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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 1.46 by root, Wed Jul 9 21:16:14 2008 UTC

1	/* solaris */	1	#include "xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include <pthread.h>	9	// perl stupidly defines these as macros, breaking
		10	// lots and lots of code.
		11	#undef open
		12	#undef close
		13	#undef abort
		14	#undef malloc
		15	#undef free
		16	#undef send
18		17
19	#include <stddef.h>	18	#include <stddef.h>
20	#include <stdlib.h>	19	#include <stdlib.h>
21	#include <errno.h>	20	#include <errno.h>
22	#include <sys/time.h>
23	#include <sys/select.h>
24	#include <sys/types.h>	21	#include <sys/types.h>
25	#include <sys/stat.h>
26	#include <limits.h>	22	#include <limits.h>
27	#include <unistd.h>
28	#include <fcntl.h>	23	#include <fcntl.h>
29	#include <signal.h>	24
		25	#ifndef _WIN32
		26	# include <sys/time.h>
		27	# include <unistd.h>
		28	#endif
		29
30	#include <sched.h>	30	#include <db.h>
		31
		32	#if DB_VERSION_MAJOR < 4 || (DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR < 4)
		33	# error you need Berkeley DB 4.4 or newer installed
		34	#endif
31		35
32	/* number of seconds after which idle threads exit */	36	/* number of seconds after which idle threads exit */
33	#define IDLE_TIMEOUT 10	37	#define IDLE_TIMEOUT 10
34		38
35	/* wether word reads are potentially non-atomic.	39	typedef DB_ENV DB_ENV_ornull;
36	* this is conservatice, likely most arches this runs	40	typedef DB_TXN DB_TXN_ornull;
37	* on have atomic word read/writes.	41	typedef DBC DBC_ornull;
38	*/	42	typedef DB DB_ornull;
39	#ifndef WORDACCESS_UNSAFE	43	typedef DB_SEQUENCE DB_SEQUENCE_ornull;
40	# if __i386 || __x86_64	44
41	# define WORDACCESS_UNSAFE 0	45	typedef DB_ENV DB_ENV_ornuked;
42	# else	46	typedef DB_TXN DB_TXN_ornuked;
43	# define WORDACCESS_UNSAFE 1	47	typedef DBC DBC_ornuked;
44	# endif	48	typedef DB DB_ornuked;
		49	typedef DB_SEQUENCE DB_SEQUENCE_ornuked;
		50
		51	typedef SV SV8; /* byte-sv, used for argument-checking */
		52	typedef char *bdb_filename;
		53
		54	static SV *prepare_cb;
		55
		56	#if DB_VERSION_MINOR >= 6
		57	# define c_close close
		58	# define c_count count
		59	# define c_del del
		60	# define c_dup dup
		61	# define c_get get
		62	# define c_pget pget
		63	# define c_put put
45	#endif	64	#endif
46		65
47	typedef SV SV8; /* byte-sv, used for argument-checking */	66	static char *
		67	get_bdb_filename (SV *sv)
		68	{
		69	if (!SvOK (sv))
		70	return 0;
48		71
		72	#if _WIN32
		73	/* win32 madness + win32 perl absolutely brokenness make for horrible hacks */
		74	{
		75	STRLEN len;
		76	char *src = SvPVbyte (sv, len);
		77	SV *t1 = sv_newmortal ();
		78	SV *t2 = sv_newmortal ();
		79
		80	sv_upgrade (t1, SVt_PV); SvPOK_only (t1); SvGROW (t1, len * 16 + 1);
		81	sv_upgrade (t2, SVt_PV); SvPOK_only (t2); SvGROW (t2, len * 16 + 1);
		82
		83	len = MultiByteToWideChar (CP_ACP, 0, src, len, (WCHAR *)SvPVX (t1), SvLEN (t1) / sizeof (WCHAR));
		84	len = WideCharToMultiByte (CP_UTF8, 0, (WCHAR *)SvPVX (t1), len, SvPVX (t2), SvLEN (t2), 0, 0);
		85	SvPOK_only (t2);
		86	SvPVX (t2)[len] = 0;
		87	SvCUR_set (t2, len);
		88
		89	return SvPVX (t2);
		90	}
		91	#else
		92	return SvPVbyte_nolen (sv);
		93	#endif
		94	}
		95
		96	static void
		97	debug_errcall (const DB_ENV *dbenv, const char *errpfx, const char *msg)
		98	{
		99	printf ("err[%s]\n", msg);
		100	}
		101
		102	static void
		103	debug_msgcall (const DB_ENV *dbenv, const char *msg)
		104	{
		105	printf ("msg[%s]\n", msg);
		106	}
		107
		108	static char *
		109	strdup_ornull (const char *s)
		110	{
		111	return s ? strdup (s) : 0;
		112	}
		113
		114	static void
		115	sv_to_dbt (DBT *dbt, SV *sv)
		116	{
		117	STRLEN len;
		118	char *data = SvPVbyte (sv, len);
		119
		120	dbt->data = malloc (len);
		121	memcpy (dbt->data, data, len);
		122	dbt->size = len;
		123	dbt->flags = DB_DBT_REALLOC;
		124	}
		125
		126	static void
		127	dbt_to_sv (SV *sv, DBT *dbt)
		128	{
		129	if (sv)
		130	{
		131	SvREADONLY_off (sv);
		132	sv_setpvn_mg (sv, dbt->data, dbt->size);
		133	SvREFCNT_dec (sv);
		134	}
		135
		136	free (dbt->data);
		137	}
		138
49	enum {	139	enum {
50	REQ_QUIT,	140	REQ_QUIT,
		141	REQ_ENV_OPEN, REQ_ENV_CLOSE, REQ_ENV_TXN_CHECKPOINT, REQ_ENV_LOCK_DETECT,
		142	REQ_ENV_MEMP_SYNC, REQ_ENV_MEMP_TRICKLE, REQ_ENV_DBREMOVE, REQ_ENV_DBRENAME,
		143	REQ_DB_OPEN, REQ_DB_CLOSE, REQ_DB_COMPACT, REQ_DB_SYNC, REQ_DB_UPGRADE,
		144	REQ_DB_PUT, REQ_DB_EXISTS, REQ_DB_GET, REQ_DB_PGET, REQ_DB_DEL, REQ_DB_KEY_RANGE,
		145	REQ_TXN_COMMIT, REQ_TXN_ABORT, REQ_TXN_FINISH,
		146	REQ_C_CLOSE, REQ_C_COUNT, REQ_C_PUT, REQ_C_GET, REQ_C_PGET, REQ_C_DEL,
		147	REQ_SEQ_OPEN, REQ_SEQ_CLOSE, REQ_SEQ_GET, REQ_SEQ_REMOVE,
51	};	148	};
52		149
53	#define AIO_CB \	150	typedef struct bdb_cb
		151	{
54	struct aio_cb *volatile next; \	152	struct bdb_cb *volatile next;
55	SV *callback; \	153	SV *callback;
56	int type, pri	154	int type, pri, result;
57		155
58	typedef struct aio_cb	156	DB_ENV *env;
59	{	157	DB *db;
60	AIO_CB;	158	DB_TXN *txn;
61	} aio_cb;	159	DBC *dbc;
62		160
		161	UV uv1;
		162	int int1, int2;
		163	U32 uint1, uint2;
		164	char *buf1, *buf2, *buf3;
		165	SV *sv1, *sv2, *sv3;
		166
		167	DBT dbt1, dbt2, dbt3;
		168	DB_KEY_RANGE key_range;
		169	DB_SEQUENCE *seq;
		170	db_seq_t seq_t;
		171	} bdb_cb;
		172
63	typedef aio_cb *aio_req;	173	typedef bdb_cb *bdb_req;
64		174
65	enum {	175	enum {
66	PRI_MIN = -4,	176	PRI_MIN = -4,
67	PRI_MAX = 4,	177	PRI_MAX = 4,
68		178
…		…
71	NUM_PRI = PRI_MAX + PRI_BIAS + 1,	181	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
72	};	182	};
73		183
74	#define AIO_TICKS ((1000000 + 1023) >> 10)	184	#define AIO_TICKS ((1000000 + 1023) >> 10)
75		185
		186	static SV *on_next_submit;
		187
76	static unsigned int max_poll_time = 0;	188	static unsigned int max_poll_time = 0;
77	static unsigned int max_poll_reqs = 0;	189	static unsigned int max_poll_reqs = 0;
78		190
79	/* calculcate time difference in ~1/AIO_TICKS of a second */	191	/* calculcate time difference in ~1/AIO_TICKS of a second */
80	static int tvdiff (struct timeval *tv1, struct timeval *tv2)	192	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
…		…
85		197
86	static int next_pri = DEFAULT_PRI + PRI_BIAS;	198	static int next_pri = DEFAULT_PRI + PRI_BIAS;
87		199
88	static unsigned int started, idle, wanted;	200	static unsigned int started, idle, wanted;
89		201
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 */	202	/* worker threads management */
100	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;	203	static mutex_t wrklock = X_MUTEX_INIT;
101		204
102	typedef struct worker {	205	typedef struct worker {
103	/* locked by wrklock */	206	/* locked by wrklock */
104	struct worker *prev, *next;	207	struct worker *prev, *next;
105		208
106	pthread_t tid;	209	thread_t tid;
107		210
108	/* locked by reslock, reqlock or wrklock */	211	/* locked by reslock, reqlock or wrklock */
109	aio_req req; /* currently processed request */	212	bdb_req req; /* currently processed request */
110	void *dbuf;	213	void *dbuf;
111	DIR *dirp;	214	DIR *dirp;
112	} worker;	215	} worker;
113		216
114	static worker wrk_first = { &wrk_first, &wrk_first, 0 };	217	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
…		…
126	}	229	}
127		230
128	static volatile unsigned int nreqs, nready, npending;	231	static volatile unsigned int nreqs, nready, npending;
129	static volatile unsigned int max_idle = 4;	232	static volatile unsigned int max_idle = 4;
130	static volatile unsigned int max_outstanding = 0xffffffff;	233	static volatile unsigned int max_outstanding = 0xffffffff;
131	static int respipe [2];	234	static int respipe_osf [2], respipe [2] = { -1, -1 };
132		235
133	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	236	static mutex_t reslock = X_MUTEX_INIT;
134	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	237	static mutex_t reqlock = X_MUTEX_INIT;
135	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	238	static cond_t reqwait = X_COND_INIT;
136		239
137	#if WORDACCESS_UNSAFE	240	#if WORDACCESS_UNSAFE
138		241
139	static unsigned int get_nready ()	242	static unsigned int get_nready (void)
140	{	243	{
141	unsigned int retval;	244	unsigned int retval;
142		245
143	LOCK (reqlock);	246	X_LOCK (reqlock);
144	retval = nready;	247	retval = nready;
145	UNLOCK (reqlock);	248	X_UNLOCK (reqlock);
146		249
147	return retval;	250	return retval;
148	}	251	}
149		252
150	static unsigned int get_npending ()	253	static unsigned int get_npending (void)
151	{	254	{
152	unsigned int retval;	255	unsigned int retval;
153		256
154	LOCK (reslock);	257	X_LOCK (reslock);
155	retval = npending;	258	retval = npending;
156	UNLOCK (reslock);	259	X_UNLOCK (reslock);
157		260
158	return retval;	261	return retval;
159	}	262	}
160		263
161	static unsigned int get_nthreads ()	264	static unsigned int get_nthreads (void)
162	{	265	{
163	unsigned int retval;	266	unsigned int retval;
164		267
165	LOCK (wrklock);	268	X_LOCK (wrklock);
166	retval = started;	269	retval = started;
167	UNLOCK (wrklock);	270	X_UNLOCK (wrklock);
168		271
169	return retval;	272	return retval;
170	}	273	}
171		274
172	#else	275	#else
…		…
181	* a somewhat faster data structure might be nice, but	284	* a somewhat faster data structure might be nice, but
182	* with 8 priorities this actually needs <20 insns	285	* with 8 priorities this actually needs <20 insns
183	* per shift, the most expensive operation.	286	* per shift, the most expensive operation.
