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| author | Jason Evans <jasone@canonware.com> | 2010-08-09 17:17:34 -0500 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2010-08-14 19:35:37 -0700 |
| commit | 951f316470acc7c785c460a4e40735b22822349f (patch) | |
| tree | 8cc846b9eead64502e00fc4064d5decfa1897320 /Makefile | |
| parent | 4709455db3891f6cad9a96a574296b4926f70cbe (diff) | |
| download | git-951f316470acc7c785c460a4e40735b22822349f.tar.gz git-951f316470acc7c785c460a4e40735b22822349f.tar.xz | |
Add treap implementation
Provide macros to generate a type-specific treap implementation and
various functions to operate on it. It uses obj_pool.h to store memory
nodes in a treap. Previously committed nodes are never removed from
the pool; after any *_commit operation, it is assumed (correctly, in
the case of svn-fast-export) that someone else must care about them.
Treaps provide a memory-efficient binary search tree structure.
Insertion/deletion/search are about as about as fast in the average
case as red-black trees and the chances of worst-case behavior are
vanishingly small, thanks to (pseudo-)randomness. The bad worst-case
behavior is a small price to pay, given that treaps are much simpler
to implement.
>From http://www.canonware.com/download/trp/trp_hash/trp.h
[db: Altered to reference nodes by offset from a common base pointer]
[db: Bob Jenkins' hashing implementation dropped for Knuth's]
[db: Methods unnecessary for search and insert dropped]
[rr: Squelched compiler warnings]
[db: Added support for immutable treap nodes]
[jn: Reintroduced treap_nsearch(); with tests]
Signed-off-by: David Barr <david.barr@cordelta.com>
Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 3 |
1 files changed, 2 insertions, 1 deletions
@@ -415,6 +415,7 @@ TEST_PROGRAMS_NEED_X += test-path-utils TEST_PROGRAMS_NEED_X += test-run-command TEST_PROGRAMS_NEED_X += test-sha1 TEST_PROGRAMS_NEED_X += test-sigchain +TEST_PROGRAMS_NEED_X += test-treap TEST_PROGRAMS_NEED_X += test-index-version TEST_PROGRAMS = $(patsubst %,%$X,$(TEST_PROGRAMS_NEED_X)) @@ -1866,7 +1867,7 @@ xdiff-interface.o $(XDIFF_OBJS): \ xdiff/xutils.h xdiff/xprepare.h xdiff/xdiffi.h xdiff/xemit.h $(VCSSVN_OBJS): \ - vcs-svn/obj_pool.h + vcs-svn/obj_pool.h vcs-svn/trp.h endif exec_cmd.s exec_cmd.o: EXTRA_CPPFLAGS = \ |