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[ Source: libmmap-allocator  ]

Package: libmmap-allocator-dev (0.4.0+git20200122.adbfbe1-1)

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STL allocator that mmaps files

When reading large files (>100MB) into memory, read() calls are usually not very space and time efficient, since the whole data is copiied at least once. Furthermore, when using STL containers (like a vector for example), data is copiied another time unless the location of the vector content as parameter to read() will be specified.

It would be nice to tell the vector a filename and have the vector mmap the file directly. This not only avoids the read() copiing (and the STL vector copiing) but also allows different processes that read the same file to see the same physical memory. Fortunately STL foresees an interface to do exactly this.

Libmmap-allocator helps to handle big files that contain unstructured data (like doubles or even text files), mmap_allocator is worth a try.

Tags: Software Development: Libraries, Role: Development Library

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Architecture Package Size Installed Size Files
amd64 18.3 kB86.0 kB [list of files]
arm64 18.0 kB84.0 kB [list of files]
armel 18.1 kB80.0 kB [list of files]
armhf 17.8 kB78.0 kB [list of files]
hppa (unofficial port) 18.3 kB79.0 kB [list of files]
i386 18.8 kB80.0 kB [list of files]
m68k (unofficial port) 17.9 kB78.0 kB [list of files]
mips64el 18.9 kB91.0 kB [list of files]
mipsel 19.1 kB81.0 kB [list of files]
riscv64 (unofficial port) 25.1 kB160.0 kB [list of files]
s390x 17.8 kB84.0 kB [list of files]
sh4 (unofficial port) 18.6 kB78.0 kB [list of files]
x32 (unofficial port) 18.3 kB79.0 kB [list of files]