184	*/	287	*/
185	typedef struct {	288	typedef struct {
186	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */	289	bdb_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
187	int size;	290	int size;
188	} reqq;	291	} reqq;
189		292
190	static reqq req_queue;	293	static reqq req_queue;
191	static reqq res_queue;	294	static reqq res_queue;
192		295
193	int reqq_push (reqq *q, aio_req req)	296	int reqq_push (reqq *q, bdb_req req)
194	{	297	{
195	int pri = req->pri;	298	int pri = req->pri;
196	req->next = 0;	299	req->next = 0;
197		300
198	if (q->qe[pri])	301	if (q->qe[pri])
…		…
204	q->qe[pri] = q->qs[pri] = req;	307	q->qe[pri] = q->qs[pri] = req;
205		308
206	return q->size++;	309	return q->size++;
207	}	310	}
208		311
209	aio_req reqq_shift (reqq *q)	312	bdb_req reqq_shift (reqq *q)
210	{	313	{
211	int pri;	314	int pri;
212		315
213	if (!q->size)	316	if (!q->size)
214	return 0;	317	return 0;
215		318
216	--q->size;	319	--q->size;
217		320
218	for (pri = NUM_PRI; pri--; )	321	for (pri = NUM_PRI; pri--; )
219	{	322	{
220	aio_req req = q->qs[pri];	323	bdb_req req = q->qs[pri];
221		324
222	if (req)	325	if (req)
223	{	326	{
224	if (!(q->qs[pri] = req->next))	327	if (!(q->qs[pri] = req->next))
225	q->qe[pri] = 0;	328	q->qe[pri] = 0;
…		…
229	}	332	}
230		333
231	abort ();	334	abort ();
232	}	335	}
233		336
234	static int poll_cb ();	337	static int poll_cb (void);
235	static int req_invoke (aio_req req);
236	static void req_free (aio_req req);	338	static void req_free (bdb_req req);
237	static void req_cancel (aio_req req);	339	static void req_cancel (bdb_req req);
238		340
239	static int req_invoke (aio_req req)	341	static int req_invoke (bdb_req req)
240	{	342	{
241	dSP;	343	dSP;
242		344
243	if (SvOK (req->callback))	345	if (req->callback)
244	{	346	{
245	ENTER;	347	ENTER;
246	SAVETMPS;	348	SAVETMPS;
247	PUSHMARK (SP);	349	PUSHMARK (SP);
248	EXTEND (SP, 1);
249		350
250	switch (req->type)	351	switch (req->type)
251	{	352	{
		353	case REQ_DB_CLOSE:
		354	SvREFCNT_dec (req->sv1);
		355	break;
		356
		357	case REQ_DB_GET:
		358	case REQ_DB_PGET:
		359	dbt_to_sv (req->sv3, &req->dbt3);
		360	break;
		361
		362	case REQ_C_GET:
		363	case REQ_C_PGET:
		364	dbt_to_sv (req->sv1, &req->dbt1);
		365	dbt_to_sv (req->sv2, &req->dbt2);
		366	dbt_to_sv (req->sv3, &req->dbt3);
		367	break;
		368
		369	case REQ_DB_PUT:
		370	case REQ_C_PUT:
		371	dbt_to_sv (0, &req->dbt1);
		372	dbt_to_sv (0, &req->dbt2);
		373	break;
		374
		375	case REQ_DB_KEY_RANGE:
		376	{
		377	AV *av = newAV ();
		378
		379	av_push (av, newSVnv (req->key_range.less));
		380	av_push (av, newSVnv (req->key_range.equal));
		381	av_push (av, newSVnv (req->key_range.greater));
		382
		383	SvREADONLY_off (req->sv1);
		384	sv_setsv_mg (req->sv1, newRV_noinc ((SV *)av));
		385	SvREFCNT_dec (req->sv1);
		386	}
		387	break;
		388
		389	case REQ_SEQ_GET:
		390	SvREADONLY_off (req->sv1);
		391
		392	if (sizeof (IV) > 4)
		393	sv_setiv_mg (req->sv1, (IV)req->seq_t);
		394	else
		395	sv_setnv_mg (req->sv1, (NV)req->seq_t);
		396
		397	SvREFCNT_dec (req->sv1);
		398	break;
252	}	399	}
		400
		401	errno = req->result;
253		402
254	PUTBACK;	403	PUTBACK;
255	call_sv (req->callback, G_VOID | G_EVAL);	404	call_sv (req->callback, G_VOID | G_EVAL);
256	SPAGAIN;	405	SPAGAIN;
257		406
…		…
260	}	409	}
261		410
262	return !SvTRUE (ERRSV);	411	return !SvTRUE (ERRSV);
263	}	412	}
264		413
265	static void req_free (aio_req req)	414	static void req_free (bdb_req req)
266	{	415	{
		416	SvREFCNT_dec (req->callback);
		417
		418	free (req->buf1);
		419	free (req->buf2);
		420	free (req->buf3);
		421
267	Safefree (req);	422	Safefree (req);
268	}	423	}
269		424
270	static void *aio_proc(void *arg);	425	#ifdef USE_SOCKETS_AS_HANDLES
		426	# define TO_SOCKET(x) (win32_get_osfhandle (x))
		427	#else
		428	# define TO_SOCKET(x) (x)
		429	#endif
		430
		431	static void
		432	create_respipe (void)
		433	{
		434	#ifdef _WIN32
		435	int arg; /* argg */
		436	#endif
		437	int old_readfd = respipe [0];
		438
		439	if (respipe [1] >= 0)
		440	respipe_close (TO_SOCKET (respipe [1]));
		441
		442	#ifdef _WIN32
		443	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		444	#else
		445	if (pipe (respipe))
		446	#endif
		447	croak ("unable to initialize result pipe");
		448
		449	if (old_readfd >= 0)
		450	{
		451	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
		452	croak ("unable to initialize result pipe(2)");
		453
		454	respipe_close (respipe [0]);
		455	respipe [0] = old_readfd;
		456	}
		457
		458	#ifdef _WIN32
		459	arg = 1;
		460	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		461	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		462	#else
		463	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		464	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
		465	#endif
		466	croak ("unable to initialize result pipe(3)");
		467
		468	respipe_osf [0] = TO_SOCKET (respipe [0]);
		469	respipe_osf [1] = TO_SOCKET (respipe [1]);
		470	}
		471
		472	X_THREAD_PROC (bdb_proc);
271		473
272	static void start_thread (void)	474	static void start_thread (void)
273	{	475	{
274	sigset_t fullsigset, oldsigset;
275	pthread_attr_t attr;
276
277	worker *wrk = calloc (1, sizeof (worker));	476	worker *wrk = calloc (1, sizeof (worker));
278		477
279	if (!wrk)	478	if (!wrk)
280	croak ("unable to allocate worker thread data");	479	croak ("unable to allocate worker thread data");
281		480
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);	481	X_LOCK (wrklock);
291	pthread_sigmask (SIG_SETMASK, &fullsigset, &oldsigset);
292
293	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	482	if (thread_create (&wrk->tid, bdb_proc, (void *)wrk))
294	{	483	{
295	wrk->prev = &wrk_first;	484	wrk->prev = &wrk_first;
296	wrk->next = wrk_first.next;	485	wrk->next = wrk_first.next;
297	wrk_first.next->prev = wrk;	486	wrk_first.next->prev = wrk;
298	wrk_first.next = wrk;	487	wrk_first.next = wrk;
299	++started;	488	++started;
300	}	489	}
301	else	490	else
302	free (wrk);	491	free (wrk);
303		492
304	pthread_sigmask (SIG_SETMASK, &oldsigset, 0);
305	UNLOCK (wrklock);	493	X_UNLOCK (wrklock);
306	}	494	}
307		495
308	static void maybe_start_thread ()	496	static void maybe_start_thread (void)
309	{	497	{
310	if (get_nthreads () >= wanted)	498	if (get_nthreads () >= wanted)
311	return;	499	return;
312		500
313	/* todo: maybe use idle here, but might be less exact */	501	/* todo: maybe use idle here, but might be less exact */
…		…
315	return;	503	return;
316		504
317	start_thread ();	505	start_thread ();
318	}	506	}
319		507
320	static void req_send (aio_req req)	508	static void req_send (bdb_req req)
321	{	509	{
		510	SV *wait_callback = 0;
		511
		512	if (on_next_submit)
		513	{
		514	dSP;
		515	SV *cb = sv_2mortal (on_next_submit);
		516
		517	on_next_submit = 0;
		518
		519	PUSHMARK (SP);
		520	PUTBACK;
		521	call_sv (cb, G_DISCARD | G_EVAL);
		522	}
		523
		524	// synthesize callback if none given
		525	if (!req->callback)
		526	{
		527	int count;
		528
		529	dSP;
		530	PUSHMARK (SP);
		531	PUTBACK;
		532	count = call_sv (prepare_cb, G_ARRAY);
		533	SPAGAIN;
		534
		535	if (count != 2)
		536	croak ("prepare callback must return exactly two values\n");
		537
		538	wait_callback = POPs;
		539	SvREFCNT_dec (req->callback);
		540	req->callback = SvREFCNT_inc (POPs);
		541	}
		542
322	++nreqs;	543	++nreqs;
323		544
324	LOCK (reqlock);	545	X_LOCK (reqlock);
325	++nready;	546	++nready;
326	reqq_push (&req_queue, req);	547	reqq_push (&req_queue, req);
327	pthread_cond_signal (&reqwait);	548	X_COND_SIGNAL (reqwait);
328	UNLOCK (reqlock);	549	X_UNLOCK (reqlock);
329		550
330	maybe_start_thread ();	551	maybe_start_thread ();
		552
		553	if (wait_callback)
		554	{
		555	dSP;
		556	PUSHMARK (SP);
		557	PUTBACK;
		558	call_sv (wait_callback, G_DISCARD);
		559	}
331	}	560	}
332		561
333	static void end_thread (void)	562	static void end_thread (void)
