2019-08-01 14:36:38 +00:00
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//===-- wrappers_c.cpp ------------------------------------------*- C++ -*-===//
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[scudo][standalone] Introduce the C & C++ wrappers [fixed]
Summary:
This is a redo of D63612.
Two problems came up on some bots:
- `__builtin_umull_overflow` was not declared. This is likely due to an
older clang or gcc, so add a guard with `__has_builtin` and fallback
to a division in the event the builtin doesn't exist;
- contradicting definition for `malloc`, etc. This is AFAIU due to the
fact that we ended up transitively including `stdlib.h` in the `.inc`
due to it being the flags parser header: so move the include to the
cc instead.
This should fix the issues, but since those didn't come up in my local
tests it's mostly guesswork.
Rest is the same!
Reviewers: morehouse, hctim, eugenis, vitalybuka, dyung, hans
Reviewed By: morehouse, dyung, hans
Subscribers: srhines, mgorny, delcypher, jfb, #sanitizers, llvm-commits
Tags: #llvm, #sanitizers
Differential Revision: https://reviews.llvm.org/D63831
llvm-svn: 364547
2019-06-27 14:23:26 +00:00
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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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#include "platform.h"
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// Skip this compilation unit if compiled as part of Bionic.
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#if !SCUDO_ANDROID || !_BIONIC
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#include "allocator_config.h"
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#include "wrappers_c.h"
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#include "wrappers_c_checks.h"
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#include <stdint.h>
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#include <stdio.h>
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static scudo::Allocator<scudo::Config> Allocator;
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// Pointer to the static allocator so that the C++ wrappers can access it.
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// Technically we could have a completely separated heap for C & C++ but in
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// reality the amount of cross pollination between the two is staggering.
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scudo::Allocator<scudo::Config> *AllocatorPtr = &Allocator;
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extern "C" {
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#define SCUDO_PREFIX(name) name
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#define SCUDO_ALLOCATOR Allocator
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#include "wrappers_c.inc"
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#undef SCUDO_ALLOCATOR
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#undef SCUDO_PREFIX
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INTERFACE void __scudo_print_stats(void) { Allocator.printStats(); }
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} // extern "C"
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#endif // !SCUDO_ANDROID || !_BIONIC
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