libmixp/thread.c

   1 #include <unistd.h>
   2 #include "mixp_local.h"
   3
   4 static MIXP_THREAD ixp_nothread;
   5 MIXP_THREAD *mixp_thread = &ixp_nothread;
   6
   7 static char*
   8 errbuf() {
   9         static char errbuf[IXP_ERRMAX];
  10
  11         return errbuf;
  12 }
  13
  14 static void
  15 mvoid(MIXP_MUTEX *m) {
  16         USED(m);
  17         return;
  18 }
  19
  20 static int
  21 mtrue(MIXP_MUTEX *m) {
  22         USED(m);
  23         return 1;
  24 }
  25
  26 static int
  27 mfalse(MIXP_MUTEX *m) {
  28         USED(m);
  29         return 0;
  30 }
  31
  32 static void
  33 rwvoid(MIXP_RWLOCK *rw) {
  34         USED(rw);
  35         return;
  36 }
  37
  38 static int
  39 rwtrue(MIXP_RWLOCK *rw) {
  40         USED(rw);
  41         return 1;
  42 }
  43
  44 static int
  45 rwfalse(MIXP_RWLOCK *m) {
  46         USED(m);
  47         return 0;
  48 }
  49
  50 static void
  51 rvoid(MIXP_RENDEZ *r) {
  52         USED(r);
  53         return;
  54 }
  55
  56 static int
  57 rfalse(MIXP_RENDEZ *r) {
  58         USED(r);
  59         return 0;
  60 }
  61
  62 static void
  63 rsleep(MIXP_RENDEZ *r) {
  64         USED(r);
  65         ixp_eprint("rsleep called when not implemented\n");
  66 }
  67
  68 static MIXP_THREAD ixp_nothread = {
  69         /* RWLock */
  70         .initrwlock = rwfalse,
  71         .rlock = rwvoid,
  72         .runlock = rwvoid,
  73         .canrlock = rwtrue,
  74         .wlock = rwvoid,
  75         .wunlock = rwvoid,
  76         .canwlock = rwtrue,
  77         .rwdestroy = rwvoid,
  78         /* Mutex */
  79         .initmutex = mfalse,
  80         .lock = mvoid,
  81         .unlock = mvoid,
  82         .canlock = mtrue,
  83         .mdestroy = mvoid,
  84         /* Rendez */
  85         .initrendez = rfalse,
  86         .sleep = rsleep,
  87         .wake = rfalse,
  88         .wakeall = rfalse,
  89         .rdestroy = rvoid,
  90         /* Other */
  91         .errbuf = errbuf,
  92         .read = read,
  93         .write = write,
  94 };
  95