On processors for D ~ decoupling

Thu Apr 6 16:42:16 PDT 2006

On Thu, 06 Apr 2006 13:52:08 -0700, Walter Bright wrote:

>> Instead of adding a duplicate itoa() method (about 60 bytes of code), or 
>> perhaps linking to the C library version, TypeInfo gratuitously imports 
>> std.string and all its vast array of baggage. Heck, everyone makes 
>> mistakes, but your comment above indicates you feel this kind of tight 
>> coupling is perfectly fine?
> 
> Although there is a lot of code in std.string, unreferenced free 
> functions in it should be discarded by the linker. A check of the 
> generated .map file should verify this - it is certainly supposed to 
> work that way. One problem Java has is that there are no free functions, 
> so referencing one function wound up pulling in every part of the class 
> the function resided in.

The following program ...

  void main() {}

linked in the following modules (from the .map file)

----------------
??0RTLHeap@@QAE at XZ
??0RTLHeapBlock@@QAE at IAAV0@@Z
??0RTLHeapBlock@@QAE at XZ
??0RTLHeapBlockHeader@@QAE at I@Z
??0RTLMultiPool@@QAE at II@Z
??0RTLPool@@QAE at II@Z
??0Type_info@@AAA at ABV0@@Z
??0bad_cast at std@@QAE at ABV01@@Z
??0bad_cast at std@@QAE at XZ
??0exception at std@@QAE at XZ
??0type_info at std@@IAE at XZ
??1RTLMultiPool@@QAE at XZ
??1Type_info@@UAA at XZ
??1__eh_cv@@QAE at XZ
??1bad_cast at std@@UAE at XZ
??1bad_exception at std@@UAE at XZ
??1bad_typeid at std@@UAE at XZ
??1exception at std@@UAE at XZ
??1type_info at std@@UAA at XZ
??2 at YAPAXI@Z
??3 at YAXPAX@Z
??_GType_info@@UAEPAXI at Z
??_Gbad_cast at std@@UAEPAXI at Z
??_Gbad_exception at std@@UAEPAXI at Z
??_Gbad_typeid at std@@UAEPAXI at Z
??_Gexception at std@@UAEPAXI at Z
??_Gtype_info at std@@UAEPAXI at Z
??_QType_info@@6B@
??_Qbad_cast at std@@6B@
??_Qbad_exception at std@@6B@
??_Qbad_typeid at std@@6B@
??_Qexception at std@@6B@
??_Qtype_info at std@@6B@
?Alloc at RTLHeap@@QAEPAXK at Z
?Alloc at RTLMultiPool@@QAEPAXK at Z
?Alloc at RTLPool@@QAEPAXXZ
?Claim at RTLHeapBlock@@QAEHI at Z
?CreateMainHeap at RTLHeap@@SAXXZ
?CreateMainHeap at RTLMultiPool@@SAXXZ
?FixSize at RTLHeap@@AAEII at Z
?Free at RTLHeap@@QAEXPAX at Z
?Free at RTLMultiPool@@QAEXPAX at Z
?Free at RTLPool@@QAEXPAX at Z
?GetNext at RTLHeapBlock@@QAEAAV1 at XZ
?Handle_VC_Exception@@YAPAUEhstack@@PAU_EXCEPTION_RECORD@@H at Z
?InsertAfter at RTLHeapBlock@@QAEXAAV1@@Z
?MergeBackward at RTLHeapBlock@@QAEHXZ
?MergeForward at RTLHeapBlock@@QAEHXZ
?MoreCore at RTLHeap@@AAEPAVRTLHeapBlock@@I at Z
?Realloc at RTLHeap@@QAEPAXPAXK at Z
?Realloc at RTLMultiPool@@QAEPAXPAXK at Z
?Reclaim at RTLHeapBlock@@QAEHIAAV1@@Z
?Remove at RTLHeapBlock@@QAEXXZ
?SelectFree at RTLMultiPool@@AAEXPAX at Z
?ThreadNewBlock at RTLPool@@AAEXXZ
?__cpp_local_unwind@@YAXPAU_CPP_Establisher_Frame@@PADH at Z
?__do_newalloc@@YAPAXI at Z
?__eh_delete@@YAXPAX at Z
?__eh_delp@@3P6AXPAX at ZA
?__eh_error@@YAXXZ
?__eh_new@@YAPAXI at Z
?__eh_newp@@3P6APAXI at ZA
?__eh_throw@@YAXPBDP6CHXZIZZ
?__internal_cpp_framehandler@@YA?AW4_EXCEPTION_DISPOSITION@@PAUfunc_data@@PAU_EXCEPTION_RECORD@@PAU_CPP_Establisher_Frame@@PAU_CONTEXT@@PAX at Z
?__new_handler_type@@3HA
