2396c46999
This patch adds the malloc.h header, declaring Scudo's mallopt entrypoint when built LLVM_LIBC_INCLUDE_SCUDO, as well as two constants that can be passed to it (M_PURGE and M_PURGE_ALL). Due to limitations of the current build system, only the declaration of mallopt is gated by LLVM_LIBC_INCLUDE_SCUDO, and the two new constants are defined irrespectively of it. We may need to refine this in the future. Note that some allocators other than Scudo may offer a mallopt implementation too (e.g. man 3 mallopt), albeit with different supported input values. This patch only supports the specific case of LLVM_LIBC_INCLUDE_SCUDO.
LLVM libc ========= This directory and its subdirectories contain source code for llvm-libc, a retargetable implementation of the C standard library. LLVM is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt.