56 lines · cpp
1// Tests ASAN_OPTIONS=allocator_release_to_os=12 3// RUN: %clangxx_asan -std=c++11 %s -o %t4// RUN: %env_asan_opts=allocator_release_to_os_interval_ms=0 %run %t 2>&1 | FileCheck %s --check-prefix=RELEASE5// RUN: %env_asan_opts=allocator_release_to_os_interval_ms=-1 %run %t 2>&1 | FileCheck %s --check-prefix=NO_RELEASE6// RUN: %env_asan_opts=allocator_release_to_os_interval_ms=-1 %run %t force 2>&1 | FileCheck %s --check-prefix=FORCE_RELEASE7 8// REQUIRES: x86_64-target-arch9// REQUIRES: page-size-409610 11#include <algorithm>12#include <assert.h>13#include <random>14#include <stdint.h>15#include <stdio.h>16#include <stdlib.h>17#include <string.h>18 19#include <sanitizer/allocator_interface.h>20#include <sanitizer/asan_interface.h>21 22void MallocReleaseStress() {23 const size_t kNumChunks = 10000;24 const size_t kAllocSize = 100;25 const size_t kNumIter = 100;26 uintptr_t *chunks[kNumChunks] = {0};27 std::mt19937 r;28 29 for (size_t iter = 0; iter < kNumIter; iter++) {30 std::shuffle(chunks, chunks + kNumChunks, r);31 size_t to_replace = rand() % kNumChunks;32 for (size_t i = 0; i < kNumChunks; i++) {33 if (chunks[i])34 assert(chunks[i][0] == (uintptr_t)chunks[i]);35 if (i < to_replace) {36 delete [] chunks[i];37 chunks[i] = new uintptr_t[kAllocSize];38 chunks[i][0] = (uintptr_t)chunks[i];39 }40 }41 }42 for (auto p : chunks)43 delete[] p;44}45 46int main(int argc, char **argv) {47 MallocReleaseStress();48 if (argc > 1 && !strcmp("force", argv[1]))49 __sanitizer_purge_allocator();50 __asan_print_accumulated_stats();51}52 53// RELEASE: mapped:{{.*}}releases: {{[1-9]}}54// NO_RELEASE: mapped:{{.*}}releases: 055// FORCE_RELEASE: mapped:{{.*}}releases: {{[1-9]}}56