Diff: mbed-client/nanostack-libservice/mbed-client-libservice/ns_trace.h

Revision:

0:f7c60d3e7b8a

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-client/nanostack-libservice/mbed-client-libservice/ns_trace.h	Wed May 18 19:06:32 2016 +0000
@@ -0,0 +1,320 @@
+/*
+ * Copyright (c) 2015 ARM Limited. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ * 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.
+ */
+
+/**
+ * \file ns_trace.h
+ * Trace interface for NanoStack library as well as application.
+ * This file provide simple but flexible way to handle software traces.
+ * Trace library are abstract layer, which use stdout (printf) by default, 
+ * but outputs can be easily redirect to custom function, for example to 
+ * store traces to memory or other interfaces.
+ *
+ *  usage example:
+ * \code(main.c:)
+ *      #include "ns_trace.h"
+ *      #define TRACE_GROUP  "main"
+ *
+ *      int main(void){
+ *          trace_init();   // initialize trace library
+ *          tr_debug("this is debug msg");  //print debug message to stdout: "[DBG]
+ *          tr_err("this is error msg");
+ *          tr_warn("this is warning msg");
+ *          tr_info("this is info msg");
+ *          return 0;
+ *      }
+ * \endcode
+ *
+ */
+#ifndef NS_TRACE_H_
+#define NS_TRACE_H_
+#include "ns_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** 3 upper bits are trace modes related,
+    and 5 lower bits are trace level configuration */
+
+/** Config mask */
+#define TRACE_MASK_CONFIG         0xE0
+/** Trace level mask */
+#define TRACE_MASK_LEVEL          0x1F
+
+/** plain trace data instead of "headers" */
+#define TRACE_MODE_PLAIN          0x80
+/** color mode */
+#define TRACE_MODE_COLOR          0x40
+/** Use print CR before trace line */
+#define TRACE_CARRIAGE_RETURN     0x20
+
+/** used to activate all trace levels */
+#define TRACE_ACTIVE_LEVEL_ALL    0x1F
+/** print all traces same as above */
+#define TRACE_ACTIVE_LEVEL_DEBUG  0x1f
+/** print info,warn and error traces */
+#define TRACE_ACTIVE_LEVEL_INFO   0x0f
+/** print warn and error traces */
+#define TRACE_ACTIVE_LEVEL_WARN   0x07
+/** print only error trace */
+#define TRACE_ACTIVE_LEVEL_ERROR  0x03
+/** print only cmd line data */
+#define TRACE_ACTIVE_LEVEL_CMD    0x01
+/** trace nothing  */
+#define TRACE_ACTIVE_LEVEL_NONE   0x00
+
+/** this print is some deep information for debug purpose */
+#define TRACE_LEVEL_DEBUG         0x10
+/** Info print, for general purpose prints */
+#define TRACE_LEVEL_INFO          0x08
+/** warning prints, which shouldn't causes any huge problems */
+#define TRACE_LEVEL_WARN          0x04
+/** Error prints, which causes probably problems, e.g. out of mem. */
+#define TRACE_LEVEL_ERROR         0x02
+/** special level for cmdline. Behaviours like "plain mode" */
+#define TRACE_LEVEL_CMD           0x01
+
+//usage macros:
+#define tr_info(...)            tracef(TRACE_LEVEL_INFO,    TRACE_GROUP, __VA_ARGS__)   //!< Print info message
+#define tr_debug(...)           tracef(TRACE_LEVEL_DEBUG,   TRACE_GROUP, __VA_ARGS__)   //!< Print debug message
+#define tr_warning(...)         tracef(TRACE_LEVEL_WARN,    TRACE_GROUP, __VA_ARGS__)   //!< Print warning message
+#define tr_warn(...)            tracef(TRACE_LEVEL_WARN,    TRACE_GROUP, __VA_ARGS__)   //!< Alternative warning message
+#define tr_error(...)           tracef(TRACE_LEVEL_ERROR,   TRACE_GROUP, __VA_ARGS__)   //!< Print Error Message
+#define tr_err(...)             tracef(TRACE_LEVEL_ERROR,   TRACE_GROUP, __VA_ARGS__)   //!< Alternative error message
+#define tr_cmdline(...)         tracef(TRACE_LEVEL_CMD,     TRACE_GROUP, __VA_ARGS__)   //!< Special print for cmdline. See more from TRACE_LEVEL_CMD -level
+
+/** Possible to skip all traces in compile time */
+#if defined(FEA_TRACE_SUPPORT) || defined(HAVE_DEBUG) || (defined(YOTTA_CFG) && !defined(NDEBUG)) /*backward compatible*/
+
+#if defined  __GNUC__ || defined __CC_ARM
+/**
+ * Initialize trace functionality. This method must be called from application process.
