c++ Programming Glossary: page_size

http://stackoverflow.com/questions/2513505/how-to-get-available-memory-c-g

long pages sysconf _SC_PHYS_PAGES long page_size sysconf _SC_PAGE_SIZE return pages page_size On Windows there.. long page_size sysconf _SC_PAGE_SIZE return pages page_size On Windows there is GlobalMemoryStatusEx #include windows.h..

Does declaring C++ variables const help or hurt performance?

http://stackoverflow.com/questions/3867001/does-declaring-c-variables-const-help-or-hurt-performance

like const qreal padding CalculatePadding const QSizeF page_size CalculatePagePreviewSize padding const QRectF content_rect CalculatePagePreviewContentRect.. const QRectF content_rect CalculatePagePreviewContentRect page_size const QList QRectF pages renderer.BuildPrintPages printer_ map_scene_..

mmap() vs. reading blocks

http://stackoverflow.com/questions/45972/mmap-vs-reading-blocks

with data versus const int file_size something const int page_size 0x1000 int off 0 void data int fd open filename.bin O_RDONLY.. filename.bin O_RDONLY while off file_size data mmap NULL page_size PROT_READ 0 fd off do stuff with data munmap data page_size.. PROT_READ 0 fd off do stuff with data munmap data page_size off page_size Clearly I'm leaving out details like how to determine..