1 files changed, 61 insertions, 0 deletions
diff --git a/portable/src/PStackSize.c b/portable/src/PStackSize.c
new file mode 100644
index 0000000..9679ca6
--- /dev/null
+++ b/portable/src/PStackSize.c
@@ -0,0 +1,61 @@
+/*---------------------------------------------------------------------------*
+ *  PStackSize.c  *
+ *                                                                           *
+ *  Copyright 2007, 2008 Nuance Communciations, Inc.                               *
+ *                                                                           *
+ *  Licensed under the Apache License, Version 2.0 (the 'License');          *
+ *  you may not use this file except in compliance with the License.         *
+ *                                                                           *
+ *  You may obtain a copy of the License at                                  *
+ *      http://www.apache.org/licenses/LICENSE-2.0                           *
+ *                                                                           *
+ *  Unless required by applicable law or agreed to in writing, software      *
+ *  distributed under the License is distributed on an 'AS IS' BASIS,        *
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * 
+ *  See the License for the specific language governing permissions and      *
+ *  limitations under the License.                                           *
+ *                                                                           *
+ *---------------------------------------------------------------------------*/
+
+#include "pstdio.h"
+#include "PStackSize.h"
+
+#ifdef _WIN32
+
+static const char * PSTACK_BASE = NULL;
+
+/** Initialize the stack base.  This should be done in the main() function.
+ * Note that the local variables of main() are not taken into account in the
+ * stack size computation.  To overcome this problem, rewrite main() as a
+ * simple function that first invokes PSTACK_SIZE_INIT and then invokes the
+ * original main().
+*/
+void PSTACK_SIZE_INIT()
+{
+  PSTACK_BASE = (const char *) _alloca(0);
+}
+
+/**
+ * Computes the current stack size.  The returned value is the number of bytes
+ * in the stack.
+ **/
+size_t PSTACK_SIZE_GET()
+{
+  return (PSTACK_BASE - ((const char *) _alloca(0)));
+}
+
+#else
+
+/* Insert other platform implementations here... */
+/*
+#error not supported at this time
+*/
+void PSTACK_SIZE_INIT()
+{}
+
+size_t PSTACK_SIZE_GET()
+{
+  return 0;
+}
+
+#endif