TestSynchEvent.c

 
#include <winpr/crt.h>
#include <winpr/synch.h>
 
int TestSynchEvent(int argc, char* argv[])
{
  HANDLE event = NULL;
  WINPR_UNUSED(argc);
  WINPR_UNUSED(argv);
  if (ResetEvent(NULL))
  {
    printf("ResetEvent(NULL) unexpectedly succeeded\n");
    return -1;
  }
 
  if (SetEvent(NULL))
  {
    printf("SetEvent(NULL) unexpectedly succeeded\n");
    return -1;
  }
 
  event = CreateEvent(NULL, TRUE, TRUE, NULL);
 
  if (!event)
  {
    printf("CreateEvent failure\n");
    return -1;
  }
 
  if (WaitForSingleObject(event, INFINITE) != WAIT_OBJECT_0)
  {
    printf("WaitForSingleObject failure 1\n");
    return -1;
  }
 
  if (!ResetEvent(event))
  {
    printf("ResetEvent failure with signaled event object\n");
    return -1;
  }
 
  if (WaitForSingleObject(event, 0) != WAIT_TIMEOUT)
  {
    printf("WaitForSingleObject failure 2\n");
    return -1;
  }
 
  if (!ResetEvent(event))
  {
    /* Note: ResetEvent must also succeed if event is currently nonsignaled */
    printf("ResetEvent failure with nonsignaled event object\n");
    return -1;
  }
 
  if (!SetEvent(event))
  {
    printf("SetEvent failure with nonsignaled event object\n");
    return -1;
  }
 
  if (WaitForSingleObject(event, 0) != WAIT_OBJECT_0)
  {
    printf("WaitForSingleObject failure 3\n");
    return -1;
  }
 
  for (int i = 0; i < 10000; i++)
  {
    if (!SetEvent(event))
    {
      printf("SetEvent failure with signaled event object (i = %d)\n", i);
      return -1;
    }
  }
 
  if (!ResetEvent(event))
  {
    printf("ResetEvent failure after multiple SetEvent calls\n");
    return -1;
  }
 
  /* Independent of the amount of the previous SetEvent calls, a single
     ResetEvent must be sufficient to get into nonsignaled state */
 
  if (WaitForSingleObject(event, 0) != WAIT_TIMEOUT)
  {
    printf("WaitForSingleObject failure 4\n");
    return -1;
  }
 
  (void)CloseHandle(event);
 
  return 0;
}