LCOV - code coverage report
Current view: top level - py - stackctrl.c (source / functions) Hit Total Coverage
Test: unix_coverage_v1.23.0-410-g82e69df33.info Lines: 16 17 94.1 %
Date: 2024-10-10 13:49:24 Functions: 5 5 100.0 %
Branches: 1 2 50.0 %

           Branch data     Line data    Source code
       1                 :            : /*
       2                 :            :  * This file is part of the MicroPython project, http://micropython.org/
       3                 :            :  *
       4                 :            :  * The MIT License (MIT)
       5                 :            :  *
       6                 :            :  * Copyright (c) 2014 Paul Sokolovsky
       7                 :            :  *
       8                 :            :  * Permission is hereby granted, free of charge, to any person obtaining a copy
       9                 :            :  * of this software and associated documentation files (the "Software"), to deal
      10                 :            :  * in the Software without restriction, including without limitation the rights
      11                 :            :  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
      12                 :            :  * copies of the Software, and to permit persons to whom the Software is
      13                 :            :  * furnished to do so, subject to the following conditions:
      14                 :            :  *
      15                 :            :  * The above copyright notice and this permission notice shall be included in
      16                 :            :  * all copies or substantial portions of the Software.
      17                 :            :  *
      18                 :            :  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
      19                 :            :  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      20                 :            :  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
      21                 :            :  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      22                 :            :  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
      23                 :            :  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
      24                 :            :  * THE SOFTWARE.
      25                 :            :  */
      26                 :            : 
      27                 :            : // This API is deprecated, please use py/cstack.h instead
      28                 :            : 
      29                 :            : #include "py/runtime.h"
      30                 :            : 
      31                 :            : #if !MICROPY_PREVIEW_VERSION_2
      32                 :            : 
      33                 :            : #include "py/stackctrl.h"
      34                 :            : 
      35                 :          2 : void mp_stack_ctrl_init(void) {
      36                 :            :     #if __GNUC__ >= 13
      37                 :            :     #pragma GCC diagnostic push
      38                 :            :     #pragma GCC diagnostic ignored "-Wdangling-pointer"
      39                 :            :     #endif
      40                 :          2 :     volatile int stack_dummy;
      41                 :          2 :     MP_STATE_THREAD(stack_top) = (char *)&stack_dummy;
      42                 :            :     #if __GNUC__ >= 13
      43                 :            :     #pragma GCC diagnostic pop
      44                 :            :     #endif
      45                 :          2 : }
      46                 :            : 
      47                 :          2 : void mp_stack_set_top(void *top) {
      48                 :          2 :     MP_STATE_THREAD(stack_top) = top;
      49                 :          2 : }
      50                 :            : 
      51                 :          4 : mp_uint_t mp_stack_usage(void) {
      52                 :            :     // Assumes descending stack
      53                 :          4 :     volatile int stack_dummy;
      54                 :          4 :     return MP_STATE_THREAD(stack_top) - (char *)&stack_dummy;
      55                 :            : }
      56                 :            : 
      57                 :            : #if MICROPY_STACK_CHECK
      58                 :            : 
      59                 :          2 : void mp_stack_set_limit(mp_uint_t limit) {
      60                 :          2 :     MP_STATE_THREAD(stack_limit) = limit;
      61                 :          2 : }
      62                 :            : 
      63                 :          4 : void mp_stack_check(void) {
      64         [ -  + ]:          4 :     if (mp_stack_usage() >= MP_STATE_THREAD(stack_limit)) {
      65                 :          0 :         mp_raise_recursion_depth();
      66                 :            :     }
      67                 :          4 : }
      68                 :            : 
      69                 :            : #endif // MICROPY_STACK_CHECK
      70                 :            : 
      71                 :            : #endif // !MICROPY_PREVIEW_VERSION_2

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