upstream/mercurial-mirror Files · mercurial/cext/revlog.h

cg4: introduce protocol flag to signify the presence of sidedata...

cg4: introduce protocol flag to signify the presence of sidedata We need a way of signaling whether the current revision has sidedata or not, and re-using the revision flags would waste potential revlog flags and mix two normally independent layers. In this change, we add a single byte at the start of the ch4 delta header to set potential protocol flags. We also reclaim the revlog flag for sidedata, since it is no longer used, in its place now lives the (also experimental) copytracing flag. When generating deltas, apply the `CG_FLAG_SIDEDATA` flag if there is sidedata. When applying the deltas, if said flag is present, the next chunk contains the sidedata. Differential Revision: https://phab.mercurial-scm.org/D10343

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      /*

       revlog.h - efficient revlog parsing

       This software may be used and distributed according to the terms of

       the GNU General Public License, incorporated herein by reference.

      */

      #ifndef _HG_REVLOG_H_

      #define _HG_REVLOG_H_

      #include <Python.h>

      extern PyTypeObject HgRevlogIndex_Type;

      #define HgRevlogIndex_Check(op) PyObject_TypeCheck(op, &HgRevlogIndex_Type)

      #endif /* _HG_REVLOG_H_ */

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				/*
				revlog.h - efficient revlog parsing

				This software may be used and distributed according to the terms of
				the GNU General Public License, incorporated herein by reference.
				*/

				#ifndef _HG_REVLOG_H_
				#define _HG_REVLOG_H_

				#include <Python.h>

				extern PyTypeObject HgRevlogIndex_Type;

				#define HgRevlogIndex_Check(op) PyObject_TypeCheck(op, &HgRevlogIndex_Type)

				#endif /* _HG_REVLOG_H_ */