334	{	563	{
335	aio_req req;	564	bdb_req req;
336		565
337	Newz (0, req, 1, aio_cb);	566	Newz (0, req, 1, bdb_cb);
338		567
339	req->type = REQ_QUIT;	568	req->type = REQ_QUIT;
340	req->pri = PRI_MAX + PRI_BIAS;	569	req->pri = PRI_MAX + PRI_BIAS;
341		570
342	LOCK (reqlock);	571	X_LOCK (reqlock);
343	reqq_push (&req_queue, req);	572	reqq_push (&req_queue, req);
344	pthread_cond_signal (&reqwait);	573	X_COND_SIGNAL (reqwait);
345	UNLOCK (reqlock);	574	X_UNLOCK (reqlock);
346		575
347	LOCK (wrklock);	576	X_LOCK (wrklock);
348	--started;	577	--started;
349	UNLOCK (wrklock);	578	X_UNLOCK (wrklock);
350	}	579	}
351		580
352	static void set_max_idle (int nthreads)	581	static void set_max_idle (int nthreads)
353	{	582	{
354	if (WORDACCESS_UNSAFE) LOCK (reqlock);	583	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
355	max_idle = nthreads <= 0 ? 1 : nthreads;	584	max_idle = nthreads <= 0 ? 1 : nthreads;
356	if (WORDACCESS_UNSAFE) UNLOCK (reqlock);	585	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
357	}	586	}
358		587
359	static void min_parallel (int nthreads)	588	static void min_parallel (int nthreads)
360	{	589	{
361	if (wanted < nthreads)	590	if (wanted < nthreads)
…		…
369		598
370	while (started > wanted)	599	while (started > wanted)
371	end_thread ();	600	end_thread ();
372	}	601	}
373		602
374	static void poll_wait ()	603	static void poll_wait (void)
375	{	604	{
376	fd_set rfd;	605	fd_set rfd;
377		606
378	while (nreqs)	607	while (nreqs)
379	{	608	{
380	int size;	609	int size;
381	if (WORDACCESS_UNSAFE) LOCK (reslock);	610	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
382	size = res_queue.size;	611	size = res_queue.size;
383	if (WORDACCESS_UNSAFE) UNLOCK (reslock);	612	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
384		613
385	if (size)	614	if (size)
386	return;	615	return;
387		616
388	maybe_start_thread ();	617	maybe_start_thread ();
389		618
390	FD_ZERO(&rfd);	619	FD_ZERO (&rfd);
391	FD_SET(respipe [0], &rfd);	620	FD_SET (respipe [0], &rfd);
392		621
393	select (respipe [0] + 1, &rfd, 0, 0, 0);	622	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
394	}	623	}
395	}	624	}
396		625
397	static int poll_cb ()	626	static int poll_cb (void)
398	{	627	{
399	dSP;	628	dSP;
400	int count = 0;	629	int count = 0;
401	int maxreqs = max_poll_reqs;	630	int maxreqs = max_poll_reqs;
402	int do_croak = 0;	631	int do_croak = 0;
403	struct timeval tv_start, tv_now;	632	struct timeval tv_start, tv_now;
404	aio_req req;	633	bdb_req req;
405		634
406	if (max_poll_time)	635	if (max_poll_time)
407	gettimeofday (&tv_start, 0);	636	gettimeofday (&tv_start, 0);
408		637
409	for (;;)	638	for (;;)
410	{	639	{
411	for (;;)	640	for (;;)
412	{	641	{
413	maybe_start_thread ();	642	maybe_start_thread ();
414		643
415	LOCK (reslock);	644	X_LOCK (reslock);
416	req = reqq_shift (&res_queue);	645	req = reqq_shift (&res_queue);
417		646
418	if (req)	647	if (req)
419	{	648	{
420	--npending;	649	--npending;
421		650
422	if (!res_queue.size)	651	if (!res_queue.size)
423	{	652	{
424	/* read any signals sent by the worker threads */	653	/* read any signals sent by the worker threads */
425	char buf [4];	654	char buf [4];
426	while (read (respipe [0], buf, 4) == 4)	655	while (respipe_read (respipe [0], buf, 4) == 4)
427	;	656	;
428	}	657	}
429	}	658	}
430		659
431	UNLOCK (reslock);	660	X_UNLOCK (reslock);
432		661
433	if (!req)	662	if (!req)
434	break;	663	break;
435		664
436	--nreqs;	665	--nreqs;
…		…
466	}	695	}
467		696
468	return count;	697	return count;
469	}	698	}
470		699
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	/*****************************************************************************/	700	/*****************************************************************************/
484		701
485	static void *aio_proc (void *thr_arg)	702	X_THREAD_PROC (bdb_proc)
486	{	703	{
487	aio_req req;	704	bdb_req req;
488	struct timespec ts;	705	struct timespec ts;
489	worker *self = (worker *)thr_arg;	706	worker *self = (worker *)thr_arg;
490		707
491	/* try to distribute timeouts somewhat evenly */	708	/* try to distribute timeouts somewhat evenly */
492	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)	709	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
493	* (1000000000UL / 1024UL);
494		710
495	for (;;)	711	for (;;)
496	{	712	{
497	ts.tv_sec = time (0) + IDLE_TIMEOUT;	713	ts.tv_sec = time (0) + IDLE_TIMEOUT;
498		714
499	LOCK (reqlock);	715	X_LOCK (reqlock);
500		716
501	for (;;)	717	for (;;)
502	{	718	{
503	self->req = req = reqq_shift (&req_queue);	719	self->req = req = reqq_shift (&req_queue);
504		720
505	if (req)	721	if (req)
506	break;	722	break;
507		723
508	++idle;	724	++idle;
509		725
510	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)	726	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
511	== ETIMEDOUT)	727	== ETIMEDOUT)
512	{	728	{
513	if (idle > max_idle)	729	if (idle > max_idle)
514	{	730	{
515	--idle;	731	--idle;
516	UNLOCK (reqlock);	732	X_UNLOCK (reqlock);
517	LOCK (wrklock);	733	X_LOCK (wrklock);
518	--started;	734	--started;
519	UNLOCK (wrklock);	735	X_UNLOCK (wrklock);
520	goto quit;	736	goto quit;
521	}	737	}
522		738
523	/* we are allowed to idle, so do so without any timeout */	739	/* we are allowed to idle, so do so without any timeout */
524	pthread_cond_wait (&reqwait, &reqlock);	740	X_COND_WAIT (reqwait, reqlock);
525	ts.tv_sec = time (0) + IDLE_TIMEOUT;	741	ts.tv_sec = time (0) + IDLE_TIMEOUT;
526	}	742	}
527		743
528	--idle;	744	--idle;
529	}	745	}
530		746
531	--nready;	747	--nready;
532		748
533	UNLOCK (reqlock);	749	X_UNLOCK (reqlock);
534		750
535	errno = 0; /* strictly unnecessary */
536
537	switch (req->type)	751	switch (req->type)
538	{	752	{
539	case REQ_QUIT:	753	case REQ_QUIT:
		754	req->result = ENOSYS;
540	goto quit;	755	goto quit;
541		756
		757	case REQ_ENV_OPEN:
		758	req->result = req->env->open (req->env, req->buf1, req->uint1, req->int1);
		759	break;
		760
		761	case REQ_ENV_CLOSE:
		762	req->result = req->env->close (req->env, req->uint1);
		763	break;
		764
		765	case REQ_ENV_TXN_CHECKPOINT:
		766	req->result = req->env->txn_checkpoint (req->env, req->uint1, req->int1, req->uint2);
		767	break;
		768
		769	case REQ_ENV_LOCK_DETECT:
		770	req->result = req->env->lock_detect (req->env, req->uint1, req->uint2, &req->int1);
		771	break;
		772
		773	case REQ_ENV_MEMP_SYNC:
		774	req->result = req->env->memp_sync (req->env, 0);
		775	break;
		776
		777	case REQ_ENV_MEMP_TRICKLE:
		778	req->result = req->env->memp_trickle (req->env, req->int1, &req->int2);
		779	break;
		780
		781	case REQ_ENV_DBREMOVE:
		782	req->result = req->env->dbremove (req->env, req->txn, req->buf1, req->buf2, req->uint1);
		783	break;
		784
		785	case REQ_ENV_DBRENAME:
		786	req->result = req->env->dbrename (req->env, req->txn, req->buf1, req->buf2, req->buf3, req->uint1);
		787	break;
		788
		789	case REQ_DB_OPEN:
		790	req->result = req->db->open (req->db, req->txn, req->buf1, req->buf2, req->int1, req->uint1, req->int2);
		791	break;
		792
		793	case REQ_DB_CLOSE:
		794	req->result = req->db->close (req->db, req->uint1);
		795	break;
		796
		797	case REQ_DB_COMPACT:
		798	req->result = req->db->compact (req->db, req->txn, &req->dbt1, &req->dbt2, 0, req->uint1, 0);
		799	break;
		800
		801	case REQ_DB_SYNC:
		802	req->result = req->db->sync (req->db, req->uint1);
		803	break;
		804
		805	case REQ_DB_UPGRADE:
		806	req->result = req->db->upgrade (req->db, req->buf1, req->uint1);
		807	break;
		808
		809	case REQ_DB_PUT:
		810	req->result = req->db->put (req->db, req->txn, &req->dbt1, &req->dbt2, req->uint1);
		811	break;
		812
		813	#if DB_VERSION_MINOR >= 6
		814	case REQ_DB_EXISTS:
		815	req->result = req->db->exists (req->db, req->txn, &req->dbt1, req->uint1);
		816	break;
		817	#endif
		818	case REQ_DB_GET:
		819	req->result = req->db->get (req->db, req->txn, &req->dbt1, &req->dbt3, req->uint1);
