perl XS and C struct (works)

kopolov has asked for the wisdom of the Perl Monks concerning the following question:

Hi there, I'm a newbie to perlXS. I have a C code which contains different structs

typedef struct {
    EntryType type;
    EntryIndex index;
} TM_TranslationEntry;

typedef struct {
    u64 EA, VA, RA;
    u8 pageSize;
    u32 numOfEntries;
    TM_TranslationEntry* entries;
    u32 modificationSet;
} TM_PageTranslation;

typedef struct {
    TM_InMemoryEntry* entries;
    u32 numOfEntries;
} TM_InMemoryEntries;

typedef struct {
    u64 slbee;
    u64 slbev;
} TM_SlbEntry;
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This is my typemap file:

TYPEMAP
PageTranslation     T_PTROBJ
TM_InMemoryEntries  T_PTROBJ
TM_SlbEntry         T_PTROBJ
TM_TranslationEntry T_PTROBJ
U64                 T_UV
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This is my trans.xs file header:

#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"

#include "ppport.h"

#include "TM_TranslationAPI.h" <--- include for the C code

typedef struct TM_PageTranslation * PageTranslation
typedef struct TM_InMemoryEntries * InMemoryEntries
typedef struct TM_SlbEntry * SlbEntry
typedef struct TM_TranslationEntry * TranslationEntry
MODULE = trans        PACKAGE = trans        

PROTOTYPES: ENABLE
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and I have these functions inside the XS file which fails (only a sample):

InMemoryEntries
selectMemoryEntriesSet(type)
    U64 type

InMemoryEntries
getEntryByType(pageTranslation, entryType)
    PageTranslation pageTranslation
    U64 entryType

SlbEntry
getSlbEntry(pageTranslation)
    PageTranslation pageTranslation
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failing line:

Error: 'InMemoryEntries' not in typemap in trans.xs, line 167
Error: 'InMemoryEntries' not in typemap in trans.xs, line 172
Error: 'SlbEntry' not in typemap in trans.xs, line 176
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I want to note one thing: prior to the functions which fails due to typemap issues, there are functions with PageTranslation which seems to pass (compiler does not give any errors/warning about them). As you can see, PageTranslation is also defined in the typemap. What am I doing wrong? **** update - found my mistake typemap naming should contain the names I chose for the struct and not the struct themselves (InMemoryEntries instead of TM_InMemoryEntries)

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