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annotate common/logging.h @ 287:b033b16dd290

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Add OutputDebugString macro This helps when debugging interprocess calls on Windows where you do not get stdout on console
author Andre Heinecke <aheinecke@intevation.de>
date Wed, 02 Apr 2014 13:48:31 +0000
parents bd7fb50078b4
children b1059360a0c7
rev   line source
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bd7fb50078b4 Add logging.h for some logging / debug functions
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1 #ifndef COMMON_LOGGING_H
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2 #define COMMON_LOGGING_H
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3
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4 #ifdef __cplusplus
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5 extern "C" {
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6 #endif
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7
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8 /*
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9 * @file
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10 * @brief Logging and debugging functions
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11 */
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12
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13 #ifdef WIN32
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14
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15 #include <windows.h>
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16
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17 /** @brief Gets the localized error message for the last error
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18 * returned by GetLastError
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19 *
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20 * @returns utf8 error message that needs to be freed by the caller.
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21 **/
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22
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23 char *getLastErrorMsg();
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24
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25 #endif
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26
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27 /**
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28 * @def DEBUGOUTPUT
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29 * @brief If defined code for extra debugging output will be generated.
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30 *
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31 * Will be defined if current build is not an RELEASE_BUILD.
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32 */
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33 #ifndef RELEASE_BUILD
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34 #define DEBUGOUTPUT
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35 #endif
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36
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37 /**
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38 * @def DEBUGPREFIX
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39 * @brief A string prepended to debug output.
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40 *
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41 * Should be defined to indicate which module created the output.
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42 */
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43 #ifndef DEBUGPREFIX
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44 #define DEBUGPREFIX ""
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45 #endif
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46
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47 /**
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48 * @def DEBUGPRINTF(fmt, ...)
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49 * @brief Debug printf
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50 *
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51 * Prints to stderr if DEBUGOUTPUT is defined.
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52 */
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53 #ifdef DEBUGOUTPUT
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54 #define DEBUGPRINTF(fmt, ...) fprintf(stderr, DEBUGPREFIX "DEBUG: " fmt, ##__VA_ARGS__);
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55 #else
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56 #define DEBUGPRINTF(fmt, ...)
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57 #endif
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58
287
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59 /**
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60 * @def DEBUGMSG(msg)
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61 * @brief Prints a static debug message
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62 *
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63 * If DEBUGOUTPUT is defined this. Prints a debug message
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64 * to stdout on Unix systems. On Windows OutputDebugString is used.
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65 */
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66 #ifdef DEBUGOUTPUT
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67 # ifdef WIN32
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68 # define DEBUGMSG(msg) OutputDebugString (msg);
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69 # else
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70 # define DEBUGMSG(msg) printf (DEBUGPREFIX "DEBUG: " msg "\n");
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71 # endif
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72 #else
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73 # define DEBUGPRINTF(fmt, ...)
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74 #endif
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75
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76
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77 /**
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78 * @def ERRORPRINTF(fmt, ...)
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79 * @brief Debug printf
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80 *
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81 * Prints an error to stderr
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82 */
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83 #define ERRORPRINTF(fmt, ...) fprintf(stderr, DEBUGPREFIX "ERROR: " fmt, ##__VA_ARGS__);
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84
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85
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86
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87 #ifdef __cplusplus
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88 }
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89 #endif
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90
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91 #endif /* COMMON_LOGGING_H */
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