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c++ Programming Glossary: alignmentHow to debug heap corruption errors? http://stackoverflow.com/questions/1010106/how-to-debug-heap-corruption-errors more space before and after each alloc respecting maximum alignment requirement fill with magic numbers helps catch buffer overflows..
How do malloc() and free() work? http://stackoverflow.com/questions/1119134/how-do-malloc-and-free-work only handle memory chunks that are of a specific size and alignment. To be specific Normally the OS can only handle blocks that..
Any reason to overload global new and delete? http://stackoverflow.com/questions/1152511/any-reason-to-overload-global-new-and-delete we do this more with local operator overloads than global alignment adjustment to cacheline boundaries etc alloc fill helping to..
Why isn't sizeof for a struct equal to the sum of sizeof of each member? http://stackoverflow.com/questions/119123/why-isnt-sizeof-for-a-struct-equal-to-the-sum-of-sizeof-of-each-member share improve this question This is because of structure alignment. Structure alignment refers to the ability of the compiler to.. This is because of structure alignment. Structure alignment refers to the ability of the compiler to insert unused memory.. NOTE Both the C and C standards state that structure alignment is implementation defined. Therefore each compiler may choose..
Variable length arrays in C++? http://stackoverflow.com/questions/1887097/variable-length-arrays-in-c making it use ones own stack allocator isn't exactly easy alignment is an issue too . It also doesn't solve the same problem because..
Should I use static_cast or reinterpret_cast when casting a void* to whatever http://stackoverflow.com/questions/310451/should-i-use-static-cast-or-reinterpret-cast-when-casting-a-void-to-whatever to T2 where T1 and T2 are object types and where the alignment requirements of T2 are no stricter than those of T1 and back..
When and why will an OS initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete? http://stackoverflow.com/questions/370195/when-and-why-will-an-os-initialise-memory-to-0xcd-0xdd-etc-on-malloc-free-new writing outside the allocation but to also detect mixing alignment specific allocation deallocation routines with the regular..
C++: What is the size of an object of an empty class? http://stackoverflow.com/questions/621616/c-what-is-the-size-of-an-object-of-an-empty-class objects will be different. And the size can be 1 because alignment doesn't matter here as there is nothing to actually look at...
http://stackoverflow.com/questions/670308/alternative-to-vectorbool course then I have to read into a my_bool due to possible alignment issues struct my_bool bool the_bool vector my_bool haha_i_tricked_you..
Why would one replace default new and delete operators? http://stackoverflow.com/questions/7149461/why-would-one-replace-default-new-and-delete-operators new and delete . To compensate for suboptimal memory alignment in new Many computer architectures require that data of particular.. that ship with some compilers don't guarantee eight byte alignment for dynamic allocations of doubles. In such cases replacing.. default operator new with one that guarantees eight byte alignment could yield big increases in program performance can be a good..
Why is one loop so much slower than two loops? http://stackoverflow.com/questions/8547778/why-is-one-loop-so-much-slower-than-two-loops this I believe this is at least partially caused by data alignment of the four pointers. This will cause some level of cache bank.. separately. You'll notice that they all have the same alignment relative to the page. In the second two tests the arrays are.. two tests the arrays are packed together to break that alignment. Here you'll notice both loops are faster. Furthermore the second..
C/C++: Force Bit Field Order and Alignment http://stackoverflow.com/questions/1490092/c-c-force-bit-field-order-and-alignment C Force Bit Field Order and Alignment I read that the order of bit fields within a struct is platform..
http://stackoverflow.com/questions/1604968/what-does-this-c-code-mean fields within a class object is implementation defined. Alignment of bit fields is implementation defined. Bit fields are packed..
Why one should not hide a structure implementation that way? http://stackoverflow.com/questions/17619015/why-one-should-not-hide-a-structure-implementation-that-way this trick c c share improve this question Beware of Alignment public_t native alignment is 1 since char are aligned to 1 byte...
struct sizeof result not expected http://stackoverflow.com/questions/1913842/struct-sizeof-result-not-expected DDK. c struct sizeof share improve this question Alignment. use #pragma pack 1 ...struct goes here... #pragma pack I would..
operator new overloading and alignment http://stackoverflow.com/questions/2366879/operator-new-overloading-and-alignment provides operators for any alignment 4 bytes template int Alignment struct DeAllocator template int Alignment struct DeAllocator.. template int Alignment struct DeAllocator template int Alignment struct DeAllocator virtual DeAllocator Alignment 2 void operator.. int Alignment struct DeAllocator virtual DeAllocator Alignment 2 void operator new size_t s throw std bad_alloc std cerr alignment..
What exactly is an 'aligned pointer'? http://stackoverflow.com/questions/4322926/what-exactly-is-an-aligned-pointer addresses that are evenly divisble by the object's size. Alignment is somestimes very important since many hardware related things..
C++11 features in Visual Studio 2012 http://stackoverflow.com/questions/7421825/c11-features-in-visual-studio-2012 in developer preview Improved but still incomplete Alignment completed strongly typed enums forward declared enums Standard..
Why is one loop so much slower than two loops? http://stackoverflow.com/questions/8547778/why-is-one-loop-so-much-slower-than-two-loops overhead. I'm not sure exactly what's going on here... Alignment could still play an effect as Agner Fog mentions cache bank..
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