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tchdb.c
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/*************************************************************************************************
* The hash database API of Tokyo Cabinet
* Copyright (C) 2006-2011 FAL Labs
* This file is part of Tokyo Cabinet.
* Tokyo Cabinet is free software; you can redistribute it and/or modify it under the terms of
* the GNU Lesser General Public License as published by the Free Software Foundation; either
* version 2.1 of the License or any later version. Tokyo Cabinet is distributed in the hope
* that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
* You should have received a copy of the GNU Lesser General Public License along with Tokyo
* Cabinet; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA.
*************************************************************************************************/
#include "tcutil.h"
#include "tchdb.h"
#include "tcbdb.h"
#include "myconf.h"
#define HDBFILEMODE 00644 // permission of created files
#define HDBIOBUFSIZ 8192 // size of an I/O buffer
#define HDBMAGICDATA "ToKyO CaBiNeT" // magic data for identification
#define HDBHEADSIZ 256 // size of the reagion of the header
#define HDBTYPEOFF 32 // offset of the region for the database type
#define HDBFLAGSOFF 33 // offset of the region for the additional flags
#define HDBAPOWOFF 34 // offset of the region for the alignment power
#define HDBFPOWOFF 35 // offset of the region for the free block pool power
#define HDBOPTSOFF 36 // offset of the region for the options
#define HDBBNUMOFF 40 // offset of the region for the bucket number
#define HDBRNUMOFF 48 // offset of the region for the record number
#define HDBFSIZOFF 56 // offset of the region for the file size
#define HDBFRECOFF 64 // offset of the region for the first record offset
#define HDBOPAQUEOFF 128 // offset of the region for the opaque field
#define HDBDEFBNUM 131071 // default bucket number
#define HDBDEFAPOW 4 // default alignment power
#define HDBMAXAPOW 16 // maximum alignment power
#define HDBDEFFPOW 10 // default free block pool power
#define HDBMAXFPOW 20 // maximum free block pool power
#define HDBDEFXMSIZ (64LL<<20) // default size of the extra mapped memory
#define HDBXFSIZINC 32768 // increment of extra file size
#define HDBMINRUNIT 48 // minimum record reading unit
#define HDBMAXHSIZ 32 // maximum record header size
#define HDBFBPALWRAT 2 // allowance ratio of the free block pool
#define HDBFBPBSIZ 64 // base region size of the free block pool
#define HDBFBPESIZ 4 // size of each region of the free block pool
#define HDBFBPMGFREQ 4096 // frequency to merge the free block pool
#define HDBDRPUNIT 65536 // unit size of the delayed record pool
#define HDBDRPLAT 2048 // latitude size of the delayed record pool
#define HDBDFRSRAT 2 // step ratio of auto defragmentation
#define HDBFBMAXSIZ (INT32_MAX/4) // maximum size of a free block pool
#define HDBCACHEOUT 128 // number of records in a process of cacheout
#define HDBWALSUFFIX "wal" // suffix of write ahead logging file
typedef struct { // type of structure for a record
uint64_t off; // offset of the record
uint32_t rsiz; // size of the whole record
uint8_t magic; // magic number
uint8_t hash; // second hash value
uint64_t left; // offset of the left child record
uint64_t right; // offset of the right child record
uint32_t ksiz; // size of the key
uint32_t vsiz; // size of the value
uint16_t psiz; // size of the padding
const char *kbuf; // pointer to the key
const char *vbuf; // pointer to the value
uint64_t boff; // offset of the body
char *bbuf; // buffer of the body
} TCHREC;
typedef struct { // type of structure for a free block
uint64_t off; // offset of the block
uint32_t rsiz; // size of the block
} HDBFB;
enum { // enumeration for magic data
HDBMAGICREC = 0xc8, // for data block
HDBMAGICFB = 0xb0 // for free block
};
