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72 lines
3.7 KiB
72 lines
3.7 KiB
// RUN: %clang_esan_wset -O0 %s -o %t 2>&1
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// RUN: %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-ESAN
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// RUN: %clang -O0 %s -o %t 2>&1
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// RUN: %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ESAN
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#include <sanitizer/esan_interface.h>
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#include <sched.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 <sys/mman.h>
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const int size = 0x1 << 25; // 523288 cache lines
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const int iters = 6;
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int main(int argc, char **argv) {
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char *buf = (char *)mmap(0, size, PROT_READ | PROT_WRITE,
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MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
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// Try to increase the probability that the sideline thread is
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// scheduled. Unfortunately we can't do proper synchronization
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// without some form of annotation or something.
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sched_yield();
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// Do enough work to get at least 4 samples.
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for (int j = 0; j < iters; ++j) {
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for (int i = 0; i < size; ++i)
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buf[i] = i;
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sched_yield();
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}
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// Ensure a non-esan build works without ifdefs:
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if (__esan_report) {
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// We should get 2 roughly identical reports:
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__esan_report();
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}
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munmap(buf, size);
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fprintf(stderr, "all done\n");
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// CHECK-NO-ESAN: all done
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// We only check for a few samples here to reduce the chance of flakiness:
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// CHECK-ESAN: =={{[0-9]+}}== Total number of samples: {{[0-9]+}}
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// CHECK-ESAN-NEXT: =={{[0-9]+}}== Samples array #0 at period 20 ms
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// CHECK-ESAN-NEXT: =={{[0-9]+}}==# 0: {{[ 0-9]+}} {{KB|MB|Bytes}} ({{[ 0-9]+}} cache lines)
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// CHECK-ESAN-NEXT: =={{[0-9]+}}==# 1: {{[ 0-9]+}} {{KB|MB|Bytes}} ({{[ 0-9]+}} cache lines)
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// CHECK-ESAN-NEXT: =={{[0-9]+}}==# 2: {{[ 0-9]+}} {{KB|MB|Bytes}} ({{[ 0-9]+}} cache lines)
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// CHECK-ESAN-NEXT: =={{[0-9]+}}==# 3: {{[ 0-9]+}} {{KB|MB|Bytes}} ({{[ 0-9]+}} cache lines)
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// CHECK-ESAN: =={{[0-9]+}}== Samples array #1 at period 80 ms
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// CHECK-ESAN-NEXT: =={{[0-9]+}}==# 0: {{[ 0-9]+}} {{KB|MB|Bytes}} ({{[ 0-9]+}} cache lines)
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// CHECK-ESAN: =={{[0-9]+}}== Samples array #2 at period 320 ms
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// CHECK-ESAN: =={{[0-9]+}}== Samples array #3 at period 1280 ms
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// CHECK-ESAN: =={{[0-9]+}}== Samples array #4 at period 5120 ms
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// CHECK-ESAN: =={{[0-9]+}}== Samples array #5 at period 20 sec
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// CHECK-ESAN: =={{[0-9]+}}== Samples array #6 at period 81 sec
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// CHECK-ESAN: =={{[0-9]+}}== Samples array #7 at period 327 sec
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// CHECK-ESAN: {{.*}} EfficiencySanitizer: the total working set size: 32 MB (5242{{[0-9][0-9]}} cache lines)
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// CHECK-ESAN-NEXT: all done
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// CHECK-ESAN-NEXT: =={{[0-9]+}}== Total number of samples: {{[0-9]+}}
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// CHECK-ESAN-NEXT: =={{[0-9]+}}== Samples array #0 at period 20 ms
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// CHECK-ESAN-NEXT: =={{[0-9]+}}==# 0: {{[ 0-9]+}} {{KB|MB|Bytes}} ({{[ 0-9]+}} cache lines)
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// CHECK-ESAN-NEXT: =={{[0-9]+}}==# 1: {{[ 0-9]+}} {{KB|MB|Bytes}} ({{[ 0-9]+}} cache lines)
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// CHECK-ESAN-NEXT: =={{[0-9]+}}==# 2: {{[ 0-9]+}} {{KB|MB|Bytes}} ({{[ 0-9]+}} cache lines)
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// CHECK-ESAN-NEXT: =={{[0-9]+}}==# 3: {{[ 0-9]+}} {{KB|MB|Bytes}} ({{[ 0-9]+}} cache lines)
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// CHECK-ESAN: =={{[0-9]+}}== Samples array #1 at period 80 ms
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// CHECK-ESAN-NEXT: =={{[0-9]+}}==# 0: {{[ 0-9]+}} {{KB|MB|Bytes}} ({{[ 0-9]+}} cache lines)
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// CHECK-ESAN: =={{[0-9]+}}== Samples array #2 at period 320 ms
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// CHECK-ESAN: =={{[0-9]+}}== Samples array #3 at period 1280 ms
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// CHECK-ESAN: =={{[0-9]+}}== Samples array #4 at period 5120 ms
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// CHECK-ESAN: =={{[0-9]+}}== Samples array #5 at period 20 sec
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// CHECK-ESAN: =={{[0-9]+}}== Samples array #6 at period 81 sec
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// CHECK-ESAN: =={{[0-9]+}}== Samples array #7 at period 327 sec
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// CHECK-ESAN: {{.*}} EfficiencySanitizer: the total working set size: 32 MB (5242{{[0-9][0-9]}} cache lines)
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return 0;
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}
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