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Comparing BDB/BDB.xs (file contents):
Revision 1.1 by root, Mon Feb 5 18:40:55 2007 UTC vs.
Revision 1.53 by root, Thu Sep 25 22:09:02 2008 UTC

1	/* solaris */	1	#include <sys/user.h>
2	#define _POSIX_PTHREAD_SEMANTICS 1	2	#include <sys/ptrace.h>
3		3
4	#if __linux && !defined(_GNU_SOURCE)	4	#define X_STACKSIZE 1024 * 128 + sizeof (long) * 64 * 1024 / 4
5	# define _GNU_SOURCE
6	#endif
7		5
8	/* just in case */	6	#include "xthread.h"
9	#define _REENTRANT 1
10		7
11	#include <errno.h>	8	#include <errno.h>
12		9
13	#include "EXTERN.h"	10	#include "EXTERN.h"
14	#include "perl.h"	11	#include "perl.h"
15	#include "XSUB.h"	12	#include "XSUB.h"
16		13
17	#include <pthread.h>	14	// perl stupidly defines these as macros, breaking
		15	// lots and lots of code.
		16	#undef open
		17	#undef close
		18	#undef abort
		19	#undef malloc
		20	#undef free
		21	#undef send
18		22
19	#include <stddef.h>	23	#include <stddef.h>
20	#include <stdlib.h>	24	#include <stdlib.h>
21	#include <errno.h>	25	#include <errno.h>
22	#include <sys/time.h>
23	#include <sys/select.h>
24	#include <sys/types.h>	26	#include <sys/types.h>
25	#include <sys/stat.h>
26	#include <limits.h>	27	#include <limits.h>
27	#include <unistd.h>
28	#include <fcntl.h>	28	#include <fcntl.h>
29	#include <signal.h>	29
		30	#ifndef _WIN32
		31	# include <sys/time.h>
		32	# include <unistd.h>
		33	#endif
		34
30	#include <sched.h>	35	#include <db.h>
		36
		37	#if DB_VERSION_MAJOR != 4 || (DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR < 3)
		38	# error you need Berkeley DB 4.3 or a newer 4.x version installed
		39	#endif
31		40
32	/* number of seconds after which idle threads exit */	41	/* number of seconds after which idle threads exit */
33	#define IDLE_TIMEOUT 10	42	#define IDLE_TIMEOUT 10
34		43
35	/* wether word reads are potentially non-atomic.	44	typedef DB_ENV DB_ENV_ornull;
36	* this is conservatice, likely most arches this runs	45	typedef DB_TXN DB_TXN_ornull;
37	* on have atomic word read/writes.	46	typedef DBC DBC_ornull;
38	*/	47	typedef DB DB_ornull;
39	#ifndef WORDACCESS_UNSAFE	48
40	# if __i386 || __x86_64	49	typedef DB_ENV DB_ENV_ornuked;
41	# define WORDACCESS_UNSAFE 0	50	typedef DB_TXN DB_TXN_ornuked;
42	# else	51	typedef DBC DBC_ornuked;
43	# define WORDACCESS_UNSAFE 1	52	typedef DB DB_ornuked;
44	# endif	53
		54	#if DB_VERSION_MINOR >= 3
		55	typedef DB_SEQUENCE DB_SEQUENCE_ornull;
		56	typedef DB_SEQUENCE DB_SEQUENCE_ornuked;
45	#endif	57	#endif
46		58
47	typedef SV SV8; /* byte-sv, used for argument-checking */	59	typedef SV SV8; /* byte-sv, used for argument-checking */
		60	typedef char *bdb_filename;
48		61
		62	static SV *prepare_cb;
		63
		64	#if DB_VERSION_MINOR >= 6
		65	# define c_close close
		66	# define c_count count
		67	# define c_del del
		68	# define c_dup dup
		69	# define c_get get
		70	# define c_pget pget
		71	# define c_put put
		72	#endif
		73
		74	static char *
		75	get_bdb_filename (SV *sv)
		76	{
		77	if (!SvOK (sv))
		78	return 0;
		79
		80	#if _WIN32
		81	/* win32 madness + win32 perl absolutely brokenness make for horrible hacks */
		82	{
		83	STRLEN len;
		84	char *src = SvPVbyte (sv, len);
		85	SV *t1 = sv_newmortal ();
		86	SV *t2 = sv_newmortal ();
		87
		88	sv_upgrade (t1, SVt_PV); SvPOK_only (t1); SvGROW (t1, len * 16 + 1);
		89	sv_upgrade (t2, SVt_PV); SvPOK_only (t2); SvGROW (t2, len * 16 + 1);
		90
		91	len = MultiByteToWideChar (CP_ACP, 0, src, len, (WCHAR *)SvPVX (t1), SvLEN (t1) / sizeof (WCHAR));
		92	len = WideCharToMultiByte (CP_UTF8, 0, (WCHAR *)SvPVX (t1), len, SvPVX (t2), SvLEN (t2), 0, 0);
		93	SvPOK_only (t2);
		94	SvPVX (t2)[len] = 0;
		95	SvCUR_set (t2, len);
		96
		97	return SvPVX (t2);
		98	}
		99	#else
		100	return SvPVbyte_nolen (sv);
		101	#endif
		102	}
		103
		104	static void
		105	debug_errcall (const DB_ENV *dbenv, const char *errpfx, const char *msg)
		106	{
		107	printf ("err[%s]\n", msg);
		108	}
		109
		110	static void
		111	debug_msgcall (const DB_ENV *dbenv, const char *msg)
		112	{
		113	printf ("msg[%s]\n", msg);
		114	}
		115
		116	static char *
		117	strdup_ornull (const char *s)
		118	{
		119	return s ? strdup (s) : 0;
		120	}
		121
		122	static void
		123	sv_to_dbt (DBT *dbt, SV *sv)
		124	{
		125	STRLEN len;
		126	char *data = SvPVbyte (sv, len);
		127
		128	dbt->data = malloc (len);
		129	memcpy (dbt->data, data, len);
		130	dbt->size = len;
		131	dbt->flags = DB_DBT_REALLOC;
		132	}
		133
		134	static void
		135	dbt_to_sv (SV *sv, DBT *dbt)
		136	{
		137	if (sv)
		138	{
		139	SvREADONLY_off (sv);
		140	sv_setsv_mg (sv, dbt->data ? newSVpvn (dbt->data, dbt->size) : &PL_sv_undef);
		141	SvREFCNT_dec (sv);
		142	}
		143
		144	//assert (dbt->flags & DBT_MALLOC || !dbt->data);
		145	free (dbt->data);
		146	}
		147
49	enum {	148	enum {
50	REQ_QUIT,	149	REQ_QUIT,
		150	REQ_ENV_OPEN, REQ_ENV_CLOSE, REQ_ENV_TXN_CHECKPOINT, REQ_ENV_LOCK_DETECT,
		151	REQ_ENV_MEMP_SYNC, REQ_ENV_MEMP_TRICKLE, REQ_ENV_DBREMOVE, REQ_ENV_DBRENAME,
		152	REQ_DB_OPEN, REQ_DB_CLOSE, REQ_DB_COMPACT, REQ_DB_SYNC, REQ_DB_UPGRADE,
		153	REQ_DB_PUT, REQ_DB_EXISTS, REQ_DB_GET, REQ_DB_PGET, REQ_DB_DEL, REQ_DB_KEY_RANGE,
		154	REQ_TXN_COMMIT, REQ_TXN_ABORT, REQ_TXN_FINISH,
		155	REQ_C_CLOSE, REQ_C_COUNT, REQ_C_PUT, REQ_C_GET, REQ_C_PGET, REQ_C_DEL,
		156	REQ_SEQ_OPEN, REQ_SEQ_CLOSE, REQ_SEQ_GET, REQ_SEQ_REMOVE,
51	};	157	};
52		158
53	#define AIO_CB \	159	typedef struct bdb_cb
		160	{
54	struct aio_cb *volatile next; \	161	struct bdb_cb *volatile next;
55	SV *callback; \	162	SV *callback;
56	int type, pri	163	int type, pri, result;
57		164
58	typedef struct aio_cb	165	DB_ENV *env;
59	{	166	DB *db;
60	AIO_CB;	167	DB_TXN *txn;
61	} aio_cb;	168	DBC *dbc;
62		169
		170	UV uv1;
		171	int int1, int2;
		172	U32 uint1, uint2;
		173	char *buf1, *buf2, *buf3;
		174	SV *sv1, *sv2, *sv3;
		175
		176	DBT dbt1, dbt2, dbt3;
		177	DB_KEY_RANGE key_range;
		178	#if DB_VERSION_MINOR >= 3
		179	DB_SEQUENCE *seq;
		180	db_seq_t seq_t;
		181	#endif
		182
		183	SV *rsv1, *rsv2; // keep some request objects alive
		184	} bdb_cb;
		185
63	typedef aio_cb *aio_req;	186	typedef bdb_cb *bdb_req;
64		187
65	enum {	188	enum {
66	PRI_MIN = -4,	189	PRI_MIN = -4,
67	PRI_MAX = 4,	190	PRI_MAX = 4,
68		191
…		…
71	NUM_PRI = PRI_MAX + PRI_BIAS + 1,	194	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
72	};	195	};
73		196
74	#define AIO_TICKS ((1000000 + 1023) >> 10)	197	#define AIO_TICKS ((1000000 + 1023) >> 10)
75		198
		199	static SV *on_next_submit;
		200
76	static unsigned int max_poll_time = 0;	201	static unsigned int max_poll_time = 0;
77	static unsigned int max_poll_reqs = 0;	202	static unsigned int max_poll_reqs = 0;
78		203
79	/* calculcate time difference in ~1/AIO_TICKS of a second */	204	/* calculcate time difference in ~1/AIO_TICKS of a second */
80	static int tvdiff (struct timeval *tv1, struct timeval *tv2)	205	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
…		…
85		210
86	static int next_pri = DEFAULT_PRI + PRI_BIAS;	211	static int next_pri = DEFAULT_PRI + PRI_BIAS;
87		212
88	static unsigned int started, idle, wanted;	213	static unsigned int started, idle, wanted;
89		214
90	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
91	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
92	#else
93	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
94	#endif
95
96	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
97	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
98
99	/* worker threads management */	215	/* worker threads management */
100	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;	216	static mutex_t wrklock = X_MUTEX_INIT;
101		217
102	typedef struct worker {	218	typedef struct worker {
103	/* locked by wrklock */	219	/* locked by wrklock */
104	struct worker *prev, *next;	220	struct worker *prev, *next;
105		221
106	pthread_t tid;	222	thread_t tid;
107		223
108	/* locked by reslock, reqlock or wrklock */	224	/* locked by reslock, reqlock or wrklock */
109	aio_req req; /* currently processed request */	225	bdb_req req; /* currently processed request */
110	void *dbuf;	226	void *dbuf;
111	DIR *dirp;	227	DIR *dirp;
112	} worker;	228	} worker;
113		229
114	static worker wrk_first = { &wrk_first, &wrk_first, 0 };	230	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
…		…
126	}	242	}
127		243
128	static volatile unsigned int nreqs, nready, npending;	244	static volatile unsigned int nreqs, nready, npending;
129	static volatile unsigned int max_idle = 4;	245	static volatile unsigned int max_idle = 4;
130	static volatile unsigned int max_outstanding = 0xffffffff;	246	static volatile unsigned int max_outstanding = 0xffffffff;
131	static int respipe [2];	247	static int respipe_osf [2], respipe [2] = { -1, -1 };
132		248
133	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	249	static mutex_t reslock = X_MUTEX_INIT;
134	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	250	static mutex_t reqlock = X_MUTEX_INIT;
135	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	251	static cond_t reqwait = X_COND_INIT;
136		252
137	#if WORDACCESS_UNSAFE	253	#if WORDACCESS_UNSAFE
138		254
139	static unsigned int get_nready ()	255	static unsigned int get_nready (void)
140	{	256	{
141	unsigned int retval;	257	unsigned int retval;
142		258
143	LOCK (reqlock);	259	X_LOCK (reqlock);
144	retval = nready;	260	retval = nready;
145	UNLOCK (reqlock);	261	X_UNLOCK (reqlock);
146		262
147	return retval;	263	return retval;
148	}	264	}
149		265
150	static unsigned int get_npending ()	266	static unsigned int get_npending (void)
151	{	267	{
152	unsigned int retval;	268	unsigned int retval;
153		269
154	LOCK (reslock);	270	X_LOCK (reslock);
155	retval = npending;	271	retval = npending;
156	UNLOCK (reslock);	272	X_UNLOCK (reslock);
157		273
158	return retval;	274	return retval;
159	}	275	}
160		276
161	static unsigned int get_nthreads ()	277	static unsigned int get_nthreads (void)
162	{	278	{
163	unsigned int retval;	279	unsigned int retval;
164		280
165	LOCK (wrklock);	281	X_LOCK (wrklock);
166	retval = started;	282	retval = started;
167	UNLOCK (wrklock);	283	X_UNLOCK (wrklock);
168		284
169	return retval;	285	return retval;
170	}	286	}
171		287
172	#else	288	#else
…		…
181	* a somewhat faster data structure might be nice, but	297	* a somewhat faster data structure might be nice, but
182	* with 8 priorities this actually needs <20 insns	298	* with 8 priorities this actually needs <20 insns
183	* per shift, the most expensive operation.	299	* per shift, the most expensive operation.