		820	break;
		821
		822	case REQ_DB_PGET:
		823	req->result = req->db->pget (req->db, req->txn, &req->dbt1, &req->dbt2, &req->dbt3, req->uint1);
		824	break;
		825
		826	case REQ_DB_DEL:
		827	req->result = req->db->del (req->db, req->txn, &req->dbt1, req->uint1);
		828	break;
		829
		830	case REQ_DB_KEY_RANGE:
		831	req->result = req->db->key_range (req->db, req->txn, &req->dbt1, &req->key_range, req->uint1);
		832	break;
		833
		834	case REQ_TXN_COMMIT:
		835	req->result = req->txn->commit (req->txn, req->uint1);
		836	break;
		837
		838	case REQ_TXN_ABORT:
		839	req->result = req->txn->abort (req->txn);
		840	break;
		841
		842	case REQ_TXN_FINISH:
		843	if (req->txn->flags & TXN_DEADLOCK)
		844	{
		845	req->result = req->txn->abort (req->txn);
		846	if (!req->result)
		847	req->result = DB_LOCK_DEADLOCK;
		848	}
		849	else
		850	req->result = req->txn->commit (req->txn, req->uint1);
		851	break;
		852
		853	case REQ_C_CLOSE:
		854	req->result = req->dbc->c_close (req->dbc);
		855	break;
		856
		857	case REQ_C_COUNT:
		858	{
		859	db_recno_t recno;
		860	req->result = req->dbc->c_count (req->dbc, &recno, req->uint1);
		861	req->uv1 = recno;
		862	}
		863	break;
		864
		865	case REQ_C_PUT:
		866	req->result = req->dbc->c_put (req->dbc, &req->dbt1, &req->dbt2, req->uint1);
		867	break;
		868
		869	case REQ_C_GET:
		870	req->result = req->dbc->c_get (req->dbc, &req->dbt1, &req->dbt3, req->uint1);
		871	break;
		872
		873	case REQ_C_PGET:
		874	req->result = req->dbc->c_pget (req->dbc, &req->dbt1, &req->dbt2, &req->dbt3, req->uint1);
		875	break;
		876
		877	case REQ_C_DEL:
		878	req->result = req->dbc->c_del (req->dbc, req->uint1);
		879	break;
		880
		881	case REQ_SEQ_OPEN:
		882	req->result = req->seq->open (req->seq, req->txn, &req->dbt1, req->uint1);
		883	break;
		884
		885	case REQ_SEQ_CLOSE:
		886	req->result = req->seq->close (req->seq, req->uint1);
		887	break;
		888
		889	case REQ_SEQ_GET:
		890	req->result = req->seq->get (req->seq, req->txn, req->int1, &req->seq_t, req->uint1);
		891	break;
		892
		893	case REQ_SEQ_REMOVE:
		894	req->result = req->seq->remove (req->seq, req->txn, req->uint1);
		895	break;
		896
542	default:	897	default:
543	//req->result = ENOSYS;	898	req->result = ENOSYS;
544	break;	899	break;
545	}	900	}
546		901
547	//req->errorno = errno;	902	if (req->txn && (req->result > 0 || req->result == DB_LOCK_NOTGRANTED))
		903	req->txn->flags |= TXN_DEADLOCK;
548		904
549	LOCK (reslock);	905	X_LOCK (reslock);
550		906
551	++npending;	907	++npending;
552		908
553	if (!reqq_push (&res_queue, req))	909	if (!reqq_push (&res_queue, req))
554	/* write a dummy byte to the pipe so fh becomes ready */	910	/* write a dummy byte to the pipe so fh becomes ready */
555	write (respipe [1], &respipe, 1);	911	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
556		912
557	self->req = 0;	913	self->req = 0;
558	worker_clear (self);	914	worker_clear (self);
559		915
560	UNLOCK (reslock);	916	X_UNLOCK (reslock);
561	}	917	}
562		918
563	quit:	919	quit:
564	LOCK (wrklock);	920	X_LOCK (wrklock);
565	worker_free (self);	921	worker_free (self);
566	UNLOCK (wrklock);	922	X_UNLOCK (wrklock);
567		923
568	return 0;	924	return 0;
569	}	925	}
570		926
571	/*****************************************************************************/	927	/*****************************************************************************/
572		928
573	static void atfork_prepare (void)	929	static void atfork_prepare (void)
574	{	930	{
575	LOCK (wrklock);	931	X_LOCK (wrklock);
576	LOCK (reqlock);	932	X_LOCK (reqlock);
577	LOCK (reslock);	933	X_LOCK (reslock);
578	}	934	}
579		935
580	static void atfork_parent (void)	936	static void atfork_parent (void)
581	{	937	{
582	UNLOCK (reslock);	938	X_UNLOCK (reslock);
583	UNLOCK (reqlock);	939	X_UNLOCK (reqlock);
584	UNLOCK (wrklock);	940	X_UNLOCK (wrklock);
585	}	941	}
586		942
587	static void atfork_child (void)	943	static void atfork_child (void)
588	{	944	{
589	aio_req prv;	945	bdb_req prv;
590		946
591	while (prv = reqq_shift (&req_queue))	947	while (prv = reqq_shift (&req_queue))
592	req_free (prv);	948	req_free (prv);
593		949
594	while (prv = reqq_shift (&res_queue))	950	while (prv = reqq_shift (&res_queue))
…		…
609	idle = 0;	965	idle = 0;
610	nreqs = 0;	966	nreqs = 0;
611	nready = 0;	967	nready = 0;
612	npending = 0;	968	npending = 0;
613		969
614	close (respipe [0]);
615	close (respipe [1]);
616	create_pipe ();	970	create_respipe ();
617		971
618	atfork_parent ();	972	atfork_parent ();
619	}	973	}
620		974
621	#define dREQ \	975	#define dREQ(reqtype) \
622	aio_req req; \	976	bdb_req req; \
623	int req_pri = next_pri; \	977	int req_pri = next_pri; \
624	next_pri = DEFAULT_PRI + PRI_BIAS; \	978	next_pri = DEFAULT_PRI + PRI_BIAS; \
625	\	979	\
626	if (SvOK (callback) && !SvROK (callback)) \	980	if (callback && SvOK (callback)) \
627	croak ("callback must be undef or of reference type"); \	981	croak ("callback has illegal type or extra arguments"); \
628	\	982	\
629	Newz (0, req, 1, aio_cb); \	983	Newz (0, req, 1, bdb_cb); \
630	if (!req) \	984	if (!req) \
631	croak ("out of memory during aio_req allocation"); \	985	croak ("out of memory during bdb_req allocation"); \
632	\	986	\
633	req->callback = newSVsv (callback); \	987	req->callback = cb ? SvREFCNT_inc (cb) : 0; \
		988	req->type = (reqtype); \
634	req->pri = req_pri	989	req->pri = req_pri
635		990
636	#define REQ_SEND \	991	#define REQ_SEND \
637	req_send (req); \	992	req_send (req)
		993
		994	#define SvPTR(var, arg, type, class, nullok) \
		995	if (!SvOK (arg)) \
		996	{ \
		997	if (nullok != 1) \
		998	croak (# var " must be a " # class " object, not undef"); \
638	\	999	\
639	if (GIMME_V != G_VOID) \	1000	(var) = 0; \
640	XPUSHs (req_sv (req, AIO_REQ_KLASS));	1001	} \
641		1002	else if (sv_derived_from ((arg), # class)) \
		1003	{ \
		1004	IV tmp = SvIV ((SV*) SvRV (arg)); \
		1005	(var) = INT2PTR (type, tmp); \
		1006	if (!var && nullok != 2) \
		1007	croak (# var " is not a valid " # class " object anymore"); \
		1008	} \
		1009	else \
		1010	croak (# var " is not of type " # class);
		1011
		1012	static void
		1013	ptr_nuke (SV *sv)
		1014	{
		1015	assert (SvROK (sv));
		1016	sv_setiv (SvRV (sv), 0);
		1017	}
		1018
		1019	static int
		1020	errno_get (pTHX_ SV *sv, MAGIC *mg)
		1021	{
		1022	if (*mg->mg_ptr == '!') // should always be the case
		1023	if (-30999 <= errno && errno <= -30800)
		1024	{
		1025	sv_setnv (sv, (NV)errno);
		1026	sv_setpv (sv, db_strerror (errno));
		1027	SvNOK_on (sv); /* what a wonderful hack! */
		1028	// ^^^ copied from perl sources
		1029	return 0;
		1030	}
		1031
		1032	return PL_vtbl_sv.svt_get (aTHX_ sv, mg);
		1033	}
		1034
		1035	static MGVTBL vtbl_errno;
		1036
		1037	// this wonderful hack :( patches perl's $! variable to support our errno values
		1038	static void
		1039	patch_errno (void)
		1040	{
		1041	SV *sv;
		1042	MAGIC *mg;
		1043
		1044	if (!(sv = get_sv ("!", 1)))
		1045	return;
		1046
		1047	if (!(mg = mg_find (sv, PERL_MAGIC_sv)))
		1048	return;
		1049
		1050	if (mg->mg_virtual != &PL_vtbl_sv)
		1051	return;
		1052
		1053	vtbl_errno = PL_vtbl_sv;
		1054	vtbl_errno.svt_get = errno_get;
		1055	mg->mg_virtual = &vtbl_errno;
		1056	}
		1057
		1058	#if __GNUC__ >= 4
		1059	# define noinline __attribute__ ((noinline))
		1060	#else
		1061	# define noinline
		1062	#endif
		1063
		1064	static noinline SV *
		1065	pop_callback (I32 *ritems, SV *sv)
		1066	{
		1067	if (SvROK (sv))
		1068	{
		1069	HV *st;
		1070	GV *gvp;
		1071	CV *cv;
		1072	const char *name;
		1073
		1074	/* forgive me */
		1075	if (SvTYPE (SvRV (sv)) == SVt_PVMG
		1076	&& (st = SvSTASH (SvRV (sv)))
		1077	&& (name = HvNAME_get (st))
		1078	&& (name [0] == 'B' && name [1] == 'D' && name [2] == 'B' && name [3] == ':'))
		1079	return 0;
		1080
		1081	if ((cv = sv_2cv (sv, &st, &gvp, 0)))
		1082	{
		1083	--*ritems;
