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Rev Age Author Path Log message Diff
1549 6508 d 3 h vana /kernel/trunk/generic/src/adt/ Bitmap functions patch  
1483 6510 d 4 h jermar /kernel/trunk/generic/src/ Implement recursive function for deallocating the whole B+tree.
Make use of this function in address space management.
 
1337 6527 d 3 h jermar /kernel/trunk/generic/src/adt/ Remove a misleading comment.  
1262 6541 d 23 h jermar /kernel/trunk/generic/src/adt/ Fix a bug caused by an unsigned subtraction of bigger value from smaller value in bitmap implementation.
Fix wrong calculation of unaligned leading bits in bitmap implementation.
 
1248 6545 d 1 h jermar /kernel/trunk/ Add some @file doxygen comments and improve already existing comments.  
1221 6549 d 19 h decky /kernel/trunk/ printf-related and other code cleanup  
1200 6555 d 3 h jermar /kernel/trunk/ Add bitmap ADT.  
1196 6556 d 5 h cejka /kernel/trunk/ Printf ported back from uspace to kernel.
Printf calls changed to match new conventions.
 
1177 6560 d 6 h jermar /kernel/trunk/generic/ Modify B+tree node key width to be 64-bit wide on all platforms.  
1164 6563 d 2 h jermar /kernel/trunk/generic/ Switch B+tree node allocation from malloc() to a dedicated slab - btree_node_slab.  
1154 6567 d 0 h jermar /kernel/trunk/generic/src/adt/ Fix critical bug in hash table initialization.
Only half of the table was actually allocated and initialized.
 
1150 6568 d 9 h jermar /kernel/trunk/generic/ Rename btree_node_left_sibling() to btree_leaf_node_left_neighbour()
and btree_node_right_sibling() to btree_leaf_node_right_neighbour()
as the left and right neighbours of a node needn't be its siblings.
 
1148 6568 d 20 h jermar /kernel/trunk/generic/src/ s/B+-tree/B+tree/  
1147 6568 d 20 h jermar /kernel/trunk/generic/ Deploy B+tree in address space area management.
Change as_remap() to check for conflicts with other address space areas only when the area in question grows.
 
1144 6571 d 0 h jermar /kernel/trunk/ Completed B+-tree support.
Enable btree_remove().
Reorder some static functions and group them together.
Fix order of nodes in the leaf_head list.
 
1142 6571 d 7 h jermar /kernel/trunk/ Update B+-tree code.
The code is there, btree_remove() has not been tested yet.
(Fixes, if any, are to come later today.)
 
1140 6573 d 0 h jermar /kernel/trunk/generic/ Change B+-tree from 2-3-4 tree to 2-3-4-5 tree by adding space for the fourth key.
This should make key removal easier.
 
1136 6576 d 23 h jermar /kernel/trunk/generic/src/adt/ Try to avoid splitting full B+-tree nodes by trying left or right rotation first.
(This improved memory consumption of this algorithm by some 40% - meassured on 101-item set).
 
1134 6578 d 2 h jermar /kernel/trunk/generic/src/adt/ Change B+-tree to:
- store lesser keys in a key's left subtree
- propagate the bigger of medians (if there are two medians) when splitting a node
 
1121 6579 d 21 h jermar /kernel/trunk/ Small textual changes.  

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