enum { // enumeration for duplication behavior
HDBPDOVER, // overwrite an existing value
HDBPDKEEP, // keep the existing value
HDBPDCAT, // concatenate values
HDBPDADDINT, // add an integer
HDBPDADDDBL, // add a real number
HDBPDPROC // process by a callback function
};
typedef struct { // type of structure for a duplication callback
TCPDPROC proc; // function pointer
void *op; // opaque pointer
} HDBPDPROCOP;
/* private macros */
#define HDBLOCKMETHOD(TC_hdb, TC_wr) \
((TC_hdb)->mmtx ? tchdblockmethod((TC_hdb), (TC_wr)) : true)
#define HDBUNLOCKMETHOD(TC_hdb) \
((TC_hdb)->mmtx ? tchdbunlockmethod(TC_hdb) : true)
#define HDBLOCKRECORD(TC_hdb, TC_bidx, TC_wr) \
((TC_hdb)->mmtx ? tchdblockrecord((TC_hdb), (uint8_t)(TC_bidx), (TC_wr)) : true)
#define HDBUNLOCKRECORD(TC_hdb, TC_bidx) \
((TC_hdb)->mmtx ? tchdbunlockrecord((TC_hdb), (uint8_t)(TC_bidx)) : true)
#define HDBLOCKALLRECORDS(TC_hdb, TC_wr) \
((TC_hdb)->mmtx ? tchdblockallrecords((TC_hdb), (TC_wr)) : true)
#define HDBUNLOCKALLRECORDS(TC_hdb) \
((TC_hdb)->mmtx ? tchdbunlockallrecords(TC_hdb) : true)
#define HDBLOCKDB(TC_hdb) \
((TC_hdb)->mmtx ? tchdblockdb(TC_hdb) : true)
#define HDBUNLOCKDB(TC_hdb) \
((TC_hdb)->mmtx ? tchdbunlockdb(TC_hdb) : true)
#define HDBLOCKWAL(TC_hdb) \
((TC_hdb)->mmtx ? tchdblockwal(TC_hdb) : true)
#define HDBUNLOCKWAL(TC_hdb) \
((TC_hdb)->mmtx ? tchdbunlockwal(TC_hdb) : true)
#define HDBTHREADYIELD(TC_hdb) \
do { if((TC_hdb)->mmtx) sched_yield(); } while(false)
/* private function prototypes */
static uint64_t tcgetprime(uint64_t num);
static bool tchdbseekwrite(TCHDB *hdb, off_t off, const void *buf, size_t size);
static bool tchdbseekread(TCHDB *hdb, off_t off, void *buf, size_t size);
static bool tchdbseekreadtry(TCHDB *hdb, off_t off, void *buf, size_t size);
static void tchdbdumpmeta(TCHDB *hdb, char *hbuf);
static void tchdbloadmeta(TCHDB *hdb, const char *hbuf);
static void tchdbclear(TCHDB *hdb);
static int32_t tchdbpadsize(TCHDB *hdb, uint64_t off);
static void tchdbsetflag(TCHDB *hdb, int flag, bool sign);
static uint64_t tchdbbidx(TCHDB *hdb, const char *kbuf, int ksiz, uint8_t *hp);
static off_t tchdbgetbucket(TCHDB *hdb, uint64_t bidx);
static void tchdbsetbucket(TCHDB *hdb, uint64_t bidx, uint64_t off);
static bool tchdbsavefbp(TCHDB *hdb);
static bool tchdbloadfbp(TCHDB *hdb);
static void tcfbpsortbyoff(HDBFB *fbpool, int fbpnum);
static void tcfbpsortbyrsiz(HDBFB *fbpool, int fbpnum);
static void tchdbfbpmerge(TCHDB *hdb);
static void tchdbfbpinsert(TCHDB *hdb, uint64_t off, uint32_t rsiz);
static bool tchdbfbpsearch(TCHDB *hdb, TCHREC *rec);
static bool tchdbfbpsplice(TCHDB *hdb, TCHREC *rec, uint32_t nsiz);
static void tchdbfbptrim(TCHDB *hdb, uint64_t base, uint64_t next, uint64_t off, uint32_t rsiz);
static bool tchdbwritefb(TCHDB *hdb, uint64_t off, uint32_t rsiz);
static bool tchdbwriterec(TCHDB *hdb, TCHREC *rec, uint64_t bidx, off_t entoff);
static bool tchdbreadrec(TCHDB *hdb, TCHREC *rec, char *rbuf);
static bool tchdbreadrecbody(TCHDB *hdb, TCHREC *rec);
static bool tchdbremoverec(TCHDB *hdb, TCHREC *rec, char *rbuf, uint64_t bidx, off_t entoff);
static bool tchdbshiftrec(TCHDB *hdb, TCHREC *rec, char *rbuf, off_t destoff);
static int tcreckeycmp(const char *abuf, int asiz, const char *bbuf, int bsiz);
static bool tchdbflushdrp(TCHDB *hdb);
static void tchdbcacheadjust(TCHDB *hdb);
static bool tchdbwalinit(TCHDB *hdb);
static bool tchdbwalwrite(TCHDB *hdb, uint64_t off, int64_t size);
static int tchdbwalrestore(TCHDB *hdb, const char *path);
static bool tchdbwalremove(TCHDB *hdb, const char *path);
static bool tchdbopenimpl(TCHDB *hdb, const char *path, int omode);
static bool tchdbcloseimpl(TCHDB *hdb);
static bool tchdbputimpl(TCHDB *hdb, const char *kbuf, int ksiz, uint64_t bidx, uint8_t hash,
const char *vbuf, int vsiz, int dmode);
static void tchdbdrpappend(TCHDB *hdb, const char *kbuf, int ksiz, const char *vbuf, int vsiz,
uint8_t hash);
