include/osmocore/debug.h

   1 #ifndef _OSMOCORE_DEBUG_H
   2 #define _OSMOCORE_DEBUG_H
   3
   4 #include <stdio.h>
   5 #include <stdint.h>
   6 #include <osmocore/linuxlist.h>
   7
   8 #define DEBUG_MAX_CATEGORY      32
   9 #define DEBUG_MAX_CTX           8
  10 #define DEBUG_MAX_FILTERS       8
  11
  12 #define DEBUG
  13
  14 #ifdef DEBUG
  15 #define DEBUGP(ss, fmt, args...) debugp(ss, __FILE__, __LINE__, 0, fmt, ## args)
  16 #define DEBUGPC(ss, fmt, args...) debugp(ss, __FILE__, __LINE__, 1, fmt, ## args)
  17 #else
  18 #define DEBUGP(xss, fmt, args...)
  19 #define DEBUGPC(ss, fmt, args...)
  20 #endif
  21
  22 #define static_assert(exp, name) typedef int dummy##name [(exp) ? 1 : -1];
  23
  24 char *hexdump(const unsigned char *buf, int len);
  25 void debugp(unsigned int subsys, char *file, int line, int cont, const char *format, ...) __attribute__ ((format (printf, 5, 6)));
  26
  27 /* new logging interface */
  28 #define LOGP(ss, level, fmt, args...) \
  29         debugp2(ss, level, __FILE__, __LINE__, 0, fmt, ##args)
  30 #define LOGPC(ss, level, fmt, args...) \
  31         debugp2(ss, level, __FILE__, __LINE__, 1, fmt, ##args)
  32
  33 /* different levels */
  34 #define LOGL_DEBUG      1       /* debugging information */
  35 #define LOGL_INFO       3
  36 #define LOGL_NOTICE     5       /* abnormal/unexpected condition */
  37 #define LOGL_ERROR      7       /* error condition, requires user action */
  38 #define LOGL_FATAL      8       /* fatal, program aborted */
  39
  40 #define DEBUG_FILTER_ALL        0x0001
  41
  42 struct debug_category {
  43         uint8_t loglevel;
  44         uint8_t enabled;
  45 };
  46
  47 struct debug_info_cat {
  48         const char *name;
  49         const char *color;
  50         const char *description;
  51         uint8_t loglevel;
  52         uint8_t enabled;
  53 };
  54
  55 /* debug context information, passed to filter */
  56 struct debug_context {
  57         void *ctx[DEBUG_MAX_CTX+1];
  58 };
  59
  60 struct debug_target;
  61
  62 typedef int debug_filter(const struct debug_context *ctx,
  63                          struct debug_target *target);
  64
  65 struct debug_info {
  66         /* filter callback function */
  67         debug_filter *filter_fn;
  68
  69         /* per-category information */
  70         const struct debug_info_cat *cat;
  71         unsigned int num_cat;
  72 };
  73
  74 struct debug_target {
  75         struct llist_head entry;
  76
  77         int filter_map;
  78         void *filter_data[DEBUG_MAX_FILTERS+1];
  79
  80         struct debug_category categories[DEBUG_MAX_CATEGORY+1];
  81         uint8_t loglevel;
  82         int use_color:1;
  83         int print_timestamp:1;
  84
  85         union {
  86                 struct {
  87                         FILE *out;
  88                 } tgt_stdout;
  89
  90                 struct {
  91                         int priority;
  92                 } tgt_syslog;
  93
  94                 struct {
  95                         void *vty;
  96                 } tgt_vty;
  97         };
  98
  99         void (*output) (struct debug_target *target, const char *string);
 100 };
 101
 102 /* use the above macros */
 103 void debugp2(unsigned int subsys, unsigned int level, char *file,
 104              int line, int cont, const char *format, ...)
 105                                 __attribute__ ((format (printf, 6, 7)));
 106 void debug_init(const struct debug_info *cat);
 107
 108 /* context management */
 109 void debug_reset_context(void);
 110 int debug_set_context(uint8_t ctx, void *value);
 111
 112 /* filter on the targets */
 113 void debug_set_all_filter(struct debug_target *target, int);
 114
 115 void debug_set_use_color(struct debug_target *target, int);
 116 void debug_set_print_timestamp(struct debug_target *target, int);
 117 void debug_set_log_level(struct debug_target *target, int log_level);
 118 void debug_parse_category_mask(struct debug_target *target, const char* mask);
 119 int debug_parse_level(const char *lvl);
 120 int debug_parse_category(const char *category);
 121 void debug_set_category_filter(struct debug_target *target, int category,
 122                                int enable, int level);
 123
 124 /* management of the targets */
 125 struct debug_target *debug_target_create(void);
 126 struct debug_target *debug_target_create_stderr(void);
 127 void debug_add_target(struct debug_target *target);
 128 void debug_del_target(struct debug_target *target);
 129
 130 #endif /* _OSMOCORE_DEBUG_H */