184	*/	300	*/
185	typedef struct {	301	typedef struct {
186	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */	302	bdb_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
187	int size;	303	int size;
188	} reqq;	304	} reqq;
189		305
190	static reqq req_queue;	306	static reqq req_queue;
191	static reqq res_queue;	307	static reqq res_queue;
192		308
193	int reqq_push (reqq *q, aio_req req)	309	int reqq_push (reqq *q, bdb_req req)
194	{	310	{
195	int pri = req->pri;	311	int pri = req->pri;
196	req->next = 0;	312	req->next = 0;
197		313
198	if (q->qe[pri])	314	if (q->qe[pri])
…		…
204	q->qe[pri] = q->qs[pri] = req;	320	q->qe[pri] = q->qs[pri] = req;
205		321
206	return q->size++;	322	return q->size++;
207	}	323	}
208		324
209	aio_req reqq_shift (reqq *q)	325	bdb_req reqq_shift (reqq *q)
210	{	326	{
211	int pri;	327	int pri;
212		328
213	if (!q->size)	329	if (!q->size)
214	return 0;	330	return 0;
215		331
216	--q->size;	332	--q->size;
217		333
218	for (pri = NUM_PRI; pri--; )	334	for (pri = NUM_PRI; pri--; )
219	{	335	{
220	aio_req req = q->qs[pri];	336	bdb_req req = q->qs[pri];
221		337
222	if (req)	338	if (req)
223	{	339	{
224	if (!(q->qs[pri] = req->next))	340	if (!(q->qs[pri] = req->next))
225	q->qe[pri] = 0;	341	q->qe[pri] = 0;
…		…
229	}	345	}
230		346
231	abort ();	347	abort ();
232	}	348	}
233		349
234	static int poll_cb ();	350	static int poll_cb (void);
235	static int req_invoke (aio_req req);
236	static void req_free (aio_req req);	351	static void req_free (bdb_req req);
237	static void req_cancel (aio_req req);	352	static void req_cancel (bdb_req req);
238		353
239	static int req_invoke (aio_req req)	354	static int req_invoke (bdb_req req)
240	{	355	{
241	dSP;	356	switch (req->type)
242
243	if (SvOK (req->callback))
244	{	357	{
		358	case REQ_DB_CLOSE:
		359	SvREFCNT_dec (req->sv1);
		360	break;
		361
		362	case REQ_DB_GET:
		363	case REQ_DB_PGET:
		364	dbt_to_sv (req->sv3, &req->dbt3);
		365	break;
		366
		367	case REQ_C_GET:
		368	case REQ_C_PGET:
		369	dbt_to_sv (req->sv1, &req->dbt1);
		370	dbt_to_sv (req->sv2, &req->dbt2);
		371	dbt_to_sv (req->sv3, &req->dbt3);
		372	break;
		373
		374	case REQ_DB_PUT:
		375	case REQ_C_PUT:
		376	dbt_to_sv (0, &req->dbt1);
		377	dbt_to_sv (0, &req->dbt2);
		378	break;
		379
		380	case REQ_DB_KEY_RANGE:
		381	{
		382	AV *av = newAV ();
		383
		384	av_push (av, newSVnv (req->key_range.less));
		385	av_push (av, newSVnv (req->key_range.equal));
		386	av_push (av, newSVnv (req->key_range.greater));
		387
		388	SvREADONLY_off (req->sv1);
		389	sv_setsv_mg (req->sv1, newRV_noinc ((SV *)av));
		390	SvREFCNT_dec (req->sv1);
		391	}
		392	break;
		393
		394	#if DB_VERSION_MINOR >= 3
		395	case REQ_SEQ_GET:
		396	SvREADONLY_off (req->sv1);
		397
		398	if (sizeof (IV) > 4)
		399	sv_setiv_mg (req->sv1, (IV)req->seq_t);
		400	else
		401	sv_setnv_mg (req->sv1, (NV)req->seq_t);
		402
		403	SvREFCNT_dec (req->sv1);
		404	break;
		405	#endif
		406	}
		407
		408	errno = req->result;
		409
		410	if (req->callback)
		411	{
		412	dSP;
		413
245	ENTER;	414	ENTER;
246	SAVETMPS;	415	SAVETMPS;
247	PUSHMARK (SP);	416	PUSHMARK (SP);
248	EXTEND (SP, 1);
249
250	switch (req->type)
251	{
252	}
253		417
254	PUTBACK;	418	PUTBACK;
255	call_sv (req->callback, G_VOID | G_EVAL);	419	call_sv (req->callback, G_VOID | G_EVAL);
256	SPAGAIN;	420	SPAGAIN;
257		421
258	FREETMPS;	422	FREETMPS;
259	LEAVE;	423	LEAVE;
		424
		425	return !SvTRUE (ERRSV);
260	}	426	}
261		427
262	return !SvTRUE (ERRSV);	428	return 1;
263	}	429	}
264		430
265	static void req_free (aio_req req)	431	static void req_free (bdb_req req)
266	{	432	{
		433	SvREFCNT_dec (req->callback);
		434
		435	SvREFCNT_dec (req->rsv1);
		436	SvREFCNT_dec (req->rsv2);
		437
		438	free (req->buf1);
		439	free (req->buf2);
		440	free (req->buf3);
		441
267	Safefree (req);	442	Safefree (req);
268	}	443	}
269		444
270	static void *aio_proc(void *arg);	445	#ifdef USE_SOCKETS_AS_HANDLES
		446	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		447	#else
		448	# define TO_SOCKET(x) (x)
		449	#endif
		450
		451	static void
		452	create_respipe (void)
		453	{
		454	#ifdef _WIN32
		455	int arg; /* argg */
		456	#endif
		457	int old_readfd = respipe [0];
		458
		459	if (respipe [1] >= 0)
		460	respipe_close (TO_SOCKET (respipe [1]));
		461
		462	#ifdef _WIN32
		463	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		464	#else
		465	if (pipe (respipe))
		466	#endif
		467	croak ("unable to initialize result pipe");
		468
		469	if (old_readfd >= 0)
		470	{
		471	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		472	croak ("unable to initialize result pipe(2)");
		473
		474	respipe_close (respipe [0]);
		475	respipe [0] = old_readfd;
		476	}
		477
		478	#ifdef _WIN32
		479	arg = 1;
		480	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		481	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		482	#else
		483	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		484	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		485	#endif
		486	croak ("unable to initialize result pipe(3)");
		487
		488	respipe_osf [0] = TO_SOCKET (respipe [0]);
		489	respipe_osf [1] = TO_SOCKET (respipe [1]);
		490	}
		491
		492	static void bdb_request (bdb_req req);
		493	X_THREAD_PROC (bdb_proc);
271		494
272	static void start_thread (void)	495	static void start_thread (void)
273	{	496	{
274	sigset_t fullsigset, oldsigset;
275	pthread_attr_t attr;
276
277	worker *wrk = calloc (1, sizeof (worker));	497	worker *wrk = calloc (1, sizeof (worker));
278		498
279	if (!wrk)	499	if (!wrk)
280	croak ("unable to allocate worker thread data");	500	croak ("unable to allocate worker thread data");
281		501
282	pthread_attr_init (&attr);
283	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
284	#ifdef PTHREAD_SCOPE_PROCESS
285	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
286	#endif
287
288	sigfillset (&fullsigset);
289
290	LOCK (wrklock);	502	X_LOCK (wrklock);
291	pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
292
293	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	503	if (thread_create (&wrk->tid, bdb_proc, (void *)wrk))
294	{	504	{
295	wrk->prev = &wrk_first;	505	wrk->prev = &wrk_first;
296	wrk->next = wrk_first.next;	506	wrk->next = wrk_first.next;
297	wrk_first.next->prev = wrk;	507	wrk_first.next->prev = wrk;
298	wrk_first.next = wrk;	508	wrk_first.next = wrk;
299	++started;	509	++started;
300	}	510	}
301	else	511	else
302	free (wrk);	512	free (wrk);
303		513
304	pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
305	UNLOCK (wrklock);	514	X_UNLOCK (wrklock);
306	}	515	}
307		516
308	static void maybe_start_thread ()	517	static void maybe_start_thread (void)
309	{	518	{
310	if (get_nthreads () >= wanted)	519	if (get_nthreads () >= wanted)
311	return;	520	return;
312		521
313	/* todo: maybe use idle here, but might be less exact */	522	/* todo: maybe use idle here, but might be less exact */
…		…
315	return;	524	return;
316		525
317	start_thread ();	526	start_thread ();
318	}	527	}
319		528
320	static void req_send (aio_req req)	529	static void req_send (bdb_req req)
321	{	530	{
		531	SV *wait_callback = 0;
		532
		533	if (on_next_submit)
		534	{
		535	dSP;
		536	SV *cb = sv_2mortal (on_next_submit);
		537
		538	on_next_submit = 0;
		539
		540	PUSHMARK (SP);
		541	PUTBACK;
		542	call_sv (cb, G_DISCARD | G_EVAL);
		543	SPAGAIN;
		544	}
		545
		546	// synthesize callback if none given
		547	if (!req->callback)
		548	{
		549	if (SvOK (prepare_cb))
		550	{
		551	int count;
		552
		553	dSP;
		554	PUSHMARK (SP);
		555	PUTBACK;
		556	count = call_sv (prepare_cb, G_ARRAY);
		557	SPAGAIN;
		558
		559	if (count != 2)
		560	croak ("prepare callback must return exactly two values\n");
		561
		562	wait_callback = POPs;
		563	req->callback = SvREFCNT_inc (POPs);
		564	}
		565	else
		566	{
		567	// execute request synchronously
		568	bdb_request (req);
		569	req_invoke (req);
		570	req_free (req);
		571	return;
		572	}
		573	}
		574
322	++nreqs;	575	++nreqs;
323		576
324	LOCK (reqlock);	577	X_LOCK (reqlock);
325	++nready;	578	++nready;
326	reqq_push (&req_queue, req);	579	reqq_push (&req_queue, req);
327	pthread_cond_signal (&reqwait);	580	X_COND_SIGNAL (reqwait);
328	UNLOCK (reqlock);	581	X_UNLOCK (reqlock);
329		582
330	maybe_start_thread ();	583	maybe_start_thread ();
