Version 1 (modified by plobsing, 5 years ago)

create page to describe changes in pmc_freeze_cleanup branch

The pmc_freeze_cleanup branch existed to clean up the cruft that had accumulated in the freeze/thaw/visit system. These changes are all backwards compatible, with incompatible changes delayed beyond the 2.0 deprecation boundary.

Notable changes include:

  • eliminate the IMAGE_IO struct, now emulated by the visit_info struct
  • pruning the visit_info struct
  • add more vtable-ish functions to visit_info struct. No more direct struct member access on this type should be required. This allows it to be easily changed to a PMC later.
  • create VISIT_PMC and VISIT_PMC_ATTR macros to facilitate most common visit operations
  • freezing/thawing images using Buffer* in stead of STRING*
  • eliminate EXTRA_IS_PROP_HASH. PMC's are now guaranteed to only be visited *once*
  • eliminate last vestiges of thawing constants