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
21 lines
753 B
C++
21 lines
753 B
C++
// Check atexit option.
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// RUN: %clangxx_memprof -O0 %s -o %t
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// RUN: %env_memprof_opts=atexit=1 %run %t 2>&1 | FileCheck %s
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// RUN: %env_memprof_opts=atexit=0 %run %t 2>&1 | FileCheck %s --check-prefix=NOATEXIT
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// CHECK: MemProfiler exit stats:
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// CHECK: Stats: {{[0-9]+}}M malloced ({{[0-9]+}}M for overhead) by {{[0-9]+}} calls
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// CHECK: Stats: {{[0-9]+}}M realloced by {{[0-9]+}} calls
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// CHECK: Stats: {{[0-9]+}}M freed by {{[0-9]+}} calls
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// CHECK: Stats: {{[0-9]+}}M really freed by {{[0-9]+}} calls
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// CHECK: Stats: {{[0-9]+}}M ({{[0-9]+}}M-{{[0-9]+}}M) mmaped; {{[0-9]+}} maps, {{[0-9]+}} unmaps
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// CHECK: mallocs by size class:
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// CHECK: Stats: malloc large: {{[0-9]+}}
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// NOATEXIT-NOT: MemProfiler exit stats
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int main() {
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return 0;
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}
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