		1084	return (SV *)cv;
		1085	}
		1086	}
		1087
		1088	return 0;
		1089	}
		1090
		1091	#define CALLBACK SV *cb = pop_callback (&items, ST (items - 1));
		1092
642	MODULE = BDB::AIO PACKAGE = BDB::AIO	1093	MODULE = BDB PACKAGE = BDB
643		1094
644	PROTOTYPES: ENABLE	1095	PROTOTYPES: ENABLE
645		1096
646	BOOT:	1097	BOOT:
647	{	1098	{
648	HV *stash = gv_stashpv ("BDB::AIO", 1);	1099	HV *stash = gv_stashpv ("BDB", 1);
649		1100
650	create_pipe ();	1101	static const struct {
		1102	const char *name;
		1103	IV iv;
		1104	} *civ, const_iv[] = {
		1105	#define const_iv(name) { # name, (IV)DB_ ## name },
		1106	const_iv (RPCCLIENT)
		1107	const_iv (INIT_CDB)
		1108	const_iv (INIT_LOCK)
		1109	const_iv (INIT_LOG)
		1110	const_iv (INIT_MPOOL)
		1111	const_iv (INIT_REP)
		1112	const_iv (INIT_TXN)
		1113	const_iv (RECOVER)
		1114	const_iv (INIT_TXN)
		1115	const_iv (RECOVER_FATAL)
		1116	const_iv (CREATE)
		1117	const_iv (RDONLY)
		1118	const_iv (USE_ENVIRON)
		1119	const_iv (USE_ENVIRON_ROOT)
		1120	const_iv (LOCKDOWN)
		1121	const_iv (PRIVATE)
		1122	const_iv (REGISTER)
		1123	const_iv (SYSTEM_MEM)
		1124	const_iv (AUTO_COMMIT)
		1125	const_iv (CDB_ALLDB)
		1126	const_iv (DIRECT_DB)
		1127	const_iv (DSYNC_DB)
		1128	const_iv (NOLOCKING)
		1129	const_iv (NOMMAP)
		1130	const_iv (NOPANIC)
		1131	const_iv (OVERWRITE)
		1132	const_iv (PANIC_ENVIRONMENT)
		1133	const_iv (REGION_INIT)
		1134	const_iv (TIME_NOTGRANTED)
		1135	const_iv (TXN_NOSYNC)
		1136	const_iv (TXN_NOT_DURABLE)
		1137	const_iv (TXN_WRITE_NOSYNC)
		1138	const_iv (WRITECURSOR)
		1139	const_iv (YIELDCPU)
		1140	const_iv (ENCRYPT_AES)
		1141	const_iv (XA_CREATE)
		1142	const_iv (BTREE)
		1143	const_iv (HASH)
		1144	const_iv (QUEUE)
		1145	const_iv (RECNO)
		1146	const_iv (UNKNOWN)
		1147	const_iv (EXCL)
		1148	const_iv (READ_COMMITTED)
		1149	const_iv (READ_UNCOMMITTED)
		1150	const_iv (TRUNCATE)
		1151	const_iv (NOSYNC)
		1152	const_iv (CHKSUM)
		1153	const_iv (ENCRYPT)
		1154	const_iv (DUP)
		1155	const_iv (DUPSORT)
		1156	const_iv (RECNUM)
		1157	const_iv (RENUMBER)
		1158	const_iv (REVSPLITOFF)
		1159	const_iv (INORDER)
		1160	const_iv (CONSUME)
		1161	const_iv (CONSUME_WAIT)
		1162	const_iv (GET_BOTH)
		1163	const_iv (GET_BOTH_RANGE)
		1164	//const_iv (SET_RECNO)
		1165	//const_iv (MULTIPLE)
		1166	const_iv (SNAPSHOT)
		1167	const_iv (JOIN_ITEM)
		1168	const_iv (JOIN_NOSORT)
		1169	const_iv (RMW)
		1170
		1171	const_iv (NOTFOUND)
		1172	const_iv (KEYEMPTY)
		1173	const_iv (LOCK_DEADLOCK)
		1174	const_iv (LOCK_NOTGRANTED)
		1175	const_iv (RUNRECOVERY)
		1176	const_iv (OLD_VERSION)
		1177	const_iv (REP_HANDLE_DEAD)
		1178	const_iv (REP_LOCKOUT)
		1179	const_iv (SECONDARY_BAD)
		1180
		1181	const_iv (FREE_SPACE)
		1182	const_iv (FREELIST_ONLY)
		1183
		1184	const_iv (APPEND)
		1185	const_iv (NODUPDATA)
		1186	const_iv (NOOVERWRITE)
		1187
		1188	const_iv (TXN_NOWAIT)
		1189	const_iv (TXN_SYNC)
		1190
		1191	const_iv (SET_LOCK_TIMEOUT)
		1192	const_iv (SET_TXN_TIMEOUT)
		1193
		1194	const_iv (FIRST)
		1195	const_iv (NEXT)
		1196	const_iv (NEXT_DUP)
		1197	const_iv (NEXT_NODUP)
		1198	const_iv (PREV)
		1199	const_iv (PREV_NODUP)
		1200	const_iv (SET)
		1201	const_iv (SET_RANGE)
		1202	const_iv (LAST)
		1203	const_iv (BEFORE)
		1204	const_iv (AFTER)
		1205	const_iv (CURRENT)
		1206	const_iv (KEYFIRST)
		1207	const_iv (KEYLAST)
		1208	const_iv (NODUPDATA)
		1209
		1210	const_iv (FORCE)
		1211
		1212	const_iv (LOCK_DEFAULT)
		1213	const_iv (LOCK_EXPIRE)
		1214	const_iv (LOCK_MAXLOCKS)
		1215	const_iv (LOCK_MAXWRITE)
		1216	const_iv (LOCK_MINLOCKS)
		1217	const_iv (LOCK_MINWRITE)
		1218	const_iv (LOCK_OLDEST)
		1219	const_iv (LOCK_RANDOM)
		1220	const_iv (LOCK_YOUNGEST)
		1221
		1222	const_iv (SEQ_DEC)
		1223	const_iv (SEQ_INC)
		1224	const_iv (SEQ_WRAP)
		1225
		1226	const_iv (BUFFER_SMALL)
		1227	const_iv (DONOTINDEX)
		1228	const_iv (KEYEMPTY )
		1229	const_iv (KEYEXIST )
		1230	const_iv (LOCK_DEADLOCK)
		1231	const_iv (LOCK_NOTGRANTED)
		1232	const_iv (LOG_BUFFER_FULL)
		1233	const_iv (NOSERVER)
		1234	const_iv (NOSERVER_HOME)
		1235	const_iv (NOSERVER_ID)
		1236	const_iv (NOTFOUND)
		1237	const_iv (PAGE_NOTFOUND)
		1238	const_iv (REP_DUPMASTER)
		1239	const_iv (REP_HANDLE_DEAD)
		1240	const_iv (REP_HOLDELECTION)
		1241	const_iv (REP_IGNORE)
		1242	const_iv (REP_ISPERM)
		1243	const_iv (REP_JOIN_FAILURE)
		1244	const_iv (REP_LOCKOUT)
		1245	const_iv (REP_NEWMASTER)
		1246	const_iv (REP_NEWSITE)
		1247	const_iv (REP_NOTPERM)
		1248	const_iv (REP_UNAVAIL)
		1249	const_iv (RUNRECOVERY)
		1250	const_iv (SECONDARY_BAD)
		1251	const_iv (VERIFY_BAD)
		1252	const_iv (VERSION_MISMATCH)
		1253
		1254	const_iv (VERB_DEADLOCK)
		1255	const_iv (VERB_RECOVERY)
		1256	const_iv (VERB_REGISTER)
		1257	const_iv (VERB_REPLICATION)
		1258	const_iv (VERB_WAITSFOR)
		1259
		1260	const_iv (VERSION_MAJOR)
		1261	const_iv (VERSION_MINOR)
		1262	const_iv (VERSION_PATCH)
		1263	#if DB_VERSION_MINOR >= 5
		1264	const_iv (MULTIVERSION)
		1265	const_iv (TXN_SNAPSHOT)
		1266	#endif
		1267	#if DB_VERSION_MINOR >= 6
		1268	const_iv (PREV_DUP)
		1269	const_iv (PRIORITY_UNCHANGED)
		1270	const_iv (PRIORITY_VERY_LOW)
		1271	const_iv (PRIORITY_LOW)
		1272	const_iv (PRIORITY_DEFAULT)
		1273	const_iv (PRIORITY_HIGH)
		1274	const_iv (PRIORITY_VERY_HIGH)
		1275	#endif
		1276	#if DB_VERSION_MINOR >= 7
		1277	const_iv (LOG_DIRECT)
		1278	const_iv (LOG_DSYNC)
		1279	const_iv (LOG_AUTO_REMOVE)
		1280	const_iv (LOG_IN_MEMORY)
		1281	const_iv (LOG_ZERO)
		1282	#else
		1283	const_iv (DIRECT_LOG)
		1284	const_iv (DSYNC_LOG)
		1285	const_iv (LOG_AUTOREMOVE)
		1286	const_iv (LOG_INMEMORY)
		1287	#endif
		1288	};
		1289
		1290	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ-- > const_iv; )
		1291	newCONSTSUB (stash, (char *)civ->name, newSViv (civ->iv));
		1292
		1293	{
		1294	/* we currently only allow version, minor-version and patchlevel to go up to 255 */
		1295	char vstring[3] = { DB_VERSION_MAJOR, DB_VERSION_MINOR, DB_VERSION_PATCH };
		1296
		1297	newCONSTSUB (stash, "VERSION_v", newSVpvn (vstring, 3));
		1298	}
		1299
		1300	newCONSTSUB (stash, "VERSION_STRING", newSVpv (DB_VERSION_STRING, 0));
		1301
		1302	create_respipe ();
		1303
651	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1304	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
		1305	patch_errno ();
652	}	1306	}
653		1307
654	void	1308	void
655	max_poll_reqs (int nreqs)	1309	max_poll_reqs (int nreqs)
656	PROTOTYPE: $	1310	PROTOTYPE: $
…		…
685	max_outstanding = maxreqs;	1339	max_outstanding = maxreqs;
686	OUTPUT:	1340	OUTPUT:
687	RETVAL	1341	RETVAL
688		1342
689	int	1343	int
690	bdbreq_pri (int pri = 0)	1344	dbreq_pri (int pri = 0)
691	PROTOTYPE: ;$	1345	PROTOTYPE: ;$
692	CODE:	1346	CODE:
693	RETVAL = next_pri - PRI_BIAS;	1347	RETVAL = next_pri - PRI_BIAS;
694	if (items > 0)	1348	if (items > 0)
695	{	1349	{
…		…
699	}	1353	}
700	OUTPUT:	1354	OUTPUT:
701	RETVAL	1355	RETVAL
702		1356
703	void	1357	void
704	bdbreq_nice (int nice = 0)	1358	dbreq_nice (int nice = 0)
705	CODE:	1359	CODE:
706	nice = next_pri - nice;	1360	nice = next_pri - nice;
707	if (nice < PRI_MIN) nice = PRI_MIN;	1361	if (nice < PRI_MIN) nice = PRI_MIN;
708	if (nice > PRI_MAX) nice = PRI_MAX;	1362	if (nice > PRI_MAX) nice = PRI_MAX;
709	next_pri = nice + PRI_BIAS;	1363	next_pri = nice + PRI_BIAS;
…		…
717	poll_wait ();	1371	poll_wait ();
718	poll_cb ();	1372	poll_cb ();
719	}	1373	}
720		1374
721	int	1375	int
722	poll()	1376	poll ()
723	PROTOTYPE:	1377	PROTOTYPE:
724	CODE:	1378	CODE:
725	poll_wait ();	1379	poll_wait ();
726	RETVAL = poll_cb ();	1380	RETVAL = poll_cb ();
727	OUTPUT:	1381	OUTPUT:
728	RETVAL	1382	RETVAL
729		1383
730	int	1384	int
731	poll_fileno()	1385	poll_fileno ()
732	PROTOTYPE:	1386	PROTOTYPE:
733	CODE:	1387	CODE:
734	RETVAL = respipe [0];	1388	RETVAL = respipe [0];
735	OUTPUT:	1389	OUTPUT:
736	RETVAL	1390	RETVAL
737		1391
738	int	1392	int
739	poll_cb(...)	1393	poll_cb (...)