+ * @return 0 when all success, otherwise non zero
+ */
+int trace_init( void );
+/**
+ * Free trace memory. This method must be called from application process.
+ */
+void trace_free( void );
+/**
+ *  Set trace configurations
+ *  Possible parameters:
+ *
+ *   TRACE_MODE_COLOR
+ *   TRACE_MODE_PLAIN (this exclude color mode)
+ *   TRACE_CARRIAGE_RETURN (print CR before trace line)
+ *
+ *   TRACE_ACTIVE_LEVEL_ALL - to activate all trace levels
+ *   or TRACE_ACTIVE_LEVEL_DEBUG (alternative)
+ *   TRACE_ACTIVE_LEVEL_INFO
+ *   TRACE_ACTIVE_LEVEL_WARN
+ *   TRACE_ACTIVE_LEVEL_ERROR
+ *   TRACE_ACTIVE_LEVEL_CMD
+ *   TRACE_LEVEL_NONE - to deactivate all traces
+ *
+ * @param config  Byte size Bit-mask. Bits are descripted above.
+ * usage e.g.
+ * @code
+ *  set_trace_config( TRACE_ACTIVE_LEVEL_ALL|TRACE_MODE_COLOR );
+ * @endcode
+ */
+void set_trace_config(uint8_t config);
+/** get trace configurations 
+ * @return trace configuration byte
+ */
+uint8_t get_trace_config(void);
+/**
+ * Set trace prefix function
+ * pref_f -function return string with null terminated
+ * Can be used for e.g. time string
+ * e.g.
+ *   char* trace_time(){ return "rtc-time-in-string"; }
+ *   set_trace_prefix_function( &trace_time );
+ */
+void set_trace_prefix_function( char* (*pref_f)(size_t) );
+/**
+ * Set trace suffix function
+ * suffix -function return string with null terminated
+ * Can be used for e.g. time string
+ * e.g.
+ *   char* trace_suffix(){ return " END"; }
+ *   set_trace_suffix_function( &trace_suffix );
+ */
+void set_trace_suffix_function(char* (*suffix_f)(void) );
+/**
+ * Set trace print function
+ * By default, trace module print using printf() function,
+ * but with this you can write own print function,
+ * for e.g. to other IO device.
+ */
+void set_trace_print_function( void (*print_f)(const char*) );
+/**
+ * Set trace print function for tr_cmdline()
+ */
+void set_trace_cmdprint_function( void (*printf)(const char*) );
+/**
+ * When trace group contains text in filters,
+ * trace print will be ignored.
+ * e.g.: 
+ *  set_trace_exclude_filters("mygr");
+ *  tracef(TRACE_ACTIVE_LEVEL_DEBUG, "ougr", "This is not printed");
+ */
+void set_trace_exclude_filters(char* filters);
+/** get trace exclude filters
+ */
+const char* get_trace_exclude_filters(void);
+/**
+ * When trace group contains text in filter,
+ * trace will be printed.
+ * e.g.:
+ *  set_trace_include_filters("mygr");
+ *  tracef(TRACE_ACTIVE_LEVEL_DEBUG, "mygr", "Hi There");
+ *  tracef(TRACE_ACTIVE_LEVEL_DEBUG, "grp2", "This is not printed");
+ */
+void set_trace_include_filters(char* filters);
+/** get trace include filters
+ */
+const char* get_trace_include_filters(void);
+/**
+ * General trace function
+ * This should be used every time when user want to print out something important thing
+ * Usage e.g.
+ *   tracef( TRACE_LEVEL_INFO, "mygr", "Hello world!");
+ *
+ * @param dlevel debug level
+ * @param grp    trace group
+ * @param fmt    trace format (like printf)
+ * @param ...    variable arguments related to fmt
+ */
+void tracef(uint8_t dlevel, const char* grp, const char *fmt, ...) __attribute__ ((__format__(__printf__, 3, 4)));
+/**
+ *  Get last trace from buffer
+ */
+const char* trace_last(void);
+/**
+ * tracef helping function for convert ipv6
+ * table to human readable string.
+ * usage e.g.
+ * char ipv6[16] = {...}; // ! array length is 16 bytes !
+ * tracef(TRACE_LEVEL_INFO, "mygr", "ipv6 addr: %s", trace_ipv6(ipv6));
+ *
+ * @param add_ptr  IPv6 Address pointer
+ * @return temporary buffer where ipv6 is in string format
+ */
+char* trace_ipv6(const void *addr_ptr);
+/**
+ * tracef helping function for print ipv6 prefix
+ * usage e.g.
