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- Data_structure_alignment abstract "Data structure alignment is the way data is arranged and accessed in computer memory. It consists of two separate but related issues: data alignment and data structure padding. When a modern computer reads from or writes to a memory address, it will do this in word sized chunks (e.g. 4 byte chunks on a 32-bit system). Data alignment means putting the data at a memory offset equal to some multiple of the word size, which increases the system's performance due to the way the CPU handles memory. To align the data, it may be necessary to insert some meaningless bytes between the end of the last data structure and the start of the next, which is data structure padding.For example, when the computer's word size is 4 bytes (a byte means 8 bits on most machines, but could be different on some systems), the data to be read should be at a memory offset which is some multiple of 4. When this is not the case, e.g. the data starts at the 14th byte instead of the 16th byte, then the computer has to read two 4 byte chunks and do some calculation before the requested data has been read, or it may generate an alignment fault. Even though the previous data structure ends at the 13th byte, the next data structure should start at the 16th byte. Two padding bytes are inserted between the two data structures to align the next data structure to the 16th byte.Although data structure alignment is a fundamental issue for all modern computers, many computer languages and computer language implementations handle data alignment automatically. Ada, certain C and C++ implementations, D, and assembly language allow at least partial control of data structure padding, which may be useful in certain special circumstances.".
- Data_structure_alignment wikiPageExternalLink csapp.cs.cmu.edu.
- Data_structure_alignment wikiPageExternalLink 245317.htm.
- Data_structure_alignment wikiPageExternalLink Structure_002dPacking-Pragmas.html.
- Data_structure_alignment wikiPageExternalLink 2e70t5y1(VS.80).aspx.
- Data_structure_alignment wikiPageExternalLink ms253949.aspx.
- Data_structure_alignment wikiPageExternalLink data-alignment-when-migrating-to-64-bit-intel-architecture.
- Data_structure_alignment wikiPageExternalLink 852569B20050FF778525699600719DF2.
- Data_structure_alignment wikiPageExternalLink cxx-data-alignment-portability.
- Data_structure_alignment wikiPageExternalLink ByteAlignmentAndOrdering.htm.
- Data_structure_alignment wikiPageExternalLink pa-dalign.
- Data_structure_alignment wikiPageID "2247927".
- Data_structure_alignment wikiPageRevisionID "605583016".
- Data_structure_alignment hasPhotoCollection Data_structure_alignment.
- Data_structure_alignment subject Category:Compiler_construction.
- Data_structure_alignment subject Category:Composite_data_types.
- Data_structure_alignment comment "Data structure alignment is the way data is arranged and accessed in computer memory. It consists of two separate but related issues: data alignment and data structure padding. When a modern computer reads from or writes to a memory address, it will do this in word sized chunks (e.g. 4 byte chunks on a 32-bit system). Data alignment means putting the data at a memory offset equal to some multiple of the word size, which increases the system's performance due to the way the CPU handles memory.".
- Data_structure_alignment label "Alignement en mémoire".
- Data_structure_alignment label "Data structure alignment".
- Data_structure_alignment label "Speicherausrichtung".
- Data_structure_alignment label "Выравнивание данных".
- Data_structure_alignment sameAs Zarovnání_paměti.
- Data_structure_alignment sameAs Speicherausrichtung.
- Data_structure_alignment sameAs Alignement_en_mémoire.
- Data_structure_alignment sameAs m.06z0_z.
- Data_structure_alignment sameAs Q1413745.
- Data_structure_alignment sameAs Q1413745.
- Data_structure_alignment wasDerivedFrom Data_structure_alignment?oldid=605583016.
- Data_structure_alignment isPrimaryTopicOf Data_structure_alignment.