740	PROTOTYPE:	1394	PROTOTYPE:
741	CODE:	1395	CODE:
742	RETVAL = poll_cb ();	1396	RETVAL = poll_cb ();
743	OUTPUT:	1397	OUTPUT:
744	RETVAL	1398	RETVAL
745		1399
746	void	1400	void
747	poll_wait()	1401	poll_wait ()
748	PROTOTYPE:	1402	PROTOTYPE:
749	CODE:	1403	CODE:
750	poll_wait ();	1404	poll_wait ();
751		1405
752	int	1406	int
753	nreqs()	1407	nreqs ()
754	PROTOTYPE:	1408	PROTOTYPE:
755	CODE:	1409	CODE:
756	RETVAL = nreqs;	1410	RETVAL = nreqs;
757	OUTPUT:	1411	OUTPUT:
758	RETVAL	1412	RETVAL
759		1413
760	int	1414	int
761	nready()	1415	nready ()
762	PROTOTYPE:	1416	PROTOTYPE:
763	CODE:	1417	CODE:
764	RETVAL = get_nready ();	1418	RETVAL = get_nready ();
765	OUTPUT:	1419	OUTPUT:
766	RETVAL	1420	RETVAL
767		1421
768	int	1422	int
769	npending()	1423	npending ()
770	PROTOTYPE:	1424	PROTOTYPE:
771	CODE:	1425	CODE:
772	RETVAL = get_npending ();	1426	RETVAL = get_npending ();
773	OUTPUT:	1427	OUTPUT:
774	RETVAL	1428	RETVAL
775		1429
776	int	1430	int
777	nthreads()	1431	nthreads ()
778	PROTOTYPE:	1432	PROTOTYPE:
779	CODE:	1433	CODE:
780	if (WORDACCESS_UNSAFE) LOCK (wrklock);	1434	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
781	RETVAL = started;	1435	RETVAL = started;
782	if (WORDACCESS_UNSAFE) UNLOCK (wrklock);	1436	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
783	OUTPUT:	1437	OUTPUT:
784	RETVAL	1438	RETVAL
785		1439
		1440	void
		1441	set_sync_prepare (SV *cb)
		1442	PROTOTYPE: &
		1443	CODE:
		1444	SvREFCNT_dec (prepare_cb);
		1445	prepare_cb = newSVsv (cb);
786		1446
		1447	char *
		1448	strerror (int errorno = errno)
		1449	PROTOTYPE: ;$
		1450	CODE:
		1451	RETVAL = db_strerror (errorno);
		1452	OUTPUT:
		1453	RETVAL
		1454
		1455	void _on_next_submit (SV *cb)
		1456	CODE:
		1457	SvREFCNT_dec (on_next_submit);
		1458	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1459
		1460	DB_ENV *
		1461	db_env_create (U32 env_flags = 0)
		1462	CODE:
		1463	{
		1464	errno = db_env_create (&RETVAL, env_flags);
		1465	if (errno)
		1466	croak ("db_env_create: %s", db_strerror (errno));
		1467
		1468	if (0)
		1469	{
		1470	RETVAL->set_errcall (RETVAL, debug_errcall);
		1471	RETVAL->set_msgcall (RETVAL, debug_msgcall);
		1472	}
		1473	}
		1474	OUTPUT:
		1475	RETVAL
		1476
		1477	void
		1478	db_env_open (DB_ENV *env, bdb_filename db_home, U32 open_flags, int mode, SV *callback = 0)
		1479	PREINIT:
		1480	CALLBACK
		1481	CODE:
		1482	{
		1483	dREQ (REQ_ENV_OPEN);
		1484	req->env = env;
		1485	req->uint1 = open_flags | DB_THREAD;
		1486	req->int1 = mode;
		1487	req->buf1 = strdup_ornull (db_home);
		1488	REQ_SEND;
		1489	}
		1490
		1491	void
		1492	db_env_close (DB_ENV *env, U32 flags = 0, SV *callback = 0)
		1493	PREINIT:
		1494	CALLBACK
		1495	CODE:
		1496	{
		1497	dREQ (REQ_ENV_CLOSE);
		1498	req->env = env;
		1499	req->uint1 = flags;
		1500	REQ_SEND;
		1501	ptr_nuke (ST (0));
		1502	}
		1503
		1504	void
		1505	db_env_txn_checkpoint (DB_ENV *env, U32 kbyte = 0, U32 min = 0, U32 flags = 0, SV *callback = 0)
		1506	PREINIT:
		1507	CALLBACK
		1508	CODE:
		1509	{
		1510	dREQ (REQ_ENV_TXN_CHECKPOINT);
		1511	req->env = env;
		1512	req->uint1 = kbyte;
		1513	req->int1 = min;
		1514	req->uint2 = flags;
		1515	REQ_SEND;
		1516	}
		1517
		1518	void
		1519	db_env_lock_detect (DB_ENV *env, U32 flags = 0, U32 atype = DB_LOCK_DEFAULT, SV *dummy = 0, SV *callback = 0)
		1520	PREINIT:
		1521	CALLBACK
		1522	CODE:
		1523	{
		1524	dREQ (REQ_ENV_LOCK_DETECT);
		1525	req->env = env;
		1526	req->uint1 = flags;
		1527	req->uint2 = atype;
		1528	/* req->int2 = 0; dummy */
		1529	REQ_SEND;
		1530	}
		1531
		1532	void
		1533	db_env_memp_sync (DB_ENV *env, SV *dummy = 0, SV *callback = 0)
		1534	PREINIT:
		1535	CALLBACK
		1536	CODE:
		1537	{
		1538	dREQ (REQ_ENV_MEMP_SYNC);
		1539	req->env = env;
		1540	REQ_SEND;
		1541	}
		1542
		1543	void
		1544	db_env_memp_trickle (DB_ENV *env, int percent, SV *dummy = 0, SV *callback = 0)
		1545	PREINIT:
		1546	CALLBACK
		1547	CODE:
		1548	{
		1549	dREQ (REQ_ENV_MEMP_TRICKLE);
		1550	req->env = env;
		1551	req->int1 = percent;
		1552	REQ_SEND;
		1553	}
		1554
		1555	void
		1556	db_env_dbremove (DB_ENV *env, DB_TXN_ornull *txnid, bdb_filename file, bdb_filename database, U32 flags = 0, SV *callback = 0)
		1557	PREINIT:
		1558	CALLBACK
		1559	CODE:
		1560	{
		1561	dREQ (REQ_ENV_DBREMOVE);
		1562	req->env = env;
		1563	req->buf1 = strdup_ornull (file);
		1564	req->buf2 = strdup_ornull (database);
		1565	req->uint1 = flags;
		1566	REQ_SEND;
		1567	}
		1568
		1569	void
		1570	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)
		1571	PREINIT:
		1572	CALLBACK
		1573	CODE:
		1574	{
		1575	dREQ (REQ_ENV_DBRENAME);
		1576	req->env = env;
		1577	req->buf1 = strdup_ornull (file);
		1578	req->buf2 = strdup_ornull (database);
		1579	req->buf3 = strdup_ornull (newname);
		1580	req->uint1 = flags;
		1581	REQ_SEND;
		1582	}
		1583
		1584	DB *
		1585	db_create (DB_ENV *env = 0, U32 flags = 0)
		1586	CODE:
		1587	{
		1588	errno = db_create (&RETVAL, env, flags);
		1589	if (errno)
		1590	croak ("db_create: %s", db_strerror (errno));
		1591
		1592	if (RETVAL)
		1593	RETVAL->app_private = (void *)newSVsv (ST (0));
		1594	}
		1595	OUTPUT:
		1596	RETVAL
		1597
		1598	void
		1599	db_open (DB *db, DB_TXN_ornull *txnid, bdb_filename file, bdb_filename database, int type, U32 flags, int mode, SV *callback = 0)
		1600	PREINIT:
		1601	CALLBACK
		1602	CODE:
		1603	{
		1604	dREQ (REQ_DB_OPEN);
		1605	req->db = db;
		1606	req->txn = txnid;
		1607	req->buf1 = strdup_ornull (file);
		1608	req->buf2 = strdup_ornull (database);
		1609	req->int1 = type;
		1610	req->uint1 = flags | DB_THREAD;
		1611	req->int2 = mode;
		1612	REQ_SEND;
		1613	}
		1614
		1615	void
		1616	db_close (DB *db, U32 flags = 0, SV *callback = 0)
		1617	PREINIT:
		1618	CALLBACK
		1619	CODE:
		1620	{
		1621	dREQ (REQ_DB_CLOSE);
		1622	req->db = db;
		1623	req->uint1 = flags;
		1624	req->sv1 = (SV *)db->app_private;
		1625	REQ_SEND;
		1626	ptr_nuke (ST (0));
		1627	}
		1628
		1629	void
		1630	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)
		1631	PREINIT:
		1632	CALLBACK
		1633	CODE:
		1634	{
		1635	dREQ (REQ_DB_COMPACT);
		1636	req->db = db;
		1637	req->txn = txn;
		1638	sv_to_dbt (&req->dbt1, start);
		1639	sv_to_dbt (&req->dbt2, stop);
		1640	req->uint1 = flags;
		1641	REQ_SEND;
		1642	}
		1643
		1644	void
		1645	db_sync (DB *db, U32 flags = 0, SV *callback = 0)
		1646	PREINIT:
		1647	CALLBACK
		1648	CODE:
		1649	{
		1650	dREQ (REQ_DB_SYNC);
		1651	req->db = db;
		1652	req->uint1 = flags;
		1653	REQ_SEND;
		1654	}
		1655
		1656	void
		1657	db_upgrade (DB *db, bdb_filename file, U32 flags = 0, SV *callback = 0)
		1658	PREINIT:
		1659	CALLBACK
		1660	CODE:
		1661	{
		1662	dREQ (REQ_DB_SYNC);
		1663	req->db = db;
		1664	req->buf1 = strdup (file);
		1665	req->uint1 = flags;
		1666	REQ_SEND;
		1667	}
		1668
		1669	void
		1670	db_key_range (DB *db, DB_TXN_ornull *txn, SV *key, SV *key_range, U32 flags = 0, SV *callback = 0)
		1671	PREINIT:
		1672	CALLBACK
		1673	CODE:
		1674	{
		1675	dREQ (REQ_DB_KEY_RANGE);
		1676	req->db = db;
		1677	req->txn = txn;
		1678	sv_to_dbt (&req->dbt1, key);
		1679	req->uint1 = flags;
		1680	req->sv1 = SvREFCNT_inc (key_range); SvREADONLY_on (key_range);
		1681	REQ_SEND;
		1682	}
		1683
		1684	void
		1685	db_put (DB *db, DB_TXN_ornull *txn, SV *key, SV *data, U32 flags = 0, SV *callback = 0)
		1686	PREINIT:
		1687	CALLBACK
		1688	CODE:
		1689	{
		1690	dREQ (REQ_DB_PUT);
		1691	req->db = db;
		1692	req->txn = txn;
		1693	sv_to_dbt (&req->dbt1, key);
		1694	sv_to_dbt (&req->dbt2, data);
		1695	req->uint1 = flags;
		1696	REQ_SEND;
		1697	}
		1698
		1699	#if DB_VERSION_MINOR >= 6
		1700
		1701	void
		1702	db_exists (DB *db, DB_TXN_ornull *txn, SV *key, U32 flags = 0, SV *callback = 0)
		1703	PREINIT:
		1704	CALLBACK
		1705	CODE:
		1706	{
		1707	dREQ (REQ_DB_EXISTS);