		584
		585	if (wait_callback)
		586	{
		587	dSP;
		588	PUSHMARK (SP);
		589	PUTBACK;
		590	call_sv (wait_callback, G_DISCARD);
		591	}
331	}	592	}
332		593
333	static void end_thread (void)	594	static void end_thread (void)
334	{	595	{
335	aio_req req;	596	bdb_req req = calloc (1, sizeof (bdb_cb));
336
337	Newz (0, req, 1, aio_cb);
338		597
339	req->type = REQ_QUIT;	598	req->type = REQ_QUIT;
340	req->pri = PRI_MAX + PRI_BIAS;	599	req->pri = PRI_MAX + PRI_BIAS;
341		600
342	LOCK (reqlock);	601	X_LOCK (reqlock);
343	reqq_push (&req_queue, req);	602	reqq_push (&req_queue, req);
344	pthread_cond_signal (&reqwait);	603	X_COND_SIGNAL (reqwait);
345	UNLOCK (reqlock);	604	X_UNLOCK (reqlock);
346		605
347	LOCK (wrklock);	606	X_LOCK (wrklock);
348	--started;	607	--started;
349	UNLOCK (wrklock);	608	X_UNLOCK (wrklock);
350	}	609	}
351		610
352	static void set_max_idle (int nthreads)	611	static void set_max_idle (int nthreads)
353	{	612	{
354	if (WORDACCESS_UNSAFE) LOCK (reqlock);	613	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
355	max_idle = nthreads <= 0 ? 1 : nthreads;	614	max_idle = nthreads <= 0 ? 1 : nthreads;
356	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);	615	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
357	}	616	}
358		617
359	static void min_parallel (int nthreads)	618	static void min_parallel (int nthreads)
360	{	619	{
361	if (wanted < nthreads)	620	if (wanted < nthreads)
…		…
369		628
370	while (started > wanted)	629	while (started > wanted)
371	end_thread ();	630	end_thread ();
372	}	631	}
373		632
374	static void poll_wait ()	633	static void poll_wait (void)
375	{	634	{
376	fd_set rfd;	635	fd_set rfd;
377		636
378	while (nreqs)	637	while (nreqs)
379	{	638	{
380	int size;	639	int size;
381	if (WORDACCESS_UNSAFE) LOCK (reslock);	640	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
382	size = res_queue.size;	641	size = res_queue.size;
383	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	642	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
384		643
385	if (size)	644	if (size)
386	return;	645	return;
387		646
388	maybe_start_thread ();	647	maybe_start_thread ();
389		648
390	FD_ZERO(&rfd);	649	FD_ZERO (&rfd);
391	FD_SET(respipe [0], &rfd);	650	FD_SET (respipe [0], &rfd);
392		651
393	select (respipe [0] + 1, &rfd, 0, 0, 0);	652	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
394	}	653	}
395	}	654	}
396		655
397	static int poll_cb ()	656	static int poll_cb (void)
398	{	657	{
399	dSP;	658	dSP;
400	int count = 0;	659	int count = 0;
401	int maxreqs = max_poll_reqs;	660	int maxreqs = max_poll_reqs;
402	int do_croak = 0;	661	int do_croak = 0;
403	struct timeval tv_start, tv_now;	662	struct timeval tv_start, tv_now;
404	aio_req req;	663	bdb_req req;
405		664
406	if (max_poll_time)	665	if (max_poll_time)
407	gettimeofday (&tv_start, 0);	666	gettimeofday (&tv_start, 0);
408		667
409	for (;;)	668	for (;;)
410	{	669	{
411	for (;;)	670	for (;;)
412	{	671	{
413	maybe_start_thread ();	672	maybe_start_thread ();
414		673
415	LOCK (reslock);	674	X_LOCK (reslock);
416	req = reqq_shift (&res_queue);	675	req = reqq_shift (&res_queue);
417		676
418	if (req)	677	if (req)
419	{	678	{
420	--npending;	679	--npending;
421		680
422	if (!res_queue.size)	681	if (!res_queue.size)
423	{	682	{
424	/* read any signals sent by the worker threads */	683	/* read any signals sent by the worker threads */
425	char buf [4];	684	char buf [4];
426	while (read (respipe [0], buf, 4) == 4)	685	while (respipe_read (respipe [0], buf, 4) == 4)
427	;	686	;
428	}	687	}
429	}	688	}
430		689
431	UNLOCK (reslock);	690	X_UNLOCK (reslock);
432		691
433	if (!req)	692	if (!req)
434	break;	693	break;
435		694
436	--nreqs;	695	--nreqs;
…		…
466	}	725	}
467		726
468	return count;	727	return count;
469	}	728	}
470		729
471	static void create_pipe ()
472	{
473	if (pipe (respipe))
474	croak ("unable to initialize result pipe");
475
476	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
477	croak ("cannot set result pipe to nonblocking mode");
478
479	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
480	croak ("cannot set result pipe to nonblocking mode");
481	}
482
483	/*****************************************************************************/	730	/*****************************************************************************/
484		731
485	static void *aio_proc (void *thr_arg)	732	static void
		733	bdb_request (bdb_req req)
486	{	734	{
		735	switch (req->type)
		736	{
		737	case REQ_ENV_OPEN:
		738	req->result = req->env->open (req->env, req->buf1, req->uint1, req->int1);
		739	break;
		740
		741	case REQ_ENV_CLOSE:
		742	req->result = req->env->close (req->env, req->uint1);
		743	break;
		744
		745	case REQ_ENV_TXN_CHECKPOINT:
		746	req->result = req->env->txn_checkpoint (req->env, req->uint1, req->int1, req->uint2);
		747	break;
		748
		749	case REQ_ENV_LOCK_DETECT:
		750	req->result = req->env->lock_detect (req->env, req->uint1, req->uint2, &req->int1);
		751	break;
		752
		753	case REQ_ENV_MEMP_SYNC:
		754	req->result = req->env->memp_sync (req->env, 0);
		755	break;
		756
		757	case REQ_ENV_MEMP_TRICKLE:
		758	req->result = req->env->memp_trickle (req->env, req->int1, &req->int2);
		759	break;
		760
		761	case REQ_ENV_DBREMOVE:
		762	req->result = req->env->dbremove (req->env, req->txn, req->buf1, req->buf2, req->uint1);
		763	break;
		764
		765	case REQ_ENV_DBRENAME:
		766	req->result = req->env->dbrename (req->env, req->txn, req->buf1, req->buf2, req->buf3, req->uint1);
		767	break;
		768
		769	case REQ_DB_OPEN:
		770	req->result = req->db->open (req->db, req->txn, req->buf1, req->buf2, req->int1, req->uint1, req->int2);
		771	break;
		772
		773	case REQ_DB_CLOSE:
		774	req->result = req->db->close (req->db, req->uint1);
		775	break;
		776
		777	#if DB_VERSION_MINOR >= 4
		778	case REQ_DB_COMPACT:
		779	req->result = req->db->compact (req->db, req->txn, &req->dbt1, &req->dbt2, 0, req->uint1, 0);
		780	break;
		781	#endif
		782
		783	case REQ_DB_SYNC:
		784	req->result = req->db->sync (req->db, req->uint1);
		785	break;
		786
		787	case REQ_DB_UPGRADE:
		788	req->result = req->db->upgrade (req->db, req->buf1, req->uint1);
		789	break;
		790
		791	case REQ_DB_PUT:
		792	req->result = req->db->put (req->db, req->txn, &req->dbt1, &req->dbt2, req->uint1);
		793	break;
		794
		795	#if DB_VERSION_MINOR >= 6
		796	case REQ_DB_EXISTS:
		797	req->result = req->db->exists (req->db, req->txn, &req->dbt1, req->uint1);
		798	break;
		799	#endif
		800	case REQ_DB_GET:
		801	req->result = req->db->get (req->db, req->txn, &req->dbt1, &req->dbt3, req->uint1);
		802	break;
		803
		804	case REQ_DB_PGET:
		805	req->result = req->db->pget (req->db, req->txn, &req->dbt1, &req->dbt2, &req->dbt3, req->uint1);
		806	break;
		807
		808	case REQ_DB_DEL:
		809	req->result = req->db->del (req->db, req->txn, &req->dbt1, req->uint1);
		810	break;
		811
		812	case REQ_DB_KEY_RANGE:
		813	req->result = req->db->key_range (req->db, req->txn, &req->dbt1, &req->key_range, req->uint1);
		814	break;
		815
		816	case REQ_TXN_COMMIT:
		817	req->result = req->txn->commit (req->txn, req->uint1);
		818	break;
		819
		820	case REQ_TXN_ABORT:
		821	req->result = req->txn->abort (req->txn);
		822	break;
		823
		824	case REQ_TXN_FINISH:
		825	if (req->txn->flags & TXN_DEADLOCK)
		826	{
		827	req->result = req->txn->abort (req->txn);
		828	if (!req->result)
		829	req->result = DB_LOCK_DEADLOCK;
		830	}
		831	else
		832	req->result = req->txn->commit (req->txn, req->uint1);
		833	break;
		834
		835	case REQ_C_CLOSE:
		836	req->result = req->dbc->c_close (req->dbc);
		837	break;
		838
		839	case REQ_C_COUNT:
		840	{
		841	db_recno_t recno;
		842	req->result = req->dbc->c_count (req->dbc, &recno, req->uint1);
		843	req->uv1 = recno;
		844	}
		845	break;
		846
		847	case REQ_C_PUT:
		848	req->result = req->dbc->c_put (req->dbc, &req->dbt1, &req->dbt2, req->uint1);
		849	break;
		850
		851	case REQ_C_GET:
		852	req->result = req->dbc->c_get (req->dbc, &req->dbt1, &req->dbt3, req->uint1);
		853	break;
		854
		855	case REQ_C_PGET:
		856	req->result = req->dbc->c_pget (req->dbc, &req->dbt1, &req->dbt2, &req->dbt3, req->uint1);
		857	break;
		858
		859	case REQ_C_DEL:
		860	req->result = req->dbc->c_del (req->dbc, req->uint1);
		861	break;
		862
		863	#if DB_VERSION_MINOR >= 3