static bool tchdbputasyncimpl(TCHDB *hdb, const char *kbuf, int ksiz, uint64_t bidx,
uint8_t hash, const char *vbuf, int vsiz);
static bool tchdboutimpl(TCHDB *hdb, const char *kbuf, int ksiz, uint64_t bidx, uint8_t hash);
static char *tchdbgetimpl(TCHDB *hdb, const char *kbuf, int ksiz, uint64_t bidx, uint8_t hash,
int *sp);
static int tchdbgetintobuf(TCHDB *hdb, const char *kbuf, int ksiz, uint64_t bidx, uint8_t hash,
char *vbuf, int max);
static char *tchdbgetnextimpl(TCHDB *hdb, const char *kbuf, int ksiz, int *sp,
const char **vbp, int *vsp);
static int tchdbvsizimpl(TCHDB *hdb, const char *kbuf, int ksiz, uint64_t bidx, uint8_t hash);
static bool tchdbiterinitimpl(TCHDB *hdb);
static char *tchdbiternextimpl(TCHDB *hdb, int *sp);
static bool tchdbiternextintoxstr(TCHDB *hdb, TCXSTR *kxstr, TCXSTR *vxstr);
static bool tchdboptimizeimpl(TCHDB *hdb, int64_t bnum, int8_t apow, int8_t fpow, uint8_t opts);
static bool tchdbvanishimpl(TCHDB *hdb);
static bool tchdbcopyimpl(TCHDB *hdb, const char *path);
static bool tchdbdefragimpl(TCHDB *hdb, int64_t step);
static bool tchdbiterjumpimpl(TCHDB *hdb, const char *kbuf, int ksiz);
static bool tchdbforeachimpl(TCHDB *hdb, TCITER iter, void *op);
static bool tchdblockmethod(TCHDB *hdb, bool wr);
static bool tchdbunlockmethod(TCHDB *hdb);
static bool tchdblockrecord(TCHDB *hdb, uint8_t bidx, bool wr);
static bool tchdbunlockrecord(TCHDB *hdb, uint8_t bidx);
static bool tchdblockallrecords(TCHDB *hdb, bool wr);
static bool tchdbunlockallrecords(TCHDB *hdb);
static bool tchdblockdb(TCHDB *hdb);
static bool tchdbunlockdb(TCHDB *hdb);
static bool tchdblockwal(TCHDB *hdb);
static bool tchdbunlockwal(TCHDB *hdb);
/* debugging function prototypes */
void tchdbprintmeta(TCHDB *hdb);
void tchdbprintrec(TCHDB *hdb, TCHREC *rec);
/*************************************************************************************************
* API
*************************************************************************************************/
/* Get the message string corresponding to an error code. */
const char *tchdberrmsg(int ecode){
return tcerrmsg(ecode);
}
/* Create a hash database object. */
TCHDB *tchdbnew(void){
TCHDB *hdb;
TCMALLOC(hdb, sizeof(*hdb));
tchdbclear(hdb);
return hdb;
}
/* Delete a hash database object. */
void tchdbdel(TCHDB *hdb){
assert(hdb);
if(hdb->fd >= 0) tchdbclose(hdb);
if(hdb->mmtx){
pthread_key_delete(*(pthread_key_t *)hdb->eckey);
pthread_mutex_destroy(hdb->wmtx);
pthread_mutex_destroy(hdb->dmtx);
for(int i = UINT8_MAX; i >= 0; i--){
pthread_rwlock_destroy((pthread_rwlock_t *)hdb->rmtxs + i);
}
pthread_rwlock_destroy(hdb->mmtx);
TCFREE(hdb->eckey);
TCFREE(hdb->wmtx);
TCFREE(hdb->dmtx);
TCFREE(hdb->rmtxs);
TCFREE(hdb->mmtx);
}
TCFREE(hdb);
}
/* Get the last happened error code of a hash database object. */
int tchdbecode(TCHDB *hdb){
assert(hdb);
return hdb->mmtx ?
(int)(intptr_t)pthread_getspecific(*(pthread_key_t *)hdb->eckey) : hdb->ecode;
}
/* Set mutual exclusion control of a hash database object for threading. */
bool tchdbsetmutex(TCHDB *hdb){
assert(hdb);
if(!TCUSEPTHREAD) return true;
if(hdb->mmtx || hdb->fd >= 0){
tchdbsetecode(hdb, TCEINVALID, __FILE__, __LINE__, __func__);
return false;
}
pthread_mutexattr_t rma;
pthread_mutexattr_init(&rma);
TCMALLOC(hdb->mmtx, sizeof(pthread_rwlock_t));
TCMALLOC(hdb->rmtxs, (UINT8_MAX + 1) * sizeof(pthread_rwlock_t));
TCMALLOC(hdb->dmtx, sizeof(pthread_mutex_t));
TCMALLOC(hdb->wmtx, sizeof(pthread_mutex_t));
TCMALLOC(hdb->eckey, sizeof(pthread_key_t));
bool err = false;
if(pthread_mutexattr_settype(&rma, PTHREAD_MUTEX_RECURSIVE) != 0) err = true;
if(pthread_rwlock_init(hdb->mmtx, NULL) != 0) err = true;
for(int i = 0; i <= UINT8_MAX; i++){
if(pthread_rwlock_init((pthread_rwlock_t *)hdb->rmtxs + i, NULL) != 0) err = true;
}
if(pthread_mutex_init(hdb->dmtx, &rma) != 0) err = true;
if(pthread_mutex_init(hdb->wmtx, NULL) != 0) err = true;
if(pthread_key_create(hdb->eckey, NULL) != 0) err = true;
