1    	#include <algorithm>
2    	#include <cmath>
3    	#include <iostream>
4    	#include <string>
5    	#include <numeric>
6    	#include <regex>
7    	#include <system_error>
8    	
9    	#include <boost/process.hpp>
10   	#include <boost/tokenizer.hpp>
11   	
12   	namespace bp = boost::process;
13   	using namespace std;
14   	
(1) Event root_function: In function "main(int, char **)" an exception of type "boost::process::process_error" is thrown and never caught.
Also see events: [fun_call_w_exception]
15   	int main(int argc, char** argv)
16   	{
17   	  cout << "Mon Memory Target Test" << endl;
18   	
19   	  if (argc != 2) {
20   	    cout << "Syntax: "
21   	         << "ceph_test_mon_memory_target <mon-memory-target-bytes>"
22   	         << endl;
23   	    exit(EINVAL);
24   	  }
25   	
26   	  string target_directory("/var/log/ceph/");
27   	  unsigned long maxallowed = stoul(argv[1], nullptr, 10);
28   	  regex reg(R"(cache_size:(\d*)\s)");
29   	
30   	  string grep_command("grep _set_new_cache_sizes " + target_directory
31   	                      + "ceph-mon.a.log");
(2) Event fun_call_w_exception: Called function throws an exception of type "boost::process::process_error". [details]
Also see events: [root_function]
32   	  bp::ipstream is;
33   	  error_code ec;
34   	  bp::child grep(grep_command, bp::std_out > is, ec);
35   	  if (ec) {
36   	    cout << "Error grepping logs! Exiting" << endl;
37   	    cout << "Error: " << ec.value() << " " << ec.message() << endl;
38   	    exit(ec.value());
39   	  }
40   	
41   	  string line;
42   	  vector<unsigned long> results;
43   	  while (grep.running() && getline(is, line) && !line.empty()) {
44   	    smatch match;
45   	    if (regex_search(line, match, reg)) {
46   	      results.push_back(stoul(match[1].str()));
47   	    }
48   	  }
49   	
50   	  if (results.empty()) {
51   	    cout << "Error: No grep results found!" << endl;
52   	    exit(ENOENT);
53   	  }
54   	
55   	  auto maxe = *(max_element(results.begin(), results.end()));
56   	  cout << "Results for mon_memory_target:" << endl;
57   	  cout << "Max: " << maxe << endl;
58   	  cout << "Min: " << *(min_element(results.begin(), results.end())) << endl;
59   	  auto sum = accumulate(results.begin(), results.end(),
60   	                        static_cast<unsigned long long>(0));
61   	  auto mean = sum / results.size();
62   	  cout << "Mean average: " << mean << endl;
63   	  vector<unsigned long> diff(results.size());
64   	  transform(results.begin(), results.end(), diff.begin(),
65   	            [mean](unsigned long x) { return x - mean; });
66   	  auto sump = inner_product(diff.begin(), diff.end(), diff.begin(), 0.0);
67   	  auto stdev = sqrt(sump / results.size());
68   	  cout << "Standard deviation: " << stdev << endl;
69   	
70   	  if (maxe > maxallowed) {
71   	    cout << "Error: Mon memory consumption exceeds maximum allowed!" << endl;
72   	    exit(ENOMEM);
73   	  }
74   	
75   	  grep.wait();
76   	
77   	  cout << "Completed successfully" << endl;
78   	  return 0;
79   	}
80