TestErrorSetLastError.c

 
#include <winpr/crt.h>
#include <winpr/crypto.h>
#include <winpr/wlog.h>
#include <winpr/synch.h>
#include <winpr/thread.h>
#include <winpr/interlocked.h>
 
#include <winpr/error.h>
 
static int status = 0;
 
static LONG* pLoopCount = nullptr;
static BOOL bStopTest = FALSE;
 
static UINT32 prand(UINT32 max)
{
  UINT32 tmp = 0;
  if (max <= 1)
    return 1;
  if (winpr_RAND(&tmp, sizeof(tmp)) < 0)
  {
    (void)fprintf(stderr, "winpr_RAND failing, retry...\n");
    // NOLINTNEXTLINE(concurrency-mt-unsafe)
    exit(-1);
  }
  return tmp % (max - 1) + 1;
}
 
static DWORD WINAPI test_error_thread(LPVOID arg)
{
  int id = 0;
  DWORD dwErrorSet = 0;
  DWORD dwErrorGet = 0;
 
  id = (int)(size_t)arg;
 
  do
  {
    dwErrorSet = prand(UINT32_MAX - 1) + 1;
    SetLastError(dwErrorSet);
    if ((dwErrorGet = GetLastError()) != dwErrorSet)
    {
      printf("GetLastError() failure (thread %d): Expected: 0x%08" PRIX32
             ", Actual: 0x%08" PRIX32 "\n",
             id, dwErrorSet, dwErrorGet);
      if (!status)
        status = -1;
      break;
    }
    InterlockedIncrement(pLoopCount);
  } while (!status && !bStopTest);
 
  return 0;
}
 
int TestErrorSetLastError(int argc, char* argv[])
{
  DWORD error = 0;
  HANDLE threads[4];
 
  WINPR_UNUSED(argc);
  WINPR_UNUSED(argv);
 
  /* We must initialize WLog here. It will check for settings
   * in the environment and if the variables are not set, the last
   * error state is changed... */
  WLog_GetRoot();
 
  SetLastError(ERROR_ACCESS_DENIED);
 
  error = GetLastError();
 
  if (error != ERROR_ACCESS_DENIED)
  {
    printf("GetLastError() failure: Expected: 0x%08X, Actual: 0x%08" PRIX32 "\n",
           ERROR_ACCESS_DENIED, error);
    return -1;
  }
 
  pLoopCount = winpr_aligned_malloc(sizeof(LONG), sizeof(LONG));
  if (!pLoopCount)
  {
    printf("Unable to allocate memory\n");
    return -1;
  }
  *pLoopCount = 0;
 
  for (int i = 0; i < 4; i++)
  {
    if (!(threads[i] =
              CreateThread(nullptr, 0, test_error_thread, (void*)(size_t)0, 0, nullptr)))
    {
      printf("Failed to create thread #%d\n", i);
      return -1;
    }
  }
 
  // let the threads run for at least 0.2 seconds
  Sleep(200);
  bStopTest = TRUE;
 
  (void)WaitForSingleObject(threads[0], INFINITE);
  (void)WaitForSingleObject(threads[1], INFINITE);
  (void)WaitForSingleObject(threads[2], INFINITE);
  (void)WaitForSingleObject(threads[3], INFINITE);
 
  (void)CloseHandle(threads[0]);
  (void)CloseHandle(threads[1]);
  (void)CloseHandle(threads[2]);
  (void)CloseHandle(threads[3]);
 
  error = GetLastError();
 
  if (error != ERROR_ACCESS_DENIED)
  {
    printf("GetLastError() failure: Expected: 0x%08X, Actual: 0x%08" PRIX32 "\n",
           ERROR_ACCESS_DENIED, error);
    return -1;
  }
 
  if (*pLoopCount < 4)
  {
    printf("Error: unexpected loop count\n");
    return -1;
  }
 
  printf("Completed %" PRId32 " iterations.\n", *pLoopCount);
  winpr_aligned_free(pLoopCount);
 
  return status;
}