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Accessing the PLT entries of hooks can lead a certain amount of performance overhead. This is observed on certain tasks which will do a bunch of malloc/free and their throughputs are impacted by the null check of hooks. Also add SCUDO_ENABLE_HOOKS_TESTS to select if we want to run the hook tests. On some platforms they may have different ways to run the wrappers tests (end-to-end tests) and test the hooks along with the wrappers tests may not be feasible. Provide an option to turn it ON/OFF. By default, we only verify the hook behavior in the scudo standalone tests if SCUDO_ENABLE_HOOKS is defined or COMPILER_RT_DEBUG is true. Reviewed By: cferris, fabio-d Differential Revision: https://reviews.llvm.org/D158784
41 lines
1.3 KiB
C++
41 lines
1.3 KiB
C++
//===-- wrappers_c.cpp ------------------------------------------*- C++ -*-===//
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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 "internal_defs.h"
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#include "platform.h"
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#include "scudo/interface.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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#define SCUDO_PREFIX(name) name
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#define SCUDO_ALLOCATOR Allocator
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// Export 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_REQUIRE_CONSTANT_INITIALIZATION
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scudo::Allocator<scudo::Config, SCUDO_PREFIX(malloc_postinit)> SCUDO_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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extern "C" INTERFACE void __scudo_print_stats(void) { Allocator.printStats(); }
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#endif // !SCUDO_ANDROID || !_BIONIC
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