MultiMedia/cdxlplay/SDL_cond_aros.c

   1 #include <SDL/SDL.h>
   2 #include <exec/exec.h>
   3 #include <proto/exec.h>
   4 #ifdef __AMIGAOS4__
   5 #include <inline4/exec.h>
   6 #endif
   7 #include "lists.h"
   8
   9 typedef struct SDL_cond_node {
  10         struct node node;
  11         struct Task *task;
  12         int32_t signal;
  13 } SDL_cond_node;
  14
  15 struct SDL_cond {
  16         struct list list;
  17 };
  18
  19 SDL_cond *SDL_CreateCond(void) {
  20         SDL_cond *cond;
  21         cond = malloc(sizeof(*cond));
  22         if (cond) {
  23                 init_list(&cond->list);
  24         }
  25         return cond;
  26 }
  27
  28 void SDL_DestroyCond(SDL_cond *cond) {
  29         if (cond) {
  30                 free(cond);
  31         }
  32 }
  33
  34 int SDL_CondWait(SDL_cond *cond, SDL_mutex *mut) {
  35         SDL_cond_node node;
  36         node.task = FindTask(NULL);
  37         node.signal = AllocSignal(-1);
  38         add_tail(&cond->list, &node.node);
  39         SDL_UnlockMutex(mut);
  40         Wait(1 << node.signal);
  41         FreeSignal(node.signal);
  42         SDL_LockMutex(mut);
  43         return 0;
  44 }
  45
  46 int SDL_CondSignal(SDL_cond *cond) {
  47         SDL_cond_node *node;
  48         node = (SDL_cond_node *)rem_head(&cond->list);
  49         if (node) {
  50                 Signal(node->task, 1 << node->signal);
  51                 return 0;
  52         }
  53         return -1;
  54 }