Language environments use the memory management utility functions to allocate storage owned by Net.Data, and to free storage that it allocated using the Net.Data run-time library.
The following example illustrates the need for these utility
functions. Suppose that Net.Data is written using compiler A,
with its corresponding run-time library. A programmer writes a new
language environment, but uses compiler B, which has a different run-time
library. The language environment cannot free storage that
Net.Data allocated, and Net.Data cannot free storage that was
allocated by the language environment because of potential incompatibilities
between the two run-time libraries.
Table 1. Memory Management Utility Functions
| Utility Function | Description |
|---|---|
| dtw_malloc() | Allocate storage from Net.Data's run-time heap using dtw_malloc(). |
| dtw_free() | Free storage allocated from Net.Data's run-time heap using dtw_malloc(). |
| dtw_strdup() | Allocate storage from Net.Data's run-time heap and copy the specified string into the allocated storage using dtw_malloc(). |