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Do not enforce minimum alignment in memalign(). This is a non-standard function, and there is disagreement over whether to enforce minimum alignment. Solaris documentation (whence memalign() originated) says that minimum alignment is required: The value of alignment must be a power of two and must be greater than or equal to the size of a word. However, Linux's manual page says in its NOTES section: memalign() may not check that the boundary parameter is correct. This is descriptive rather than prescriptive, but applications with bad assumptions about memalign() exist, so be as forgiving as possible. Reported by Mike Hommey.
jemalloc is a general-purpose scalable concurrent malloc(3) implementation. This distribution is a stand-alone "portable" implementation that currently targets Linux and Apple OS X. jemalloc is included as the default allocator in the FreeBSD and NetBSD operating systems, and it is used by the Mozilla Firefox web browser on Microsoft Windows-related platforms. Depending on your needs, one of the other divergent versions may suit your needs better than this distribution. The COPYING file contains copyright and licensing information. The INSTALL file contains information on how to configure, build, and install jemalloc. The ChangeLog file contains a brief summary of changes for each release. URL: http://www.canonware.com/jemalloc/