?__rtti_cast@@YAPAXPAX0PBD1H at Z
?__rtti_match@@YAHPBD0PAI at Z
?_call_catch_block@@YAXJIP6CHXZ at Z
?_new_handler@@3P6AHI at ZA
?match_with_vc_throw_type@@YAHPAUThrowInfo@@PADPAI at Z
?pMainHeap at RTLHeap@@0PAV1 at A
?pMainHeap at RTLMultiPool@@0PAV1 at A
?pPools at RTLPool@@0PAV1 at A
?set_terminate@@YAP6AXXZP6AXXZ at Z
?set_terminate at std@@YAP6AXXZP6AXXZ at Z
?set_unexpected@@YAP6AXXZP6AXXZ at Z
?set_unexpected at std@@YAP6AXXZP6AXXZ at Z
?terminate@@YAXXZ
?terminate_fp@@3P6AXXZA
?unexpected@@YAXXZ
?unexpected_fp@@3P6AXXZA
?what at bad_cast@std@@UBEPBDXZ
?what at bad_exception@std@@UBEPBDXZ
?what at bad_typeid@std@@UBEPBDXZ
?what at exception@std@@UBEPBDXZ
_CW_USEDEFAULT
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_D3std3uni10toUniUpperFwZw
_D3std3utf10UTF8strideG256h
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_D3std3utf6decodeFAaKkZw
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_D3std3utf6toUTF8FG4awZAa
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_D3std6string2LSw
_D3std6string2PSw
_D3std6string3cmpFAaAaZi
_D3std6string4findFAawZi
_D3std6string6columnFAaiZi
_D3std6string6digitsG10a
_D3std6string7iswhiteFwZi
_D3std6string7lettersG52a
_D3std6string7newlineG2a
_D3std6string8toStringFkZAa
_D3std6string9hexdigitsG16a
_D3std6string9inPatternFwAaZi
_D3std6string9lowercaseG26a
_D3std6string9octdigitsG8a
_D3std6string9uppercaseG26a
_D3std6thread11ThreadError5_ctorFAaZC3std6thread11ThreadError
_D3std6thread20os_query_stackBottomFZPv
_D3std6thread6Thread10allThreadsG1024C3std6thread6Thread
_D3std6thread6Thread10threadLockC6Object
_D3std6thread6Thread11_staticDtorFZv
_D3std6thread6Thread11setPriorityFE3std6thread6Thread8PRIORITYZv
_D3std6thread6Thread11thread_initFZv
_D3std6thread6Thread13allThreadsDimk
_D3std6thread6Thread22getCurrentThreadHandleFZT3std1c7windows7windows6HANDLE
_D3std6thread6Thread3runFZi
_D3std6thread6Thread4waitFZv
_D3std6thread6Thread4waitFkZv
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_D3std6thread6Thread5errorFAaZv
_D3std6thread6Thread5pauseFZv
_D3std6thread6Thread5startFZv
_D3std6thread6Thread6getAllFZAC3std6thread6Thread
_D3std6thread6Thread6resumeFZv
_D3std6thread6Thread7getThisFZC3std6thread6Thread
_D3std6thread6Thread8getStateFZE3std6thread6Thread2TS
_D3std6thread6Thread8nthreadsk
_D3std6thread6Thread8pauseAllFZv
_D3std6thread6Thread9resumeAllFZv
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_D3std8typeinfo7ti_char10TypeInfo_a4swapFPvPvZv
_D3std8typeinfo7ti_char10TypeInfo_a5tsizeFZk
_D3std8typeinfo7ti_char10TypeInfo_a6equalsFPvPvZi
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_D3std8typeinfo7ti_char10TypeInfo_a8toStringFZAa
_D3std8typeinfo7ti_uint10TypeInfo_k4swapFPvPvZv
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_D3std8typeinfo7ti_uint10TypeInfo_k6equalsFPvPvZi
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_D3std8typeinfo7ti_uint10TypeInfo_k8toStringFZAa
_D5win3210os_mem_mapFkZPv
_D5win3212os_mem_unmapFPvkZi
_D5win3213os_mem_commitFPvkkZi
_D5win3215os_mem_decommitFPvkkZi
_D5win3220os_query_stackBottomFZPv
_D5win3222os_query_staticdatasegFPPvPkZv
_D6gcbits6GCBits10BITS_SHIFTi
