Ingo Weinhold 6075e354ab * Call module_init_post_boot_device() right after the boot volume has
been mounted, before anyone could try to load any modules from it.
  Also pass it a flag whether the boot volume is where the boot loader
  pre-loaded the modules from.
* module_init_post_boot_device() changes the pre-loaded module image
  paths to normalized boot volume paths, now. Got rid of the code in
  register_preloaded_module_image() which tried something like this.
* Changed module image ref counting. A referenced module has single
  reference to its image, which is released when the module becomes
  unreferenced.
* get_module() for a reference module will not try to re-get and re-set
  the module's image anymore. That could lead to a similar module (from
  different paths) being loaded at the same time. A module from a new
  file can only be loaded when the old one has been put completely.
* Simplified B_KEEP_ALIVE module handling a bit. When the module is
  initialized, we add another reference, which we'll never free. Thus
  the module remains loaded without special handling. Removed
  module_image::keep_loaded. A B_KEEP_ALIVE module remains referenced
  and thus its image remains referenced, too.
* Removed module::file, a cached path to the module's image. An
  optimization that wouldn't work with multiple root directories for
  modules (/boot/beos/..., /boot/common/...) or when module files were
  moved. get_module() does now always search the image file, when the
  module is still unreferenced. This should be a bit slower than before,
  but I didn't notice any difference in VMware at least. If it turns out
  to be a problem we could introduce a more intelligent cache that stays
  up to date by using node monitoring.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@27752 a95241bf-73f2-0310-859d-f6bbb57e9c96
2008-09-26 23:59:53 +00:00
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2008-09-11 22:45:17 +00:00