safelog.h

#include <redismodule.h>
#include <stdarg.h>

extern RedisModuleCtx *logCtx_g;

// FFS let's have contstants for the logging levels and not hard code them
#define RS_LOG_WARNING "warning"
#define ...


void RS_SafeLogInit(RedisModuleCtx *ctx) {
  // block the ctx
  // create a thread safe ctx from the BC
  // unblock
}

#define  RS_SafeLog(ctx, level, msg, ...) { \
  if (ctx) {
     RedisModule_Log(ctx, level, msg, __VA_ARGS__);
     if(!logCtx_g) RS_SafeLogInit(ctx);
  } else if (logCtx_g) {
     RedisModule_Log(logCtx_g, level, msg, __VA_ARGS__);
  } else {
    fprintf(stderr, level # msg, __VA_ARGS__);
  }
}