1 /* Copyright (c) 2004-2018. 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 "xbt/RngStream.h"
13 #include <boost/algorithm/string.hpp>
14 #include <boost/algorithm/string/join.hpp>
15 #include <boost/algorithm/string/split.hpp>
19 #include <unordered_map>
21 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_trace, surf, "Surf trace management");
23 namespace tmgr = simgrid::trace_mgr;
25 static std::unordered_map<std::string, tmgr::trace*> trace_list;
27 static inline bool doubleEq(double d1, double d2)
29 return fabs(d1 - d2) < 0.0001;
34 bool DatedValue::operator==(DatedValue e2)
36 return (doubleEq(date_, e2.date_)) && (doubleEq(value_, e2.value_));
38 std::ostream& operator<<(std::ostream& out, const DatedValue& e)
40 out << e.date_ << " " << e.value_;
46 /* Add the first fake event storing the time at which the trace begins */
47 tmgr::DatedValue val(0, -1);
48 event_list.push_back(val);
50 trace::~trace() = default;
51 future_evt_set::future_evt_set() = default;
52 future_evt_set::~future_evt_set()
54 while (not heap_.empty()) {
55 delete heap_.top().second;
62 tmgr_trace_t tmgr_trace_new_from_string(std::string name, std::string input, double periodicity)
65 tmgr_trace_t trace = new simgrid::trace_mgr::trace();
66 tmgr::DatedValue* last_event = &(trace->event_list.back());
68 xbt_assert(trace_list.find(name) == trace_list.end(), "Refusing to define trace %s twice", name.c_str());
70 std::vector<std::string> list;
71 boost::split(list, input, boost::is_any_of("\n\r"));
72 for (auto val : list) {
73 tmgr::DatedValue event;
76 if (val[0] == '#' || val[0] == '\0' || val[0] == '%') // pass comments
78 if (sscanf(val.c_str(), "PERIODICITY %lg\n", &periodicity) == 1)
80 if (sscanf(val.c_str(), "LOOPAFTER %lg\n", &periodicity) == 1)
83 xbt_assert(sscanf(val.c_str(), "%lg %lg\n", &event.date_, &event.value_) == 2, "%s:%d: Syntax error in trace\n%s",
84 name.c_str(), linecount, input.c_str());
86 xbt_assert(last_event->date_ <= event.date_,
87 "%s:%d: Invalid trace: Events must be sorted, but time %g > time %g.\n%s", name.c_str(), linecount,
88 last_event->date_, event.date_, input.c_str());
89 last_event->date_ = event.date_ - last_event->date_;
91 trace->event_list.push_back(event);
92 last_event = &(trace->event_list.back());
95 if (periodicity > 0) {
96 last_event->date_ = periodicity + trace->event_list.at(0).date_;
98 last_event->date_ = -1;
102 trace_list.insert({name, trace});
107 tmgr_trace_t tmgr_trace_new_from_file(std::string filename)
109 xbt_assert(not filename.empty(), "Cannot parse a trace from an empty filename");
110 xbt_assert(trace_list.find(filename) == trace_list.end(), "Refusing to define trace %s twice", filename.c_str());
112 std::ifstream* f = surf_ifsopen(filename);
113 xbt_assert(not f->fail(), "Cannot open file '%s' (path=%s)", filename.c_str(), (boost::join(surf_path, ":")).c_str());
115 std::stringstream buffer;
116 buffer << f->rdbuf();
119 return tmgr_trace_new_from_string(filename, buffer.str(), -1);
122 /** @brief Registers a new trace into the future event set, and get an iterator over the integrated trace */
123 tmgr_trace_event_t simgrid::trace_mgr::future_evt_set::add_trace(tmgr_trace_t trace,
124 kernel::resource::Resource* resource)
126 tmgr_trace_event_t trace_iterator = nullptr;
128 trace_iterator = new simgrid::kernel::resource::TraceEvent();
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 kernel::resource::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;