mirror of
https://github.com/oxen-io/oxen-core.git
synced 2023-12-14 02:22:56 +01:00
130 lines
3.1 KiB
C++
130 lines
3.1 KiB
C++
#include <string.h>
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#include <errno.h>
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#include <time.h>
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#include <algorithm>
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#include "common/string_util.h"
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#include "misc_log_ex.h"
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#include "timings.h"
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#define N_EXPECTED_FIELDS (8+11)
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TimingsDatabase::TimingsDatabase()
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{
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}
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TimingsDatabase::TimingsDatabase(const std::string &filename):
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filename(filename)
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{
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load();
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}
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TimingsDatabase::~TimingsDatabase()
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{
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save();
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}
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bool TimingsDatabase::load()
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{
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instances.clear();
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if (filename.empty())
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return true;
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FILE *f = fopen(filename.c_str(), "r");
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if (!f)
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{
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MDEBUG("Failed to load timings file " << filename << ": " << strerror(errno));
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return false;
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}
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while (1)
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{
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char s[4096];
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if (!fgets(s, sizeof(s), f))
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break;
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char *tab = strchr(s, '\t');
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if (!tab)
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{
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MWARNING("Bad format: no tab found");
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continue;
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}
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const std::string name = std::string(s, tab - s);
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char *ptr = tab + 1;
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auto fields_sv = tools::split(ptr, " ");
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if (fields_sv.size() != N_EXPECTED_FIELDS)
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{
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MERROR("Bad format: wrong number of fields: got " << fields_sv.size() << " expected " << N_EXPECTED_FIELDS);
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continue;
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}
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// We need C strings for the below, so make copies
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std::vector<std::string> fields;
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fields.reserve(fields_sv.size());
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for (auto& f : fields_sv) fields.emplace_back(f);
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instance i;
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unsigned int idx = 0;
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i.t = atoi(fields[idx++].c_str());
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i.npoints = atoi(fields[idx++].c_str());
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i.min = atof(fields[idx++].c_str());
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i.max = atof(fields[idx++].c_str());
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i.mean = atof(fields[idx++].c_str());
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i.median = atof(fields[idx++].c_str());
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i.stddev = atof(fields[idx++].c_str());
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i.npskew = atof(fields[idx++].c_str());
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i.deciles.reserve(11);
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for (int n = 0; n < 11; ++n)
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{
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i.deciles.push_back(atoi(fields[idx++].c_str()));
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}
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instances.insert(std::make_pair(name, i));
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}
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fclose(f);
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return true;
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}
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bool TimingsDatabase::save()
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{
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if (filename.empty())
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return true;
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FILE *f = fopen(filename.c_str(), "w");
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if (!f)
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{
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MERROR("Failed to write to file " << filename << ": " << strerror(errno));
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return false;
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}
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for (const auto &i: instances)
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{
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fprintf(f, "%s", i.first.c_str());
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fprintf(f, "\t%lu", (unsigned long)i.second.t);
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fprintf(f, " %zu", i.second.npoints);
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fprintf(f, " %f", i.second.min);
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fprintf(f, " %f", i.second.max);
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fprintf(f, " %f", i.second.mean);
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fprintf(f, " %f", i.second.median);
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fprintf(f, " %f", i.second.stddev);
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fprintf(f, " %f", i.second.npskew);
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for (double v: i.second.deciles)
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fprintf(f, " %f", v);
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fputc('\n', f);
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}
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fclose(f);
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return true;
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}
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std::vector<TimingsDatabase::instance> TimingsDatabase::get(const char *name) const
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{
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std::vector<instance> ret;
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auto range = instances.equal_range(name);
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for (auto i = range.first; i != range.second; ++i)
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ret.push_back(i->second);
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std::sort(ret.begin(), ret.end(), [](const instance &e0, const instance &e1){ return e0.t < e1.t; });
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return ret;
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}
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void TimingsDatabase::add(const char *name, const instance &i)
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{
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instances.insert(std::make_pair(name, i));
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}
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