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
35 lines
1020 B
C++
35 lines
1020 B
C++
// The for loop in the backticks below requires bash.
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// REQUIRES: shell
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//
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// RUN: %clangxx_memprof %s -o %t
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// Regular run.
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// RUN: %run %t 2> %t.out
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// RUN: FileCheck %s --check-prefix=CHECK-GOOD < %t.out
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// Good log_path.
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// RUN: rm -f %t.log.*
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// RUN: %env_memprof_opts=log_path=%t.log %run %t 2> %t.out
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// RUN: FileCheck %s --check-prefix=CHECK-GOOD < %t.log.*
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// Invalid log_path.
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// RUN: %env_memprof_opts=log_path=/dev/null/INVALID not %run %t 2> %t.out
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// RUN: FileCheck %s --check-prefix=CHECK-INVALID < %t.out
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// Too long log_path.
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// RUN: %env_memprof_opts=log_path=`for((i=0;i<10000;i++)); do echo -n $i; done` \
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// RUN: not %run %t 2> %t.out
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// RUN: FileCheck %s --check-prefix=CHECK-LONG < %t.out
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#include <stdlib.h>
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#include <string.h>
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int main(int argc, char **argv) {
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char *x = (char *)malloc(10);
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memset(x, 0, 10);
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free(x);
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return 0;
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}
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// CHECK-GOOD: Memory allocation stack id
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// CHECK-INVALID: ERROR: Can't open file: /dev/null/INVALID
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// CHECK-LONG: ERROR: Path is too long: 01234
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