X-Git-Url: https://sigrok.org/gitweb/?p=libsigrokdecode.git;a=blobdiff_plain;f=log.c;h=95e3535723c0319f699b50558629ddc48fba0023;hp=a5e590beae3e3cd0698b6a22f2993d961566e11b;hb=4895418c6800ecb128ed36af2a1bc46916c9be85;hpb=41106a07486f46de5dac2fd55233691172d4fe59 diff --git a/log.c b/log.c index a5e590b..95e3535 100644 --- a/log.c +++ b/log.c @@ -23,24 +23,41 @@ #include #include +/** + * @file + * + * Controlling the libsigrokdecode message logging functionality. + */ + +/** + * @defgroup grp_logging Logging + * + * Controlling the libsigrokdecode message logging functionality. + * + * @{ + */ + /* Currently selected libsigrokdecode loglevel. Default: SRD_LOG_WARN. */ static int srd_loglevel = SRD_LOG_WARN; /* Show errors+warnings per default. */ /* Function prototype. */ -static int srd_logv(void *data, int loglevel, const char *format, va_list args); +static int srd_logv(void *cb_data, int loglevel, const char *format, + va_list args); -/* Pointer to the currently selected log handler. Default: srd_logv(). */ -static srd_log_handler_t srd_log_handler = srd_logv; +/* Pointer to the currently selected log callback. Default: srd_logv(). */ +static srd_log_callback_t srd_log_callback = srd_logv; /* - * Pointer to private data that can be passed to the log handler. + * Pointer to private data that can be passed to the log callback. * This can be used (for example) by C++ GUIs to pass a "this" pointer. */ -static void *srd_log_handler_data = NULL; +static void *srd_log_callback_data = NULL; /* Log domain (a short string that is used as prefix for all messages). */ +/** @cond PRIVATE */ #define LOGDOMAIN_MAXLEN 30 #define LOGDOMAIN_DEFAULT "srd: " +/** @endcond */ static char srd_log_domain[LOGDOMAIN_MAXLEN + 1] = LOGDOMAIN_DEFAULT; /** @@ -56,9 +73,10 @@ static char srd_log_domain[LOGDOMAIN_MAXLEN + 1] = LOGDOMAIN_DEFAULT; * * @param loglevel The loglevel to set (SRD_LOG_NONE, SRD_LOG_ERR, * SRD_LOG_WARN, SRD_LOG_INFO, SRD_LOG_DBG, or SRD_LOG_SPEW). + * * @return SRD_OK upon success, SRD_ERR_ARG upon invalid loglevel. */ -int srd_log_loglevel_set(int loglevel) +SRD_API int srd_log_loglevel_set(int loglevel) { if (loglevel < SRD_LOG_NONE || loglevel > SRD_LOG_SPEW) { srd_err("Invalid loglevel %d.", loglevel); @@ -77,7 +95,7 @@ int srd_log_loglevel_set(int loglevel) * * @return The currently configured libsigrokdecode loglevel. */ -int srd_log_loglevel_get(void) +SRD_API int srd_log_loglevel_get(void) { return srd_loglevel; } @@ -93,9 +111,10 @@ int srd_log_loglevel_get(void) * In order to not use a logdomain, pass an empty string. * The function makes its own copy of the input string, i.e. * the caller does not need to keep it around. + * * @return SRD_OK upon success, SRD_ERR_ARG upon invalid logdomain. */ -int srd_log_logdomain_set(const char *logdomain) +SRD_API int srd_log_logdomain_set(const char *logdomain) { if (!logdomain) { srd_err("log: %s: logdomain was NULL", __func__); @@ -117,63 +136,66 @@ int srd_log_logdomain_set(const char *logdomain) * string. The caller is responsible for g_free()ing the string when * it is no longer needed. */ -char *srd_log_logdomain_get(void) +SRD_API char *srd_log_logdomain_get(void) { return g_strdup((const char *)&srd_log_domain); } /** - * Set the libsigrokdecode log handler to the specified function. + * Set the libsigrokdecode log callback to the specified function. + * + * @param cb Function pointer to the log callback function to use. + * Must not be NULL. + * @param cb_data Pointer to private data to be passed on. This can be used + * by the caller to pass arbitrary data to the log functions. + * This pointer is only stored or passed on by libsigrokdecode, + * and is never used or interpreted in any way. The pointer + * is allowed to be NULL if the caller doesn't need/want to + * pass any data. * - * @param handler Function pointer to the log handler function to use. - * Must not be NULL. - * @param data Pointer to private data to be passed on. This can be used by - * the caller to pass arbitrary data to the log functions. This - * pointer is only stored or passed on by libsigrokdecode, and - * is never used or interpreted