| // RUN: %clang_esan_wset -O0 %s -o %t 2>&1 |
| // RUN: %run %t 2>&1 | FileCheck %s |
| |
| // FIXME: Re-enable once PR33590 is fixed. |
| // UNSUPPORTED: x86_64 |
| |
| #include <sanitizer/esan_interface.h> |
| #include <sched.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/mman.h> |
| |
| const int size = 0x1 << 25; // 523288 cache lines |
| |
| int main(int argc, char **argv) { |
| char *buf = (char *)mmap(0, size, PROT_READ | PROT_WRITE, |
| MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); |
| // To avoid flakiness stemming from whether the sideline thread |
| // is scheduled enough on a loaded test machine, we coordinate |
| // with esan itself: |
| if (__esan_get_sample_count) { |
| while (__esan_get_sample_count() < 4) { |
| for (int i = 0; i < size; ++i) |
| buf[i] = i; |
| sched_yield(); |
| } |
| } |
| munmap(buf, size); |
| // We only check for a few samples here to reduce the chance of flakiness. |
| // CHECK: =={{[0-9]+}}== Total number of samples: {{[0-9]+}} |
| // CHECK-NEXT: =={{[0-9]+}}== Samples array #0 at period 20 ms |
| // CHECK-NEXT: =={{[0-9]+}}==# 0: {{[ 0-9]+}} {{KB|MB|Bytes}} ({{[ 0-9]+}} cache lines) |
| // CHECK-NEXT: =={{[0-9]+}}==# 1: {{[ 0-9]+}} {{KB|MB|Bytes}} ({{[ 0-9]+}} cache lines) |
| // CHECK-NEXT: =={{[0-9]+}}==# 2: {{[ 0-9]+}} {{KB|MB|Bytes}} ({{[ 0-9]+}} cache lines) |
| // CHECK-NEXT: =={{[0-9]+}}==# 3: {{[ 0-9]+}} {{KB|MB|Bytes}} ({{[ 0-9]+}} cache lines) |
| // CHECK: =={{[0-9]+}}== Samples array #1 at period 80 ms |
| // CHECK-NEXT: =={{[0-9]+}}==# 0: {{[ 0-9]+}} {{KB|MB|Bytes}} ({{[ 0-9]+}} cache lines) |
| // CHECK: =={{[0-9]+}}== Samples array #2 at period 320 ms |
| // CHECK: =={{[0-9]+}}== Samples array #3 at period 1280 ms |
| // CHECK: =={{[0-9]+}}== Samples array #4 at period 5120 ms |
| // CHECK: =={{[0-9]+}}== Samples array #5 at period 20 sec |
| // CHECK: =={{[0-9]+}}== Samples array #6 at period 81 sec |
| // CHECK: =={{[0-9]+}}== Samples array #7 at period 327 sec |
| // CHECK: {{.*}} EfficiencySanitizer: the total working set size: 32 MB (5242{{[0-9][0-9]}} cache lines) |
| return 0; |
| } |