		864	case REQ_SEQ_OPEN:
		865	req->result = req->seq->open (req->seq, req->txn, &req->dbt1, req->uint1);
		866	break;
		867
		868	case REQ_SEQ_CLOSE:
		869	req->result = req->seq->close (req->seq, req->uint1);
		870	break;
		871
		872	case REQ_SEQ_GET:
		873	req->result = req->seq->get (req->seq, req->txn, req->int1, &req->seq_t, req->uint1);
		874	break;
		875
		876	case REQ_SEQ_REMOVE:
		877	req->result = req->seq->remove (req->seq, req->txn, req->uint1);
		878	break;
		879	#endif
		880
		881	default:
		882	req->result = ENOSYS;
		883	break;
		884	}
		885
		886	if (req->txn && (req->result > 0 || req->result == DB_LOCK_NOTGRANTED))
		887	req->txn->flags |= TXN_DEADLOCK;
		888	}
		889
		890	X_THREAD_PROC (bdb_proc)
		891	{
487	aio_req req;	892	bdb_req req;
488	struct timespec ts;	893	struct timespec ts;
489	worker *self = (worker *)thr_arg;	894	worker *self = (worker *)thr_arg;
490		895
491	/* try to distribute timeouts somewhat evenly */	896	/* try to distribute timeouts somewhat evenly */
492	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)	897	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
493	* (1000000000UL / 1024UL);
494		898
495	for (;;)	899	for (;;)
496	{	900	{
497	ts.tv_sec = time (0) + IDLE_TIMEOUT;	901	ts.tv_sec = time (0) + IDLE_TIMEOUT;
498		902
499	LOCK (reqlock);	903	X_LOCK (reqlock);
500		904
501	for (;;)	905	for (;;)
502	{	906	{
503	self->req = req = reqq_shift (&req_queue);	907	self->req = req = reqq_shift (&req_queue);
504		908
505	if (req)	909	if (req)
506	break;	910	break;
507		911
508	++idle;	912	++idle;
509		913
510	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)	914	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
511	== ETIMEDOUT)	915	== ETIMEDOUT)
512	{	916	{
513	if (idle > max_idle)	917	if (idle > max_idle)
514	{	918	{
515	--idle;	919	--idle;
516	UNLOCK (reqlock);	920	X_UNLOCK (reqlock);
517	LOCK (wrklock);	921	X_LOCK (wrklock);
518	--started;	922	--started;
519	UNLOCK (wrklock);	923	X_UNLOCK (wrklock);
520	goto quit;	924	goto quit;
521	}	925	}
522		926
523	/* we are allowed to idle, so do so without any timeout */	927	/* we are allowed to idle, so do so without any timeout */
524	pthread_cond_wait (&reqwait, &reqlock);	928	X_COND_WAIT (reqwait, reqlock);
525	ts.tv_sec = time (0) + IDLE_TIMEOUT;	929	ts.tv_sec = time (0) + IDLE_TIMEOUT;
526	}	930	}
527		931
528	--idle;	932	--idle;
529	}	933	}
530		934
531	--nready;	935	--nready;
532		936
533	UNLOCK (reqlock);	937	X_UNLOCK (reqlock);
534
535	errno = 0; /* strictly unnecessary */
536		938
537	switch (req->type)	939	if (req->type == REQ_QUIT)
538	{	940	{
539	case REQ_QUIT:	941	X_LOCK (reslock);
		942	free (req);
		943	self->req = 0;
		944	X_UNLOCK (reslock);
		945
540	goto quit;	946	goto quit;
541
542	default:
543	//req->result = ENOSYS;
544	break;
545	}	947	}
546		948
547	//req->errorno = errno;	949	bdb_request (req);
548		950
549	LOCK (reslock);	951	X_LOCK (reslock);
550		952
551	++npending;	953	++npending;
552		954
553	if (!reqq_push (&res_queue, req))	955	if (!reqq_push (&res_queue, req))
554	/* write a dummy byte to the pipe so fh becomes ready */	956	/* write a dummy byte to the pipe so fh becomes ready */
555	write (respipe [1], &respipe, 1);	957	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
556		958
557	self->req = 0;	959	self->req = 0;
558	worker_clear (self);	960	worker_clear (self);
559		961
560	UNLOCK (reslock);	962	X_UNLOCK (reslock);
561	}	963	}
562		964
563	quit:	965	quit:
564	LOCK (wrklock);	966	X_LOCK (wrklock);
565	worker_free (self);	967	worker_free (self);
566	UNLOCK (wrklock);	968	X_UNLOCK (wrklock);
567		969
568	return 0;	970	return 0;
569	}	971	}
570		972
571	/*****************************************************************************/	973	/*****************************************************************************/
572		974
573	static void atfork_prepare (void)	975	static void atfork_prepare (void)
574	{	976	{
575	LOCK (wrklock);	977	X_LOCK (wrklock);
576	LOCK (reqlock);	978	X_LOCK (reqlock);
577	LOCK (reslock);	979	X_LOCK (reslock);
578	}	980	}
579		981
580	static void atfork_parent (void)	982	static void atfork_parent (void)
581	{	983	{
582	UNLOCK (reslock);	984	X_UNLOCK (reslock);
583	UNLOCK (reqlock);	985	X_UNLOCK (reqlock);
584	UNLOCK (wrklock);	986	X_UNLOCK (wrklock);
585	}	987	}
586		988
587	static void atfork_child (void)	989	static void atfork_child (void)
588	{	990	{
589	aio_req prv;	991	bdb_req prv;
590		992
591	while (prv = reqq_shift (&req_queue))	993	while (prv = reqq_shift (&req_queue))
592	req_free (prv);	994	req_free (prv);
593		995
594	while (prv = reqq_shift (&res_queue))	996	while (prv = reqq_shift (&res_queue))
…		…
609	idle = 0;	1011	idle = 0;
610	nreqs = 0;	1012	nreqs = 0;
611	nready = 0;	1013	nready = 0;
612	npending = 0;	1014	npending = 0;
613		1015
614	close (respipe [0]);
615	close (respipe [1]);
616	create_pipe ();	1016	create_respipe ();
617		1017
618	atfork_parent ();	1018	atfork_parent ();
619	}	1019	}
620		1020
621	#define dREQ \	1021	#define dREQ(reqtype,rsvcnt) \
622	aio_req req; \	1022	bdb_req req; \
623	int req_pri = next_pri; \	1023	int req_pri = next_pri; \
624	next_pri = DEFAULT_PRI + PRI_BIAS; \	1024	next_pri = DEFAULT_PRI + PRI_BIAS; \
625	\	1025	\
626	if (SvOK (callback) && !SvROK (callback)) \	1026	if (callback && SvOK (callback)) \
627	croak ("callback must be undef or of reference type"); \	1027	croak ("callback has illegal type or extra arguments"); \
628	\	1028	\
629	Newz (0, req, 1, aio_cb); \	1029	Newz (0, req, 1, bdb_cb); \
630	if (!req) \	1030	if (!req) \
631	croak ("out of memory during aio_req allocation"); \	1031	croak ("out of memory during bdb_req allocation"); \
632	\	1032	\
633	req->callback = newSVsv (callback); \	1033	req->callback = SvREFCNT_inc (cb); \
		1034	req->type = (reqtype); \
634	req->pri = req_pri	1035	req->pri = req_pri; \
		1036	if (rsvcnt >= 1) req->rsv1 = SvREFCNT_inc (ST (0)); \
		1037	if (rsvcnt >= 2) req->rsv2 = SvREFCNT_inc (ST (1)); \
		1038	(void)0;
635		1039
636	#define REQ_SEND \	1040	#define REQ_SEND \
637	req_send (req); \	1041	req_send (req)
		1042
		1043	#define SvPTR(var, arg, type, class, nullok) \
		1044	if (!SvOK (arg)) \
		1045	{ \
		1046	if (nullok != 1) \
		1047	croak (# var " must be a " # class " object, not undef"); \
638	\	1048	\
639	if (GIMME_V != G_VOID) \	1049	(var) = 0; \
640	XPUSHs (req_sv (req, AIO_REQ_KLASS));	1050	} \
641		1051	else if (sv_derived_from ((arg), # class)) \
		1052	{ \
		1053	IV tmp = SvIV ((SV*) SvRV (arg)); \
		1054	(var) = INT2PTR (type, tmp); \
		1055	if (!var && nullok != 2) \
		1056	croak (# var " is not a valid " # class " object anymore"); \
		1057	} \
		1058	else \
		1059	croak (# var " is not of type " # class);
		1060
		1061	static void
		1062	ptr_nuke (SV *sv)
		1063	{
		1064	assert (SvROK (sv));
		1065	sv_setiv (SvRV (sv), 0);
		1066	}
		1067
		1068	static int
		1069	errno_get (pTHX_ SV *sv, MAGIC *mg)
		1070	{
		1071	if (*mg->mg_ptr == '!') // should always be the case
		1072	if (-30999 <= errno && errno <= -30800)
		1073	{
		1074	sv_setnv (sv, (NV)errno);
		1075	sv_setpv (sv, db_strerror (errno));
		1076	SvNOK_on (sv); /* what a wonderful hack! */
		1077	// ^^^ copied from perl sources
		1078	return 0;
		1079	}
		1080
		1081	return PL_vtbl_sv.svt_get (aTHX_ sv, mg);
		1082	}
		1083
		1084	static MGVTBL vtbl_errno;
		1085
		1086	// this wonderful hack :( patches perl's $! variable to support our errno values
		1087	static void
		1088	patch_errno (void)
		1089	{
		1090	SV *sv;
		1091	MAGIC *mg;
		1092
		1093	if (!(sv = get_sv ("!", 1)))
		1094	return;
		1095
		1096	if (!(mg = mg_find (sv, PERL_MAGIC_sv)))
		1097	return;
		1098
		1099	if (mg->mg_virtual != &PL_vtbl_sv)
		1100	return;
		1101
		1102	vtbl_errno = PL_vtbl_sv;
		1103	vtbl_errno.svt_get = errno_get;
		1104	mg->mg_virtual = &vtbl_errno;
		1105	}
		1106
		1107	#if __GNUC__ >= 4
		1108	# define noinline __attribute__ ((noinline))
		1109	#else
		1110	# define noinline
		1111	#endif
		1112
		1113	static noinline SV *
		1114	pop_callback (I32 *ritems, SV *sv)
		1115	{
		1116	if (SvROK (sv))
		1117	{
		1118	HV *st;
		1119	GV *gvp;
		1120	CV *cv;
		1121	const char *name;
		1122
		1123	/* forgive me */
		1124	if (SvTYPE (SvRV (sv)) == SVt_PVMG
		1125	&& (st = SvSTASH (SvRV (sv)))
		1126	&& (name = HvNAME_get (st))
