… | |
… | |
24 | db_put $db, undef, "key", "data", 0, sub { |
24 | db_put $db, undef, "key", "data", 0, sub { |
25 | db_del $db, undef, "key"; |
25 | db_del $db, undef, "key"; |
26 | }; |
26 | }; |
27 | db_sync $db; |
27 | db_sync $db; |
28 | |
28 | |
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29 | # when you also use Coro, management is easy: |
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30 | use Coro::BDB; |
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31 | |
29 | # automatic result processing with AnyEvent: |
32 | # automatic result processing with AnyEvent: |
30 | our $FH; open $FH, "<&=" . BDB::poll_fileno; |
33 | our $FH; open $FH, "<&=" . BDB::poll_fileno; |
31 | our $WATCHER = AnyEvent->io (fh => $FH, poll => 'r', cb => \&BDB::poll_cb); |
34 | our $WATCHER = AnyEvent->io (fh => $FH, poll => 'r', cb => \&BDB::poll_cb); |
32 | |
35 | |
33 | # automatic result processing with EV: |
36 | # automatic result processing with EV: |
… | |
… | |
107 | use strict 'vars'; |
110 | use strict 'vars'; |
108 | |
111 | |
109 | use base 'Exporter'; |
112 | use base 'Exporter'; |
110 | |
113 | |
111 | BEGIN { |
114 | BEGIN { |
112 | our $VERSION = '1.3'; |
115 | our $VERSION = '1.41'; |
113 | |
116 | |
114 | our @BDB_REQ = qw( |
117 | our @BDB_REQ = qw( |
115 | db_env_open db_env_close db_env_txn_checkpoint db_env_lock_detect |
118 | db_env_open db_env_close db_env_txn_checkpoint db_env_lock_detect |
116 | db_env_memp_sync db_env_memp_trickle |
119 | db_env_memp_sync db_env_memp_trickle |
117 | db_open db_close db_compact db_sync db_put db_get db_pget db_del db_key_range |
120 | db_open db_close db_compact db_sync db_upgrade |
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121 | db_put db_get db_pget db_del db_key_range |
118 | db_txn_commit db_txn_abort db_txn_finish |
122 | db_txn_commit db_txn_abort db_txn_finish |
119 | db_c_close db_c_count db_c_put db_c_get db_c_pget db_c_del |
123 | db_c_close db_c_count db_c_put db_c_get db_c_pget db_c_del |
120 | db_sequence_open db_sequence_close |
124 | db_sequence_open db_sequence_close |
121 | db_sequence_get db_sequence_remove |
125 | db_sequence_get db_sequence_remove |
122 | ); |
126 | ); |
… | |
… | |
181 | |
185 | |
182 | db_open (DB *db, DB_TXN_ornull *txnid, octetstring file, octetstring database, int type, U32 flags, int mode, SV *callback = &PL_sv_undef) |
186 | db_open (DB *db, DB_TXN_ornull *txnid, octetstring file, octetstring database, int type, U32 flags, int mode, SV *callback = &PL_sv_undef) |
183 | flags: AUTO_COMMIT CREATE EXCL MULTIVERSION NOMMAP RDONLY READ_UNCOMMITTED THREAD TRUNCATE |
187 | flags: AUTO_COMMIT CREATE EXCL MULTIVERSION NOMMAP RDONLY READ_UNCOMMITTED THREAD TRUNCATE |
184 | db_close (DB *db, U32 flags = 0, SV *callback = &PL_sv_undef) |
188 | db_close (DB *db, U32 flags = 0, SV *callback = &PL_sv_undef) |
185 | flags: DB_NOSYNC |
189 | flags: DB_NOSYNC |
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190 | db_upgrade (DB *db, octetstring file, U32 flags = 0, SV *callback = &PL_sv_undef) |
186 | 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 = &PL_sv_undef) |
191 | 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 = &PL_sv_undef) |
187 | flags: FREELIST_ONLY FREE_SPACE |
192 | flags: FREELIST_ONLY FREE_SPACE |
188 | db_sync (DB *db, U32 flags = 0, SV *callback = &PL_sv_undef) |
193 | db_sync (DB *db, U32 flags = 0, SV *callback = &PL_sv_undef) |
189 | db_key_range (DB *db, DB_TXN_ornull *txn, SV *key, SV *key_range, U32 flags = 0, SV *callback = &PL_sv_undef) |
194 | db_key_range (DB *db, DB_TXN_ornull *txn, SV *key, SV *key_range, U32 flags = 0, SV *callback = &PL_sv_undef) |
190 | db_put (DB *db, DB_TXN_ornull *txn, SV *key, SV *data, U32 flags = 0, SV *callback = &PL_sv_undef) |
195 | db_put (DB *db, DB_TXN_ornull *txn, SV *key, SV *data, U32 flags = 0, SV *callback = &PL_sv_undef) |
… | |
… | |
386 | DESTROY (DBC_ornull *dbc) |
391 | DESTROY (DBC_ornull *dbc) |
387 | CODE: |
392 | CODE: |
388 | if (dbc) |
393 | if (dbc) |
389 | dbc->c_close (dbc); |
394 | dbc->c_close (dbc); |
390 | |
395 | |
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396 | $int = $cursor->set_priority ($priority = PRIORITY_*) |
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397 | |
391 | =head4 Example: |
398 | =head4 Example: |
392 | |
399 | |
393 | my $c = $db->cursor; |
400 | my $c = $db->cursor; |
394 | |
401 | |
395 | for (;;) { |
402 | for (;;) { |
… | |
… | |
669 | |
676 | |
670 | In short: the parent will, after a short pause, continue as if fork had |
677 | In short: the parent will, after a short pause, continue as if fork had |
671 | not been called, while the child will act as if BDB has not been used |
678 | not been called, while the child will act as if BDB has not been used |
672 | yet. |
679 | yet. |
673 | |
680 | |
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681 | Win32 note: there is no fork on win32, and perls emulation of it is too |
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682 | broken to be supported, so do not use BDB in a windows pseudo-fork, better |
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683 | yet, switch to a more capable platform. |
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684 | |
674 | =head2 MEMORY USAGE |
685 | =head2 MEMORY USAGE |
675 | |
686 | |
676 | Per-request usage: |
687 | Per-request usage: |
677 | |
688 | |
678 | Each aio request uses - depending on your architecture - around 100-200 |
689 | Each aio request uses - depending on your architecture - around 100-200 |