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

workingctx: add a way for extensions to run code at status fixup time...

workingctx: add a way for extensions to run code at status fixup time Some extensions like fsmonitor need to run code after dirstate.status is called, but while the wlock is held. The extensions could grab the wlock again, but that has its own peculiar race issues. For example, fsmonitor would not like its state to be written out if the dirstate has changed underneath (see issue5581 for what can go wrong in that sort of case). To protect against these sorts of issues, allow extensions to declare that they would like to run some code to run at fixup time. fsmonitor will switch to using this in the next patch in the series.

Yuya Nishihara - - Load All Authors

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      #ifndef _HG_MPATCH_H_

      #define _HG_MPATCH_H_

      #define MPATCH_ERR_NO_MEM -3

      #define MPATCH_ERR_CANNOT_BE_DECODED -2

      #define MPATCH_ERR_INVALID_PATCH -1

      struct mpatch_frag {

      	int start, end, len;

      	const char *data;

      };

      struct mpatch_flist {

      	struct mpatch_frag *base, *head, *tail;

      };

      int mpatch_decode(const char *bin, ssize_t len, struct mpatch_flist** res);

      ssize_t mpatch_calcsize(ssize_t len, struct mpatch_flist *l);

      void mpatch_lfree(struct mpatch_flist *a);

      int mpatch_apply(char *buf, const char *orig, ssize_t len,

      	struct mpatch_flist *l);

      struct mpatch_flist *mpatch_fold(void *bins,

      	struct mpatch_flist* (*get_next_item)(void*, ssize_t),

      	ssize_t start, ssize_t end);

      #endif

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				#ifndef _HG_MPATCH_H_
				#define _HG_MPATCH_H_

				#define MPATCH_ERR_NO_MEM -3
				#define MPATCH_ERR_CANNOT_BE_DECODED -2
				#define MPATCH_ERR_INVALID_PATCH -1

				struct mpatch_frag {
				int start, end, len;
				const char *data;
				};

				struct mpatch_flist {
				struct mpatch_frag base, head, *tail;
				};

				int mpatch_decode(const char bin, ssize_t len, struct mpatch_flist* res);
				ssize_t mpatch_calcsize(ssize_t len, struct mpatch_flist *l);
				void mpatch_lfree(struct mpatch_flist *a);
				int mpatch_apply(char buf, const char orig, ssize_t len,
				struct mpatch_flist *l);
				struct mpatch_flist mpatch_fold(void bins,
				struct mpatch_flist* (get_next_item)(void, ssize_t),
				ssize_t start, ssize_t end);

				#endif