		1127	&& (name [0] == 'B' && name [1] == 'D' && name [2] == 'B' && name [3] == ':'))
		1128	return 0;
		1129
		1130	if ((cv = sv_2cv (sv, &st, &gvp, 0)))
		1131	{
		1132	--*ritems;
		1133	return (SV *)cv;
		1134	}
		1135	}
		1136
		1137	return 0;
		1138	}
		1139
		1140	/* stupid windoes defined CALLBACK as well */
		1141	#undef CALLBACK
		1142	#define CALLBACK SV *cb = pop_callback (&items, ST (items - 1));
		1143
642	MODULE = BDB::AIO PACKAGE = BDB::AIO	1144	MODULE = BDB PACKAGE = BDB
643		1145
644	PROTOTYPES: ENABLE	1146	PROTOTYPES: ENABLE
645		1147
646	BOOT:	1148	BOOT:
647	{	1149	{
648	HV *stash = gv_stashpv ("BDB::AIO", 1);	1150	HV *stash = gv_stashpv ("BDB", 1);
649		1151
650	create_pipe ();	1152	static const struct {
		1153	const char *name;
		1154	IV iv;
		1155	} *civ, const_iv[] = {
		1156	#define const_iv(name) { # name, (IV)DB_ ## name },
		1157	const_iv (RPCCLIENT)
		1158	const_iv (INIT_CDB)
		1159	const_iv (INIT_LOCK)
		1160	const_iv (INIT_LOG)
		1161	const_iv (INIT_MPOOL)
		1162	const_iv (INIT_REP)
		1163	const_iv (INIT_TXN)
		1164	const_iv (RECOVER)
		1165	const_iv (INIT_TXN)
		1166	const_iv (RECOVER_FATAL)
		1167	const_iv (CREATE)
		1168	const_iv (RDONLY)
		1169	const_iv (USE_ENVIRON)
		1170	const_iv (USE_ENVIRON_ROOT)
		1171	const_iv (LOCKDOWN)
		1172	const_iv (PRIVATE)
		1173	const_iv (SYSTEM_MEM)
		1174	const_iv (AUTO_COMMIT)
		1175	const_iv (CDB_ALLDB)
		1176	const_iv (DIRECT_DB)
		1177	const_iv (NOLOCKING)
		1178	const_iv (NOMMAP)
		1179	const_iv (NOPANIC)
		1180	const_iv (OVERWRITE)
		1181	const_iv (PANIC_ENVIRONMENT)
		1182	const_iv (REGION_INIT)
		1183	const_iv (TIME_NOTGRANTED)
		1184	const_iv (TXN_NOSYNC)
		1185	const_iv (TXN_NOT_DURABLE)
		1186	const_iv (TXN_WRITE_NOSYNC)
		1187	const_iv (WRITECURSOR)
		1188	const_iv (YIELDCPU)
		1189	const_iv (ENCRYPT_AES)
		1190	const_iv (XA_CREATE)
		1191	const_iv (BTREE)
		1192	const_iv (HASH)
		1193	const_iv (QUEUE)
		1194	const_iv (RECNO)
		1195	const_iv (UNKNOWN)
		1196	const_iv (EXCL)
		1197	const_iv (TRUNCATE)
		1198	const_iv (NOSYNC)
		1199	const_iv (CHKSUM)
		1200	const_iv (ENCRYPT)
		1201	const_iv (DUP)
		1202	const_iv (DUPSORT)
		1203	const_iv (RECNUM)
		1204	const_iv (RENUMBER)
		1205	const_iv (REVSPLITOFF)
		1206	const_iv (CONSUME)
		1207	const_iv (CONSUME_WAIT)
		1208	const_iv (GET_BOTH)
		1209	const_iv (GET_BOTH_RANGE)
		1210	//const_iv (SET_RECNO)
		1211	//const_iv (MULTIPLE)
		1212	const_iv (SNAPSHOT)
		1213	const_iv (JOIN_ITEM)
		1214	const_iv (JOIN_NOSORT)
		1215	const_iv (RMW)
		1216
		1217	const_iv (NOTFOUND)
		1218	const_iv (KEYEMPTY)
		1219	const_iv (LOCK_DEADLOCK)
		1220	const_iv (LOCK_NOTGRANTED)
		1221	const_iv (RUNRECOVERY)
		1222	const_iv (OLD_VERSION)
		1223	const_iv (REP_HANDLE_DEAD)
		1224	const_iv (SECONDARY_BAD)
		1225
		1226	const_iv (APPEND)
		1227	const_iv (NODUPDATA)
		1228	const_iv (NOOVERWRITE)
		1229
		1230	const_iv (TXN_NOWAIT)
		1231	const_iv (TXN_SYNC)
		1232
		1233	const_iv (SET_LOCK_TIMEOUT)
		1234	const_iv (SET_TXN_TIMEOUT)
		1235
		1236	const_iv (FIRST)
		1237	const_iv (NEXT)
		1238	const_iv (NEXT_DUP)
		1239	const_iv (NEXT_NODUP)
		1240	const_iv (PREV)
		1241	const_iv (PREV_NODUP)
		1242	const_iv (SET)
		1243	const_iv (SET_RANGE)
		1244	const_iv (LAST)
		1245	const_iv (BEFORE)
		1246	const_iv (AFTER)
		1247	const_iv (CURRENT)
		1248	const_iv (KEYFIRST)
		1249	const_iv (KEYLAST)
		1250	const_iv (NODUPDATA)
		1251
		1252	const_iv (FORCE)
		1253
		1254	const_iv (LOCK_DEFAULT)
		1255	const_iv (LOCK_EXPIRE)
		1256	const_iv (LOCK_MAXLOCKS)
		1257	const_iv (LOCK_MINLOCKS)
		1258	const_iv (LOCK_MINWRITE)
		1259	const_iv (LOCK_OLDEST)
		1260	const_iv (LOCK_RANDOM)
		1261	const_iv (LOCK_YOUNGEST)
		1262
		1263	const_iv (DONOTINDEX)
		1264	const_iv (KEYEMPTY )
		1265	const_iv (KEYEXIST )
		1266	const_iv (LOCK_DEADLOCK)
		1267	const_iv (LOCK_NOTGRANTED)
		1268	const_iv (NOSERVER)
		1269	const_iv (NOSERVER_HOME)
		1270	const_iv (NOSERVER_ID)
		1271	const_iv (NOTFOUND)
		1272	const_iv (PAGE_NOTFOUND)
		1273	const_iv (REP_DUPMASTER)
		1274	const_iv (REP_HANDLE_DEAD)
		1275	const_iv (REP_HOLDELECTION)
		1276	const_iv (REP_ISPERM)
		1277	const_iv (REP_NEWMASTER)
		1278	const_iv (REP_NEWSITE)
		1279	const_iv (REP_NOTPERM)
		1280	const_iv (REP_UNAVAIL)
		1281	const_iv (RUNRECOVERY)
		1282	const_iv (SECONDARY_BAD)
		1283	const_iv (VERIFY_BAD)
		1284
		1285	const_iv (VERB_DEADLOCK)
		1286	const_iv (VERB_RECOVERY)
		1287	const_iv (VERB_REPLICATION)
		1288	const_iv (VERB_WAITSFOR)
		1289
		1290	const_iv (VERSION_MAJOR)
		1291	const_iv (VERSION_MINOR)
		1292	const_iv (VERSION_PATCH)
		1293	#if DB_VERSION_MINOR >= 3
		1294	const_iv (INORDER)
		1295	const_iv (LOCK_MAXWRITE)
		1296	const_iv (SEQ_DEC)
		1297	const_iv (SEQ_INC)
		1298	const_iv (SEQ_WRAP)
		1299	const_iv (BUFFER_SMALL)
		1300	const_iv (LOG_BUFFER_FULL)
		1301	const_iv (VERSION_MISMATCH)
		1302	#endif
		1303	#if DB_VERSION_MINOR >= 4
		1304	const_iv (REGISTER)
		1305	const_iv (DSYNC_DB)
		1306	const_iv (READ_COMMITTED)
		1307	const_iv (READ_UNCOMMITTED)
		1308	const_iv (REP_IGNORE)
		1309	const_iv (REP_LOCKOUT)
		1310	const_iv (REP_JOIN_FAILURE)
		1311	const_iv (FREE_SPACE)
		1312	const_iv (FREELIST_ONLY)
		1313	const_iv (VERB_REGISTER)
		1314	#endif
		1315	#if DB_VERSION_MINOR >= 5
		1316	const_iv (MULTIVERSION)
		1317	const_iv (TXN_SNAPSHOT)
		1318	#endif
		1319	#if DB_VERSION_MINOR >= 6
		1320	const_iv (PREV_DUP)
		1321	const_iv (PRIORITY_UNCHANGED)
		1322	const_iv (PRIORITY_VERY_LOW)
		1323	const_iv (PRIORITY_LOW)
		1324	const_iv (PRIORITY_DEFAULT)
		1325	const_iv (PRIORITY_HIGH)
		1326	const_iv (PRIORITY_VERY_HIGH)
		1327	#endif
		1328	#if DB_VERSION_MINOR >= 7
		1329	const_iv (LOG_DIRECT)
		1330	const_iv (LOG_DSYNC)
		1331	const_iv (LOG_AUTO_REMOVE)
		1332	const_iv (LOG_IN_MEMORY)
		1333	const_iv (LOG_ZERO)
		1334	#else
		1335	const_iv (DIRECT_LOG)
		1336	const_iv (LOG_AUTOREMOVE)
		1337	# if DB_VERSION_MINOR >= 3
		1338	const_iv (DSYNC_LOG)
		1339	const_iv (LOG_INMEMORY)
		1340	# endif
		1341	#endif
		1342	};
		1343
		1344	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		1345	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
		1346
		1347	prepare_cb = &PL_sv_undef;
		1348
		1349	{
		1350	/* we currently only allow version, minor-version and patchlevel to go up to 255 */
		1351	char vstring[3] = { DB_VERSION_MAJOR, DB_VERSION_MINOR, DB_VERSION_PATCH };
		1352
		1353	newCONSTSUB (stash, "VERSION_v", newSVpvn (vstring, 3));
		1354	}
		1355
		1356	newCONSTSUB (stash, "VERSION_STRING", newSVpv (DB_VERSION_STRING, 0));
		1357
		1358	create_respipe ();
		1359
651	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1360	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
		1361	patch_errno ();
652	}	1362	}
653		1363
654	void	1364	void
655	max_poll_reqs (int nreqs)	1365	max_poll_reqs (int nreqs)
656	PROTOTYPE: $	1366	PROTOTYPE: $
…		…
685	max_outstanding = maxreqs;	1395	max_outstanding = maxreqs;
686	OUTPUT:	1396	OUTPUT:
687	RETVAL	1397	RETVAL
688		1398
689	int	1399	int
690	bdbreq_pri (int pri = 0)	1400	dbreq_pri (int pri = 0)
691	PROTOTYPE: ;$	1401	PROTOTYPE: ;$
692	CODE:	1402	CODE:
693	RETVAL = next_pri - PRI_BIAS;	1403	RETVAL = next_pri - PRI_BIAS;
694	if (items > 0)	1404	if (items > 0)
695	{	1405	{
…		…
699	}	1409	}
700	OUTPUT:	1410	OUTPUT:
701	RETVAL	1411	RETVAL
702		1412
703	void	1413	void
704	bdbreq_nice (int nice = 0)	1414	dbreq_nice (int nice = 0)
705	CODE:	1415	CODE:
706	nice = next_pri - nice;	1416	nice = next_pri - nice;
707	if (nice < PRI_MIN) nice = PRI_MIN;	1417	if (nice < PRI_MIN) nice = PRI_MIN;
708	if (nice > PRI_MAX) nice = PRI_MAX;	1418	if (nice > PRI_MAX) nice = PRI_MAX;
709	next_pri = nice + PRI_BIAS;	1419	next_pri = nice + PRI_BIAS;
…		…
717	poll_wait ();	1427	poll_wait ();
718	poll_cb ();	1428	poll_cb ();
719	}	1429	}
720		1430
721	int	1431	int
722	poll()	1432	poll ()
723	PROTOTYPE:	1433	PROTOTYPE:
724	CODE:	1434	CODE:
725	poll_wait ();	1435	poll_wait ();
726	RETVAL = poll_cb ();	1436	RETVAL = poll_cb ();
727	OUTPUT:	1437	OUTPUT:
728	RETVAL	1438	RETVAL
729		1439
730	int	1440	int
731	poll_fileno()	1441	poll_fileno ()
732	PROTOTYPE:	1442	PROTOTYPE:
733	CODE:	1443	CODE:
734	RETVAL = respipe [0];	1444	RETVAL = respipe [0];
735	OUTPUT:	1445	OUTPUT:
736	RETVAL	1446	RETVAL
737		1447
738	int	1448	int
739	poll_cb(...)	1449	poll_cb (...)
