lws-logs.h

/*
 * libwebsockets - small server side websockets and web server implementation
 *
 * Copyright (C) 2010 - 2019 Andy Green <andy@warmcat.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */
 
 
#define LLL_ERR         (1 << 0)
#define LLL_WARN        (1 << 1)
#define LLL_NOTICE      (1 << 2)
#define LLL_INFO        (1 << 3)
#define LLL_DEBUG       (1 << 4)
#define LLL_PARSER      (1 << 5)
#define LLL_HEADER      (1 << 6)
#define LLL_EXT         (1 << 7)
#define LLL_CLIENT      (1 << 8)
#define LLL_LATENCY     (1 << 9)
#define LLL_USER        (1 << 10)
#define LLL_THREAD      (1 << 11)
 
#define LLL_COUNT       (12) /* set to count of valid flags */
 
LWS_VISIBLE LWS_EXTERN int
lwsl_timestamp(int level, char *p, size_t len);
 
#if defined(LWS_PLAT_OPTEE) && !defined(LWS_WITH_NETWORK)
#define _lws_log(aaa, ...) SMSG(__VA_ARGS__)
#else
LWS_VISIBLE LWS_EXTERN void _lws_log(int filter, const char *format, ...) LWS_FORMAT(2);
LWS_VISIBLE LWS_EXTERN void _lws_logv(int filter, const char *format, va_list vl);
#endif
 
/*
 * Figure out which logs to build in or not
 */
 
#if defined(_DEBUG)
 /*
  * In DEBUG build, select all logs unless NO_LOGS
  */
 #if defined(LWS_WITH_NO_LOGS)
  #define _LWS_LINIT (LLL_ERR | LLL_USER)
 #else
   #define _LWS_LINIT ((1 << LLL_COUNT) - 1)
 #endif
#else /* not _DEBUG */
#if defined(LWS_WITH_NO_LOGS)
#define _LWS_LINIT (LLL_ERR | LLL_USER)
#else
 #define _LWS_LINIT (LLL_ERR | LLL_USER | LLL_WARN | LLL_NOTICE)
#endif
#endif /* _DEBUG */
 
/*
 * Create either empty overrides or the ones forced at build-time.
 * These overrides have the final say... any bits set in
 * LWS_LOGGING_BITFIELD_SET force the build of those logs, any bits
 * set in LWS_LOGGING_BITFIELD_CLEAR disable the build of those logs.
 *
 * If not defined lws decides based on CMAKE_BUILD_TYPE=DEBUG or not
 */
 
#if defined(LWS_LOGGING_BITFIELD_SET)
 #define _LWS_LBS (LWS_LOGGING_BITFIELD_SET)
#else
 #define _LWS_LBS 0
#endif
 
#if defined(LWS_LOGGING_BITFIELD_CLEAR)
 #define _LWS_LBC (LWS_LOGGING_BITFIELD_CLEAR)
#else
 #define _LWS_LBC 0
#endif
 
/*
 * Compute the final active logging bitfield for build
 */
#define _LWS_ENABLED_LOGS (((_LWS_LINIT) | (_LWS_LBS)) & ~(_LWS_LBC))
 
/*
 * Individually enable or disable log levels for build
 * depending on what was computed
 */
 
#if (_LWS_ENABLED_LOGS & LLL_ERR)
#define lwsl_err(...) _lws_log(LLL_ERR, __VA_ARGS__)
#else
#define lwsl_err(...) do {} while(0)
#endif
 
#if (_LWS_ENABLED_LOGS & LLL_WARN)
#define lwsl_warn(...) _lws_log(LLL_WARN, __VA_ARGS__)
#else
#define lwsl_warn(...) do {} while(0)
#endif
 
#if (_LWS_ENABLED_LOGS & LLL_NOTICE)
#define lwsl_notice(...) _lws_log(LLL_NOTICE, __VA_ARGS__)
#else
#define lwsl_notice(...) do {} while(0)
#endif
 
