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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.
18 lines
632 B
C
18 lines
632 B
C
//===-- Definition of macros to be used with malloc functions -------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIBC_MACROS_MALLOC_MACROS_H
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#define LLVM_LIBC_MACROS_MALLOC_MACROS_H
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// Note: these values only make sense when Scudo is used as the memory
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// allocator.
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#define M_PURGE (-101)
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#define M_PURGE_ALL (-104)
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#endif // LLVM_LIBC_MACROS_MALLOC_MACROS_H
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