740	PROTOTYPE:	1450	PROTOTYPE:
741	CODE:	1451	CODE:
742	RETVAL = poll_cb ();	1452	RETVAL = poll_cb ();
743	OUTPUT:	1453	OUTPUT:
744	RETVAL	1454	RETVAL
745		1455
746	void	1456	void
747	poll_wait()	1457	poll_wait ()
748	PROTOTYPE:	1458	PROTOTYPE:
749	CODE:	1459	CODE:
750	poll_wait ();	1460	poll_wait ();
751		1461
752	int	1462	int
753	nreqs()	1463	nreqs ()
754	PROTOTYPE:	1464	PROTOTYPE:
755	CODE:	1465	CODE:
756	RETVAL = nreqs;	1466	RETVAL = nreqs;
757	OUTPUT:	1467	OUTPUT:
758	RETVAL	1468	RETVAL
759		1469
760	int	1470	int
761	nready()	1471	nready ()
762	PROTOTYPE:	1472	PROTOTYPE:
763	CODE:	1473	CODE:
764	RETVAL = get_nready ();	1474	RETVAL = get_nready ();
765	OUTPUT:	1475	OUTPUT:
766	RETVAL	1476	RETVAL
767		1477
768	int	1478	int
769	npending()	1479	npending ()
770	PROTOTYPE:	1480	PROTOTYPE:
771	CODE:	1481	CODE:
772	RETVAL = get_npending ();	1482	RETVAL = get_npending ();
773	OUTPUT:	1483	OUTPUT:
774	RETVAL	1484	RETVAL
775		1485
776	int	1486	int
777	nthreads()	1487	nthreads ()
778	PROTOTYPE:	1488	PROTOTYPE:
779	CODE:	1489	CODE:
780	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1490	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
781	RETVAL = started;	1491	RETVAL = started;
782	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);	1492	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
783	OUTPUT:	1493	OUTPUT:
784	RETVAL	1494	RETVAL
785		1495
		1496	SV *
		1497	set_sync_prepare (SV *cb)
		1498	PROTOTYPE: &
		1499	CODE:
		1500	RETVAL = prepare_cb;
		1501	prepare_cb = newSVsv (cb);
		1502	OUTPUT:
		1503	RETVAL
786		1504
		1505	char *
		1506	strerror (int errorno = errno)
		1507	PROTOTYPE: ;$
		1508	CODE:
		1509	RETVAL = db_strerror (errorno);
		1510	OUTPUT:
		1511	RETVAL
		1512
		1513	void _on_next_submit (SV *cb)
		1514	CODE:
		1515	SvREFCNT_dec (on_next_submit);
		1516	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1517
		1518	DB_ENV *
		1519	db_env_create (U32 env_flags = 0)
		1520	CODE:
		1521	{
		1522	errno = db_env_create (&RETVAL, env_flags);
		1523	if (errno)
		1524	croak ("db_env_create: %s", db_strerror (errno));
		1525
		1526	if (0)
		1527	{
		1528	RETVAL->set_errcall (RETVAL, debug_errcall);
		1529	RETVAL->set_msgcall (RETVAL, debug_msgcall);
		1530	}
		1531	}
		1532	OUTPUT:
		1533	RETVAL
		1534
		1535	void
		1536	db_env_open (DB_ENV *env, bdb_filename db_home, U32 open_flags, int mode, SV *callback = 0)
		1537	PREINIT:
		1538	CALLBACK
		1539	CODE:
		1540	{
		1541	dREQ (REQ_ENV_OPEN, 1);
		1542	req->env = env;
		1543	req->uint1 = open_flags | DB_THREAD;
		1544	req->int1 = mode;
		1545	req->buf1 = strdup_ornull (db_home);
		1546	REQ_SEND;
		1547	}
		1548
		1549	void
		1550	db_env_close (DB_ENV *env, U32 flags = 0, SV *callback = 0)
		1551	PREINIT:
		1552	CALLBACK
		1553	CODE:
		1554	{
		1555	dREQ (REQ_ENV_CLOSE, 1);
		1556	req->env = env;
		1557	req->uint1 = flags;
		1558	REQ_SEND;
		1559	ptr_nuke (ST (0));
		1560	}
		1561
		1562	void
		1563	db_env_txn_checkpoint (DB_ENV *env, U32 kbyte = 0, U32 min = 0, U32 flags = 0, SV *callback = 0)
		1564	PREINIT:
		1565	CALLBACK
		1566	CODE:
		1567	{
		1568	dREQ (REQ_ENV_TXN_CHECKPOINT, 1);
		1569	req->env = env;
		1570	req->uint1 = kbyte;
		1571	req->int1 = min;
		1572	req->uint2 = flags;
		1573	REQ_SEND;
		1574	}
		1575
		1576	void
		1577	db_env_lock_detect (DB_ENV *env, U32 flags = 0, U32 atype = DB_LOCK_DEFAULT, SV *dummy = 0, SV *callback = 0)
		1578	PREINIT:
		1579	CALLBACK
		1580	CODE:
		1581	{
		1582	dREQ (REQ_ENV_LOCK_DETECT, 1);
		1583	req->env = env;
		1584	req->uint1 = flags;
		1585	req->uint2 = atype;
		1586	/* req->int2 = 0; dummy */
		1587	REQ_SEND;
		1588	}
		1589
		1590	void
		1591	db_env_memp_sync (DB_ENV *env, SV *dummy = 0, SV *callback = 0)
		1592	PREINIT:
		1593	CALLBACK
		1594	CODE:
		1595	{
		1596	dREQ (REQ_ENV_MEMP_SYNC, 1);
		1597	req->env = env;
		1598	REQ_SEND;
		1599	}
		1600
		1601	void
		1602	db_env_memp_trickle (DB_ENV *env, int percent, SV *dummy = 0, SV *callback = 0)
		1603	PREINIT:
		1604	CALLBACK
		1605	CODE:
		1606	{
		1607	dREQ (REQ_ENV_MEMP_TRICKLE, 1);
		1608	req->env = env;
		1609	req->int1 = percent;
		1610	REQ_SEND;
		1611	}
		1612
		1613	void
		1614	db_env_dbremove (DB_ENV *env, DB_TXN_ornull *txnid, bdb_filename file, bdb_filename database, U32 flags = 0, SV *callback = 0)
		1615	PREINIT:
		1616	CALLBACK
		1617	CODE:
		1618	{
		1619	dREQ (REQ_ENV_DBREMOVE, 2);
		1620	req->env = env;
		1621	req->buf1 = strdup_ornull (file);
		1622	req->buf2 = strdup_ornull (database);
		1623	req->uint1 = flags;
		1624	REQ_SEND;
		1625	}
		1626
		1627	void
		1628	db_env_dbrename (DB_ENV *env, DB_TXN_ornull *txnid, bdb_filename file, bdb_filename database, bdb_filename newname, U32 flags = 0, SV *callback = 0)
		1629	PREINIT:
		1630	CALLBACK
		1631	CODE:
		1632	{
		1633	dREQ (REQ_ENV_DBRENAME, 2);
		1634	req->env = env;
		1635	req->buf1 = strdup_ornull (file);
		1636	req->buf2 = strdup_ornull (database);
		1637	req->buf3 = strdup_ornull (newname);
		1638	req->uint1 = flags;
		1639	REQ_SEND;
		1640	}
		1641
		1642	DB *
		1643	db_create (DB_ENV *env = 0, U32 flags = 0)
		1644	CODE:
		1645	{
		1646	errno = db_create (&RETVAL, env, flags);
		1647	if (errno)
		1648	croak ("db_create: %s", db_strerror (errno));
		1649
		1650	if (RETVAL)
		1651	RETVAL->app_private = (void *)newSVsv (ST (0));
		1652	}
		1653	OUTPUT:
		1654	RETVAL
		1655
		1656	void
		1657	db_open (DB *db, DB_TXN_ornull *txnid, bdb_filename file, bdb_filename database, int type, U32 flags, int mode, SV *callback = 0)
		1658	PREINIT:
		1659	CALLBACK
		1660	CODE:
		1661	{
		1662	dREQ (REQ_DB_OPEN, 2);
		1663	req->db = db;
		1664	req->txn = txnid;
		1665	req->buf1 = strdup_ornull (file);
		1666	req->buf2 = strdup_ornull (database);
		1667	req->int1 = type;
		1668	req->uint1 = flags | DB_THREAD;
		1669	req->int2 = mode;
		1670	REQ_SEND;
		1671	}
		1672
		1673	void
		1674	db_close (DB *db, U32 flags = 0, SV *callback = 0)
		1675	PREINIT:
		1676	CALLBACK
		1677	CODE:
		1678	{
		1679	dREQ (REQ_DB_CLOSE, 1);
		1680	req->db = db;
		1681	req->uint1 = flags;
		1682	req->sv1 = (SV *)db->app_private;
		1683	REQ_SEND;
		1684	ptr_nuke (ST (0));
		1685	}
		1686
		1687	#if DB_VERSION_MINOR >= 4
		1688
		1689	void
		1690	db_compact (DB *db, DB_TXN_ornull *txn = 0, SV *start = 0, SV *stop = 0, SV *unused1 = 0, U32 flags = DB_FREE_SPACE, SV *unused2 = 0, SV *callback = 0)
		1691	PREINIT:
		1692	CALLBACK
		1693	CODE:
		1694	{
		1695	dREQ (REQ_DB_COMPACT, 2);
		1696	req->db = db;
		1697	req->txn = txn;
		1698	sv_to_dbt (&req->dbt1, start);
		1699	sv_to_dbt (&req->dbt2, stop);
		1700	req->uint1 = flags;
		1701	REQ_SEND;
		1702	}
		1703
		1704	#endif
		1705
		1706	void
		1707	db_sync (DB *db, U32 flags = 0, SV *callback = 0)
		1708	PREINIT:
		1709	CALLBACK
		1710	CODE:
		1711	{
		1712	dREQ (REQ_DB_SYNC, 1);
		1713	req->db = db;
		1714	req->uint1 = flags;
		1715	REQ_SEND;
		1716	}
		1717
		1718	void
		1719	db_upgrade (DB *db, bdb_filename file, U32 flags = 0, SV *callback = 0)
		1720	PREINIT:
		1721	CALLBACK
		1722	CODE:
		1723	{
		1724	dREQ (REQ_DB_SYNC, 1);
		1725	req->db = db;
		1726	req->buf1 = strdup (file);
		1727	req->uint1 = flags;
		1728	REQ_SEND;
		1729	}
		1730
		1731	void
		1732	db_key_range (DB *db, DB_TXN_ornull *txn, SV *key, SV *key_range, U32 flags = 0, SV *callback = 0)
		1733	PREINIT:
		1734	CALLBACK
		1735	CODE:
		1736	{
		1737	dREQ (REQ_DB_KEY_RANGE, 2);
		1738	req->db = db;
		1739	req->txn = txn;
		1740	sv_to_dbt (&req->dbt1, key);
		1741	req->uint1 = flags;
		1742	req->sv1 = SvREFCNT_inc (key_range); SvREADONLY_on (key_range);
		1743	REQ_SEND;
		1744	}
		1745
		1746	void
		1747	db_put (DB *db, DB_TXN_ornull *txn, SV *key, SV *data, U32 flags = 0, SV *callback = 0)
		1748	PREINIT:
		1749	CALLBACK
		1750	CODE:
		1751	{
		1752	dREQ (REQ_DB_PUT, 2);
		1753	req->db = db;
		1754	req->txn = txn;
		1755	sv_to_dbt (&req->dbt1, key);
		1756	sv_to_dbt (&req->dbt2, data);
		1757	req->uint1 = flags;
		1758	REQ_SEND;
		1759	}
		1760
		1761	#if DB_VERSION_MINOR >= 6
		1762
		1763	void
