upstream/mercurial-mirror Files · contrib/chg/hgclient.h

revlog: add a small cache of unfiltered chunk...

revlog: add a small cache of unfiltered chunk This can provides a massive boost to the reading of multiple revision and the computation of a valid delta chain. This greatly help operation like `hg log --patch`, delta computation (helping pull/unbundle), linkrev adjustment (helping copy tracing). A first round of benchmark for `hg log --patch --limit 1000` shows improvement in the 10-20% range on "small" repository like pypy or mercurial and large improvements (about 33%) for more complex ones like netbeans and mozilla's. These speeds up are consistent with the improvement to `hg pull` (from a server sending poor deltas) I saw benchmarking this last year. Further benchmark will be run during the freeze. I added some configuration in the experimental space to be able to further test the effect of various tuning for now. This feature should fit well in the "usage/resource profile" configuration that we should land next cycle. When it does not provides a benefit the overhead of the cache seem to be around 2%, a small price for the big improvement. In addition I believe we could shave most of this overhead with a more efficent lru implementation.

Augie Fackler - - Load All Authors

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      /*

       * A command server client that uses Unix domain socket

       *

       * Copyright (c) 2011 Yuya Nishihara <yuya@tcha.org>

       *

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

       * GNU General Public License version 2 or any later version.

       */

      #ifndef HGCLIENT_H_

      #define HGCLIENT_H_

      #include <sys/types.h>

      struct hgclient_tag_;

      typedef struct hgclient_tag_ hgclient_t;

      hgclient_t *hgc_open(const char *sockname);

      void hgc_close(hgclient_t *hgc);

      pid_t hgc_peerpgid(const hgclient_t *hgc);

      pid_t hgc_peerpid(const hgclient_t *hgc);

      const char **hgc_validate(hgclient_t *hgc, const char *const args[],

                                size_t argsize);

      int hgc_runcommand(hgclient_t *hgc, const char *const args[], size_t argsize);

      void hgc_attachio(hgclient_t *hgc);

      void hgc_setenv(hgclient_t *hgc, const char *const envp[]);

      #endif /* HGCLIENT_H_ */

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				/*
				* A command server client that uses Unix domain socket
				*
				* Copyright (c) 2011 Yuya Nishihara <yuya@tcha.org>
				*
				* This software may be used and distributed according to the terms of the
				* GNU General Public License version 2 or any later version.
				*/

				#ifndef HGCLIENT_H_
				#define HGCLIENT_H_

				#include <sys/types.h>

				struct hgclient_tag_;
				typedef struct hgclient_tag_ hgclient_t;

				hgclient_t hgc_open(const char sockname);
				void hgc_close(hgclient_t *hgc);

				pid_t hgc_peerpgid(const hgclient_t *hgc);
				pid_t hgc_peerpid(const hgclient_t *hgc);

				const char *hgc_validate(hgclient_t hgc, const char *const args[],
				size_t argsize);
				int hgc_runcommand(hgclient_t hgc, const char const args[], size_t argsize);
				void hgc_attachio(hgclient_t *hgc);
				void hgc_setenv(hgclient_t hgc, const char const envp[]);

				#endif /* HGCLIENT_H_ */