Studio:Scl struct sized: Difference between revisions
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Revision as of 23:38, 31 October 2008
The scl_struct_sized pragma
The scl_struct_sized pragma identifies a particular struct or pointer-to-struct as a sized structure. A sized structure typically has bytes allocated past its type definition.
Syntax
#pragma scl_struct_sized(type-name, max-size)
Parameters | Type | Description |
type-name | Struct or Struct* |
Specifies a structure type that is to be sized (allocated bytes beyond its type definition).
The following restrictions apply:
|
max-size | Field (of type-name) |
Specifies the number of bytes to be allocated for the sized struct.
The following restrictions apply:
|
Examples
Example 1
This example shows the declaration for a simple sized struct.
typedef struct {
int nSize;
int nSomeJunk;
int nMoreJunk;
} SimpleSizedStruct;
extern void f(SimpleSizedStruct* s);
#pragma scl_struct_sized(f.s, nSize);
Example 2
This example shows the declaration of a sized struct with a conformant array.
#define SOME_BOUND 0
typedef struct {
int nSize;
int nSomeJunk;
int ary[SOME_BOUND];
} ConformantArraySizedStruct;
extern void f(SimpleSizedStruct* s);
#pragma scl_struct_sized(f.s, nSize);
See Also
- For additional information on scl_string, including constraints, refer to the section on scl_struct_sized in the SCL Reference Guide.