		1764	db_exists (DB *db, DB_TXN_ornull *txn, SV *key, U32 flags = 0, SV *callback = 0)
		1765	PREINIT:
		1766	CALLBACK
		1767	CODE:
		1768	{
		1769	dREQ (REQ_DB_EXISTS, 2);
		1770	req->db = db;
		1771	req->txn = txn;
		1772	req->uint1 = flags;
		1773	sv_to_dbt (&req->dbt1, key);
		1774	REQ_SEND;
		1775	}
		1776
		1777	#endif
		1778
		1779	void
		1780	db_get (DB *db, DB_TXN_ornull *txn, SV *key, SV *data, U32 flags = 0, SV *callback = 0)
		1781	PREINIT:
		1782	CALLBACK
		1783	CODE:
		1784	if (SvREADONLY (data))
		1785	croak ("can't modify read-only data scalar in db_get");
		1786	{
		1787	dREQ (REQ_DB_GET, 2);
		1788	req->db = db;
		1789	req->txn = txn;
		1790	req->uint1 = flags;
		1791	sv_to_dbt (&req->dbt1, key);
		1792	req->dbt3.flags = DB_DBT_MALLOC;
		1793	req->sv3 = SvREFCNT_inc (data); SvREADONLY_on (data);
		1794	REQ_SEND;
		1795	}
		1796
		1797	void
		1798	db_pget (DB *db, DB_TXN_ornull *txn, SV *key, SV *pkey, SV *data, U32 flags = 0, SV *callback = 0)
		1799	PREINIT:
		1800	CALLBACK
		1801	CODE:
		1802	if (SvREADONLY (data))
		1803	croak ("can't modify read-only data scalar in db_pget");
		1804	{
		1805	dREQ (REQ_DB_PGET, 2);
		1806	req->db = db;
		1807	req->txn = txn;
		1808	req->uint1 = flags;
		1809	sv_to_dbt (&req->dbt1, key);
		1810	sv_to_dbt (&req->dbt2, pkey);
		1811	req->dbt3.flags = DB_DBT_MALLOC;
		1812	req->sv3 = SvREFCNT_inc (data); SvREADONLY_on (data);
		1813	REQ_SEND;
		1814	}
		1815
		1816	void
		1817	db_del (DB *db, DB_TXN_ornull *txn, SV *key, U32 flags = 0, SV *callback = 0)
		1818	PREINIT:
		1819	CALLBACK
		1820	CODE:
		1821	{
		1822	dREQ (REQ_DB_DEL, 2);
		1823	req->db = db;
		1824	req->txn = txn;
		1825	req->uint1 = flags;
		1826	sv_to_dbt (&req->dbt1, key);
		1827	REQ_SEND;
		1828	}
		1829
		1830	void
		1831	db_txn_commit (DB_TXN *txn, U32 flags = 0, SV *callback = 0)
		1832	PREINIT:
		1833	CALLBACK
		1834	CODE:
		1835	{
		1836	dREQ (REQ_TXN_COMMIT, 1);
		1837	req->txn = txn;
		1838	req->uint1 = flags;
		1839	REQ_SEND;
		1840	ptr_nuke (ST (0));
		1841	}
		1842
		1843	void
		1844	db_txn_abort (DB_TXN *txn, SV *callback = 0)
		1845	PREINIT:
		1846	CALLBACK
		1847	CODE:
		1848	{
		1849	dREQ (REQ_TXN_ABORT, 1);
		1850	req->txn = txn;
		1851	REQ_SEND;
		1852	ptr_nuke (ST (0));
		1853	}
		1854
		1855	void
		1856	db_txn_finish (DB_TXN *txn, U32 flags = 0, SV *callback = 0)
		1857	PREINIT:
		1858	CALLBACK
		1859	CODE:
		1860	{
		1861	dREQ (REQ_TXN_FINISH, 1);
		1862	req->txn = txn;
		1863	req->uint1 = flags;
		1864	REQ_SEND;
		1865	ptr_nuke (ST (0));
		1866	}
		1867
		1868	void
		1869	db_c_close (DBC *dbc, SV *callback = 0)
		1870	PREINIT:
		1871	CALLBACK
		1872	CODE:
		1873	{
		1874	dREQ (REQ_C_CLOSE, 1);
		1875	req->dbc = dbc;
		1876	REQ_SEND;
		1877	ptr_nuke (ST (0));
		1878	}
		1879
		1880	void
		1881	db_c_count (DBC *dbc, SV *count, U32 flags = 0, SV *callback = 0)
		1882	PREINIT:
		1883	CALLBACK
		1884	CODE:
		1885	{
		1886	dREQ (REQ_C_COUNT, 1);
		1887	req->dbc = dbc;
		1888	req->sv1 = SvREFCNT_inc (count);
		1889	REQ_SEND;
		1890	}
		1891
		1892	void
		1893	db_c_put (DBC *dbc, SV *key, SV *data, U32 flags = 0, SV *callback = 0)
		1894	PREINIT:
		1895	CALLBACK
		1896	CODE:
		1897	{
		1898	dREQ (REQ_C_PUT, 1);
		1899	req->dbc = dbc;
		1900	sv_to_dbt (&req->dbt1, key);
		1901	sv_to_dbt (&req->dbt2, data);
		1902	req->uint1 = flags;
		1903	REQ_SEND;
		1904	}
		1905
		1906	void
		1907	db_c_get (DBC *dbc, SV *key, SV *data, U32 flags = 0, SV *callback = 0)
		1908	PREINIT:
		1909	CALLBACK
		1910	CODE:
		1911	{
		1912	dREQ (REQ_C_GET, 1);
		1913	req->dbc = dbc;
		1914	req->uint1 = flags;
		1915	if ((flags & DB_SET) == DB_SET
		1916	|| (flags & DB_SET_RANGE) == DB_SET_RANGE)
		1917	sv_to_dbt (&req->dbt1, key);
		1918	else
		1919	req->dbt1.flags = DB_DBT_MALLOC;
		1920
		1921	req->sv1 = SvREFCNT_inc (key); SvREADONLY_on (key);
		1922
		1923	if ((flags & DB_GET_BOTH) == DB_GET_BOTH
		1924	|| (flags & DB_GET_BOTH_RANGE) == DB_GET_BOTH_RANGE)
		1925	sv_to_dbt (&req->dbt3, data);
		1926	else
		1927	req->dbt3.flags = DB_DBT_MALLOC;
		1928
		1929	req->sv3 = SvREFCNT_inc (data); SvREADONLY_on (data);
		1930	REQ_SEND;
		1931	}
		1932
		1933	void
		1934	db_c_pget (DBC *dbc, SV *key, SV *pkey, SV *data, U32 flags = 0, SV *callback = 0)
		1935	PREINIT:
		1936	CALLBACK
		1937	CODE:
		1938	{
		1939	dREQ (REQ_C_PGET, 1);
		1940	req->dbc = dbc;
		1941	req->uint1 = flags;
		1942	if ((flags & DB_SET) == DB_SET
		1943	|| (flags & DB_SET_RANGE) == DB_SET_RANGE)
		1944	sv_to_dbt (&req->dbt1, key);
		1945	else
		1946	req->dbt1.flags = DB_DBT_MALLOC;
		1947
		1948	req->sv1 = SvREFCNT_inc (key); SvREADONLY_on (key);
		1949
		1950	req->dbt2.flags = DB_DBT_MALLOC;
		1951	req->sv2 = SvREFCNT_inc (pkey); SvREADONLY_on (pkey);
		1952
		1953	if ((flags & DB_GET_BOTH) == DB_GET_BOTH
		1954	|| (flags & DB_GET_BOTH_RANGE) == DB_GET_BOTH_RANGE)
		1955	sv_to_dbt (&req->dbt3, data);
		1956	else
		1957	req->dbt3.flags = DB_DBT_MALLOC;
		1958
		1959	req->sv3 = SvREFCNT_inc (data); SvREADONLY_on (data);
		1960	REQ_SEND;
		1961	}
		1962
		1963	void
		1964	db_c_del (DBC *dbc, U32 flags = 0, SV *callback = 0)
		1965	PREINIT:
		1966	CALLBACK
		1967	CODE:
		1968	{
		1969	dREQ (REQ_C_DEL, 1);
		1970	req->dbc = dbc;
		1971	req->uint1 = flags;
		1972	REQ_SEND;
		1973	}
		1974
		1975
		1976	#if DB_VERSION_MINOR >= 3
		1977
		1978	void
		1979	db_sequence_open (DB_SEQUENCE *seq, DB_TXN_ornull *txnid, SV *key, U32 flags = 0, SV *callback = 0)
		1980	PREINIT:
		1981	CALLBACK
		1982	CODE:
		1983	{
		1984	dREQ (REQ_SEQ_OPEN, 2);
		1985	req->seq = seq;
		1986	req->txn = txnid;
		1987	req->uint1 = flags | DB_THREAD;
		1988	sv_to_dbt (&req->dbt1, key);
		1989	REQ_SEND;
		1990	}
		1991
		1992	void
		1993	db_sequence_close (DB_SEQUENCE *seq, U32 flags = 0, SV *callback = 0)
		1994	PREINIT:
		1995	CALLBACK
		1996	CODE:
		1997	{
		1998	dREQ (REQ_SEQ_CLOSE, 1);
		1999	req->seq = seq;
		2000	req->uint1 = flags;
		2001	REQ_SEND;
		2002	ptr_nuke (ST (0));
		2003	}
		2004
		2005	void
		2006	db_sequence_get (DB_SEQUENCE *seq, DB_TXN_ornull *txnid, int delta, SV *seq_value, U32 flags = DB_TXN_NOSYNC, SV *callback = 0)
		2007	PREINIT:
		2008	CALLBACK
		2009	CODE:
		2010	{
		2011	dREQ (REQ_SEQ_GET, 2);
		2012	req->seq = seq;
		2013	req->txn = txnid;
		2014	req->int1 = delta;
		2015	req->uint1 = flags;
		2016	req->sv1 = SvREFCNT_inc (seq_value); SvREADONLY_on (seq_value);
		2017	REQ_SEND;
		2018	}
		2019
		2020	void
		2021	db_sequence_remove (DB_SEQUENCE *seq, DB_TXN_ornull *txnid = 0, U32 flags = 0, SV *callback = 0)
		2022	PREINIT:
		2023	CALLBACK
		2024	CODE:
		2025	{
		2026	dREQ (REQ_SEQ_REMOVE, 2);
		2027	req->seq = seq;
		2028	req->txn = txnid;
		2029	req->uint1 = flags;
		2030	REQ_SEND;
		2031	}
		2032
		2033	#endif
		2034
		2035
		2036	MODULE = BDB PACKAGE = BDB::Env
		2037
		2038	void
		2039	DESTROY (DB_ENV_ornuked *env)
		2040	CODE:
		2041	if (env)
		2042	env->close (env, 0);
		2043
		2044	int set_data_dir (DB_ENV *env, const char *dir)
		2045	CODE:
		2046	RETVAL = env->set_data_dir (env, dir);
		2047	OUTPUT:
		2048	RETVAL
		2049
		2050	int set_tmp_dir (DB_ENV *env, const char *dir)
		2051	CODE:
		2052	RETVAL = env->set_tmp_dir (env, dir);
		2053	OUTPUT:
		2054	RETVAL
		2055
		2056	int set_lg_dir (DB_ENV *env, const char *dir)
		2057	CODE:
		2058	RETVAL = env->set_lg_dir (env, dir);
		2059	OUTPUT:
		2060	RETVAL
		2061
		2062	int set_shm_key (DB_ENV *env, long shm_key)
		2063	CODE:
		2064	RETVAL = env->set_shm_key (env, shm_key);
		2065	OUTPUT:
		2066	RETVAL
		2067
		2068	int set_cachesize (DB_ENV *env, U32 gbytes, U32 bytes, int ncache = 0)
		2069	CODE:
		2070	RETVAL = env->set_cachesize (env, gbytes, bytes, ncache);
		2071	OUTPUT:
		2072	RETVAL
		2073
		2074	int set_flags (DB_ENV *env, U32 flags, int onoff = 1)
		2075	CODE:
		2076	RETVAL = env->set_flags (env, flags, onoff);
		2077	OUTPUT:
		2078	RETVAL
		2079
		2080	#if DB_VERSION_MINOR >= 7
		2081
		2082	int set_intermediate_dir_mode (DB_ENV *env, const char *mode)
		2083	CODE:
		2084	RETVAL = env->set_intermediate_dir_mode (env, mode);
		2085	OUTPUT:
		2086	RETVAL
		2087
