3d4bba302d
See RFC for background: http://lists.llvm.org/pipermail/llvm-dev/2020-June/142744.html Follow on companion to the clang/llvm instrumentation support in D85948 and committed earlier. This patch adds the compiler-rt runtime support for the memory profiling. Note that much of this support was cloned from asan (and then greatly simplified and renamed). For example the interactions with the sanitizer_common allocators, error handling, interception, etc. The bulk of the memory profiling specific code can be found in the MemInfoBlock, MemInfoBlockCache, and related classes defined and used in memprof_allocator.cpp. For now, the memory profile is dumped to text (stderr by default, but honors the sanitizer_common log_path flag). It is dumped in either a default verbose format, or an optional terse format. This patch also adds a set of tests for the core functionality. Differential Revision: https://reviews.llvm.org/D87120
26 lines
884 B
C++
26 lines
884 B
C++
// Check that user may include MemProf interface header.
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// Also check that interfaces declared in the sanitizer's allocator_interface
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// are defined for MemProf.
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// RUN: %clang_memprof %s -o %t -DMEMPROF && %run %t
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// RUN: %clang_memprof -x c %s -o %t -DMEMPROF && %run %t
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// RUN: %clang %s -pie -o %t && %run %t
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// RUN: %clang -x c %s -pie -o %t && %run %t
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#include <sanitizer/allocator_interface.h>
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#include <sanitizer/memprof_interface.h>
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#include <stdlib.h>
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int main() {
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int *p = (int *)malloc(10 * sizeof(int));
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#ifdef MEMPROF
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__sanitizer_get_estimated_allocated_size(8);
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__sanitizer_get_ownership(p);
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__sanitizer_get_allocated_size(p);
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__sanitizer_get_current_allocated_bytes();
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__sanitizer_get_heap_size();
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__sanitizer_get_free_bytes();
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__sanitizer_get_unmapped_bytes();
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// malloc and free hooks are tested by the malloc_hook.cpp test.
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#endif
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return 0;
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}
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