src/libcompiler_builtins/compiler-rt/test/esan/TestCases/workingset-midreport.cpp

   1 // RUN: %clang_esan_wset -O0 %s -o %t 2>&1
   2 // RUN: %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-ESAN
   3
   4 // RUN: %clang -O0 %s -o %t 2>&1
   5 // RUN: %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-NO-ESAN
   6
   7 // FIXME: Re-enable once PR33590 is fixed.
   8 // UNSUPPORTED: x86_64
   9
  10 #include <sanitizer/esan_interface.h>
  11 #include <sched.h>
  12 #include <stdio.h>
  13 #include <stdlib.h>
  14 #include <string.h>
  15 #include <sys/mman.h>
  16
  17 const int size = 0x1 << 25; // 523288 cache lines
  18 const int iters = 6;
  19
  20 int main(int argc, char **argv) {
  21   char *buf = (char *)mmap(0, size, PROT_READ | PROT_WRITE,
  22                            MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
  23   // To avoid flakiness stemming from whether the sideline thread
  24   // is scheduled enough on a loaded test machine, we coordinate
  25   // with esan itself:
  26   if (__esan_get_sample_count) {
  27     while (__esan_get_sample_count() < 4) {
  28       for (int i = 0; i < size; ++i)
  29         buf[i] = i;
  30       sched_yield();
  31     }
  32   }
  33   // Ensure a non-esan build works without ifdefs:
  34   if (__esan_report) {
  35     // We should get 2 roughly identical reports:
  36     __esan_report();
  37   }
  38   munmap(buf, size);
  39   fprintf(stderr, "all done\n");
  40   // CHECK-NO-ESAN:   all done
  41   // We only check for a few samples here to reduce the chance of flakiness:
  42   // CHECK-ESAN:      =={{[0-9]+}}== Total number of samples: {{[0-9]+}}
  43   // CHECK-ESAN-NEXT: =={{[0-9]+}}== Samples array #0 at period 20 ms
  44   // CHECK-ESAN-NEXT: =={{[0-9]+}}==#   0: {{[ 0-9]+}} {{KB|MB|Bytes}} ({{[ 0-9]+}} cache lines)
  45   // CHECK-ESAN-NEXT: =={{[0-9]+}}==#   1: {{[ 0-9]+}} {{KB|MB|Bytes}} ({{[ 0-9]+}} cache lines)
  46   // CHECK-ESAN-NEXT: =={{[0-9]+}}==#   2: {{[ 0-9]+}} {{KB|MB|Bytes}} ({{[ 0-9]+}} cache lines)
  47   // CHECK-ESAN-NEXT: =={{[0-9]+}}==#   3: {{[ 0-9]+}} {{KB|MB|Bytes}} ({{[ 0-9]+}} cache lines)
  48   // CHECK-ESAN:      =={{[0-9]+}}== Samples array #1 at period 80 ms
  49   // CHECK-ESAN-NEXT: =={{[0-9]+}}==#   0: {{[ 0-9]+}} {{KB|MB|Bytes}} ({{[ 0-9]+}} cache lines)
  50   // CHECK-ESAN:      =={{[0-9]+}}== Samples array #2 at period 320 ms
  51   // CHECK-ESAN:      =={{[0-9]+}}== Samples array #3 at period 1280 ms
  52   // CHECK-ESAN:      =={{[0-9]+}}== Samples array #4 at period 5120 ms
  53   // CHECK-ESAN:      =={{[0-9]+}}== Samples array #5 at period 20 sec
  54   // CHECK-ESAN:      =={{[0-9]+}}== Samples array #6 at period 81 sec
  55   // CHECK-ESAN:      =={{[0-9]+}}== Samples array #7 at period 327 sec
  56   // CHECK-ESAN: {{.*}} EfficiencySanitizer: the total working set size: 32 MB (5242{{[0-9][0-9]}} cache lines)
  57   // CHECK-ESAN-NEXT: all done
  58   // CHECK-ESAN-NEXT: =={{[0-9]+}}== Total number of samples: {{[0-9]+}}
  59   // CHECK-ESAN-NEXT: =={{[0-9]+}}== Samples array #0 at period 20 ms
  60   // CHECK-ESAN-NEXT: =={{[0-9]+}}==#   0: {{[ 0-9]+}} {{KB|MB|Bytes}} ({{[ 0-9]+}} cache lines)
  61   // CHECK-ESAN-NEXT: =={{[0-9]+}}==#   1: {{[ 0-9]+}} {{KB|MB|Bytes}} ({{[ 0-9]+}} cache lines)
  62   // CHECK-ESAN-NEXT: =={{[0-9]+}}==#   2: {{[ 0-9]+}} {{KB|MB|Bytes}} ({{[ 0-9]+}} cache lines)
  63   // CHECK-ESAN-NEXT: =={{[0-9]+}}==#   3: {{[ 0-9]+}} {{KB|MB|Bytes}} ({{[ 0-9]+}} cache lines)
  64   // CHECK-ESAN:      =={{[0-9]+}}== Samples array #1 at period 80 ms
  65   // CHECK-ESAN-NEXT: =={{[0-9]+}}==#   0: {{[ 0-9]+}} {{KB|MB|Bytes}} ({{[ 0-9]+}} cache lines)
  66   // CHECK-ESAN:      =={{[0-9]+}}== Samples array #2 at period 320 ms
  67   // CHECK-ESAN:      =={{[0-9]+}}== Samples array #3 at period 1280 ms
  68   // CHECK-ESAN:      =={{[0-9]+}}== Samples array #4 at period 5120 ms
  69   // CHECK-ESAN:      =={{[0-9]+}}== Samples array #5 at period 20 sec
  70   // CHECK-ESAN:      =={{[0-9]+}}== Samples array #6 at period 81 sec
  71   // CHECK-ESAN:      =={{[0-9]+}}== Samples array #7 at period 327 sec
  72   // CHECK-ESAN: {{.*}} EfficiencySanitizer: the total working set size: 32 MB (5242{{[0-9][0-9]}} cache lines)
  73   return 0;
  74 }