| /*---------------------------------------------------------------------------* |
| * 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 |