock;
23 76193d7c 2003-09-30 devnull threadnotify(int (*f)(void*, char*), int in)
25 76193d7c 2003-09-30 devnull int i, topid;
26 76193d7c 2003-09-30 devnull int (*from)(void*, char*), (*to)(void*, char*);
29 76193d7c 2003-09-30 devnull from = nil;
31 76193d7c 2003-09-30 devnull topid = _threadgetproc()->pid;
33 76193d7c 2003-09-30 devnull from = f;
34 76193d7c 2003-09-30 devnull to = nil;
35 76193d7c 2003-09-30 devnull topid = 0;
37 76193d7c 2003-09-30 devnull lock(&onnotelock);
38 76193d7c 2003-09-30 devnull for(i=0; i<NFN; i++)
39 76193d7c 2003-09-30 devnull if(onnote[i]==from){
40 76193d7c 2003-09-30 devnull onnote[i] = to;
41 76193d7c 2003-09-30 devnull onnotepid[i] = topid;
44 76193d7c 2003-09-30 devnull unlock(&onnotelock);
45 76193d7c 2003-09-30 devnull return i<NFN;
48 76193d7c 2003-09-30 devnull static void
49 76193d7c 2003-09-30 devnull delayednotes(Proc *p, void *v)
53 76193d7c 2003-09-30 devnull int (*fn)(void*, char*);
55 76193d7c 2003-09-30 devnull if(!p->pending)
58 76193d7c 2003-09-30 devnull p->pending = 0;
59 76193d7c 2003-09-30 devnull for(n=notes; n<enotes; n++){
60 76193d7c 2003-09-30 devnull if(n->proc == p){
61 76193d7c 2003-09-30 devnull for(i=0; i<NFN; i++){
62 76193d7c 2003-09-30 devnull if(onnotepid[i]!=p->pid || (fn = onnote[i])==nil)
63 76193d7c 2003-09-30 devnull continue;
64 76193d7c 2003-09-30 devnull if((*fn)(v, n->s))
67 76193d7c 2003-09-30 devnull if(i==NFN){
68 76193d7c 2003-09-30 devnull _threaddebug(DBGNOTE, "Unhandled note %s, proc %p\n", n->s, p);
69 76193d7c 2003-09-30 devnull if(v != nil)
70 76193d7c 2003-09-30 devnull noted(NDFLT);
71 76193d7c 2003-09-30 devnull else if(strncmp(n->s, "sys:", 4)==0)
73 76193d7c 2003-09-30 devnull threadexitsall(n->s);
75 76193d7c 2003-09-30 devnull n->proc = nil;
76 76193d7c 2003-09-30 devnull unlock(&n->inuse);
82 76193d7c 2003-09-30 devnull _threadnote(void *v, char *s)
87 76193d7c 2003-09-30 devnull _threaddebug(DBGNOTE, "Got note %s", s);
88 76193d7c 2003-09-30 devnull if(strncmp(s, "sys:", 4) == 0)
89 76193d7c 2003-09-30 devnull noted(NDFLT);
91 76193d7c 2003-09-30 devnull // if(_threadexitsallstatus){
92 76193d7c 2003-09-30 devnull // _threaddebug(DBGNOTE, "Threadexitsallstatus = '%s'\n", _threadexitsallstatus);
93 76193d7c 2003-09-30 devnull // _exits(_threadexitsallstatus);
96 76193d7c 2003-09-30 devnull if(strcmp(s, "threadint")==0)
97 76193d7c 2003-09-30 devnull noted(NCONT);
99 76193d7c 2003-09-30 devnull p = _threadgetproc();
100 76193d7c 2003-09-30 devnull if(p == nil)
101 76193d7c 2003-09-30 devnull noted(NDFLT);
103 76193d7c 2003-09-30 devnull for(n=notes; n<enotes; n++)
104 76193d7c 2003-09-30 devnull if(canlock(&n->inuse))
106 76193d7c 2003-09-30 devnull if(n==enotes)
107 76193d7c 2003-09-30 devnull sysfatal("libthread: too many delayed notes");
108 76193d7c 2003-09-30 devnull utfecpy(n->s, n->s+ERRMAX, s);
109 76193d7c 2003-09-30 devnull n->proc = p;
110 76193d7c 2003-09-30 devnull p->pending = 1;
111 76193d7c 2003-09-30 devnull if(!p->splhi)
112 76193d7c 2003-09-30 devnull delayednotes(p, v);
113 76193d7c 2003-09-30 devnull noted(NCONT);
118 76193d7c 2003-09-30 devnull _procsplhi(void)
121 76193d7c 2003-09-30 devnull Proc *p;
123 76193d7c 2003-09-30 devnull p = _threadgetproc();
124 76193d7c 2003-09-30 devnull s = p->splhi;
125 76193d7c 2003-09-30 devnull p->splhi = 1;
126 76193d7c 2003-09-30 devnull return s;
130 76193d7c 2003-09-30 devnull _procsplx(int s)
132 76193d7c 2003-09-30 devnull Proc *p;
134 76193d7c 2003-09-30 devnull p = _threadgetproc();
135 76193d7c 2003-09-30 devnull p->splhi = s;
139 76193d7c 2003-09-30 devnull if(p->pending)
140 76193d7c 2003-09-30 devnull delayednotes(p, nil);