1 /* Copyright (c) 2004-2005, 2007, 2009-2014, 2016-2017. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
7 #include "xbt/sysdep.h"
10 #include "src/surf/surf_interface.hpp"
11 #include "src/surf/trace_mgr.hpp"
12 #include "surf_private.hpp"
13 #include "xbt/RngStream.h"
14 #include <boost/algorithm/string.hpp>
15 #include <boost/algorithm/string/join.hpp>
16 #include <boost/algorithm/string/split.hpp>
20 #include <unordered_map>
22 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_trace, surf, "Surf trace management");
24 namespace tmgr = simgrid::trace_mgr;
26 static std::unordered_map<std::string, tmgr::trace*> trace_list;
28 static inline bool doubleEq(double d1, double d2)
30 return fabs(d1 - d2) < 0.0001;
35 bool DatedValue::operator==(DatedValue e2)
37 return (doubleEq(date_, e2.date_)) && (doubleEq(value_, e2.value_));
39 std::ostream& operator<<(std::ostream& out, const DatedValue& e)
41 out << e.date_ << " " << e.value_;
47 /* Add the first fake event storing the time at which the trace begins */
48 tmgr::DatedValue val(0, -1);
49 event_list.push_back(val);
51 trace::~trace() = default;
52 future_evt_set::future_evt_set() = default;
53 future_evt_set::~future_evt_set()
55 while (not heap_.empty()) {
56 delete heap_.top().second;
63 tmgr_trace_t tmgr_trace_new_from_string(std::string name, std::string input, double periodicity)
66 tmgr_trace_t trace = new simgrid::trace_mgr::trace();
67 tmgr::DatedValue* last_event = &(trace->event_list.back());
69 xbt_assert(trace_list.find(name) == trace_list.end(), "Refusing to define trace %s twice", name.c_str());
71 std::vector<std::string> list;
72 boost::split(list, input, boost::is_any_of("\n\r"));
73 for (auto val : list) {
74 tmgr::DatedValue event;
77 if (val[0] == '#' || val[0] == '\0' || val[0] == '%') // pass comments
79 if (sscanf(val.c_str(), "PERIODICITY %lg\n", &periodicity) == 1)
81 if (sscanf(val.c_str(), "LOOPAFTER %lg\n", &periodicity) == 1)
84 xbt_assert(sscanf(val.c_str(), "%lg %lg\n", &event.date_, &event.value_) == 2, "%s:%d: Syntax error in trace\n%s",
85 name.c_str(), linecount, input.c_str());
87 xbt_assert(last_event->date_ <= event.date_,
88 "%s:%d: Invalid trace: Events must be sorted, but time %g > time %g.\n%s", name.c_str(), linecount,
89 last_event->date_, event.date_, input.c_str());
90 last_event->date_ = event.date_ - last_event->date_;
92 trace->event_list.push_back(event);
93 last_event = &(trace->event_list.back());
96 if (periodicity > 0) {
97 last_event->date_ = periodicity + trace->event_list.at(0).date_;
99 last_event->date_ = -1;
103 trace_list.insert({name, trace});
108 tmgr_trace_t tmgr_trace_new_from_file(std::string filename)
110 xbt_assert(not filename.empty(), "Cannot parse a trace from an empty filename");
111 xbt_assert(trace_list.find(filename) == trace_list.end(), "Refusing to define trace %s twice", filename.c_str());
113 std::ifstream* f = surf_ifsopen(filename);
114 xbt_assert(not f->fail(), "Cannot open file '%s' (path=%s)", filename.c_str(), (boost::join(surf_path, ":")).c_str());
116 std::stringstream buffer;
117 buffer << f->rdbuf();
120 return tmgr_trace_new_from_string(filename, buffer.str(), -1);
123 /** @brief Registers a new trace into the future event set, and get an iterator over the integrated trace */
124 tmgr_trace_event_t simgrid::trace_mgr::future_evt_set::add_trace(tmgr_trace_t trace, surf::Resource* resource)
126 tmgr_trace_event_t trace_iterator = nullptr;
128 trace_iterator = new s_tmgr_trace_event_t;
129 trace_iterator->trace = trace;
130 trace_iterator->idx = 0;
131 trace_iterator->resource = resource;
132 trace_iterator->free_me = false;
134 xbt_assert((trace_iterator->idx < trace->event_list.size()), "Your trace should have at least one event!");
136 heap_.emplace(0.0 /* start time */, trace_iterator);
138 return trace_iterator;
141 /** @brief returns the date of the next occurring event (pure function) */
142 double simgrid::trace_mgr::future_evt_set::next_date() const
144 return heap_.empty() ? -1.0 : heap_.top().first;
147 /** @brief Retrieves the next occurring event, or nullptr if none happens before #date */
148 tmgr_trace_event_t simgrid::trace_mgr::future_evt_set::pop_leq(double date, double* value,
149 simgrid::surf::Resource** resource)
151 double event_date = next_date();
152 if (event_date > date)
157 tmgr_trace_event_t trace_iterator = heap_.top().second;
160 tmgr_trace_t trace = trace_iterator->trace;
161 *resource = trace_iterator->resource;
163 tmgr::DatedValue dateVal = trace->event_list.at(trace_iterator->idx);
165 *value = dateVal.value_;
167 if (trace_iterator->idx < trace->event_list.size() - 1) {
168 heap_.emplace(event_date + dateVal.date_, trace_iterator);
169 trace_iterator->idx++;
170 } else if (dateVal.date_ > 0) { /* Last element. Shall we loop? */
171 heap_.emplace(event_date + dateVal.date_, trace_iterator);
172 trace_iterator->idx = 1; /* idx=0 is a placeholder to store when events really start */
173 } else { /* If we don't loop, we don't need this trace_event anymore */
174 trace_iterator->free_me = true;
177 return trace_iterator;
182 for (auto const& kv : trace_list)
187 void tmgr_trace_event_unref(tmgr_trace_event_t* trace_event)
189 if ((*trace_event)->free_me) {
191 *trace_event = nullptr;