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

phases: avoid N² behavior in `advanceboundary`...

phases: avoid N² behavior in `advanceboundary` We allowed duplicated entries in the deque, which each entry could potentially insert all its ancestors. So advancing boundary for the full repository would mean each revision would walk all its ancestors, resulting in O(N²) iteration. For repository of any decent size, N² is quickly insane. We introduce a simple set to avoid this and get back to reasonable performance.

Augie Fackler - - Load All Authors

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      /*

       * Utility functions

       *

       * 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 UTIL_H_

      #define UTIL_H_

      #ifdef __GNUC__

      #define PRINTF_FORMAT_ __attribute__((format(printf, 1, 2)))

      #define UNUSED_ __attribute__((unused))

      #else

      #define PRINTF_FORMAT_

      #define UNUSED_

      #endif

      void abortmsg(const char *fmt, ...) PRINTF_FORMAT_;

      void abortmsgerrno(const char *fmt, ...) PRINTF_FORMAT_;

      void enablecolor(void);

      void enabledebugmsg(void);

      void debugmsg(const char *fmt, ...) PRINTF_FORMAT_;

      void fchdirx(int dirfd);

      void fsetcloexec(int fd);

      void *mallocx(size_t size);

      void *reallocx(void *ptr, size_t size);

      int runshellcmd(const char *cmd, const char *envp[], const char *cwd);

      #endif /* UTIL_H_ */

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				/*
				* Utility functions
				*
				* 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 UTIL_H_
				#define UTIL_H_

				#ifdef __GNUC__
				#define PRINTF_FORMAT_ __attribute__((format(printf, 1, 2)))
				#define UNUSED_ __attribute__((unused))
				#else
				#define PRINTF_FORMAT_
				#define UNUSED_
				#endif

				void abortmsg(const char *fmt, ...) PRINTF_FORMAT_;
				void abortmsgerrno(const char *fmt, ...) PRINTF_FORMAT_;

				void enablecolor(void);
				void enabledebugmsg(void);
				void debugmsg(const char *fmt, ...) PRINTF_FORMAT_;

				void fchdirx(int dirfd);
				void fsetcloexec(int fd);
				void *mallocx(size_t size);
				void reallocx(void ptr, size_t size);

				int runshellcmd(const char cmd, const char envp[], const char *cwd);

				#endif /* UTIL_H_ */