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Fighting the good fight. Move libfmt, libutf into subdirectories of lib9. Add poll-based socket i/o to libthread, so that we can avoid using multiple procs when possible, thus removing dependence on crappy pthreads implementations. Convert samterm, acme to the single-proc libthread. Bring libcomplete, acme up-to-date w.r.t. Plan 9 distribution.
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 1 76193d7c 2003-09-30 devnull #include "threadimpl.h"

 2 76193d7c 2003-09-30 devnull 

 3 76193d7c 2003-09-30 devnull /* this will need work */

 4 76193d7c 2003-09-30 devnull enum

 5 76193d7c 2003-09-30 devnull {

 6 76193d7c 2003-09-30 devnull 	PTABHASH = 257,

 7 76193d7c 2003-09-30 devnull };

 8 76193d7c 2003-09-30 devnull 

 9 5a8e63b2 2004-02-29 devnull static int multi;

10 5a8e63b2 2004-02-29 devnull static Proc *theproc;

11 5a8e63b2 2004-02-29 devnull 

12 5a8e63b2 2004-02-29 devnull void

13 5a8e63b2 2004-02-29 devnull _threadmultiproc(void)

14 5a8e63b2 2004-02-29 devnull {

15 5a8e63b2 2004-02-29 devnull 	if(multi == 0){

16 5a8e63b2 2004-02-29 devnull 		multi = 1;

17 5a8e63b2 2004-02-29 devnull 		_threadsetproc(theproc);

18 5a8e63b2 2004-02-29 devnull 	}

19 5a8e63b2 2004-02-29 devnull }

20 5a8e63b2 2004-02-29 devnull 

21 76193d7c 2003-09-30 devnull static Lock ptablock;

22 76193d7c 2003-09-30 devnull Proc *ptab[PTABHASH];

23 76193d7c 2003-09-30 devnull 

24 76193d7c 2003-09-30 devnull void

25 76193d7c 2003-09-30 devnull _threadsetproc(Proc *p)

26 76193d7c 2003-09-30 devnull {

27 76193d7c 2003-09-30 devnull 	int h;

28 76193d7c 2003-09-30 devnull 

29 5a8e63b2 2004-02-29 devnull 	if(!multi){

30 5a8e63b2 2004-02-29 devnull 		theproc = p;

31 5a8e63b2 2004-02-29 devnull 		return;

32 5a8e63b2 2004-02-29 devnull 	}

33 76193d7c 2003-09-30 devnull 	lock(&ptablock);

34 76193d7c 2003-09-30 devnull 	h = ((unsigned)p->pid)%PTABHASH;

35 76193d7c 2003-09-30 devnull 	p->link = ptab[h];

36 76193d7c 2003-09-30 devnull 	unlock(&ptablock);

37 76193d7c 2003-09-30 devnull 	ptab[h] = p;

38 76193d7c 2003-09-30 devnull }

39 76193d7c 2003-09-30 devnull 

40 76193d7c 2003-09-30 devnull static Proc*

41 76193d7c 2003-09-30 devnull __threadgetproc(int rm)

42 76193d7c 2003-09-30 devnull {

43 76193d7c 2003-09-30 devnull 	Proc **l, *p;

44 76193d7c 2003-09-30 devnull 	int h, pid;

45 76193d7c 2003-09-30 devnull 

46 5a8e63b2 2004-02-29 devnull 	if(!multi)

47 5a8e63b2 2004-02-29 devnull 		return theproc;

48 5a8e63b2 2004-02-29 devnull 

49 76193d7c 2003-09-30 devnull 	pid = _threadgetpid();

50 76193d7c 2003-09-30 devnull 

51 76193d7c 2003-09-30 devnull 	lock(&ptablock);

52 76193d7c 2003-09-30 devnull 	h = ((unsigned)pid)%PTABHASH;

53 76193d7c 2003-09-30 devnull 	for(l=&ptab[h]; p=*l; l=&p->link){

54 76193d7c 2003-09-30 devnull 		if(p->pid == pid){

55 76193d7c 2003-09-30 devnull 			if(rm)

56 76193d7c 2003-09-30 devnull 				*l = p->link;

57 76193d7c 2003-09-30 devnull 			unlock(&ptablock);

58 76193d7c 2003-09-30 devnull 			return p;

59 76193d7c 2003-09-30 devnull 		}

60 76193d7c 2003-09-30 devnull 	}

61 76193d7c 2003-09-30 devnull 	unlock(&ptablock);

62 76193d7c 2003-09-30 devnull 	return nil;

63 76193d7c 2003-09-30 devnull }

64 76193d7c 2003-09-30 devnull 

65 76193d7c 2003-09-30 devnull Proc*

66 76193d7c 2003-09-30 devnull _threadgetproc(void)

67 76193d7c 2003-09-30 devnull {

68 76193d7c 2003-09-30 devnull 	return __threadgetproc(0);

69 76193d7c 2003-09-30 devnull }

70 76193d7c 2003-09-30 devnull 

71 76193d7c 2003-09-30 devnull Proc*

72 76193d7c 2003-09-30 devnull _threaddelproc(void)

73 76193d7c 2003-09-30 devnull {

74 76193d7c 2003-09-30 devnull 	return __threadgetproc(1);

75 76193d7c 2003-09-30 devnull }