| Server IP : 103.119.228.120 / Your IP : 3.144.90.108 Web Server : Apache System : Linux v8.techscape8.com 3.10.0-1160.119.1.el7.tuxcare.els2.x86_64 #1 SMP Mon Jul 15 12:09:18 UTC 2024 x86_64 User : nobody ( 99) PHP Version : 5.6.40 Disable Function : shell_exec,symlink,system,exec,proc_get_status,proc_nice,proc_terminate,define_syslog_variables,syslog,openlog,closelog,escapeshellcmd,passthru,ocinum cols,ini_alter,leak,listen,chgrp,apache_note,apache_setenv,debugger_on,debugger_off,ftp_exec,dl,dll,myshellexec,proc_open,socket_bind,proc_close,escapeshellarg,parse_ini_filepopen,fpassthru,exec,passthru,escapeshellarg,escapeshellcmd,proc_close,proc_open,ini_alter,popen,show_source,proc_nice,proc_terminate,proc_get_status,proc_close,pfsockopen,leak,apache_child_terminate,posix_kill,posix_mkfifo,posix_setpgid,posix_setsid,posix_setuid,dl,symlink,shell_exec,system,dl,passthru,escapeshellarg,escapeshellcmd,myshellexec,c99_buff_prepare,c99_sess_put,fpassthru,getdisfunc,fx29exec,fx29exec2,is_windows,disp_freespace,fx29sh_getupdate,fx29_buff_prepare,fx29_sess_put,fx29shexit,fx29fsearch,fx29ftpbrutecheck,fx29sh_tools,fx29sh_about,milw0rm,imagez,sh_name,myshellexec,checkproxyhost,dosyayicek,c99_buff_prepare,c99_sess_put,c99getsource,c99sh_getupdate,c99fsearch,c99shexit,view_perms,posix_getpwuid,posix_getgrgid,posix_kill,parse_perms,parsesort,view_perms_color,set_encoder_input,ls_setcheckboxall,ls_reverse_all,rsg_read,rsg_glob,selfURL,dispsecinfo,unix2DosTime,addFile,system,get_users,view_size,DirFiles,DirFilesWide,DirPrintHTMLHeaders,GetFilesTotal,GetTitles,GetTimeTotal,GetMatchesCount,GetFileMatchesCount,GetResultFiles,fs_copy_dir,fs_copy_obj,fs_move_dir,fs_move_obj,fs_rmdir,SearchText,getmicrotime MySQL : ON | cURL : ON | WGET : ON | Perl : ON | Python : ON | Sudo : ON | Pkexec : ON Directory : /usr/local/ssl/local/ssl/local/ssl/local/ssl/include/pgsql/server/nodes/ |
Upload File : |
/*-------------------------------------------------------------------------
*
* tidbitmap.h
* PostgreSQL tuple-id (TID) bitmap package
*
* This module provides bitmap data structures that are spiritually
* similar to Bitmapsets, but are specially adapted to store sets of
* tuple identifiers (TIDs), or ItemPointers. In particular, the division
* of an ItemPointer into BlockNumber and OffsetNumber is catered for.
* Also, since we wish to be able to store very large tuple sets in
* memory with this data structure, we support "lossy" storage, in which
* we no longer remember individual tuple offsets on a page but only the
* fact that a particular page needs to be visited.
*
*
* Copyright (c) 2003-2012, PostgreSQL Global Development Group
*
* src/include/nodes/tidbitmap.h
*
*-------------------------------------------------------------------------
*/
#ifndef TIDBITMAP_H
#define TIDBITMAP_H
#include "storage/itemptr.h"
/*
* Actual bitmap representation is private to tidbitmap.c. Callers can
* do IsA(x, TIDBitmap) on it, but nothing else.
*/
typedef struct TIDBitmap TIDBitmap;
/* Likewise, TBMIterator is private */
typedef struct TBMIterator TBMIterator;
/* Result structure for tbm_iterate */
typedef struct
{
BlockNumber blockno; /* page number containing tuples */
int ntuples; /* -1 indicates lossy result */
bool recheck; /* should the tuples be rechecked? */
/* Note: recheck is always true if ntuples < 0 */
OffsetNumber offsets[1]; /* VARIABLE LENGTH ARRAY */
} TBMIterateResult; /* VARIABLE LENGTH STRUCT */
/* function prototypes in nodes/tidbitmap.c */
extern TIDBitmap *tbm_create(long maxbytes);
extern void tbm_free(TIDBitmap *tbm);
extern void tbm_add_tuples(TIDBitmap *tbm,
const ItemPointer tids, int ntids,
bool recheck);
extern void tbm_add_page(TIDBitmap *tbm, BlockNumber pageno);
extern void tbm_union(TIDBitmap *a, const TIDBitmap *b);
extern void tbm_intersect(TIDBitmap *a, const TIDBitmap *b);
extern bool tbm_is_empty(const TIDBitmap *tbm);
extern TBMIterator *tbm_begin_iterate(TIDBitmap *tbm);
extern TBMIterateResult *tbm_iterate(TBMIterator *iterator);
extern void tbm_end_iterate(TBMIterator *iterator);
#endif /* TIDBITMAP_H */