#if (_LWS_ENABLED_LOGS & LLL_INFO)
#define lwsl_info(...) _lws_log(LLL_INFO, __VA_ARGS__)
#else
#define lwsl_info(...) do {} while(0)
#endif
 
#if (_LWS_ENABLED_LOGS & LLL_DEBUG)
#define lwsl_debug(...) _lws_log(LLL_DEBUG, __VA_ARGS__)
#else
#define lwsl_debug(...) do {} while(0)
#endif
 
#if (_LWS_ENABLED_LOGS & LLL_PARSER)
#define lwsl_parser(...) _lws_log(LLL_PARSER, __VA_ARGS__)
#else
#define lwsl_parser(...) do {} while(0)
#endif
 
#if (_LWS_ENABLED_LOGS & LLL_HEADER)
#define lwsl_header(...) _lws_log(LLL_HEADER, __VA_ARGS__)
#else
#define lwsl_header(...) do {} while(0)
#endif
 
#if (_LWS_ENABLED_LOGS & LLL_EXT)
#define lwsl_ext(...) _lws_log(LLL_EXT, __VA_ARGS__)
#else
#define lwsl_ext(...) do {} while(0)
#endif
 
#if (_LWS_ENABLED_LOGS & LLL_CLIENT)
#define lwsl_client(...) _lws_log(LLL_CLIENT, __VA_ARGS__)
#else
#define lwsl_client(...) do {} while(0)
#endif
 
#if (_LWS_ENABLED_LOGS & LLL_LATENCY)
#define lwsl_latency(...) _lws_log(LLL_LATENCY, __VA_ARGS__)
#else
#define lwsl_latency(...) do {} while(0)
#endif
 
#if (_LWS_ENABLED_LOGS & LLL_THREAD)
#define lwsl_thread(...) _lws_log(LLL_THREAD, __VA_ARGS__)
#else
#define lwsl_thread(...) do {} while(0)
#endif
 
#if (_LWS_ENABLED_LOGS & LLL_USER)
#define lwsl_user(...) _lws_log(LLL_USER, __VA_ARGS__)
#else
#define lwsl_user(...) do {} while(0)
#endif
 
 
#define lwsl_hexdump_err(...) lwsl_hexdump_level(LLL_ERR, __VA_ARGS__)
#define lwsl_hexdump_warn(...) lwsl_hexdump_level(LLL_WARN, __VA_ARGS__)
#define lwsl_hexdump_notice(...) lwsl_hexdump_level(LLL_NOTICE, __VA_ARGS__)
#define lwsl_hexdump_info(...) lwsl_hexdump_level(LLL_INFO, __VA_ARGS__)
#define lwsl_hexdump_debug(...) lwsl_hexdump_level(LLL_DEBUG, __VA_ARGS__)
 
LWS_VISIBLE LWS_EXTERN void
lwsl_hexdump_level(int level, const void *vbuf, size_t len);
 
LWS_VISIBLE LWS_EXTERN void
lwsl_hexdump(const void *buf, size_t len);
 
static LWS_INLINE int lws_is_be(void) {
        const int probe = ~0xff;
 
        return *(const char *)&probe;
}
 
LWS_VISIBLE LWS_EXTERN void
lws_set_log_level(int level,
                  void (*log_emit_function)(int level, const char *line));
 
LWS_VISIBLE LWS_EXTERN void
lwsl_emit_syslog(int level, const char *line);
 
LWS_VISIBLE LWS_EXTERN void
lwsl_emit_stderr(int level, const char *line);
 
LWS_VISIBLE LWS_EXTERN void
lwsl_emit_stderr_notimestamp(int level, const char *line);
 
LWS_VISIBLE LWS_EXTERN int
lwsl_visible(int level);
 
struct lws;
 
LWS_VISIBLE LWS_EXTERN const char *
lws_wsi_tag(struct lws *wsi);