_D6gcbits6GCBits13BITS_PER_WORDi
_D6gcbits6GCBits3setFkZv
_D6gcbits6GCBits4DtorFZv
_D6gcbits6GCBits4baseFZPk
_D6gcbits6GCBits4copyFPS6gcbits6GCBitsZv
_D6gcbits6GCBits4testFkZk
_D6gcbits6GCBits4zeroFZv
_D6gcbits6GCBits5allocFkZv
_D6gcbits6GCBits9BITS_MASKi
_D6gcbits6GCBits9testClearFkZk
_D6object14TypeInfo_Array4swapFPvPvZv
_D6object14TypeInfo_Array5tsizeFZk
_D6object14TypeInfo_Array6equalsFPvPvZi
_D6object14TypeInfo_Array7compareFPvPvZi
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_D6object14TypeInfo_Array8toStringFZAa
_D6object14TypeInfo_Class5tsizeFZk
_D6object14TypeInfo_Class6equalsFPvPvZi
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_D6object15TypeInfo_Struct5tsizeFZk
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_DeleteCriticalSection at 4
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_FREEBUF
_FileTimeToDosDateTime at 12
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_FindFirstFileA at 8
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_HKEY_CLASSES_ROOT
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_MAILSLOT_NO_MESSAGE
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__imp__GetOEMCP at 0
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__imp__GetThreadContext at 8
__imp__GetTickCount at 0
__imp__InitializeCriticalSection at 4
__imp__LCMapStringA at 24
__imp__LeaveCriticalSection at 4
__imp__MessageBoxA at 16
__imp__MultiByteToWideChar at 24
__imp__RaiseException at 16
__imp__ReleaseSemaphore at 12
__imp__ResumeThread at 4
__imp__SetConsoleCtrlHandler at 8
__imp__SetFilePointer at 16
__imp__SetHandleCount at 4
__imp__SetThreadPriority at 8
__imp__SetUnhandledExceptionFilter at 4
__imp__SuspendThread at 4
__imp__UnhandledExceptionFilter at 4
__imp__VirtualAlloc at 16
__imp__VirtualFree at 12
__imp__WaitForSingleObject at 8
__imp__WideCharToMultiByte at 32
__imp__WriteConsoleA at 20
__init_10ModuleInfo
__init_10TypeInfo_a
__init_10TypeInfo_k
__init_11TypeInfo_Aa
__init_13TypeInfo_Enum
__init_14TypeInfo_Array
__init_14TypeInfo_Class
__init_15TypeInfo_Struct
__init_16TypeInfo_Pointer
__init_16TypeInfo_Typedef
__init_17TypeInfo_Delegate
__init_17TypeInfo_Function
__init_20TypeInfo_StaticArray
__init_25TypeInfo_AssociativeArray
__init_3adi5Array
__init_3gcx2GC
__init_3gcx3Gcx
__init_3gcx4List
__init_3gcx4Pool
__init_3gcx5Range
__init_3gcx6GCLock
__init_3std10moduleinit15ModuleCtorError
__init_3std11outofmemory20OutOfMemoryException
__init_3std1c7windows7windows10BITMAPINFO
__init_3std1c7windows7windows10LOGPALETTE
__init_3std1c7windows7windows10OVERLAPPED
__init_3std1c7windows7windows10SYSTEMTIME
__init_3std1c7windows7windows11DLGTEMPLATE
__init_3std1c7windows7windows11PAINTSTRUCT
__init_3std1c7windows7windows11TEXTMETRICA
__init_3std1c7windows7windows11WNDCLASSEXA
__init_3std1c7windows7windows12MEMORYSTATUS
__init_3std1c7windows7windows12PALETTEENTRY
__init_3std1c7windows7windows13OPENFILENAMEA
__init_3std1c7windows7windows13OPENFILENAMEW
__init_3std1c7windows7windows15WIN32_FIND_DATA
__init_3std1c7windows7windows16BITMAPINFOHEADER
__init_3std1c7windows7windows16WIN32_FIND_DATAW
__init_3std1c7windows7windows18FLOATING_SAVE_AREA
