GDSX Manual

Service Routines

Extended General Device Support (GDSX) Manual–134303

8-12

BIT^MAP

A trace record is written after a successful call to ^BEGINTRANSACTION if bit 3 of

trace^control^flags in DCCBDECS is set to 1. The trace records contain the calling task

number and the TMF transaction identifier. See “Tracing GDSX” on page 2-77 for more

information.

Except for the following considerations, the syntax, condition code settings, and

considerations regarding this procedure are the same as given for the TMF counterpart in

the NonStop TM/MP Application Programmer’s Guide.

Considerations

•

This procedure differs from its TMF counterpart by not allowing the trans-

begin-tag parameter. Even though you may not use this parameter, a transid for

the TMF transaction is returned to TSCODE and is stored in the variable transtag of

tcb^template.

•

A maximum of 100 concurrent TMF transactions are allowed for any single

multithreaded Guardian process. An attempt to issue more than 100 concurrent

^BEGINTRANSACTION calls is rejected with error 83.

A warning message displays when GDSX is started with more than 100 tasks

configured and the TMF configuration parameter is set to 2. The warning message

is:

10016 Number of tasks exceed limit with TMF

See “MAXTASKS” on page 2-65.

BIT^MAP

This procedure searches a specified range within a bit map table in either global or

extended memory, and returns the index value for the first bit found that is available

(equal to 0). The search begins with the leftmost bit (number 0) of the first word.

index returned value

INT:value

is the index value for the first available bit (equal to 0) that is in the specified range.

index := BIT^MAP ( table !

,minimum !

,maximum ); !