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

wireprotov2: allow multiple fields to follow revision maps...

wireprotov2: allow multiple fields to follow revision maps The *data wire protocol commands emit a series of CBOR values. Because revision/delta data may be large, their data is emitted outside the map as a top-level bytestring value. Before this commit, we'd emit a single optional bytestring value after the revision descriptor map. This got the job done. But it was limiting in that we could only send a single field. And, it required the consumer to know that the presence of a key in the map implied the existence of a following bytestring value. This commit changes the encoding strategy so top-level bytestring values in the stream are explicitly denoted in a "fieldsfollowing" key. This key contains an array defining what fields that follow and the expected size of each field. By defining things this way, we can easily send N bytestring values without any ambiguity about their order. In addition, clients only need to know how to parse ``fieldsfollowing`` to know if extra values are present. Because this breaks backwards compatibility, we've bumped the version number of the wire protocol version 2 API endpoint. Differential Revision: https://phab.mercurial-scm.org/D4620

Augie Fackler - - Load All Authors

File last commit:

r35977:9724f549 default


                r39839:d059cb66

default

Download file

             util.h
        
                    35 lines
            
             | 855 B
            
                | text/x-c
            
             |
                CLexer
            
             / contrib / chg / util.h
          
                    History
                
                 |
                  Source
                 | Raw
                 |Copy content
                 |Copy permalink

        Yuya Nishihara
    
chg: import frontend sources...

              r28060
            
      /*

       * 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)))

        Yuya Nishihara
    
chg: silence warning of unused parameter 'sig'

              r29440
            
      #define UNUSED_ __attribute__((unused))

        Jun Wu
    
chg: define PRINTF_FORMAT_ for non gnu C compiler...

              r28604
            
      #else

      #define PRINTF_FORMAT_

        Yuya Nishihara
    
chg: silence warning of unused parameter 'sig'

              r29440
            
      #define UNUSED_

        Yuya Nishihara
    
chg: import frontend sources...

              r28060
            
      #endif

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

        Jun Wu
    
chg: add util function abortmsgerrno to print error with errno...

              r28788
            
      void abortmsgerrno(const char *fmt, ...) PRINTF_FORMAT_;

        Yuya Nishihara
    
chg: import frontend sources...

              r28060
            
        Jun Wu
    
chg: use color in debug/error messages conditionally...

              r28787
            
      void enablecolor(void);

        Yuya Nishihara
    
chg: import frontend sources...

              r28060
            
      void enabledebugmsg(void);

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

        Jun Wu
    
chg: add fchdirx as a utility function...

              r28854
            
      void fchdirx(int dirfd);

        Jun Wu
    
chg: extract the logic of setting FD_CLOEXEC to a utility function...

              r28855
            
      void fsetcloexec(int fd);

        Jun Wu
    
chg: add utility functions mallocx, reallocx...

              r28165
            
      void *mallocx(size_t size);

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

        Yuya Nishihara
    
chg: import frontend sources...

              r28060
            
      int runshellcmd(const char *cmd, const char *envp[], const char *cwd);

        Augie Fackler
    
chg: enable clang-format on all .c and .h files...

              r35977
            
      #endif /* UTIL_H_ */

	Site-wide shortcuts
/	Use quick search box
g h	Goto home page
g g	Goto my private gists page
g G	Goto my public gists page
g 0-9	Goto bookmarked items from 0-9
n r	New repository page
n g	New gist page

	Repositories
g s	Goto summary page
g c	Goto changelog page
g f	Goto files page
g F	Goto files page with file search activated
g p	Goto pull requests page
g o	Goto repository settings
g O	Goto repository access permissions settings
t s	Toggle sidebar on some pages

Yuya Nishihara chg: import frontend sources...	r28060	/*
		* 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)))
Yuya Nishihara chg: silence warning of unused parameter 'sig'	r29440	#define UNUSED_ __attribute__((unused))
Jun Wu chg: define PRINTF_FORMAT_ for non gnu C compiler...	r28604	#else
		#define PRINTF_FORMAT_
Yuya Nishihara chg: silence warning of unused parameter 'sig'	r29440	#define UNUSED_
Yuya Nishihara chg: import frontend sources...	r28060	#endif

		void abortmsg(const char *fmt, ...) PRINTF_FORMAT_;
Jun Wu chg: add util function abortmsgerrno to print error with errno...	r28788	void abortmsgerrno(const char *fmt, ...) PRINTF_FORMAT_;
Yuya Nishihara chg: import frontend sources...	r28060
Jun Wu chg: use color in debug/error messages conditionally...	r28787	void enablecolor(void);
Yuya Nishihara chg: import frontend sources...	r28060	void enabledebugmsg(void);
		void debugmsg(const char *fmt, ...) PRINTF_FORMAT_;

Jun Wu chg: add fchdirx as a utility function...	r28854	void fchdirx(int dirfd);
Jun Wu chg: extract the logic of setting FD_CLOEXEC to a utility function...	r28855	void fsetcloexec(int fd);
Jun Wu chg: add utility functions mallocx, reallocx...	r28165	void *mallocx(size_t size);
		void reallocx(void ptr, size_t size);

Yuya Nishihara chg: import frontend sources...	r28060	int runshellcmd(const char cmd, const char envp[], const char *cwd);

Augie Fackler chg: enable clang-format on all .c and .h files...	r35977	#endif /* UTIL_H_ */