__init_3std1c7windows7windows19SECURITY_ATTRIBUTES
__init_3std1c7windows7windows21PIXELFORMATDESCRIPTOR
__init_3std1c7windows7windows21TIME_ZONE_INFORMATION
__init_3std1c7windows7windows24MEMORY_BASIC_INFORMATION
__init_3std1c7windows7windows3MSG
__init_3std1c7windows7windows4RECT
__init_3std1c7windows7windows5POINT
__init_3std1c7windows7windows6BITMAP
__init_3std1c7windows7windows6LOGPEN
__init_3std1c7windows7windows7CONTEXT
__init_3std1c7windows7windows7RGBQUAD
__init_3std1c7windows7windows8FILETIME
__init_3std1c7windows7windows8LOGFONTA
__init_3std1c7windows7windows9WNDCLASSA
__init_3std2gc5Array
__init_3std3utf12UtfException
__init_3std3utf8UtfError
__init_3std5array16ArrayBoundsError
__init_3std6string15StringException
__init_3std6thread11ThreadError
__init_3std6thread6Thread
__init_6Object
__init_6gcbits6GCBits
__init_6object5Error
__init_6object9Interface
__init_8TypeInfo
__init_9ClassInfo
__init_9Exception
__iob
__isctype
__ismbblead
__ismbcdigit
__local_except_handler
__local_unwind
__mbctype
__mbschr
__minit
__moddtor_3std6thread
__moduleCtor
__moduleDtor
__moduleUnitTests
__moduleinfo_array
__nullext
__opti_stosd
__osfhnd
__osmode
__osver
__pCPPExceptionFilter
__pPreviousUnhandledExceptionFilter
__pctype
__pformat
__pgmptr
__pwctype
__rtl_critical_enter
__rtl_critical_exit
__semerr
__setargv
__setenvp
__setmbcp
__status87
__szSemPrefix
__szSemPrefixLen
__tab_size
__thread1
__thread_init
__vtbl_10ModuleInfo
__vtbl_10TypeInfo_a
__vtbl_10TypeInfo_k
__vtbl_11TypeInfo_Aa
__vtbl_13TypeInfo_Enum
__vtbl_14TypeInfo_Array
__vtbl_14TypeInfo_Class
__vtbl_15TypeInfo_Struct
__vtbl_16TypeInfo_Pointer
__vtbl_16TypeInfo_Typedef
__vtbl_17TypeInfo_Delegate
__vtbl_17TypeInfo_Function
__vtbl_20TypeInfo_StaticArray
__vtbl_25TypeInfo_AssociativeArray
__vtbl_3gcx2GC
__vtbl_3gcx6GCLock
__vtbl_3std10moduleinit15ModuleCtorError
__vtbl_3std11outofmemory20OutOfMemoryException
__vtbl_3std3utf12UtfException
__vtbl_3std3utf8UtfError
__vtbl_3std5array16ArrayBoundsError
__vtbl_3std6string15StringException
__vtbl_3std6thread11ThreadError
__vtbl_3std6thread6Thread
__vtbl_6Object
__vtbl_6object5Error
__vtbl_8TypeInfo
__vtbl_9ClassInfo
__vtbl_9Exception
__wargv
__wenviron
__wenvptr
__win32_faterr
__win32_stderrmsg
__winmajor
__winminor
__winver
__wpgmptr
__xc_a
__xc_z
__xi_a
__xi_z
__xp_a
__xp_z
__xt_a
__xt_z
_abort
_calloc
_close
_edata
_end
_errno
_exit
_fclose
_fegetenv
_fesetenv
_fflush
_fgetc
_findfirst
_findnext
_flushall
_fprintf
_fputc
_free
_gc_init
_gc_term
_isatty
_itoa
_lseek
_main
_mainCRTStartup
_malloc
_mbtowc
_memchr
_memcmp
_memcpy
_memicmp
_memmove
_memset
_no_catch_exceptions
_printf
_raise
_read
_realloc
_remove
_sbrk
_setvbuf
_signal
_sprintf
_strcat
_strchr
_strcmp
_strcpy
_strdup
_strlen
_strtold
_tolower
_ultoa
_unmangle_ident
_unmangle_pt
_vfprintf
_vprintf
_vsprintf
_wcscpy
_wcslen
_wctomb
_write
roundto0
----------------

So I either the map file is wrong (or I misunderstood it), the linker is
not stripping out 'unreferenced' functions, or there are many more
referenced functions than you suspected.

-- 
Derek
(skype: derek.j.parnell)
Melbourne, Australia
"Down with mediocracy!"
7/04/2006 9:39:07 AM