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

smartset: split generatorset classes to avoid cycle...

smartset: split generatorset classes to avoid cycle I uncovered a cycle manifesting in a memory leak by running `hgperfrevset '::tip'`. The cycle was due to generatorset.__init__ assigning a bound method to self.__contains__. Internet sleuthing revealed that assigning a bound method to an instance attribute always creates a cycle. This commit creates two new variants of generatorset for the special cases of ascending and descending generators. The special implementations of __contains__ have been extracted to these classes where they are defined as __contains__. generatorset now implements __new__ and changes the spawned type to one of the new classes if needed. Differential Revision: https://phab.mercurial-scm.org/D1780

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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_ */