1 files changed, 59 insertions, 0 deletions
diff --git a/tests/tryentercs2.c b/tests/tryentercs2.c
new file mode 100644
index 0000000..adce6df
--- /dev/null
+++ b/tests/tryentercs2.c
@@ -0,0 +1,59 @@
+/*
+ * tryentercs.c
+ *
+ * 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);
+}
+\ No newline at end of file