if(err){
tchdbsetecode(hdb, TCETHREAD, __FILE__, __LINE__, __func__);
pthread_mutexattr_destroy(&rma);
TCFREE(hdb->eckey);
TCFREE(hdb->wmtx);
TCFREE(hdb->dmtx);
TCFREE(hdb->rmtxs);
TCFREE(hdb->mmtx);
hdb->eckey = NULL;
hdb->wmtx = NULL;
hdb->dmtx = NULL;
hdb->rmtxs = NULL;
hdb->mmtx = NULL;
return false;
}
pthread_mutexattr_destroy(&rma);
return true;
}
/* Set the tuning parameters of a hash database object. */
bool tchdbtune(TCHDB *hdb, int64_t bnum, int8_t apow, int8_t fpow, uint8_t opts){
assert(hdb);
if(hdb->fd >= 0){
tchdbsetecode(hdb, TCEINVALID, __FILE__, __LINE__, __func__);
return false;
}
hdb->bnum = (bnum > 0) ? tcgetprime(bnum) : HDBDEFBNUM;
hdb->apow = (apow >= 0) ? tclmin(apow, HDBMAXAPOW) : HDBDEFAPOW;
hdb->fpow = (fpow >= 0) ? tclmin(fpow, HDBMAXFPOW) : HDBDEFFPOW;
hdb->opts = opts;
if(!_tc_deflate) hdb->opts &= ~HDBTDEFLATE;
if(!_tc_bzcompress) hdb->opts &= ~HDBTBZIP;
return true;
}
/* Set the caching parameters of a hash database object. */
bool tchdbsetcache(TCHDB *hdb, int32_t rcnum){
assert(hdb);
if(hdb->fd >= 0){
tchdbsetecode(hdb, TCEINVALID, __FILE__, __LINE__, __func__);
return false;
}
hdb->rcnum = (rcnum > 0) ? tclmin(tclmax(rcnum, HDBCACHEOUT * 2), INT_MAX / 4) : 0;
return true;
}
/* Set the size of the extra mapped memory of a hash database object. */
bool tchdbsetxmsiz(TCHDB *hdb, int64_t xmsiz){
assert(hdb);
if(hdb->fd >= 0){
tchdbsetecode(hdb, TCEINVALID, __FILE__, __LINE__, __func__);
return false;
}
hdb->xmsiz = (xmsiz > 0) ? tcpagealign(xmsiz) : 0;
return true;
}
/* Set the unit step number of auto defragmentation of a hash database object. */
bool tchdbsetdfunit(TCHDB *hdb, int32_t dfunit){
assert(hdb);
if(hdb->fd >= 0){
tchdbsetecode(hdb, TCEINVALID, __FILE__, __LINE__, __func__);
return false;
}
hdb->dfunit = (dfunit > 0) ? dfunit : 0;
return true;
}
/* Open a database file and connect a hash database object. */
bool tchdbopen(TCHDB *hdb, const char *path, int omode){
assert(hdb && path);
if(!HDBLOCKMETHOD(hdb, true)) return false;
if(hdb->fd >= 0){
tchdbsetecode(hdb, TCEINVALID, __FILE__, __LINE__, __func__);
HDBUNLOCKMETHOD(hdb);
return false;
}
char *rpath = tcrealpath(path);
if(!rpath){
int ecode = TCEOPEN;
switch(errno){
case EACCES: ecode = TCENOPERM; break;
case ENOENT: ecode = TCENOFILE; break;
case ENOTDIR: ecode = TCENOFILE; break;
}
tchdbsetecode(hdb, ecode, __FILE__, __LINE__, __func__);
HDBUNLOCKMETHOD(hdb);
return false;
}
if(!tcpathlock(rpath)){
tchdbsetecode(hdb, TCETHREAD, __FILE__, __LINE__, __func__);
TCFREE(rpath);
HDBUNLOCKMETHOD(hdb);
return false;
}
bool rv = tchdbopenimpl(hdb, path, omode);
if(rv){
hdb->rpath = rpath;
} else {
tcpathunlock(rpath);
TCFREE(rpath);
}
HDBUNLOCKMETHOD(hdb);
return rv;
}
/* Close a database object. */
bool tchdbclose(TCHDB *hdb){
assert(hdb);
if(!HDBLOCKMETHOD(hdb, true)) return false;
if(hdb->fd < 0){
tchdbsetecode(hdb, TCEINVALID, __FILE__, __LINE__, __func__);
HDBUNLOCKMETHOD(hdb);
return false;
}
bool rv = tchdbcloseimpl(hdb);
tcpathunlock(hdb->rpath);
TCFREE(hdb->rpath);
hdb->rpath = NULL;
HDBUNLOCKMETHOD(hdb);
return rv;
}
/* Store a record into a hash database object. */
bool tchdbput(TCHDB *hdb, const void *kbuf, int ksiz, const void *vbuf, int vsiz){
assert(hdb && kbuf && ksiz >= 0 && vbuf && vsiz >= 0);
if(!HDBLOCKMETHOD(hdb, false)) return false;
uint8_t hash;
uint64_t bidx = tchdbbidx(hdb, kbuf, ksiz, &hash);
if(hdb->fd < 0 || !(hdb->omode & HDBOWRITER)){
tchdbsetecode(hdb, TCEINVALID, __FILE__, __LINE__, __func__);
HDBUNLOCKMETHOD(hdb);
return false;
}
if(hdb->async && !tchdbflushdrp(hdb)){
HDBUNLOCKMETHOD(hdb);
return false;
}
if(!HDBLOCKRECORD(hdb, bidx, true)){
HDBUNLOCKMETHOD(hdb);
return false;
}
if(hdb->zmode){
char *zbuf;
if(hdb->opts & HDBTDEFLATE){
zbuf = _tc_deflate(vbuf, vsiz, &vsiz, _TCZMRAW);
} else if(hdb->opts & HDBTBZIP){
zbuf = _tc_bzcompress(vbuf, vsiz, &vsiz);
} else if(hdb->opts & HDBTTCBS){
zbuf = tcbsencode(vbuf, vsiz, &vsiz);
} else {