		1708	req->db = db;
		1709	req->txn = txn;
		1710	req->uint1 = flags;
		1711	sv_to_dbt (&req->dbt1, key);
		1712	REQ_SEND;
		1713	}
		1714
		1715	#endif
		1716
		1717	void
		1718	db_get (DB *db, DB_TXN_ornull *txn, SV *key, SV *data, U32 flags = 0, SV *callback = 0)
		1719	PREINIT:
		1720	CALLBACK
		1721	CODE:
		1722	if (SvREADONLY (data))
		1723	croak ("can't modify read-only data scalar in db_get");
		1724	{
		1725	dREQ (REQ_DB_GET);
		1726	req->db = db;
		1727	req->txn = txn;
		1728	req->uint1 = flags;
		1729	sv_to_dbt (&req->dbt1, key);
		1730	req->dbt3.flags = DB_DBT_MALLOC;
		1731	req->sv3 = SvREFCNT_inc (data); SvREADONLY_on (data);
		1732	REQ_SEND;
		1733	}
		1734
		1735	void
		1736	db_pget (DB *db, DB_TXN_ornull *txn, SV *key, SV *pkey, SV *data, U32 flags = 0, SV *callback = 0)
		1737	PREINIT:
		1738	CALLBACK
		1739	CODE:
		1740	if (SvREADONLY (data))
		1741	croak ("can't modify read-only data scalar in db_pget");
		1742	{
		1743	dREQ (REQ_DB_PGET);
		1744	req->db = db;
		1745	req->txn = txn;
		1746	req->uint1 = flags;
		1747	sv_to_dbt (&req->dbt1, key);
		1748	sv_to_dbt (&req->dbt2, pkey);
		1749	req->dbt3.flags = DB_DBT_MALLOC;
		1750	req->sv3 = SvREFCNT_inc (data); SvREADONLY_on (data);
		1751	REQ_SEND;
		1752	}
		1753
		1754	void
		1755	db_del (DB *db, DB_TXN_ornull *txn, SV *key, U32 flags = 0, SV *callback = 0)
		1756	PREINIT:
		1757	CALLBACK
		1758	CODE:
		1759	{
		1760	dREQ (REQ_DB_DEL);
		1761	req->db = db;
		1762	req->txn = txn;
		1763	req->uint1 = flags;
		1764	sv_to_dbt (&req->dbt1, key);
		1765	REQ_SEND;
		1766	}
		1767
		1768	void
		1769	db_txn_commit (DB_TXN *txn, U32 flags = 0, SV *callback = 0)
		1770	PREINIT:
		1771	CALLBACK
		1772	CODE:
		1773	{
		1774	dREQ (REQ_TXN_COMMIT);
		1775	req->txn = txn;
		1776	req->uint1 = flags;
		1777	REQ_SEND;
		1778	ptr_nuke (ST (0));
		1779	}
		1780
		1781	void
		1782	db_txn_abort (DB_TXN *txn, SV *callback = 0)
		1783	PREINIT:
		1784	CALLBACK
		1785	CODE:
		1786	{
		1787	dREQ (REQ_TXN_ABORT);
		1788	req->txn = txn;
		1789	REQ_SEND;
		1790	ptr_nuke (ST (0));
		1791	}
		1792
		1793	void
		1794	db_txn_finish (DB_TXN *txn, U32 flags = 0, SV *callback = 0)
		1795	PREINIT:
		1796	CALLBACK
		1797	CODE:
		1798	{
		1799	dREQ (REQ_TXN_FINISH);
		1800	req->txn = txn;
		1801	req->uint1 = flags;
		1802	REQ_SEND;
		1803	ptr_nuke (ST (0));
		1804	}
		1805
		1806	void
		1807	db_c_close (DBC *dbc, SV *callback = 0)
		1808	PREINIT:
		1809	CALLBACK
		1810	CODE:
		1811	{
		1812	dREQ (REQ_C_CLOSE);
		1813	req->dbc = dbc;
		1814	REQ_SEND;
		1815	ptr_nuke (ST (0));
		1816	}
		1817
		1818	void
		1819	db_c_count (DBC *dbc, SV *count, U32 flags = 0, SV *callback = 0)
		1820	PREINIT:
		1821	CALLBACK
		1822	CODE:
		1823	{
		1824	dREQ (REQ_C_COUNT);
		1825	req->dbc = dbc;
		1826	req->sv1 = SvREFCNT_inc (count);
		1827	REQ_SEND;
		1828	}
		1829
		1830	void
		1831	db_c_put (DBC *dbc, SV *key, SV *data, U32 flags = 0, SV *callback = 0)
		1832	PREINIT:
		1833	CALLBACK
		1834	CODE:
		1835	{
		1836	dREQ (REQ_C_PUT);
		1837	req->dbc = dbc;
		1838	sv_to_dbt (&req->dbt1, key);
		1839	sv_to_dbt (&req->dbt2, data);
		1840	req->uint1 = flags;
		1841	REQ_SEND;
		1842	}
		1843
		1844	void
		1845	db_c_get (DBC *dbc, SV *key, SV *data, U32 flags = 0, SV *callback = 0)
		1846	PREINIT:
		1847	CALLBACK
		1848	CODE:
		1849	{
		1850	dREQ (REQ_C_GET);
		1851	req->dbc = dbc;
		1852	req->uint1 = flags;
		1853	if ((flags & DB_SET) == DB_SET
		1854	|| (flags & DB_SET_RANGE) == DB_SET_RANGE)
		1855	sv_to_dbt (&req->dbt1, key);
		1856	else
		1857	req->dbt1.flags = DB_DBT_MALLOC;
		1858
		1859	req->sv1 = SvREFCNT_inc (key); SvREADONLY_on (key);
		1860
		1861	if ((flags & DB_GET_BOTH) == DB_GET_BOTH
		1862	|| (flags & DB_GET_BOTH_RANGE) == DB_GET_BOTH_RANGE)
		1863	sv_to_dbt (&req->dbt3, data);
		1864	else
		1865	req->dbt3.flags = DB_DBT_MALLOC;
		1866
		1867	req->sv3 = SvREFCNT_inc (data); SvREADONLY_on (data);
		1868	REQ_SEND;
		1869	}
		1870
		1871	void
		1872	db_c_pget (DBC *dbc, SV *key, SV *pkey, SV *data, U32 flags = 0, SV *callback = 0)
		1873	PREINIT:
		1874	CALLBACK
		1875	CODE:
		1876	{
		1877	dREQ (REQ_C_PGET);
		1878	req->dbc = dbc;
		1879	req->uint1 = flags;
		1880	if ((flags & DB_SET) == DB_SET
		1881	|| (flags & DB_SET_RANGE) == DB_SET_RANGE)
		1882	sv_to_dbt (&req->dbt1, key);
		1883	else
		1884	req->dbt1.flags = DB_DBT_MALLOC;
		1885
		1886	req->sv1 = SvREFCNT_inc (key); SvREADONLY_on (key);
		1887
		1888	req->dbt2.flags = DB_DBT_MALLOC;
		1889	req->sv2 = SvREFCNT_inc (pkey); SvREADONLY_on (pkey);
		1890
		1891	if ((flags & DB_GET_BOTH) == DB_GET_BOTH
		1892	|| (flags & DB_GET_BOTH_RANGE) == DB_GET_BOTH_RANGE)
		1893	sv_to_dbt (&req->dbt3, data);
		1894	else
		1895	req->dbt3.flags = DB_DBT_MALLOC;
		1896
		1897	req->sv3 = SvREFCNT_inc (data); SvREADONLY_on (data);
		1898	REQ_SEND;
		1899	}
		1900
		1901	void
		1902	db_c_del (DBC *dbc, U32 flags = 0, SV *callback = 0)
		1903	PREINIT:
		1904	CALLBACK
		1905	CODE:
		1906	{
		1907	dREQ (REQ_C_DEL);
		1908	req->dbc = dbc;
		1909	req->uint1 = flags;
		1910	REQ_SEND;
		1911	}
		1912
		1913
		1914	void
		1915	db_sequence_open (DB_SEQUENCE *seq, DB_TXN_ornull *txnid, SV *key, U32 flags = 0, SV *callback = 0)
		1916	PREINIT:
		1917	CALLBACK
		1918	CODE:
		1919	{
		1920	dREQ (REQ_SEQ_OPEN);
		1921	req->seq = seq;
		1922	req->txn = txnid;
		1923	req->uint1 = flags | DB_THREAD;
		1924	sv_to_dbt (&req->dbt1, key);
		1925	REQ_SEND;
		1926	}
		1927
		1928	void
		1929	db_sequence_close (DB_SEQUENCE *seq, U32 flags = 0, SV *callback = 0)
		1930	PREINIT:
		1931	CALLBACK
		1932	CODE:
		1933	{
		1934	dREQ (REQ_SEQ_CLOSE);
		1935	req->seq = seq;
		1936	req->uint1 = flags;
		1937	REQ_SEND;
		1938	ptr_nuke (ST (0));
		1939	}
		1940
		1941	void
		1942	db_sequence_get (DB_SEQUENCE *seq, DB_TXN_ornull *txnid, int delta, SV *seq_value, U32 flags = DB_TXN_NOSYNC, SV *callback = 0)
		1943	PREINIT:
		1944	CALLBACK
		1945	CODE:
		1946	{
		1947	dREQ (REQ_SEQ_GET);
		1948	req->seq = seq;
		1949	req->txn = txnid;
		1950	req->int1 = delta;
		1951	req->uint1 = flags;
		1952	req->sv1 = SvREFCNT_inc (seq_value); SvREADONLY_on (seq_value);
		1953	REQ_SEND;
		1954	}
		1955
		1956	void
		1957	db_sequence_remove (DB_SEQUENCE *seq, DB_TXN_ornull *txnid = 0, U32 flags = 0, SV *callback = 0)
		1958	PREINIT:
		1959	CALLBACK
		1960	CODE:
		1961	{
		1962	dREQ (REQ_SEQ_REMOVE);
		1963	req->seq = seq;
		1964	req->txn = txnid;
		1965	req->uint1 = flags;
		1966	REQ_SEND;
		1967	}
		1968
		1969
		1970	MODULE = BDB PACKAGE = BDB::Env
		1971
		1972	void
		1973	DESTROY (DB_ENV_ornuked *env)
		1974	CODE:
		1975	if (env)
		1976	env->close (env, 0);
		1977
		1978	int set_data_dir (DB_ENV *env, const char *dir)
		1979	CODE:
		1980	RETVAL = env->set_data_dir (env, dir);
		1981	OUTPUT:
		1982	RETVAL
		1983
		1984	int set_tmp_dir (DB_ENV *env, const char *dir)
		1985	CODE:
		1986	RETVAL = env->set_tmp_dir (env, dir);
		1987	OUTPUT:
		1988	RETVAL
		1989
		1990	int set_lg_dir (DB_ENV *env, const char *dir)
		1991	CODE:
		1992	RETVAL = env->set_lg_dir (env, dir);
		1993	OUTPUT:
		1994	RETVAL
		1995
		1996	int set_shm_key (DB_ENV *env, long shm_key)
		1997	CODE:
		1998	RETVAL = env->set_shm_key (env, shm_key);
		1999	OUTPUT:
		2000	RETVAL
		2001
		2002	int set_cachesize (DB_ENV *env, U32 gbytes, U32 bytes, int ncache = 0)
		2003	CODE:
		2004	RETVAL = env->set_cachesize (env, gbytes, bytes, ncache);
		2005	OUTPUT:
		2006	RETVAL
		2007
		2008	int set_flags (DB_ENV *env, U32 flags, int onoff = 1)
		2009	CODE:
		2010	RETVAL = env->set_flags (env, flags, onoff);
		2011	OUTPUT:
		2012	RETVAL
		2013
		2014	#if DB_VERSION_MINOR >= 7
		2015
		2016	int set_intermediate_dir_mode (DB_ENV *env, const char *mode)
		2017	CODE:
		2018	RETVAL = env->set_intermediate_dir_mode (env, mode);
		2019	OUTPUT:
		2020	RETVAL
		2021
		2022	int log_set_config (DB_ENV *env, U32 flags, int onoff = 1)