in any way. The pointer is allowed - * to be NULL if the caller doesn't need/want to pass any data. * @return SRD_OK upon success, SRD_ERR_ARG upon invalid arguments. */ -int srd_log_handler_set(srd_log_handler_t handler, void *data) +SRD_API int srd_log_callback_set(srd_log_callback_t cb, void *cb_data) { - if (!handler) { - srd_err("log: %s: handler was NULL", __func__); + if (!cb) { + srd_err("log: %s: cb was NULL", __func__); return SRD_ERR_ARG; } - /* Note: 'data' is allowed to be NULL. */ + /* Note: 'cb_data' is allowed to be NULL. */ - srd_log_handler = handler; - srd_log_handler_data = data; + srd_log_callback = cb; + srd_log_callback_data = cb_data; return SRD_OK; } /** - * Set the libsigrokdecode log handler to the default built-in one. + * Set the libsigrokdecode log callback to the default built-in one. * - * Additionally, the internal 'srd_log_handler_data' pointer is set to NULL. + * Additionally, the internal 'srd_log_callback_data' pointer is set to NULL. * - * @return SRD_OK upon success, a negative error code otherwise. + * @return SRD_OK upon success, a (negative) error code otherwise. */ -int srd_log_handler_set_default(void) +SRD_API int srd_log_callback_set_default(void) { /* * Note: No log output in this function, as it should safely work - * even if the currently set log handler is buggy/broken. + * even if the currently set log callback is buggy/broken. */ - srd_log_handler = srd_logv; - srd_log_handler_data = NULL; + srd_log_callback = srd_logv; + srd_log_callback_data = NULL; return SRD_OK; } -static int srd_logv(void *data, int loglevel, const char *format, va_list args) +static int srd_logv(void *cb_data, int loglevel, const char *format, + va_list args) { int ret; - /* This specific log handler doesn't need the void pointer data. */ - (void)data; + /* This specific log callback doesn't need the void pointer data. */ + (void)cb_data; /* Only output messages of at least the selected loglevel(s). */ if (loglevel > srd_loglevel) @@ -187,74 +209,87 @@ static int srd_logv(void *data, int loglevel, const char *format, va_list args) return ret; } -int srd_log(int loglevel, const char *format, ...) +/** @private */ +SRD_PRIV int srd_log(int loglevel, const char *format, ...) { int ret; va_list args; va_start(args, format); - ret = srd_log_handler(srd_log_handler_data, loglevel, format, args); + ret = srd_log_callback(srd_log_callback_data, loglevel, format, args); va_end(args); return ret; } -int srd_spew(const char *format, ...) +/** @private */ +SRD_PRIV int srd_spew(const char *format, ...) { int ret; va_list args; va_start(args, format); - ret = srd_log_handler(srd_log_handler_data, SRD_LOG_SPEW, format, args); + ret = srd_log_callback(srd_log_callback_data, SRD_LOG_SPEW, + format, args); va_end(args); return ret; } -int srd_dbg(const char *format, ...) +/** @private */ +SRD_PRIV int srd_dbg(const char *format, ...) { int ret; va_list args; va_start(args, format); - ret = srd_log_handler(srd_log_handler_data, SRD_LOG_DBG, format, args); + ret = srd_log_callback(srd_log_callback_data, SRD_LOG_DBG, + format, args); va_end(args); return ret; } -int srd_info(const char *format, ...) +/** @private */ +SRD_PRIV int srd_info(const char *format, ...) { int ret; va_list args; va_start(args, format); - ret = srd_log_handler(srd_log_handler_data, SRD_LOG_INFO, format, args); + ret = srd_log_callback(srd_log_callback_data, SRD_LOG_INFO, + format, args); va_end(args); return ret; } -int srd_warn(const char *format, ...) +/** @private */ +SRD_PRIV int srd_warn(const char *format, ...) { int ret; va_list args; va_start(args, format); - ret = srd_log_handler(srd_log_handler_data, SRD_LOG_WARN, format, args); + ret = srd_log_callback(srd_log_callback_data, SRD_LOG_WARN, + format, args); va_end(args); return ret; } -int srd_err(const char *format, ...) +/** @private */ +SRD_PRIV int srd_err(const char *format, ...) { int ret; va_list args; va_start(args, format); - ret = srd_log_handler(srd_log_handler_data, SRD_LOG_ERR, format, args); + ret = srd_log_callback(srd_log_callback_data, SRD_LOG_ERR, + format, args); va_end(args); return ret; } + +/** @} */