1 /* Copyright (c) 2004-2019. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
7 #include "xbt/sysdep.h"
9 #include "src/kernel/resource/profile/trace_mgr.hpp"
10 #include "src/surf/surf_interface.hpp"
11 #include <boost/algorithm/string.hpp>
12 #include <boost/algorithm/string/join.hpp>
13 #include <boost/algorithm/string/split.hpp>
17 #include <unordered_map>
19 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(profile, resource, "Surf profile management");
21 static std::unordered_map<std::string, simgrid::kernel::profile::Profile*> trace_list;
27 bool DatedValue::operator==(DatedValue const& e2) const
29 return (fabs(date_ - e2.date_) < 0.0001) && (fabs(value_ - e2.value_) < 0.0001);
31 std::ostream& operator<<(std::ostream& out, const DatedValue& e)
33 out << e.date_ << " " << e.value_;
39 /* Add the first fake event storing the time at which the trace begins */
40 DatedValue val(0, -1);
41 event_list.push_back(val);
43 Profile::~Profile() = default;
45 /** @brief Register this profile for that resource onto that FES,
46 * and get an iterator over the integrated trace */
47 Event* Profile::schedule(FutureEvtSet* fes, resource::Resource* resource)
49 Event* event = new Event();
50 event->profile = this;
52 event->resource = resource;
53 event->free_me = false;
55 xbt_assert((event->idx < event_list.size()), "Your profile should have at least one event!");
58 fes_->add_event(0.0 /* start time */, event);
63 /** @brief Gets the next event from a profile */
64 DatedValue Profile::next(Event* event)
66 double event_date = fes_->next_date();
67 DatedValue dateVal = event_list.at(event->idx);
69 if (event->idx < event_list.size() - 1) {
70 fes_->add_event(event_date + dateVal.date_, event);
72 } else if (dateVal.date_ > 0) { /* Last element. Shall we loop? */
73 fes_->add_event(event_date + dateVal.date_, event);
74 event->idx = 1; /* idx=0 is a placeholder to store when events really start */
75 } else { /* If we don't loop, we don't need this event anymore */
76 event->free_me = true;
82 Profile* Profile::from_string(const std::string& name, const std::string& input, double periodicity)
85 simgrid::kernel::profile::Profile* profile = new simgrid::kernel::profile::Profile();
86 simgrid::kernel::profile::DatedValue* last_event = &(profile->event_list.back());
88 xbt_assert(trace_list.find(name) == trace_list.end(), "Refusing to define trace %s twice", name.c_str());
90 std::vector<std::string> list;
91 boost::split(list, input, boost::is_any_of("\n\r"));
92 for (auto val : list) {
93 simgrid::kernel::profile::DatedValue event;
96 if (val[0] == '#' || val[0] == '\0' || val[0] == '%') // pass comments
98 if (sscanf(val.c_str(), "PERIODICITY %lg\n", &periodicity) == 1)
100 if (sscanf(val.c_str(), "LOOPAFTER %lg\n", &periodicity) == 1)
103 XBT_ATTRIB_UNUSED int res = sscanf(val.c_str(), "%lg %lg\n", &event.date_, &event.value_);
104 xbt_assert(res == 2, "%s:%d: Syntax error in trace\n%s", name.c_str(), linecount, input.c_str());
106 xbt_assert(last_event->date_ <= event.date_,
107 "%s:%d: Invalid trace: Events must be sorted, but time %g > time %g.\n%s", name.c_str(), linecount,
108 last_event->date_, event.date_, input.c_str());
109 last_event->date_ = event.date_ - last_event->date_;
111 profile->event_list.push_back(event);
112 last_event = &(profile->event_list.back());
115 if (periodicity > 0) {
116 last_event->date_ = periodicity + profile->event_list.at(0).date_;
118 last_event->date_ = -1;
122 trace_list.insert({name, profile});
126 Profile* Profile::from_file(const std::string& path)
128 xbt_assert(not path.empty(), "Cannot parse a trace from an empty filename");
129 xbt_assert(trace_list.find(path) == trace_list.end(), "Refusing to define trace %s twice", path.c_str());
131 std::ifstream* f = surf_ifsopen(path);
132 xbt_assert(not f->fail(), "Cannot open file '%s' (path=%s)", path.c_str(), (boost::join(surf_path, ":")).c_str());
134 std::stringstream buffer;
135 buffer << f->rdbuf();
138 return Profile::from_string(path, buffer.str(), -1);
140 FutureEvtSet::FutureEvtSet() = default;
141 FutureEvtSet::~FutureEvtSet()
143 while (not heap_.empty()) {
144 delete heap_.top().second;
149 /** @brief Schedules an event to a future date */
150 void FutureEvtSet::add_event(double date, Event* evt)
152 heap_.emplace(date, evt);
155 /** @brief returns the date of the next occurring event (or -1 if empty) */
156 double FutureEvtSet::next_date() const
158 return heap_.empty() ? -1.0 : heap_.top().first;
161 /** @brief Retrieves the next occurring event, or nullptr if none happens before date */
162 Event* FutureEvtSet::pop_leq(double date, double* value, resource::Resource** resource)
164 double event_date = next_date();
165 if (event_date > date || heap_.empty())
168 Event* event = heap_.top().second;
169 Profile* profile = event->profile;
170 DatedValue dateVal = profile->next(event);
172 *resource = event->resource;
173 *value = dateVal.value_;
179 } // namespace profile
180 } // namespace kernel
181 } // namespace simgrid
184 for (auto const& kv : trace_list)
189 void tmgr_trace_event_unref(simgrid::kernel::profile::Event** event)
191 if ((*event)->free_me) {