		2023	CODE:
		2024	RETVAL = env->log_set_config (env, flags, onoff);
		2025	OUTPUT:
		2026	RETVAL
		2027
		2028	#endif
		2029
		2030
		2031	void set_errfile (DB_ENV *env, FILE *errfile = 0)
		2032	CODE:
		2033	env->set_errfile (env, errfile);
		2034
		2035	void set_msgfile (DB_ENV *env, FILE *msgfile = 0)
		2036	CODE:
		2037	env->set_msgfile (env, msgfile);
		2038
		2039	int set_verbose (DB_ENV *env, U32 which = -1, int onoff = 1)
		2040	CODE:
		2041	RETVAL = env->set_verbose (env, which, onoff);
		2042	OUTPUT:
		2043	RETVAL
		2044
		2045	int set_encrypt (DB_ENV *env, const char *password, U32 flags = 0)
		2046	CODE:
		2047	RETVAL = env->set_encrypt (env, password, flags);
		2048	OUTPUT:
		2049	RETVAL
		2050
		2051	int set_timeout (DB_ENV *env, NV timeout, U32 flags = DB_SET_TXN_TIMEOUT)
		2052	CODE:
		2053	RETVAL = env->set_timeout (env, timeout * 1000000, flags);
		2054	OUTPUT:
		2055	RETVAL
		2056
		2057	int set_mp_max_openfd (DB_ENV *env, int maxopenfd);
		2058	CODE:
		2059	RETVAL = env->set_mp_max_openfd (env, maxopenfd);
		2060	OUTPUT:
		2061	RETVAL
		2062
		2063	int set_mp_max_write (DB_ENV *env, int maxwrite, int maxwrite_sleep);
		2064	CODE:
		2065	RETVAL = env->set_mp_max_write (env, maxwrite, maxwrite_sleep);
		2066	OUTPUT:
		2067	RETVAL
		2068
		2069	int set_mp_mmapsize (DB_ENV *env, int mmapsize_mb)
		2070	CODE:
		2071	RETVAL = env->set_mp_mmapsize (env, ((size_t)mmapsize_mb) << 20);
		2072	OUTPUT:
		2073	RETVAL
		2074
		2075	int set_lk_detect (DB_ENV *env, U32 detect = DB_LOCK_DEFAULT)
		2076	CODE:
		2077	RETVAL = env->set_lk_detect (env, detect);
		2078	OUTPUT:
		2079	RETVAL
		2080
		2081	int set_lk_max_lockers (DB_ENV *env, U32 max)
		2082	CODE:
		2083	RETVAL = env->set_lk_max_lockers (env, max);
		2084	OUTPUT:
		2085	RETVAL
		2086
		2087	int set_lk_max_locks (DB_ENV *env, U32 max)
		2088	CODE:
		2089	RETVAL = env->set_lk_max_locks (env, max);
		2090	OUTPUT:
		2091	RETVAL
		2092
		2093	int set_lk_max_objects (DB_ENV *env, U32 max)
		2094	CODE:
		2095	RETVAL = env->set_lk_max_objects (env, max);
		2096	OUTPUT:
		2097	RETVAL
		2098
		2099	int set_lg_bsize (DB_ENV *env, U32 max)
		2100	CODE:
		2101	RETVAL = env->set_lg_bsize (env, max);
		2102	OUTPUT:
		2103	RETVAL
		2104
		2105	int set_lg_max (DB_ENV *env, U32 max)
		2106	CODE:
		2107	RETVAL = env->set_lg_max (env, max);
		2108	OUTPUT:
		2109	RETVAL
		2110
		2111	int mutex_set_max (DB_ENV *env, U32 max)
		2112	CODE:
		2113	RETVAL = env->mutex_set_max (env, max);
		2114	OUTPUT:
		2115	RETVAL
		2116
		2117	int mutex_set_increment (DB_ENV *env, U32 increment)
		2118	CODE:
		2119	RETVAL = env->mutex_set_increment (env, increment);
		2120	OUTPUT:
		2121	RETVAL
		2122
		2123	int mutex_set_tas_spins (DB_ENV *env, U32 tas_spins)
		2124	CODE:
		2125	RETVAL = env->mutex_set_tas_spins (env, tas_spins);
		2126	OUTPUT:
		2127	RETVAL
		2128
		2129	int mutex_set_align (DB_ENV *env, U32 align)
		2130	CODE:
		2131	RETVAL = env->mutex_set_align (env, align);
		2132	OUTPUT:
		2133	RETVAL
		2134
		2135	DB_TXN *
		2136	txn_begin (DB_ENV *env, DB_TXN_ornull *parent = 0, U32 flags = 0)
		2137	CODE:
		2138	errno = env->txn_begin (env, parent, &RETVAL, flags);
		2139	if (errno)
		2140	croak ("DB_ENV->txn_begin: %s", db_strerror (errno));
		2141	OUTPUT:
		2142	RETVAL
		2143
		2144	#if DB_VERSION_MINOR >= 5
		2145
		2146	DB_TXN *
		2147	cdsgroup_begin (DB_ENV *env)
		2148	CODE:
		2149	errno = env->cdsgroup_begin (env, &RETVAL);
		2150	if (errno)
		2151	croak ("DB_ENV->cdsgroup_begin: %s", db_strerror (errno));
		2152	OUTPUT:
		2153	RETVAL
		2154
		2155	#endif
		2156
		2157	MODULE = BDB PACKAGE = BDB::Db
		2158
		2159	void
		2160	DESTROY (DB_ornuked *db)
		2161	CODE:
		2162	if (db)
		2163	{
		2164	SV *env = (SV *)db->app_private;
		2165	db->close (db, 0);
		2166	SvREFCNT_dec (env);
		2167	}
		2168
		2169	int set_cachesize (DB *db, U32 gbytes, U32 bytes, int ncache = 0)
		2170	CODE:
		2171	RETVAL = db->set_cachesize (db, gbytes, bytes, ncache);
		2172	OUTPUT:
		2173	RETVAL
		2174
		2175	int set_flags (DB *db, U32 flags)
		2176	CODE:
		2177	RETVAL = db->set_flags (db, flags);
		2178	OUTPUT:
		2179	RETVAL
		2180
		2181	int set_encrypt (DB *db, const char *password, U32 flags)
		2182	CODE:
		2183	RETVAL = db->set_encrypt (db, password, flags);
		2184	OUTPUT:
		2185	RETVAL
		2186
		2187	int set_lorder (DB *db, int lorder)
		2188	CODE:
		2189	RETVAL = db->set_lorder (db, lorder);
		2190	OUTPUT:
		2191	RETVAL
		2192
		2193	int set_bt_minkey (DB *db, U32 minkey)
		2194	CODE:
		2195	RETVAL = db->set_bt_minkey (db, minkey);
		2196	OUTPUT:
		2197	RETVAL
		2198
		2199	int set_re_delim (DB *db, int delim)
		2200	CODE:
		2201	RETVAL = db->set_re_delim (db, delim);
		2202	OUTPUT:
		2203	RETVAL
		2204
		2205	int set_re_pad (DB *db, int re_pad)
		2206	CODE:
		2207	RETVAL = db->set_re_pad (db, re_pad);
		2208	OUTPUT:
		2209	RETVAL
		2210
		2211	int set_re_source (DB *db, char *source)
		2212	CODE:
		2213	RETVAL = db->set_re_source (db, source);
		2214	OUTPUT:
		2215	RETVAL
		2216
		2217	int set_re_len (DB *db, U32 re_len)
		2218	CODE:
		2219	RETVAL = db->set_re_len (db, re_len);
		2220	OUTPUT:
		2221	RETVAL
		2222
		2223	int set_h_ffactor (DB *db, U32 h_ffactor)
		2224	CODE:
		2225	RETVAL = db->set_h_ffactor (db, h_ffactor);
		2226	OUTPUT:
		2227	RETVAL
		2228
		2229	int set_h_nelem (DB *db, U32 h_nelem)
		2230	CODE:
		2231	RETVAL = db->set_h_nelem (db, h_nelem);
		2232	OUTPUT:
		2233	RETVAL
		2234
		2235	int set_q_extentsize (DB *db, U32 extentsize)
		2236	CODE:
		2237	RETVAL = db->set_q_extentsize (db, extentsize);
		2238	OUTPUT:
		2239	RETVAL
		2240
		2241	DBC *
		2242	cursor (DB *db, DB_TXN_ornull *txn = 0, U32 flags = 0)
		2243	CODE:
		2244	errno = db->cursor (db, txn, &RETVAL, flags);
		2245	if (errno)
		2246	croak ("DB->cursor: %s", db_strerror (errno));
		2247	OUTPUT:
		2248	RETVAL
		2249
		2250	DB_SEQUENCE *
		2251	sequence (DB *db, U32 flags = 0)
		2252	CODE:
		2253	{
		2254	errno = db_sequence_create (&RETVAL, db, flags);
		2255	if (errno)
		2256	croak ("db_sequence_create: %s", db_strerror (errno));
		2257	}
		2258	OUTPUT:
		2259	RETVAL
		2260
		2261
		2262	MODULE = BDB PACKAGE = BDB::Txn
		2263
		2264	void
		2265	DESTROY (DB_TXN_ornuked *txn)
		2266	CODE:
		2267	if (txn)
		2268	txn->abort (txn);
		2269
		2270	int set_timeout (DB_TXN *txn, NV timeout, U32 flags = DB_SET_TXN_TIMEOUT)
		2271	CODE:
		2272	RETVAL = txn->set_timeout (txn, timeout * 1000000, flags);
		2273	OUTPUT:
		2274	RETVAL
		2275
		2276	int failed (DB_TXN *txn)
		2277	CODE:
		2278	RETVAL = !!(txn->flags & TXN_DEADLOCK);
		2279	OUTPUT:
		2280	RETVAL
		2281
		2282
		2283	MODULE = BDB PACKAGE = BDB::Cursor
		2284
		2285	void
		2286	DESTROY (DBC_ornuked *dbc)
		2287	CODE:
		2288	if (dbc)
		2289	dbc->c_close (dbc);
		2290
		2291	#if DB_VERSION_MINOR >= 6
		2292
		2293	int set_priority (DBC *dbc, int priority)
		2294	CODE:
		2295	dbc->set_priority (dbc, priority);
		2296
		2297	#endif
		2298
		2299	MODULE = BDB PACKAGE = BDB::Sequence
		2300
		2301	void
		2302	DESTROY (DB_SEQUENCE_ornuked *seq)
		2303	CODE:
		2304	if (seq)
		2305	seq->close (seq, 0);
		2306
		2307	int initial_value (DB_SEQUENCE *seq, db_seq_t value)
		2308	CODE:
		2309	RETVAL = seq->initial_value (seq, value);
		2310	OUTPUT:
		2311	RETVAL
		2312
		2313	int set_cachesize (DB_SEQUENCE *seq, U32 size)
		2314	CODE:
		2315	RETVAL = seq->set_cachesize (seq, size);
		2316	OUTPUT:
		2317	RETVAL
		2318
		2319	int set_flags (DB_SEQUENCE *seq, U32 flags)
		2320	CODE:
		2321	RETVAL = seq->set_flags (seq, flags);
		2322	OUTPUT:
		2323	RETVAL
		2324
		2325	int set_range (DB_SEQUENCE *seq, db_seq_t min, db_seq_t max)
		2326	CODE:
		2327	RETVAL = seq->set_range (seq, min, max);
		2328	OUTPUT:
		2329	RETVAL
		2330
		2331

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