Bull DPX/20 User Manual download pdf (Page 19)

2-7

SOM Kernel Quick Reference

string somAllocate (

in long size);

Supports class-specific memory allocation for class instances. Cannot be overridden.

boolean somCheckVersion (

In long majorVersion,

In long minorVersion);

Checks a class for compatibility with the specified major and minor version numbers.

void somClassReady ();

Indicates that a class has been constructed and is ready for normal use.

void somDeallocate (

in string memPtr);

Frees memory originally allocated by the somAllocate method from the same class object. Cannot be overridden.

boolean somDescendedFrom (

in SOMClass clsPtr);

Tests whether a specified class is derived from the receiving class.

boolean somFindMethod (

in somId methodId,

out somMethodPtr m);

Finds the method procedure that implements the indicated method for a class of objects, and indicates whether the

method is a static.

boolean somFindMethodOk (

in somId methodId,

out somMethodPtr m);

As above; but if the method is not supported, this method raises an error and halts execution.

somMethodPtr somFindSMethod (

in somId methodId);

Finds the method procedure for a static method.

somMethodPtr somFindSMethodOk (

in somId methodId);

Like somFindSmethod; but if the desired static method is not supported, an error is raised and execution is halted.

long somGetInstancePartSize ();

Returns the size of the instance variables introduced by a class, in all instances of that class.

long somGetInstanceSize ();

Returns the size of an instance of a class.

somDToken somGetInstanceToken ();

Returns a token for the instance data introduced by a class.

somDToken somGetMemberToken (

long memberOffset,

somDToken instanceToken);

Returns an access token for an instance variable.

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Bull DPX/20 User Manual Page 19