zbuf = hdb->enc(vbuf, vsiz, &vsiz, hdb->encop);
}
if(!zbuf){
tchdbsetecode(hdb, TCEMISC, __FILE__, __LINE__, __func__);
HDBUNLOCKRECORD(hdb, bidx);
HDBUNLOCKMETHOD(hdb);
return false;
}
bool rv = tchdbputimpl(hdb, kbuf, ksiz, bidx, hash, zbuf, vsiz, HDBPDOVER);
TCFREE(zbuf);
HDBUNLOCKRECORD(hdb, bidx);
HDBUNLOCKMETHOD(hdb);
if(hdb->dfunit > 0 && hdb->dfcnt > hdb->dfunit &&
!tchdbdefrag(hdb, hdb->dfunit * HDBDFRSRAT + 1)) rv = false;
return rv;
}
bool rv = tchdbputimpl(hdb, kbuf, ksiz, bidx, hash, vbuf, vsiz, HDBPDOVER);
HDBUNLOCKRECORD(hdb, bidx);
HDBUNLOCKMETHOD(hdb);
if(hdb->dfunit > 0 && hdb->dfcnt > hdb->dfunit &&
!tchdbdefrag(hdb, hdb->dfunit * HDBDFRSRAT + 1)) rv = false;
return rv;
}
/* Store a string record into a hash database object. */
bool tchdbput2(TCHDB *hdb, const char *kstr, const char *vstr){
assert(hdb && kstr && vstr);
return tchdbput(hdb, kstr, strlen(kstr), vstr, strlen(vstr));
}
/* Store a new record into a hash database object. */
bool tchdbputkeep(TCHDB *hdb, const void *kbuf, int ksiz, const void *vbuf, int vsiz){
assert(hdb && kbuf && ksiz >= 0 && vbuf && vsiz >= 0);
if(!HDBLOCKMETHOD(hdb, false)) return false;
uint8_t hash;
uint64_t bidx = tchdbbidx(hdb, kbuf, ksiz, &hash);
if(hdb->fd < 0 || !(hdb->omode & HDBOWRITER)){
tchdbsetecode(hdb, TCEINVALID, __FILE__, __LINE__, __func__);
HDBUNLOCKMETHOD(hdb);
return false;
}
if(hdb->async && !tchdbflushdrp(hdb)){
HDBUNLOCKMETHOD(hdb);
return false;
}
if(!HDBLOCKRECORD(hdb, bidx, true)){
HDBUNLOCKMETHOD(hdb);
return false;
}
if(hdb->zmode){
char *zbuf;
if(hdb->opts & HDBTDEFLATE){
zbuf = _tc_deflate(vbuf, vsiz, &vsiz, _TCZMRAW);
} else if(hdb->opts & HDBTBZIP){
zbuf = _tc_bzcompress(vbuf, vsiz, &vsiz);
} else if(hdb->opts & HDBTTCBS){
zbuf = tcbsencode(vbuf, vsiz, &vsiz);
} else {
zbuf = hdb->enc(vbuf, vsiz, &vsiz, hdb->encop);
}
if(!zbuf){
tchdbsetecode(hdb, TCEMISC, __FILE__, __LINE__, __func__);
HDBUNLOCKRECORD(hdb, bidx);
HDBUNLOCKMETHOD(hdb);
return false;
}
bool rv = tchdbputimpl(hdb, kbuf, ksiz, bidx, hash, zbuf, vsiz, HDBPDKEEP);
TCFREE(zbuf);
HDBUNLOCKRECORD(hdb, bidx);
HDBUNLOCKMETHOD(hdb);
if(hdb->dfunit > 0 && hdb->dfcnt > hdb->dfunit &&
!tchdbdefrag(hdb, hdb->dfunit * HDBDFRSRAT + 1)) rv = false;
return rv;
}
bool rv = tchdbputimpl(hdb, kbuf, ksiz, bidx, hash, vbuf, vsiz, HDBPDKEEP);
HDBUNLOCKRECORD(hdb, bidx);
HDBUNLOCKMETHOD(hdb);
if(hdb->dfunit > 0 && hdb->dfcnt > hdb->dfunit &&
!tchdbdefrag(hdb, hdb->dfunit * HDBDFRSRAT + 1)) rv = false;
return rv;
}
/* Store a new string record into a hash database object. */
bool tchdbputkeep2(TCHDB *hdb, const char *kstr, const char *vstr){
return tchdbputkeep(hdb, kstr, strlen(kstr), vstr, strlen(vstr));
}
/* Concatenate a value at the end of the existing record in a hash database object. */
bool tchdbputcat(TCHDB *hdb, const void *kbuf, int ksiz, const void *vbuf, int vsiz){
assert(hdb && kbuf && ksiz >= 0 && vbuf && vsiz >= 0);
if(!HDBLOCKMETHOD(hdb, false)) return false;
uint8_t hash;
uint64_t bidx = tchdbbidx(hdb, kbuf, ksiz, &hash);
if(hdb->fd < 0 || !(hdb->omode & HDBOWRITER)){
tchdbsetecode(hdb, TCEINVALID, __FILE__, __LINE__, __func__);
HDBUNLOCKMETHOD(hdb);
return false;
}
if(hdb->async && !tchdbflushdrp(hdb)){
HDBUNLOCKMETHOD(hdb);
return false;
}
if(!HDBLOCKRECORD(hdb, bidx, true)){
HDBUNLOCKMETHOD(hdb);
return false;
}
if(hdb->zmode){
char *zbuf;
int osiz;
char *obuf = tchdbgetimpl(hdb, kbuf, ksiz, bidx, hash, &osiz);
if(obuf){
TCREALLOC(obuf, obuf, osiz + vsiz + 1);
memcpy(obuf + osiz, vbuf, vsiz);
if(hdb->opts & HDBTDEFLATE){
zbuf = _tc_deflate(obuf, osiz + vsiz, &vsiz, _TCZMRAW);
} else if(hdb->opts & HDBTBZIP){
zbuf = _tc_bzcompress(obuf, osiz + vsiz, &vsiz);
} else if(hdb->opts & HDBTTCBS){
zbuf = tcbsencode(obuf, osiz + vsiz, &vsiz);
} else {
zbuf = hdb->enc(obuf, osiz + vsiz, &vsiz, hdb->encop);
}
TCFREE(obuf);
} else {
if(hdb->opts & HDBTDEFLATE){
zbuf = _tc_deflate(vbuf, vsiz, &vsiz, _TCZMRAW);
} else if(hdb->opts & HDBTBZIP){
