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51 lines (45 loc) · 1.83 KB
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/*
* This file is part of the MicroPython project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2017 Dan Halbert
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdint.h>
#include "py/mpstate.h"
#include "py/stackctrl.h"
#include "shared-bindings/ustack/__init__.h"
#if MICROPY_MAX_STACK_USAGE
uint32_t shared_module_ustack_max_stack_usage(void) {
// Start at stack limit and move up.
// Untouched stack was filled with a sentinel value.
// Stop at first non-sentinel byte.
char* p = MP_STATE_THREAD(stack_bottom);
while (*p++ == MP_MAX_STACK_USAGE_SENTINEL_BYTE) { }
return MP_STATE_THREAD(stack_top) - p;
}
#endif
uint32_t shared_module_ustack_stack_size() {
return MP_STATE_THREAD(stack_limit);
}
uint32_t shared_module_ustack_stack_usage() {
return mp_stack_usage();
}