Writing the reference counts when committing

Dependencies

• [2] E4MD6T3L Proofreading and commenting of this crate (massive bug fixes included)
• [3] YXKP4AIW New file locks, with multiple sets of free pages
• [4] WS4ZQM4R Debugging, tests, etc.
• [5] W2MIZD5B Single file databases + CRC for the root pages (checking the other pages makes everything very slow)
• [6] OP6SVMOD Resetting history
• [7] YWFYZNLZ Cleanup + inter-process concurrency
• [8] AOX2XQIS Actually, with the correct functions, Unsized pages are always slower than Sized pages (especially for writing)

Change contents

• replacement in sanakirja/src/environment/muttxn.rs at line 19
  [2.6897]→[3.80352:80367](∅→∅),[3.2774]→[3.80352:80367](∅→∅),[3.80352]→[3.80352:80367](∅→∅)
  − parent: T,
  [2.6897]

  [3.2551]
  + parent: Option<T>,
• replacement in sanakirja/src/environment/muttxn.rs at line 56
  [3.80987]→[3.80987:81041](∅→∅),[3.81041]→[2.7736:7888](∅→∅)
  − let env = self.env.borrow();

  − unsafe {

  − env.mut_txn_unlock().unwrap_or(());

  − env.roots[self.root].rw.unlock_exclusive();

  − env.unlock(self.root).unwrap_or(())
  [3.80987]

  [3.81129]
  + if self.parent.is_none() {

  + let env = self.env.borrow();

  + unsafe {

  + env.mut_txn_unlock().unwrap_or(());

  + env.roots[self.root].rw.unlock_exclusive();

  + env.unlock(self.root).unwrap_or(())

  + }
• replacement in sanakirja/src/environment/muttxn.rs at line 78
  [3.37356]→[3.81411:81511](∅→∅),[3.81411]→[3.81411:81511](∅→∅)
  − self.parent.length = self.length;

  − self.parent.free = self.free;

  − self.parent
  [3.37356]

  [3.81511]
  + let parent = self.parent.as_mut().unwrap();

  + parent.length = self.length;

  + parent.free = self.free;

  + parent.rc = self.rc.take();

  + parent
• replacement in sanakirja/src/environment/muttxn.rs at line 85
  [3.37415]→[3.81609:81773](∅→∅),[3.81609]→[3.81609:81773](∅→∅)
  − self.parent

  − .free_owned_pages

  − .extend(self.free_owned_pages.iter());

  − self.parent.free_pages.extend(self.free_pages.iter());
  [3.37415]

  [3.81773]
  + parent.free_owned_pages.extend(self.free_owned_pages.iter());

  + parent.free_pages.extend(self.free_pages.iter());
• replacement in sanakirja/src/environment/muttxn.rs at line 89
  [3.81852]→[3.81852:81894](∅→∅)
  − self.parent.roots[u] = *v
  [3.81852]

  [3.81894]
  + parent.roots[u] = *v
• replacement in sanakirja/src/environment/muttxn.rs at line 94
  [3.2918]→[3.2918:3032](∅→∅)
  − if self.parent.roots.get(n).is_none() {

  − self.parent.roots.resize(n + 1, 0u64)
  [3.2918]

  [3.3032]
  + if parent.roots.get(n).is_none() {

  + parent.roots.resize(n + 1, 0u64)
• replacement in sanakirja/src/environment/muttxn.rs at line 97
  [3.3050]→[3.3050:3091](∅→∅)
  − self.parent.roots[n] = r
  [3.3050]

  [3.3091]
  + parent.roots[n] = r
• replacement in sanakirja/src/environment/muttxn.rs at line 175
  [2.10496]→[3.83583:83611](∅→∅),[3.83583]→[3.83583:83611](∅→∅)
  − parent: (),
  [2.10496]

  [2.10497]
  + parent: None,
• edit in sanakirja/src/environment/muttxn.rs at line 279
  [2.14151]

  [2.14151]
  + if let Some(ref rc_db) = self.rc {

  + debug!("COMMIT: rc_db = 0x{:x}", rc_db.db);

  + globptr.rc_db = rc_db.db.to_le();

  + }