zbuf = _tc_bzcompress(vbuf, vsiz, &vsiz);
} else if(hdb->opts & HDBTTCBS){
zbuf = tcbsencode(vbuf, vsiz, &vsiz);
} else {
zbuf = hdb->enc(vbuf, vsiz, &vsiz, hdb->encop);
}
}
if(!zbuf){
tchdbsetecode(hdb, TCEMISC, __FILE__, __LINE__, __func__);
HDBUNLOCKRECORD(hdb, bidx);
HDBUNLOCKMETHOD(hdb);
return false;
}
bool rv = tchdbputimpl(hdb, kbuf, ksiz, bidx, hash, zbuf, vsiz, HDBPDOVER);
TCFREE(zbuf);
HDBUNLOCKRECORD(hdb, bidx);
HDBUNLOCKMETHOD(hdb);
if(hdb->dfunit > 0 && hdb->dfcnt > hdb->dfunit &&
!tchdbdefrag(hdb, hdb->dfunit * HDBDFRSRAT + 1)) rv = false;
return rv;
}
bool rv = tchdbputimpl(hdb, kbuf, ksiz, bidx, hash, vbuf, vsiz, HDBPDCAT);
HDBUNLOCKRECORD(hdb, bidx);
HDBUNLOCKMETHOD(hdb);
if(hdb->dfunit > 0 && hdb->dfcnt > hdb->dfunit &&
!tchdbdefrag(hdb, hdb->dfunit * HDBDFRSRAT + 1)) rv = false;
return rv;
}
/* Concatenate a string value at the end of the existing record in a hash database object. */
bool tchdbputcat2(TCHDB *hdb, const char *kstr, const char *vstr){
assert(hdb && kstr && vstr);
return tchdbputcat(hdb, kstr, strlen(kstr), vstr, strlen(vstr));
}
/* Store a record into a hash database object in asynchronous fashion. */
bool tchdbputasync(TCHDB *hdb, const void *kbuf, int ksiz, const void *vbuf, int vsiz){
assert(hdb && kbuf && ksiz >= 0 && vbuf && vsiz >= 0);
if(!HDBLOCKMETHOD(hdb, true)) return false;
uint8_t hash;
uint64_t bidx = tchdbbidx(hdb, kbuf, ksiz, &hash);
hdb->async = true;
if(hdb->fd < 0 || !(hdb->omode & HDBOWRITER)){
tchdbsetecode(hdb, TCEINVALID, __FILE__, __LINE__, __func__);
HDBUNLOCKMETHOD(hdb);
return false;
}
if(hdb->zmode){
char *zbuf;
if(hdb->opts & HDBTDEFLATE){
zbuf = _tc_deflate(vbuf, vsiz, &vsiz, _TCZMRAW);
} else if(hdb->opts & HDBTBZIP){
zbuf = _tc_bzcompress(vbuf, vsiz, &vsiz);
} else if(hdb->opts & HDBTTCBS){
zbuf = tcbsencode(vbuf, vsiz, &vsiz);
} else {
zbuf = hdb->enc(vbuf, vsiz, &vsiz, hdb->encop);
}
if(!zbuf){
tchdbsetecode(hdb, TCEMISC, __FILE__, __LINE__, __func__);
HDBUNLOCKMETHOD(hdb);
return false;
}
bool rv = tchdbputasyncimpl(hdb, kbuf, ksiz, bidx, hash, zbuf, vsiz);
TCFREE(zbuf);
HDBUNLOCKMETHOD(hdb);
return rv;
}
bool rv = tchdbputasyncimpl(hdb, kbuf, ksiz, bidx, hash, vbuf, vsiz);
HDBUNLOCKMETHOD(hdb);
return rv;
}
/* Store a string record into a hash database object in asynchronous fashion. */
bool tchdbputasync2(TCHDB *hdb, const char *kstr, const char *vstr){
assert(hdb && kstr && vstr);
return tchdbputasync(hdb, kstr, strlen(kstr), vstr, strlen(vstr));
}
/* Remove a record of a hash database object. */
bool tchdbout(TCHDB *hdb, const void *kbuf, int ksiz){
assert(hdb && kbuf && ksiz >= 0);
if(!HDBLOCKMETHOD(hdb, false)) return false;
uint8_t hash;
uint64_t bidx = tchdbbidx(hdb, kbuf, ksiz, &hash);
if(hdb->fd < 0 || !(hdb->omode & HDBOWRITER)){
tchdbsetecode(hdb, TCEINVALID, __FILE__, __LINE__, __func__);
HDBUNLOCKMETHOD(hdb);
return false;
}
if(hdb->async && !tchdbflushdrp(hdb)){
HDBUNLOCKMETHOD(hdb);
return false;
}
if(!HDBLOCKRECORD(hdb, bidx, true)){
HDBUNLOCKMETHOD(hdb);
return false;
}
bool rv = tchdboutimpl(hdb, kbuf, ksiz, bidx, hash);
HDBUNLOCKRECORD(hdb, bidx);
HDBUNLOCKMETHOD(hdb);
if(hdb->dfunit > 0 && hdb->dfcnt > hdb->dfunit &&
!tchdbdefrag(hdb, hdb->dfunit * HDBDFRSRAT + 1)) rv = false;
return rv;
}
/* Remove a string record of a hash database object. */
bool tchdbout2(TCHDB *hdb, const char *kstr){
assert(hdb && kstr);
return tchdbout(hdb, kstr, strlen(kstr));
}
/* Retrieve a record in a hash database object. */
void *tchdbget(TCHDB *hdb, const void *kbuf, int ksiz, int *sp){
assert(hdb && kbuf && ksiz >= 0 && sp);
if(!HDBLOCKMETHOD(hdb, false)) return NULL;
uint8_t hash;
uint64_t bidx = tchdbbidx(hdb, kbuf, ksiz, &hash);
if(hdb->fd < 0){
tchdbsetecode(hdb, TCEINVALID, __FILE__, __LINE__, __func__);
HDBUNLOCKMETHOD(hdb);
return NULL;
}
if(hdb->async && !tchdbflushdrp(hdb)){
HDBUNLOCKMETHOD(hdb);
return NULL;
}
if(!HDBLOCKRECORD(hdb, bidx, false)){
HDBUNLOCKMETHOD(hdb);
