Imported Upstream version 0.13.2+dsfg1

deps/w32-pthreads/tests/tryentercs2.c

@@ -0,0 +1,92 @@
+/*
+ * tryentercs.c
+ *
+ *
+ * --------------------------------------------------------------------------
+ *
+ *      Pthreads-win32 - POSIX Threads Library for Win32
+ *      Copyright(C) 1998 John E. Bossom
+ *      Copyright(C) 1999,2005 Pthreads-win32 contributors
+ * 
+ *      Contact Email: rpj@callisto.canberra.edu.au
+ * 
+ *      The current list of contributors is contained
+ *      in the file CONTRIBUTORS included with the source
+ *      code distribution. The list can also be seen at the
+ *      following World Wide Web location:
+ *      http://sources.redhat.com/pthreads-win32/contributors.html
+ * 
+ *      This library is free software; you can redistribute it and/or
+ *      modify it under the terms of the GNU Lesser General Public
+ *      License as published by the Free Software Foundation; either
+ *      version 2 of the License, or (at your option) any later version.
+ * 
+ *      This library is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *      Lesser General Public License for more details.
+ * 
+ *      You should have received a copy of the GNU Lesser General Public
+ *      License along with this library in the file COPYING.LIB;
+ *      if not, write to the Free Software Foundation, Inc.,
+ *      51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
+ *
+ * --------------------------------------------------------------------------
+ *
+ * See if we have the TryEnterCriticalSection function.
+ * Does not use any part of pthreads.
+ */
+
+#include <windows.h>
+#include <process.h>
+#include <stdio.h>
+
+/*
+ * Function pointer to TryEnterCriticalSection if it exists
+ * - otherwise NULL
+ */
+BOOL (WINAPI *_try_enter_critical_section)(LPCRITICAL_SECTION) = NULL;
+
+/*
+ * Handle to kernel32.dll
+ */
+static HINSTANCE _h_kernel32;
+
+
+int
+main()
+{
+  LPCRITICAL_SECTION lpcs = NULL;
+
+  SetLastError(0);
+
+  printf("Last Error [main enter] %ld\n", (long) GetLastError());
+
+  /*
+   * Load KERNEL32 and try to get address of TryEnterCriticalSection
+   */
+  _h_kernel32 = LoadLibrary(TEXT("KERNEL32.DLL"));
+  _try_enter_critical_section =
+        (BOOL (PT_STDCALL *)(LPCRITICAL_SECTION))
+        GetProcAddress(_h_kernel32,
+                         (LPCSTR) "TryEnterCriticalSection");
+
+  if (_try_enter_critical_section != NULL)
+    {
+      SetLastError(0);
+
+      (*_try_enter_critical_section)(lpcs);
+
+      printf("Last Error [try enter] %ld\n", (long) GetLastError());
+    }
+
+  (void) FreeLibrary(_h_kernel32);
+
+  printf("This system %s TryEnterCriticalSection.\n",
+         (_try_enter_critical_section == NULL) ? "DOES NOT SUPPORT" : "SUPPORTS");
+  printf("POSIX Mutexes will be based on Win32 %s.\n",
+         (_try_enter_critical_section == NULL) ? "Mutexes" : "Critical Sections");
+
+  return(0);
+}
+