		2088	int log_set_config (DB_ENV *env, U32 flags, int onoff = 1)
		2089	CODE:
		2090	RETVAL = env->log_set_config (env, flags, onoff);
		2091	OUTPUT:
		2092	RETVAL
		2093
		2094	#endif
		2095
		2096
		2097	void set_errfile (DB_ENV *env, FILE *errfile = 0)
		2098	CODE:
		2099	env->set_errfile (env, errfile);
		2100
		2101	void set_msgfile (DB_ENV *env, FILE *msgfile = 0)
		2102	CODE:
		2103	env->set_msgfile (env, msgfile);
		2104
		2105	int set_verbose (DB_ENV *env, U32 which = -1, int onoff = 1)
		2106	CODE:
		2107	RETVAL = env->set_verbose (env, which, onoff);
		2108	OUTPUT:
		2109	RETVAL
		2110
		2111	int set_encrypt (DB_ENV *env, const char *password, U32 flags = 0)
		2112	CODE:
		2113	RETVAL = env->set_encrypt (env, password, flags);
		2114	OUTPUT:
		2115	RETVAL
		2116
		2117	int set_timeout (DB_ENV *env, NV timeout, U32 flags = DB_SET_TXN_TIMEOUT)
		2118	CODE:
		2119	RETVAL = env->set_timeout (env, timeout * 1000000, flags);
		2120	OUTPUT:
		2121	RETVAL
		2122
		2123	int set_mp_max_openfd (DB_ENV *env, int maxopenfd);
		2124	CODE:
		2125	RETVAL = env->set_mp_max_openfd (env, maxopenfd);
		2126	OUTPUT:
		2127	RETVAL
		2128
		2129	int set_mp_max_write (DB_ENV *env, int maxwrite, int maxwrite_sleep);
		2130	CODE:
		2131	RETVAL = env->set_mp_max_write (env, maxwrite, maxwrite_sleep);
		2132	OUTPUT:
		2133	RETVAL
		2134
		2135	int set_mp_mmapsize (DB_ENV *env, int mmapsize_mb)
		2136	CODE:
		2137	RETVAL = env->set_mp_mmapsize (env, ((size_t)mmapsize_mb) << 20);
		2138	OUTPUT:
		2139	RETVAL
		2140
		2141	int set_lk_detect (DB_ENV *env, U32 detect = DB_LOCK_DEFAULT)
		2142	CODE:
		2143	RETVAL = env->set_lk_detect (env, detect);
		2144	OUTPUT:
		2145	RETVAL
		2146
		2147	int set_lk_max_lockers (DB_ENV *env, U32 max)
		2148	CODE:
		2149	RETVAL = env->set_lk_max_lockers (env, max);
		2150	OUTPUT:
		2151	RETVAL
		2152
		2153	int set_lk_max_locks (DB_ENV *env, U32 max)
		2154	CODE:
		2155	RETVAL = env->set_lk_max_locks (env, max);
		2156	OUTPUT:
		2157	RETVAL
		2158
		2159	int set_lk_max_objects (DB_ENV *env, U32 max)
		2160	CODE:
		2161	RETVAL = env->set_lk_max_objects (env, max);
		2162	OUTPUT:
		2163	RETVAL
		2164
		2165	int set_lg_bsize (DB_ENV *env, U32 max)
		2166	CODE:
		2167	RETVAL = env->set_lg_bsize (env, max);
		2168	OUTPUT:
		2169	RETVAL
		2170
		2171	int set_lg_max (DB_ENV *env, U32 max)
		2172	CODE:
		2173	RETVAL = env->set_lg_max (env, max);
		2174	OUTPUT:
		2175	RETVAL
		2176
		2177	#if DB_VERSION_MINOR >= 4
		2178
		2179	int mutex_set_max (DB_ENV *env, U32 max)
		2180	CODE:
		2181	RETVAL = env->mutex_set_max (env, max);
		2182	OUTPUT:
		2183	RETVAL
		2184
		2185	int mutex_set_increment (DB_ENV *env, U32 increment)
		2186	CODE:
		2187	RETVAL = env->mutex_set_increment (env, increment);
		2188	OUTPUT:
		2189	RETVAL
		2190
		2191	int mutex_set_tas_spins (DB_ENV *env, U32 tas_spins)
		2192	CODE:
		2193	RETVAL = env->mutex_set_tas_spins (env, tas_spins);
		2194	OUTPUT:
		2195	RETVAL
		2196
		2197	int mutex_set_align (DB_ENV *env, U32 align)
		2198	CODE:
		2199	RETVAL = env->mutex_set_align (env, align);
		2200	OUTPUT:
		2201	RETVAL
		2202
		2203	#endif
		2204
		2205	DB_TXN *
		2206	txn_begin (DB_ENV *env, DB_TXN_ornull *parent = 0, U32 flags = 0)
		2207	CODE:
		2208	errno = env->txn_begin (env, parent, &RETVAL, flags);
		2209	if (errno)
		2210	croak ("DB_ENV->txn_begin: %s", db_strerror (errno));
		2211	OUTPUT:
		2212	RETVAL
		2213
		2214	#if DB_VERSION_MINOR >= 5
		2215
		2216	DB_TXN *
		2217	cdsgroup_begin (DB_ENV *env)
		2218	CODE:
		2219	errno = env->cdsgroup_begin (env, &RETVAL);
		2220	if (errno)
		2221	croak ("DB_ENV->cdsgroup_begin: %s", db_strerror (errno));
		2222	OUTPUT:
		2223	RETVAL
		2224
		2225	#endif
		2226
		2227	MODULE = BDB PACKAGE = BDB::Db
		2228
		2229	void
		2230	DESTROY (DB_ornuked *db)
		2231	CODE:
		2232	if (db)
		2233	{
		2234	SV *env = (SV *)db->app_private;
		2235	db->close (db, 0);
		2236	SvREFCNT_dec (env);
		2237	}
		2238
		2239	int set_cachesize (DB *db, U32 gbytes, U32 bytes, int ncache = 0)
		2240	CODE:
		2241	RETVAL = db->set_cachesize (db, gbytes, bytes, ncache);
		2242	OUTPUT:
		2243	RETVAL
		2244
		2245	int set_flags (DB *db, U32 flags)
		2246	CODE:
		2247	RETVAL = db->set_flags (db, flags);
		2248	OUTPUT:
		2249	RETVAL
		2250
		2251	int set_encrypt (DB *db, const char *password, U32 flags)
		2252	CODE:
		2253	RETVAL = db->set_encrypt (db, password, flags);
		2254	OUTPUT:
		2255	RETVAL
		2256
		2257	int set_lorder (DB *db, int lorder)
		2258	CODE:
		2259	RETVAL = db->set_lorder (db, lorder);
		2260	OUTPUT:
		2261	RETVAL
		2262
		2263	int set_bt_minkey (DB *db, U32 minkey)
		2264	CODE:
		2265	RETVAL = db->set_bt_minkey (db, minkey);
		2266	OUTPUT:
		2267	RETVAL
		2268
		2269	int set_re_delim (DB *db, int delim)
		2270	CODE:
		2271	RETVAL = db->set_re_delim (db, delim);
		2272	OUTPUT:
		2273	RETVAL
		2274
		2275	int set_re_pad (DB *db, int re_pad)
		2276	CODE:
		2277	RETVAL = db->set_re_pad (db, re_pad);
		2278	OUTPUT:
		2279	RETVAL
		2280
		2281	int set_re_source (DB *db, char *source)
		2282	CODE:
		2283	RETVAL = db->set_re_source (db, source);
		2284	OUTPUT:
		2285	RETVAL
		2286
		2287	int set_re_len (DB *db, U32 re_len)
		2288	CODE:
		2289	RETVAL = db->set_re_len (db, re_len);
		2290	OUTPUT:
		2291	RETVAL
		2292
		2293	int set_h_ffactor (DB *db, U32 h_ffactor)
		2294	CODE:
		2295	RETVAL = db->set_h_ffactor (db, h_ffactor);
		2296	OUTPUT:
		2297	RETVAL
		2298
		2299	int set_h_nelem (DB *db, U32 h_nelem)
		2300	CODE:
		2301	RETVAL = db->set_h_nelem (db, h_nelem);
		2302	OUTPUT:
		2303	RETVAL
		2304
		2305	int set_q_extentsize (DB *db, U32 extentsize)
		2306	CODE:
		2307	RETVAL = db->set_q_extentsize (db, extentsize);
		2308	OUTPUT:
		2309	RETVAL
		2310
		2311	DBC *
		2312	cursor (DB *db, DB_TXN_ornull *txn = 0, U32 flags = 0)
		2313	CODE:
		2314	errno = db->cursor (db, txn, &RETVAL, flags);
		2315	if (errno)
		2316	croak ("DB->cursor: %s", db_strerror (errno));
		2317	OUTPUT:
		2318	RETVAL
		2319
		2320	#if DB_VERSION_MINOR >= 3
		2321
		2322	DB_SEQUENCE *
		2323	sequence (DB *db, U32 flags = 0)
		2324	CODE:
		2325	{
		2326	errno = db_sequence_create (&RETVAL, db, flags);
		2327	if (errno)
		2328	croak ("db_sequence_create: %s", db_strerror (errno));
		2329	}
		2330	OUTPUT:
		2331	RETVAL
		2332
		2333	#endif
		2334
		2335
		2336	MODULE = BDB PACKAGE = BDB::Txn
		2337
		2338	void
		2339	DESTROY (DB_TXN_ornuked *txn)
		2340	CODE:
		2341	if (txn)
		2342	txn->abort (txn);
		2343
		2344	int set_timeout (DB_TXN *txn, NV timeout, U32 flags = DB_SET_TXN_TIMEOUT)
		2345	CODE:
		2346	RETVAL = txn->set_timeout (txn, timeout * 1000000, flags);
		2347	OUTPUT:
		2348	RETVAL
		2349
		2350	int failed (DB_TXN *txn)
		2351	CODE:
		2352	RETVAL = !!(txn->flags & TXN_DEADLOCK);
		2353	OUTPUT:
		2354	RETVAL
		2355
		2356
		2357	MODULE = BDB PACKAGE = BDB::Cursor
		2358
		2359	void
		2360	DESTROY (DBC_ornuked *dbc)
		2361	CODE:
		2362	if (dbc)
		2363	dbc->c_close (dbc);
		2364
		2365	#if DB_VERSION_MINOR >= 6
		2366
		2367	int set_priority (DBC *dbc, int priority)
		2368	CODE:
		2369	dbc->set_priority (dbc, priority);
		2370
		2371	#endif
		2372
		2373	#if DB_VERSION_MINOR >= 3
		2374
		2375	MODULE = BDB PACKAGE = BDB::Sequence
		2376
		2377	void
		2378	DESTROY (DB_SEQUENCE_ornuked *seq)
		2379	CODE:
		2380	if (seq)
		2381	seq->close (seq, 0);
		2382
		2383	int initial_value (DB_SEQUENCE *seq, db_seq_t value)
		2384	CODE:
		2385	RETVAL = seq->initial_value (seq, value);
		2386	OUTPUT:
		2387	RETVAL
		2388
		2389	int set_cachesize (DB_SEQUENCE *seq, U32 size)
		2390	CODE:
		2391	RETVAL = seq->set_cachesize (seq, size);
		2392	OUTPUT:
		2393	RETVAL
		2394
		2395	int set_flags (DB_SEQUENCE *seq, U32 flags)
		2396	CODE:
		2397	RETVAL = seq->set_flags (seq, flags);
		2398	OUTPUT:
		2399	RETVAL
		2400
		2401	int set_range (DB_SEQUENCE *seq, db_seq_t min, db_seq_t max)
		2402	CODE:
		2403	RETVAL = seq->set_range (seq, min, max);
		2404	OUTPUT:
		2405	RETVAL
		2406
		2407	#endif
		2408
		2409

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