return false;
}
char *rv = tchdbgetimpl(hdb, kbuf, ksiz, bidx, hash, sp);
HDBUNLOCKRECORD(hdb, bidx);
HDBUNLOCKMETHOD(hdb);
return rv;
}
/* Retrieve a string record in a hash database object. */
char *tchdbget2(TCHDB *hdb, const char *kstr){
assert(hdb && kstr);
int vsiz;
return tchdbget(hdb, kstr, strlen(kstr), &vsiz);
}
/* Retrieve a record in a hash database object and write the value into a buffer. */
int tchdbget3(TCHDB *hdb, const void *kbuf, int ksiz, void *vbuf, int max){
assert(hdb && kbuf && ksiz >= 0 && vbuf && max >= 0);
if(!HDBLOCKMETHOD(hdb, false)) return -1;
uint8_t hash;
uint64_t bidx = tchdbbidx(hdb, kbuf, ksiz, &hash);
if(hdb->fd < 0){
tchdbsetecode(hdb, TCEINVALID, __FILE__, __LINE__, __func__);
HDBUNLOCKMETHOD(hdb);
return -1;
}
if(hdb->async && !tchdbflushdrp(hdb)){
HDBUNLOCKMETHOD(hdb);
return -1;
}
if(!HDBLOCKRECORD(hdb, bidx, false)){
HDBUNLOCKMETHOD(hdb);
return -1;
}
int rv = tchdbgetintobuf(hdb, kbuf, ksiz, bidx, hash, vbuf, max);
HDBUNLOCKRECORD(hdb, bidx);
HDBUNLOCKMETHOD(hdb);
return rv;
}
/* Get the size of the value of a record in a hash database object. */
int tchdbvsiz(TCHDB *hdb, const void *kbuf, int ksiz){
assert(hdb && kbuf && ksiz >= 0);
if(!HDBLOCKMETHOD(hdb, false)) return -1;
uint8_t hash;
uint64_t bidx = tchdbbidx(hdb, kbuf, ksiz, &hash);
if(hdb->fd < 0){
tchdbsetecode(hdb, TCEINVALID, __FILE__, __LINE__, __func__);
HDBUNLOCKMETHOD(hdb);
return -1;
}
if(hdb->async && !tchdbflushdrp(hdb)){
HDBUNLOCKMETHOD(hdb);
return -1;
}
if(!HDBLOCKRECORD(hdb, bidx, false)){
HDBUNLOCKMETHOD(hdb);
return -1;
}
int rv = tchdbvsizimpl(hdb, kbuf, ksiz, bidx, hash);
HDBUNLOCKRECORD(hdb, bidx);
HDBUNLOCKMETHOD(hdb);
return rv;
}
/* Get the size of the value of a string record in a hash database object. */
int tchdbvsiz2(TCHDB *hdb, const char *kstr){
assert(hdb && kstr);
return tchdbvsiz(hdb, kstr, strlen(kstr));
}
/* Initialize the iterator of a hash database object. */
bool tchdbiterinit(TCHDB *hdb){
assert(hdb);
if(!HDBLOCKMETHOD(hdb, true)) return false;
if(hdb->fd < 0){
tchdbsetecode(hdb, TCEINVALID, __FILE__, __LINE__, __func__);
HDBUNLOCKMETHOD(hdb);
return false;
}
if(hdb->async && !tchdbflushdrp(hdb)){
HDBUNLOCKMETHOD(hdb);
return false;
}
bool rv = tchdbiterinitimpl(hdb);
HDBUNLOCKMETHOD(hdb);
return rv;
}
/* Get the next key of the iterator of a hash database object. */
void *tchdbiternext(TCHDB *hdb, int *sp){
assert(hdb && sp);
if(!HDBLOCKMETHOD(hdb, true)) return NULL;
if(hdb->fd < 0 || hdb->iter < 1){
tchdbsetecode(hdb, TCEINVALID, __FILE__, __LINE__, __func__);
HDBUNLOCKMETHOD(hdb);
return NULL;
}
if(hdb->async && !tchdbflushdrp(hdb)){
HDBUNLOCKMETHOD(hdb);
return NULL;
}
char *rv = tchdbiternextimpl(hdb, sp);
HDBUNLOCKMETHOD(hdb);
return rv;
}
/* Get the next key string of the iterator of a hash database object. */
char *tchdbiternext2(TCHDB *hdb){
assert(hdb);
int vsiz;
return tchdbiternext(hdb, &vsiz);
}
/* Get the next extensible objects of the iterator of a hash database object. */
bool tchdbiternext3(TCHDB *hdb, TCXSTR *kxstr, TCXSTR *vxstr){
assert(hdb && kxstr && vxstr);
if(!HDBLOCKMETHOD(hdb, true)) return false;
if(hdb->fd < 0 || hdb->iter < 1){
tchdbsetecode(hdb, TCEINVALID, __FILE__, __LINE__, __func__);
HDBUNLOCKMETHOD(hdb);
return false;
}
if(hdb->async && !tchdbflushdrp(hdb)){
HDBUNLOCKMETHOD(hdb);
return false;
}
bool rv = tchdbiternextintoxstr(hdb, kxstr, vxstr);
HDBUNLOCKMETHOD(hdb);
return rv;
}
/* Get forward matching keys in a hash database object. */
TCLIST *tchdbfwmkeys(TCHDB *hdb, const void *pbuf, int psiz, int max){
assert(hdb && pbuf && psiz >= 0);
TCLIST* keys = tclistnew();
if(!HDBLOCKMETHOD(hdb, true)) return keys;
if(hdb->fd < 0){
tchdbsetecode(hdb, TCEINVALID, __FILE__, __LINE__, __func__);
HDBUNLOCKMETHOD(hdb);
return keys;
}
if(hdb->async && !tchdbflushdrp(hdb)){
HDBUNLOCKMETHOD(hdb);
return keys;
}
if(max < 0) max = INT_MAX;
uint64_t iter = hdb->iter;
tchdbiterinitimpl(hdb);
char *kbuf;
int ksiz;
