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. */
6 #include "xbt/sysdep.h"
9 #include "src/surf/surf_interface.hpp"
10 #include "src/surf/trace_mgr.hpp"
11 #include "surf_private.hpp"
12 #include <boost/algorithm/string.hpp>
13 #include <boost/algorithm/string/join.hpp>
14 #include <boost/algorithm/string/split.hpp>
18 #include <unordered_map>
20 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_trace, surf, "Surf trace management");
22 namespace tmgr = simgrid::trace_mgr;
24 static std::unordered_map<std::string, tmgr::trace*> trace_list;
26 static inline bool doubleEq(double d1, double d2)
28 return fabs(d1 - d2) < 0.0001;
33 bool DatedValue::operator==(DatedValue e2)
35 return (doubleEq(date_, e2.date_)) && (doubleEq(value_, e2.value_));
37 std::ostream& operator<<(std::ostream& out, const DatedValue& e)
39 out << e.date_ << " " << e.value_;
45 /* Add the first fake event storing the time at which the trace begins */
46 tmgr::DatedValue val(0, -1);
47 event_list.push_back(val);
49 trace::~trace() = default;
50 future_evt_set::future_evt_set() = default;
51 future_evt_set::~future_evt_set()
53 while (not heap_.empty()) {
54 delete heap_.top().second;
61 tmgr_trace_t tmgr_trace_new_from_string(std::string name, std::string input, double periodicity)
64 tmgr_trace_t trace = new simgrid::trace_mgr::trace();
65 tmgr::DatedValue* last_event = &(trace->event_list.back());
67 xbt_assert(trace_list.find(name) == trace_list.end(), "Refusing to define trace %s twice", name.c_str());
69 std::vector<std::string> list;
70 boost::split(list, input, boost::is_any_of("\n\r"));
71 for (auto val : list) {
72 tmgr::DatedValue event;
75 if (val[0] == '#' || val[0] == '\0' || val[0] == '%') // pass comments
77 if (sscanf(val.c_str(), "PERIODICITY %lg\n", &periodicity) == 1)
79 if (sscanf(val.c_str(), "LOOPAFTER %lg\n", &periodicity) == 1)
82 xbt_assert(sscanf(val.c_str(), "%lg %lg\n", &event.date_, &event.value_) == 2, "%s:%d: Syntax error in trace\n%s",
83 name.c_str(), linecount, input.c_str());
85 xbt_assert(last_event->date_ <= event.date_,
86 "%s:%d: Invalid trace: Events must be sorted, but time %g > time %g.\n%s", name.c_str(), linecount,
87 last_event->date_, event.date_, input.c_str());
88 last_event->date_ = event.date_ - last_event->date_;
90 trace->event_list.push_back(event);
91 last_event = &(trace->event_list.back());
94 if (periodicity > 0) {
95 last_event->date_ = periodicity + trace->event_list.at(0).date_;
97 last_event->date_ = -1;
101 trace_list.insert({name, trace});
106 tmgr_trace_t tmgr_trace_new_from_file(std::string filename)
108 xbt_assert(not filename.empty(), "Cannot parse a trace from an empty filename");
109 xbt_assert(trace_list.find(filename) == trace_list.end(), "Refusing to define trace %s twice", filename.c_str());
111 std::ifstream* f = surf_ifsopen(filename);
112 xbt_assert(not f->fail(), "Cannot open file '%s' (path=%s)", filename.c_str(), (boost::join(surf_path, ":")).c_str());
114 std::stringstream buffer;
115 buffer << f->rdbuf();
118 return tmgr_trace_new_from_string(filename, buffer.str(), -1);
121 /** @brief Registers a new trace into the future event set, and get an iterator over the integrated trace */
122 tmgr_trace_event_t simgrid::trace_mgr::future_evt_set::add_trace(tmgr_trace_t trace,
123 kernel::resource::Resource* resource)
125 tmgr_trace_event_t trace_iterator = nullptr;
127 trace_iterator = new simgrid::kernel::resource::TraceEvent();
128 trace_iterator->trace = trace;
129 trace_iterator->idx = 0;
130 trace_iterator->resource = resource;
131 trace_iterator->free_me = false;
133 xbt_assert((trace_iterator->idx < trace->event_list.size()), "Your trace should have at least one event!");
135 heap_.emplace(0.0 /* start time */, trace_iterator);
137 return trace_iterator;
140 /** @brief returns the date of the next occurring event (pure function) */
141 double simgrid::trace_mgr::future_evt_set::next_date() const
143 return heap_.empty() ? -1.0 : heap_.top().first;
146 /** @brief Retrieves the next occurring event, or nullptr if none happens before date */
147 tmgr_trace_event_t simgrid::trace_mgr::future_evt_set::pop_leq(double date, double* value,
148 kernel::resource::Resource** resource)
150 double event_date = next_date();
151 if (event_date > date)
156 tmgr_trace_event_t trace_iterator = heap_.top().second;
159 tmgr_trace_t trace = trace_iterator->trace;
160 *resource = trace_iterator->resource;
162 tmgr::DatedValue dateVal = trace->event_list.at(trace_iterator->idx);
164 *value = dateVal.value_;
166 if (trace_iterator->idx < trace->event_list.size() - 1) {
167 heap_.emplace(event_date + dateVal.date_, trace_iterator);
168 trace_iterator->idx++;
169 } else if (dateVal.date_ > 0) { /* Last element. Shall we loop? */
170 heap_.emplace(event_date + dateVal.date_, trace_iterator);
171 trace_iterator->idx = 1; /* idx=0 is a placeholder to store when events really start */
172 } else { /* If we don't loop, we don't need this trace_event anymore */
173 trace_iterator->free_me = true;
176 return trace_iterator;
181 for (auto const& kv : trace_list)
186 void tmgr_trace_event_unref(tmgr_trace_event_t* trace_event)
188 if ((*trace_event)->free_me) {
190 *trace_event = nullptr;