CRAC Team / CRAC-Strat_2017-19-05-2017

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mbed/error.h@17:d1594579eec6, 2017-05-19 (annotated)

Committer:
ClementBreteau
Date:
Fri May 19 17:14:07 2017 +0000
Revision:
17:d1594579eec6
Parent:
0:ad97421fb1fb 
strat du robot, 19-05-2017, 19h

Who changed what in which revision?

UserRevisionLine numberNew contents of line
antbig 0:ad97421fb1fb 1 /* mbed Microcontroller Library - error
antbig 0:ad97421fb1fb 2 * Copyright (c) 2006-2009 ARM Limited. All rights reserved.
antbig 0:ad97421fb1fb 3 */
antbig 0:ad97421fb1fb 4
antbig 0:ad97421fb1fb 5 #ifndef MBED_ERROR_H
antbig 0:ad97421fb1fb 6 #define MBED_ERROR_H
antbig 0:ad97421fb1fb 7
antbig 0:ad97421fb1fb 8 /* Reporting Compile-Time Errors:
antbig 0:ad97421fb1fb 9 * To generate a fatal compile-time error, you can use the pre-processor #error directive.
antbig 0:ad97421fb1fb 10 *
antbig 0:ad97421fb1fb 11 * > #error "That shouldn't have happened!"
antbig 0:ad97421fb1fb 12 *
antbig 0:ad97421fb1fb 13 * If the compiler evaluates this line, it will report the error and stop the compile.
antbig 0:ad97421fb1fb 14 *
antbig 0:ad97421fb1fb 15 * For example, you could use this to check some user-defined compile-time variables:
antbig 0:ad97421fb1fb 16 *
antbig 0:ad97421fb1fb 17 * > #define NUM_PORTS 7
antbig 0:ad97421fb1fb 18 * > #if (NUM_PORTS > 4)
antbig 0:ad97421fb1fb 19 * > #error "NUM_PORTS must be less than 4"
antbig 0:ad97421fb1fb 20 * > #endif
antbig 0:ad97421fb1fb 21 *
antbig 0:ad97421fb1fb 22 * Reporting Run-Time Errors:
antbig 0:ad97421fb1fb 23 * To generate a fatal run-time error, you can use the mbed error() function.
antbig 0:ad97421fb1fb 24 *
antbig 0:ad97421fb1fb 25 * > error("That shouldn't have happened!");
antbig 0:ad97421fb1fb 26 *
antbig 0:ad97421fb1fb 27 * If the mbed running the program executes this function, it will print the
antbig 0:ad97421fb1fb 28 * message via the USB serial port, and then die with the blue lights of death!
antbig 0:ad97421fb1fb 29 *
antbig 0:ad97421fb1fb 30 * The message can use printf-style formatting, so you can report variables in the
antbig 0:ad97421fb1fb 31 * message too. For example, you could use this to check a run-time condition:
antbig 0:ad97421fb1fb 32 *
antbig 0:ad97421fb1fb 33 * > if(x >= 5) {
antbig 0:ad97421fb1fb 34 * > error("expected x to be less than 5, but got %d", x);
antbig 0:ad97421fb1fb 35 * > }
antbig 0:ad97421fb1fb 36 */
antbig 0:ad97421fb1fb 37
antbig 0:ad97421fb1fb 38 #if 0 // for documentation only
antbig 0:ad97421fb1fb 39 /* Function: error
antbig 0:ad97421fb1fb 40 * Report a fatal runtime error
antbig 0:ad97421fb1fb 41 *
antbig 0:ad97421fb1fb 42 * Outputs the specified error message to stderr so it will appear via the USB
antbig 0:ad97421fb1fb 43 * serial port, and then calls exit(1) to die with the blue lights of death.
antbig 0:ad97421fb1fb 44 *
antbig 0:ad97421fb1fb 45 * Variables:
antbig 0:ad97421fb1fb 46 * format - printf-style format string, followed by associated variables
antbig 0:ad97421fb1fb 47 */
antbig 0:ad97421fb1fb 48 void error(const char* format, ...);
antbig 0:ad97421fb1fb 49 #endif
antbig 0:ad97421fb1fb 50
antbig 0:ad97421fb1fb 51 #include <stdlib.h>
antbig 0:ad97421fb1fb 52
antbig 0:ad97421fb1fb 53 #ifdef NDEBUG
antbig 0:ad97421fb1fb 54 #define error(...) (exit(1))
antbig 0:ad97421fb1fb 55 #else
antbig 0:ad97421fb1fb 56 #include <stdio.h>
antbig 0:ad97421fb1fb 57 #define error(...) (fprintf(stderr, __VA_ARGS__), exit(1))
antbig 0:ad97421fb1fb 58 #endif
antbig 0:ad97421fb1fb 59
antbig 0:ad97421fb1fb 60 #endif