while(TCLISTNUM(keys) < max && (kbuf = tchdbiternextimpl(hdb, &ksiz)) != NULL){
if(ksiz >= psiz && !memcmp(kbuf, pbuf, psiz)){
tclistpushmalloc(keys, kbuf, ksiz);
} else {
TCFREE(kbuf);
}
}
hdb->iter = iter;
HDBUNLOCKMETHOD(hdb);
return keys;
}
/* Get forward matching string keys in a hash database object. */
TCLIST *tchdbfwmkeys2(TCHDB *hdb, const char *pstr, int max){
assert(hdb && pstr);
return tchdbfwmkeys(hdb, pstr, strlen(pstr), max);
}
/* Add an integer to a record in a hash database object. */
int tchdbaddint(TCHDB *hdb, const void *kbuf, int ksiz, int num){
assert(hdb && kbuf && ksiz >= 0);
if(!HDBLOCKMETHOD(hdb, false)) return INT_MIN;
uint8_t hash;
uint64_t bidx = tchdbbidx(hdb, kbuf, ksiz, &hash);
if(hdb->fd < 0 || !(hdb->omode & HDBOWRITER)){
tchdbsetecode(hdb, TCEINVALID, __FILE__, __LINE__, __func__);
HDBUNLOCKMETHOD(hdb);
return INT_MIN;
}
if(hdb->async && !tchdbflushdrp(hdb)){
HDBUNLOCKMETHOD(hdb);
return INT_MIN;
}
if(!HDBLOCKRECORD(hdb, bidx, true)){
HDBUNLOCKMETHOD(hdb);
return INT_MIN;
}
if(hdb->zmode){
char *zbuf;
int osiz;
char *obuf = tchdbgetimpl(hdb, kbuf, ksiz, bidx, hash, &osiz);
if(obuf){
if(osiz != sizeof(num)){
tchdbsetecode(hdb, TCEKEEP, __FILE__, __LINE__, __func__);
TCFREE(obuf);
HDBUNLOCKRECORD(hdb, bidx);
HDBUNLOCKMETHOD(hdb);
return INT_MIN;
}
num += *(int *)obuf;
TCFREE(obuf);
}
int zsiz;
if(hdb->opts & HDBTDEFLATE){
zbuf = _tc_deflate((char *)&num, sizeof(num), &zsiz, _TCZMRAW);
} else if(hdb->opts & HDBTBZIP){
zbuf = _tc_bzcompress((char *)&num, sizeof(num), &zsiz);
} else if(hdb->opts & HDBTTCBS){
zbuf = tcbsencode((char *)&num, sizeof(num), &zsiz);
} else {
zbuf = hdb->enc((char *)&num, sizeof(num), &zsiz, hdb->encop);
}
if(!zbuf){
tchdbsetecode(hdb, TCEMISC, __FILE__, __LINE__, __func__);
HDBUNLOCKRECORD(hdb, bidx);
HDBUNLOCKMETHOD(hdb);
return INT_MIN;
}
bool rv = tchdbputimpl(hdb, kbuf, ksiz, bidx, hash, zbuf, zsiz, HDBPDOVER);
TCFREE(zbuf);
HDBUNLOCKRECORD(hdb, bidx);
HDBUNLOCKMETHOD(hdb);
if(hdb->dfunit > 0 && hdb->dfcnt > hdb->dfunit &&
!tchdbdefrag(hdb, hdb->dfunit * HDBDFRSRAT + 1)) rv = false;
return rv ? num : INT_MIN;
}
bool rv = tchdbputimpl(hdb, kbuf, ksiz, bidx, hash, (char *)&num, sizeof(num), HDBPDADDINT);
HDBUNLOCKRECORD(hdb, bidx);
HDBUNLOCKMETHOD(hdb);
if(hdb->dfunit > 0 && hdb->dfcnt > hdb->dfunit &&
!tchdbdefrag(hdb, hdb->dfunit * HDBDFRSRAT + 1)) rv = false;
return rv ? num : INT_MIN;
}
/* Add a real number to a record in a hash database object. */
double tchdbadddouble(TCHDB *hdb, const void *kbuf, int ksiz, double num){
assert(hdb && kbuf && ksiz >= 0);
if(!HDBLOCKMETHOD(hdb, false)) return nan("");
uint8_t hash;
uint64_t bidx = tchdbbidx(hdb, kbuf, ksiz, &hash);
if(hdb->fd < 0 || !(hdb->omode & HDBOWRITER)){
tchdbsetecode(hdb, TCEINVALID, __FILE__, __LINE__, __func__);
HDBUNLOCKMETHOD(hdb);
return nan("");
}
if(hdb->async && !tchdbflushdrp(hdb)){
HDBUNLOCKMETHOD(hdb);
return nan("");
}
if(!HDBLOCKRECORD(hdb, bidx, true)){
HDBUNLOCKMETHOD(hdb);
return nan("");
}
if(hdb->zmode){
char *zbuf;
int osiz;
char *obuf = tchdbgetimpl(hdb, kbuf, ksiz, bidx, hash, &osiz);
if(obuf){
if(osiz != sizeof(num)){
tchdbsetecode(hdb, TCEKEEP, __FILE__, __LINE__, __func__);
TCFREE(obuf);
HDBUNLOCKRECORD(hdb, bidx);
HDBUNLOCKMETHOD(hdb);
return nan("");
}
num += *(double *)obuf;
TCFREE(obuf);
}
int zsiz;
if(hdb->opts & HDBTDEFLATE){
zbuf = _tc_deflate((char *)&num, sizeof(num), &zsiz, _TCZMRAW);
} else if(hdb->opts & HDBTBZIP){
zbuf = _tc_bzcompress((char *)&num, sizeof(num), &zsiz);
} else if(hdb->opts & HDBTTCBS){
zbuf = tcbsencode((char *)&num, sizeof(num), &zsiz);
} else {
zbuf = hdb->enc((char *)&num, sizeof(num), &zsiz, hdb->encop);
}
if(!zbuf){
tchdbsetecode(hdb, TCEMISC, __FILE__, __LINE__, __func__);
HDBUNLOCKRECORD(hdb, bidx);
HDBUNLOCKMETHOD(hdb);
return nan("");
}
bool rv = tchdbputimpl(hdb, kbuf, ksiz, bidx, hash, zbuf, zsiz, HDBPDOVER);
TCFREE(zbuf);
HDBUNLOCKRECORD(hdb, bidx);
HDBUNLOCKMETHOD(hdb);