56 lines
1.7 KiB
C++
56 lines
1.7 KiB
C++
// Tests ASAN_OPTIONS=allocator_release_to_os=1
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// RUN: %clangxx_asan -std=c++11 %s -o %t
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// RUN: %env_asan_opts=allocator_release_to_os_interval_ms=0 %run %t 2>&1 | FileCheck %s --check-prefix=RELEASE
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// RUN: %env_asan_opts=allocator_release_to_os_interval_ms=-1 %run %t 2>&1 | FileCheck %s --check-prefix=NO_RELEASE
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// RUN: %env_asan_opts=allocator_release_to_os_interval_ms=-1 %run %t force 2>&1 | FileCheck %s --check-prefix=FORCE_RELEASE
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// REQUIRES: x86_64-target-arch
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// REQUIRES: page-size-4096
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#include <algorithm>
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#include <assert.h>
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#include <random>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sanitizer/allocator_interface.h>
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#include <sanitizer/asan_interface.h>
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void MallocReleaseStress() {
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const size_t kNumChunks = 10000;
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const size_t kAllocSize = 100;
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const size_t kNumIter = 100;
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uintptr_t *chunks[kNumChunks] = {0};
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std::mt19937 r;
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for (size_t iter = 0; iter < kNumIter; iter++) {
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std::shuffle(chunks, chunks + kNumChunks, r);
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size_t to_replace = rand() % kNumChunks;
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for (size_t i = 0; i < kNumChunks; i++) {
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if (chunks[i])
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assert(chunks[i][0] == (uintptr_t)chunks[i]);
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if (i < to_replace) {
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delete [] chunks[i];
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chunks[i] = new uintptr_t[kAllocSize];
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chunks[i][0] = (uintptr_t)chunks[i];
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}
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}
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}
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for (auto p : chunks)
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delete[] p;
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}
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int main(int argc, char **argv) {
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MallocReleaseStress();
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if (argc > 1 && !strcmp("force", argv[1]))
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__sanitizer_purge_allocator();
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__asan_print_accumulated_stats();
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}
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// RELEASE: mapped:{{.*}}releases: {{[1-9]}}
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// NO_RELEASE: mapped:{{.*}}releases: 0
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// FORCE_RELEASE: mapped:{{.*}}releases: {{[1-9]}}
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