reactos/apps/tests/suspend/suspend.c

   1 #define UNICODE
   2
   3 #define NTOS_MODE_USER
   4 #include <ntos.h>
   5 #include <windows.h>
   6 #include <stdio.h>
   7
   8 #define DBG
   9 #define NDEBUG
  10 #include <debug.h>
  11
  12 static volatile DWORD z;
  13 static volatile DWORD x=0;
  14
  15 static NTSTATUS STDCALL
  16 thread_1(PVOID Param)
  17 {
  18   DWORD y=0;
  19
  20   for(;;)
  21   {
  22    z++;
  23    if(x>50)
  24    {
  25      printf("I should have been suspended for years :-)\n");
  26      Sleep(100);
  27      x=0;y++;
  28      if(y==3) ExitProcess(0);
  29    }
  30   }
  31 }
  32
  33 int
  34 main(int argc, char *argv[])
  35 {
  36   HANDLE thread;
  37   DWORD thread_id;
  38   CONTEXT context;
  39
  40   context.ContextFlags=CONTEXT_CONTROL;
  41
  42   z=0;
  43   thread=CreateThread(NULL,
  44                       0x1000,
  45                       (LPTHREAD_START_ROUTINE)thread_1,
  46                       NULL,
  47                       0,
  48                       &thread_id);
  49
  50   if(!thread)
  51   {
  52     printf("Error: could not create thread ...\n");
  53     ExitProcess(0);
  54   }
  55
  56   Sleep(1000);
  57
  58   SuspendThread(thread);
  59
  60   for(;;)
  61   {
  62     printf("%lx ", z);
  63     Sleep(100);x++;
  64     if(x>100 && GetThreadContext(thread, &context))
  65     {
  66       printf("EIP: %lx\n", context.Eip);
  67       printf("Calling resumethread ... \n");
  68       ResumeThread(thread);
  69     }
  70   }
  71
  72   ExitProcess(0);
  73   return(0);
  74 }