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6772 :: how to use .ini content in a GC-safe way?

• luntik2012 (orginal) [2020-09-04T14:59:50+02:00] view original

  # db_settings.nim
  
  import db_mysql
  import config
  
  let dbUsername* = configValue("Database", "username")
  let dbPassword* = configValue("Database", "password")
  let dbHost* = configValue("Database", "hostname")
  let installationName* = configValue("Database", "schema")
  
  proc connectToDb*(): DbConn =
    result = open(dbHost, dbUsername, dbPassword, installationName)
    discard result.setEncoding("utf8")
  
  Run

  I'm getting this warning:

  : 'connectToDb' is not GC-safe as it accesses 'installationName' which is a global using GC'ed memory [GcUnsafe2]
  Run

  (configValue just reads config.ini file)

  What is the right way to make it GC-safe without reading config.ini per connectToDb call?

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• Araq (orginal) [2020-09-05T10:02:10+02:00] view original

  Pass a config parameter to connectToDb and remove your global variables.

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