upstream/mercurial-mirror Files · mercurial/bdiff.h

phases: large rewrite on retract boundary...

phases: large rewrite on retract boundary The new code is still pure Python, so we still have room to going significantly faster. However its complexity of the complex part is `O(|[min_new_draft, tip]|)` instead of `O(|[min_draft, tip]|` which should help tremendously one repository with old draft (like mercurial-devel or mozilla-try). This is especially useful as the most common "retract boundary" operation happens when we commit/rewrite new drafts or when we push new draft to a non-publishing server. In this case, the smallest new_revs is very close to the tip and there is very few work to do. A few smaller optimisation could be done for these cases and will be introduced in later changesets. We still have iterate over large sets of roots, but this is already a great improvement for a very small amount of work. We gather information on the affected changeset as we go as we can put it to use in the next changesets. This extra data collection might slowdown the `register_new` case a bit, however for register_new, it should not really matters. The set of new nodes is either small, so the impact is negligible, or the set of new nodes is large, and the amount of work to do to had them will dominate the overhead the collecting information in `changed_revs`. As this new code compute the changes on the fly, it unlock other interesting improvement to be done in later changeset.

David Demelier - - Load All Authors

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        David Demelier
    
hg: remove reserved identifiers...

              r49095
            
      #ifndef HG_BDIFF_H

      #define HG_BDIFF_H

        Maciej Fijalkowski
    
bdiff: split bdiff into cpy-aware and cpy-agnostic part

              r29541
            
        Yuya Nishihara
    
bdiff: include compat.h in header to define ssize_t...

              r34653
            
      #include "compat.h"

        Maciej Fijalkowski
    
bdiff: split bdiff into cpy-aware and cpy-agnostic part

              r29541
            
      struct bdiff_line {

      	int hash, n, e;

      	ssize_t len;

      	const char *l;

      };

      struct bdiff_hunk;

      struct bdiff_hunk {

      	int a1, a2, b1, b2;

      	struct bdiff_hunk *next;

      };

      int bdiff_splitlines(const char *a, ssize_t len, struct bdiff_line **lr);

      int bdiff_diff(struct bdiff_line *a, int an, struct bdiff_line *b, int bn,

        Augie Fackler
    
bdiff: format header file with clang-format...

              r34628
            
                     struct bdiff_hunk *base);

        Maciej Fijalkowski
    
bdiff: split bdiff into cpy-aware and cpy-agnostic part

              r29541
            
      void bdiff_freehunks(struct bdiff_hunk *l);

      #endif

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David Demelier hg: remove reserved identifiers...	r49095	#ifndef HG_BDIFF_H
		#define HG_BDIFF_H
Maciej Fijalkowski bdiff: split bdiff into cpy-aware and cpy-agnostic part	r29541
Yuya Nishihara bdiff: include compat.h in header to define ssize_t...	r34653	#include "compat.h"

Maciej Fijalkowski bdiff: split bdiff into cpy-aware and cpy-agnostic part	r29541	struct bdiff_line {
		int hash, n, e;
		ssize_t len;
		const char *l;
		};

		struct bdiff_hunk;
		struct bdiff_hunk {
		int a1, a2, b1, b2;
		struct bdiff_hunk *next;
		};

		int bdiff_splitlines(const char a, ssize_t len, struct bdiff_line *lr);
		int bdiff_diff(struct bdiff_line a, int an, struct bdiff_line b, int bn,
Augie Fackler bdiff: format header file with clang-format...	r34628	struct bdiff_hunk *base);
Maciej Fijalkowski bdiff: split bdiff into cpy-aware and cpy-agnostic part	r29541	void bdiff_freehunks(struct bdiff_hunk *l);

		#endif