Asks the runtime to allocate a unique identity for a layer identified by the layer's name.
#include <prio.h> PRDescIdentity PR_GetUniqueIdentity(const char *layer_name);
The function has the following parameter:
- The string associated with the creation of a layer's identity.
The function returns one of the following values:
- If successful, the
PRDescIdentityfor the layer associated with the string specified in the layer named
- If the function cannot allocate enough dynamic memory, it fails and returns the value
PR_INVALID_IO_LAYERwith the error code
A string may be associated with a layer when the layer is created.
PR_GetUniqueIdentity allocates a unique layer identity and associates it with the string. The string can be subsequently passed to
PR_CreateIOLayerStub to create a new file descriptor of that layer.
PR_GetUniqueIdentity only once for any particular layer name. If you're creating a custom I/O layer, cache the result, and then use that cached result every time you call