+ * char ipv6[16] = {...}; // ! array length is 16 bytes !
+ * tracef(TRACE_LEVEL_INFO, "mygr", "ipv6 addr: %s", trace_ipv6_prefix(ipv6, 4));
+ *
+ * @param prefix        IPv6 Address pointer
+ * @param prefix_len    prefix length
+ * @return temporary buffer where ipv6 is in string format
+ */
+char* trace_ipv6_prefix(const uint8_t *prefix, uint8_t prefix_len);
+/**
+ * tracef helping function for convert hex-array to string.
+ * usage e.g.
+ *  char myarr[] = {0x10, 0x20};
+ *  tracef(TRACE_LEVEL_INFO, "mygr", "arr: %s", trace_array(myarr, 2));
+ *
+ * @param buf  hex array pointer
+ * @param len  buffer length
+ * @return temporary buffer where string copied
+ */
+char* trace_array(const uint8_t* buf, uint16_t len);
+
+
+/*
+ * obsolete - only because of backward compatible reason
+ * As soon as all these functions are replaced by new tracef() function, these can be removed.
+ */
+
+/** obsolete function */
+void debugf(const char *fmt, ...) __attribute__ ((__format__(__printf__, 1, 2)));   //!< obsolete function
+void debug(const char *s);                                                          //!< obsolete function
+void debug_put(char c);                                                             //!< obsolete function
+void debug_hex(uint8_t x);                                                          //!< obsolete function
+void debug_int(int i);                                                              //!< obsolete function
+void printf_array(const void *buf, uint16_t len);                                   //!< obsolete function
+void printf_string(const void *buf, uint16_t len);                                  //!< obsolete function
+void printf_ipv6_address(const void *addr);                                         //!< obsolete function
+
+#else //__GNUC__ || __CC_ARM
+int trace_init( void );
+void trace_free( void );
+void set_trace_config(uint8_t config);
+void set_trace_prefix_function( char* (*pref_f)(size_t) );
+void set_trace_print_function( void (*print_f)(const char*) );
+void set_trace_cmdprint_function( void (*printf)(const char*) );
+void set_trace_exclude_filters(char* filters);
+const char* get_trace_exclude_filters(void);
+void set_trace_include_filters(char* filters);
+const char* get_trace_include_filters(void);
+void tracef(uint8_t dlevel, const char* grp, const char *fmt, ...);
+char* trace_ipv6(const void *addr_ptr);
+char* trace_array(const uint8_t* buf, uint16_t len);
+char* trace_ipv6_prefix(const uint8_t *prefix, uint8_t prefix_len);
+
+//obsolete functions:
+void debugf(const char *fmt, ...);
+void debug(const char *s);
+void debug_put(char c);
+void debug_hex(uint8_t x);
+void debug_int(int i);
+void printf_array(const void *buf, uint16_t len);
+void printf_string(const void *buf, uint16_t len);
+void printf_ipv6_address(const void *addr);
+
+#endif
+
+
+#else /*FEA_TRACE_SUPPORT*/
+
+// trace functionality not supported
+#define trace_init(...)                ((int) 0)
+#define trace_free(...)                ((void) 0)
+#define set_trace_config(...)          ((void) 0)
+#define set_trace_prefix_function(...) ((void) 0)
+#define set_trace_print_function(...)  ((void) 0)
+#define set_trace_cmdprint_function(...)  ((void) 0)
+#define set_trace_exclude_filters(...) ((void) 0)
+#define set_trace_include_filters(...) ((void) 0)
+#define get_trace_exclude_filters(...) ((const char*) 0)
+#define get_trace_include_filters(...) ((const char*) 0)
+
+#define tracef(...)                    ((void) 0)
+#define trace_ipv6(...)                ((char*) 0)
+#define trace_array(...)               ((char*) 0)
+#define trace_ipv6_prefix(...)         ((char*) 0)
+
+//obsolete
+#define debugf(...)                    ((void) 0)
+#define debug(s)                       ((void) 0)
+#define debug_put(c)                   ((void) 0)
+#define debug_hex(x)                   ((void) 0)
+#define debug_int(i)                   ((void) 0)
+#define printf_array(buf, len)         ((void) 0)
+#define printf_string(buf, len)        ((void) 0)
+#define printf_ipv6_address(addr)      ((void) 0)
+
+#endif /*FEA_TRACE_SUPPORT*/
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* NS_TRACE_H_ */