--- /dev/null
+/* Copyright (c) 2004-2019. The SimGrid Team. All rights reserved. */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
+#include "xbt/log.h"
+#include "xbt/sysdep.h"
+
+#include "src/kernel/resource/profile/trace_mgr.hpp"
+#include "src/surf/surf_interface.hpp"
+#include <boost/algorithm/string.hpp>
+#include <boost/algorithm/string/join.hpp>
+#include <boost/algorithm/string/split.hpp>
+#include <cmath>
+#include <fstream>
+#include <sstream>
+#include <unordered_map>
+
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_trace, surf, "Surf trace management");
+
+static std::unordered_map<std::string, simgrid::kernel::profile::Profile*> trace_list;
+
+static inline bool doubleEq(double d1, double d2)
+{
+ return fabs(d1 - d2) < 0.0001;
+}
+namespace simgrid {
+namespace kernel {
+namespace profile {
+
+bool DatedValue::operator==(DatedValue const& e2) const
+{
+ return (doubleEq(date_, e2.date_)) && (doubleEq(value_, e2.value_));
+}
+std::ostream& operator<<(std::ostream& out, const DatedValue& e)
+{
+ out << e.date_ << " " << e.value_;
+ return out;
+}
+
+Profile::Profile()
+{
+ /* Add the first fake event storing the time at which the trace begins */
+ DatedValue val(0, -1);
+ event_list.push_back(val);
+}
+Profile::~Profile() = default;
+FutureEvtSet::FutureEvtSet() = default;
+FutureEvtSet::~FutureEvtSet()
+{
+ while (not heap_.empty()) {
+ delete heap_.top().second;
+ heap_.pop();
+ }
+}
+} // namespace profile
+} // namespace kernel
+} // namespace simgrid
+
+simgrid::kernel::profile::Profile* tmgr_trace_new_from_string(std::string name, std::string input, double periodicity)
+{
+ int linecount = 0;
+ simgrid::kernel::profile::Profile* trace = new simgrid::kernel::profile::Profile();
+ simgrid::kernel::profile::DatedValue* last_event = &(trace->event_list.back());
+
+ xbt_assert(trace_list.find(name) == trace_list.end(), "Refusing to define trace %s twice", name.c_str());
+
+ std::vector<std::string> list;
+ boost::split(list, input, boost::is_any_of("\n\r"));
+ for (auto val : list) {
+ simgrid::kernel::profile::DatedValue event;
+ linecount++;
+ boost::trim(val);
+ if (val[0] == '#' || val[0] == '\0' || val[0] == '%') // pass comments
+ continue;
+ if (sscanf(val.c_str(), "PERIODICITY %lg\n", &periodicity) == 1)
+ continue;
+ if (sscanf(val.c_str(), "LOOPAFTER %lg\n", &periodicity) == 1)
+ continue;
+
+ xbt_assert(sscanf(val.c_str(), "%lg %lg\n", &event.date_, &event.value_) == 2, "%s:%d: Syntax error in trace\n%s",
+ name.c_str(), linecount, input.c_str());
+
+ xbt_assert(last_event->date_ <= event.date_,
+ "%s:%d: Invalid trace: Events must be sorted, but time %g > time %g.\n%s", name.c_str(), linecount,
+ last_event->date_, event.date_, input.c_str());
+ last_event->date_ = event.date_ - last_event->date_;
+
+ trace->event_list.push_back(event);
+ last_event = &(trace->event_list.back());
+ }
+ if (last_event) {
+ if (periodicity > 0) {
+ last_event->date_ = periodicity + trace->event_list.at(0).date_;
+ } else {
+ last_event->date_ = -1;
+ }
+ }
+
+ trace_list.insert({name, trace});
+
+ return trace;
+}
+
+simgrid::kernel::profile::Profile* tmgr_trace_new_from_file(std::string filename)
+{
+ xbt_assert(not filename.empty(), "Cannot parse a trace from an empty filename");
+ xbt_assert(trace_list.find(filename) == trace_list.end(), "Refusing to define trace %s twice", filename.c_str());
+
+ std::ifstream* f = surf_ifsopen(filename);
+ xbt_assert(not f->fail(), "Cannot open file '%s' (path=%s)", filename.c_str(), (boost::join(surf_path, ":")).c_str());
+
+ std::stringstream buffer;
+ buffer << f->rdbuf();
+ delete f;
+
+ return tmgr_trace_new_from_string(filename, buffer.str(), -1);
+}
+namespace simgrid {
+namespace kernel {
+namespace profile {
+
+/** @brief Registers a new trace into the future event set, and get an iterator over the integrated trace */
+Event* FutureEvtSet::add_trace(Profile* profile, resource::Resource* resource)
+{
+ Event* event = new Event();
+ event->profile = profile;
+ event->idx = 0;
+ event->resource = resource;
+ event->free_me = false;
+
+ xbt_assert((event->idx < profile->event_list.size()), "Your profile should have at least one event!");
+
+ heap_.emplace(0.0 /* start time */, event);
+
+ return event;
+}
+
+/** @brief returns the date of the next occurring event */
+double FutureEvtSet::next_date() const
+{
+ return heap_.empty() ? -1.0 : heap_.top().first;
+}
+
+/** @brief Retrieves the next occurring event, or nullptr if none happens before date */
+Event* FutureEvtSet::pop_leq(double date, double* value, resource::Resource** resource)
+{
+ double event_date = next_date();
+ if (event_date > date)
+ return nullptr;
+
+ if (heap_.empty())
+ return nullptr;
+ Event* event = heap_.top().second;
+ heap_.pop();
+
+ Profile* profile = event->profile;
+ *resource = event->resource;
+
+ DatedValue dateVal = profile->event_list.at(event->idx);
+
+ *value = dateVal.value_;
+
+ if (event->idx < profile->event_list.size() - 1) {
+ heap_.emplace(event_date + dateVal.date_, event);
+ event->idx++;
+ } else if (dateVal.date_ > 0) { /* Last element. Shall we loop? */
+ heap_.emplace(event_date + dateVal.date_, event);
+ event->idx = 1; /* idx=0 is a placeholder to store when events really start */
+ } else { /* If we don't loop, we don't need this event anymore */
+ event->free_me = true;
+ }
+
+ return event;
+}
+} // namespace profile
+} // namespace kernel
+} // namespace simgrid
+void tmgr_finalize()
+{
+ for (auto const& kv : trace_list)
+ delete kv.second;
+ trace_list.clear();
+}
+
+void tmgr_trace_event_unref(simgrid::kernel::profile::Event** event)
+{
+ if ((*event)->free_me) {
+ delete *event;
+ *event = nullptr;
+ }
+}
