logger.h

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#ifndef NDNDPDK_CORE_LOGGER_H
#define NDNDPDK_CORE_LOGGER_H
 
#include "common.h"
 
#undef RTE_LOG_DP_LEVEL
#ifdef N_LOG_LEVEL
#define RTE_LOG_DP_LEVEL N_LOG_LEVEL
#else
#define RTE_LOG_DP_LEVEL RTE_LOG_DEBUG
#endif
 
#define N_LOG_INIT(module)                                                                         \
  static int RTE_LOGTYPE_NDN = -1;                                                                 \
  RTE_INIT(Logger_Init_##module) {                                                                 \
    RTE_LOGTYPE_NDN = rte_log_register_type_and_pick_level("NDN." #module, RTE_LOG_INFO);          \
  }                                                                                                \
  struct AllowTrailingSemicolon_
 
#define N_LOG(lvl, fmt, ...) RTE_LOG_DP(lvl, NDN, fmt "\n", ##__VA_ARGS__)
 
#define N_LOGV(...) N_LOG(DEBUG, __VA_ARGS__)
#define N_LOGD(...) N_LOG(INFO, __VA_ARGS__)
#define N_LOGI(...) N_LOG(NOTICE, __VA_ARGS__)
#define N_LOGW(...) N_LOG(WARNING, __VA_ARGS__)
#define N_LOGE(...) N_LOG(ERR, __VA_ARGS__)
 
#define N_LOG_ERROR(s) " ERROR={" s "}"
#define N_LOG_ERROR_BLANK N_LOG_ERROR("-")
#define N_LOG_ERROR_ERRNO N_LOG_ERROR("errno<%d>")
#define N_LOG_ERROR_STR N_LOG_ERROR("%s")
 
#define N_LOG_ENABLED(lvl)                                                                         \
  (RTE_LOG_DP_LEVEL >= RTE_LOG_##lvl && rte_log_get_level(RTE_LOGTYPE_NDN) >= (int)RTE_LOG_##lvl)
 
__attribute__((nonnull)) int
Logger_Dpdk_Init(FILE* output);
 
__attribute__((nonnull)) void
Logger_Spdk(int level, const char* restrict file, const int line, const char* restrict func,
            const char* restrict format, va_list args);
 
__attribute__((nonnull)) void
Logger_HexDump(const uint8_t* b, size_t count);
 
typedef struct DebugString {
  uint32_t pos;
  uint32_t cap;
  char buffer[8]; // actual capacity is DebugString_MaxCapacity
} DebugString;
 
__attribute__((returns_nonnull)) DebugString*
DebugString_Get(size_t capacity);
 
#define DebugString_Use(capacity) DebugString* myDebugString = DebugString_Get((capacity))
 
#define DebugString_Append(fn, ...)                                                                \
  do {                                                                                             \
    myDebugString->pos += fn(RTE_PTR_ADD(myDebugString->buffer, myDebugString->pos),               \
                             myDebugString->cap - myDebugString->pos, __VA_ARGS__);                \
  } while (false)
 
#define DebugString_Return()                                                                       \
  do {                                                                                             \
    NDNDPDK_ASSERT(myDebugString->pos < myDebugString->cap);                                       \
    return myDebugString->buffer;                                                                  \
  } while (false)
 
#endif // NDNDPDK_CORE_LOGGER_H