head 1.2; access; symbols RPM_4_2_1:1.1.1.5 RPM_4_2:1.1.1.5 RPM_4_1_1:1.1.1.5 RPM_4_1:1.1.1.4 RPM_4_0_5:1.1.1.3 RPM_4_0_4:1.1.1.2 RPM_4_0_3:1.1.1.1 RPM:1.1.1; locks; strict; comment @# @; 1.2 date 2008.01.02.09.53.59; author rse; state dead; branches; next 1.1; commitid z4cpSiAhOCXk5PLs; 1.1 date 2001.07.23.20.45.37; author rse; state Exp; branches 1.1.1.1; next ; 1.1.1.1 date 2001.07.23.20.45.37; author rse; state Exp; branches; next 1.1.1.2; 1.1.1.2 date 2002.01.08.00.30.10; author rse; state Exp; branches; next 1.1.1.3; 1.1.1.3 date 2003.01.18.13.49.00; author rse; state Exp; branches; next 1.1.1.4; 1.1.1.4 date 2001.12.06.00.08.11; author rse; state Exp; branches; next 1.1.1.5; 1.1.1.5 date 2003.01.18.14.04.58; author rse; state Exp; branches; next ; desc @@ 1.2 log @remove the ancient RPM 4.2.1 source tree copy @ text @ Berkeley DB: DbEnv.set_tas_spins

DbEnv.set_tas_spins

 APIRef 

import com.sleepycat.db.*;


static int
DbEnv.set_tas_spins(u_int32_t tas_spins);
	throws DbException;

Description

Specify that test-and-set mutexes should spin tas_spins times without blocking. The value defaults to 1 on uniprocessor systems and to 50 times the number of processors on multiprocessor systems.

The DbEnv.set_tas_spins interface affects the entire application, not a single database or database environment.

Although the DbEnv.set_tas_spins interface may be used to configure Berkeley DB at any time during the life of the application, it should normally be called before making any calls to the db_env_create or db_create methods.

The DbEnv.set_tas_spins method throws an exception that encapsulates a non-zero error value on failure.

The database environment's test-and-set spin count may also be set using the environment's DB_CONFIG file. The syntax of the entry in that file is a single line with the string "set_tas_spins", one or more whitespace characters, and the number of spins. Because the DB_CONFIG file is read when the database environment is opened, it will silently overrule configuration done before that time.

Errors

The DbEnv.set_tas_spins method may fail and throw an exception encapsulating a non-zero error for the following conditions:

EINVAL
An invalid flag value or parameter was specified.

The DbEnv.set_tas_spins method may fail and throw an exception for errors specified for other Berkeley DB and C library or system methods. If a catastrophic error has occurred, the DbEnv.set_tas_spins method may fail and throw a DbRunRecoveryException, in which case all subsequent Berkeley DB calls will fail in the same way.

Class

DbEnv

See Also

DbEnv.close, DbEnv.get_version_string, DbEnv.open, DbEnv.remove, DbEnv.set_cachesize, DbEnv.set_data_dir, DbEnv.set_errcall, DbEnv.set_error_stream, DbEnv.set_errpfx, DbEnv.set_feedback, DbEnv.set_flags, DbEnv.set_mutexlocks, DbEnv.set_pageyield, DbEnv.set_panicstate, DbEnv.set_recovery_init, DbEnv.set_rpc_server, DbEnv.set_region_init, DbEnv.set_shm_key, DbEnv.set_tas_spins, DbEnv.set_tmp_dir, DbEnv.set_verbose, and DbEnv.strerror.

APIRef

Copyright Sleepycat Software @ 1.1 log @Initial revision @ text @d1 1 a1 1 @ 1.1.1.1 log @Import: RPM 4.0.3 @ text @@ 1.1.1.2 log @Import: RPM 4.0.4 @ text @d1 1 a1 1 d17 1 a17 1 APIRef d26 1 a26 1 throws DbException; d68 3 d73 1 a76 1 DbEnv.set_timeout, d81 1 a81 1 APIRef @ 1.1.1.3 log @Import: RPM 4.0.5 @ text @d1 2 a2 2 a3 1 d24 1 a24 1 int d32 5 a36 5

The DbEnv.set_tas_spins method configures operations performed using the specified DbEnv handle, not all operations performed on the underlying database environment.

The DbEnv.set_tas_spins interface may be called at any time during the life of the application. d51 3 a53 3 If a catastrophic error has occurred, the DbEnv.set_tas_spins method may fail and throw a DbRunRecoveryException, in which case all subsequent Berkeley DB calls will fail in the same way. d55 1 a55 1 DbEnv d57 19 a75 1 Database Environments and Related Methods @ 1.1.1.4 log @Import: RPM 4.1 @ text @d1 2 a2 2 d4 1 d25 1 a25 1 static int d33 5 a37 5

The DbEnv.set_tas_spins interface affects the entire application, not a single database or database environment.

Although the DbEnv.set_tas_spins interface may be used to configure Berkeley DB at any time during the life of the application, it should normally be called before making any calls to the db_env_create or db_create methods. d52 3 a54 3 If a catastrophic error has occurred, the DbEnv.set_tas_spins method may fail and throw a DbRunRecoveryException, in which case all subsequent Berkeley DB calls will fail in the same way. d56 1 a56 1 DbEnv d58 1 a58 19 DbEnv.close, DbEnv.get_version_string, DbEnv.open, DbEnv.remove, DbEnv.set_cachesize, DbEnv.set_data_dir, DbEnv.set_errcall, DbEnv.set_error_stream, DbEnv.set_errpfx, DbEnv.set_feedback, DbEnv.set_flags, DbEnv.set_recovery_init, DbEnv.set_rpc_server, DbEnv.set_shm_key, DbEnv.set_tas_spins, DbEnv.set_tmp_dir, DbEnv.set_timeout, DbEnv.set_verbose, and DbEnv.strerror. @ 1.1.1.5 log @Import: RPM 4.1.1 @ text @d1 2 a2 2 a3 1 d24 1 a24 1 int d32 5 a36 5

The DbEnv.set_tas_spins method configures operations performed using the specified DbEnv handle, not all operations performed on the underlying database environment.

The DbEnv.set_tas_spins interface may be called at any time during the life of the application. d51 3 a53 3 If a catastrophic error has occurred, the DbEnv.set_tas_spins method may fail and throw a DbRunRecoveryException, in which case all subsequent Berkeley DB calls will fail in the same way. d55 1 a55 1 DbEnv d57 19 a75 1 Database Environments and Related Methods @