Mercurial > noffle

annotate src/control.h @ 165:8ea6b5ddc5a5 noffle

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[svn] * src/lock.h,src/lock.c,src/noffle.c: Add lazy lock release. Only release the lock and close the databases if (a) another process signals us SIGUSR1 indicating it wants the lock, or (b) it is explicitly requested by a call to new function Lock_syncDatabases(). When waiting for the lock, SIGUSR1 the holding process every second. This is all an attempt to minimise the number of times we need to close and open the database. When (ha!) the database is replaced by something that can handle multiple simultaneous writers (with appropriate locking) this won't be necessary.
author bears
date Thu, 25 Jan 2001 13:38:31 +0000
parents 32ba1198c6fa
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 control.h
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4 Control actions needed by server and command line.
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6 $Id: control.h 51 2000-05-05 23:49:38Z uh1763 $
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7 */
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9 #ifndef CONTROL_H
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10 #define CONTROL_H
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12 #if HAVE_CONFIG_H
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13 #include <config.h>
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14 #endif
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16 #define CANCEL_OK 0
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17 #define CANCEL_NO_SUCH_MSG 1
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18 #define CANCEL_NEEDS_MSG 2
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20 /*
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21 Cancel a message. Return CANCEL_OK if completely cancelled,
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22 CANCEL_NO_SUCH_MSG if no message with that ID exists, and
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23 CANCEL_NEEDS_MSG if a 'cancel' message should be propagated upstream
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24 to cancel the message elsewhere.
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25 */
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26 int
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27 Ctrl_cancel( const char *msgId );
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29 #endif