esp-idf/components/newlib/platform_include/assert.h
Sachin Parekh 659cfcb1f6 newlib: Override __assert and __assert_func
Default assert implementation calls fiprintf, which tries to acquire a
lock and fails if it is executing in critical section or ISR
2021-09-08 16:32:09 +08:00

53 lines
1.8 KiB
C

// Copyright 2017 Espressif Systems (Shanghai) PTE LTD
//
// 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.
/* This header file wraps newlib's own unmodified assert.h and adds
support for silent assertion failure.
*/
#pragma once
#include <sdkconfig.h>
#include <stdlib.h>
#include <stdint.h>
#include_next <assert.h>
/* moved part of libc provided assert to here allows
* tweaking the assert macro to use __builtin_expect()
* and reduce jumps in the "asserts OK" code path
*
* Note: using __builtin_expect() not likely() to avoid defining the likely
* macro in namespace of non-IDF code that may include this standard header.
*/
#undef assert
/* __FILENAME__ points to the file name instead of path + filename
* e.g __FILE__ points to "/apps/test.c" where as __FILENAME__ points to "test.c"
*/
#define __FILENAME__ (__builtin_strrchr( "/" __FILE__, '/') + 1)
#if defined(NDEBUG)
#define assert(__e) ((void)(__e))
#elif CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_SILENT
#define assert(__e) (__builtin_expect(!!(__e), 1) ? (void)0 : __assert_func(NULL, 0, NULL, NULL))
#else // !CONFIG_COMPILER_OPTIMIZATION_ASSERTIONS_SILENT
#define assert(__e) (__builtin_expect(!!(__e), 1) ? (void)0 : __assert_func (__FILENAME__, __LINE__, \
__ASSERT_FUNC, #__e))
#endif