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29
30// ---
31// Author: Craig Silverstein
32//
33// This tests ReadStackTraces and ReadGrowthStackTraces.  It does this
34// by doing a bunch of allocations and then calling those functions.
35// A driver shell-script can call this, and then call pprof, and
36// verify the expected output.  The output is written to
37// argv[1].heap and argv[1].growth
38
39#include "config_for_unittests.h"
40#include <stdio.h>
41#include <stdlib.h>
42#include <string>
43#include "base/logging.h"
44#include <gperftools/malloc_extension.h>
45
46using std::string;
47
48extern "C" void* AllocateAllocate() ATTRIBUTE_NOINLINE;
49
50extern "C" void* AllocateAllocate() {
51  // The VLOG's are mostly to discourage inlining
52  VLOG(1, "Allocating some more");
53  void* p = malloc(10000);
54  VLOG(1, "Done allocating");
55  return p;
56}
57
58static void WriteStringToFile(const string& s, const string& filename) {
59  FILE* fp = fopen(filename.c_str(), "w");
60  fwrite(s.data(), 1, s.length(), fp);
61  fclose(fp);
62}
63
64int main(int argc, char** argv) {
65  if (argc < 2) {
66    fprintf(stderr, "USAGE: %s <base of output files>\n", argv[0]);
67    exit(1);
68  }
69  for (int i = 0; i < 8000; i++) {
70    AllocateAllocate();
71  }
72
73  string s;
74  MallocExtension::instance()->GetHeapSample(&s);
75  WriteStringToFile(s, string(argv[1]) + ".heap");
76
77  s.clear();
78  MallocExtension::instance()->GetHeapGrowthStacks(&s);
79  WriteStringToFile(s, string(argv[1]) + ".growth");
80
81  return 0;
82}
83