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"
11 #include "src/surf/surf_interface.hpp"
12 #include "src/surf/trace_mgr.hpp"
13 #include "surf_private.h"
14 #include "xbt/RngStream.h"
15 #include <boost/algorithm/string.hpp>
16 #include <boost/algorithm/string/join.hpp>
17 #include <boost/algorithm/string/split.hpp>
21 #include <unordered_map>
23 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_trace, surf, "Surf trace management");
25 namespace tmgr = simgrid::trace_mgr;
27 static std::unordered_map<std::string, tmgr::trace*> trace_list;
29 static inline bool doubleEq(double d1, double d2)
31 return fabs(d1 - d2) < 0.0001;
36 bool DatedValue::operator==(DatedValue e2)
38 return (doubleEq(date_, e2.date_)) && (doubleEq(value_, e2.value_));
40 std::ostream& operator<<(std::ostream& out, const DatedValue& e)
42 out << e.date_ << " " << e.value_;
48 /* Add the first fake event storing the time at which the trace begins */
49 tmgr::DatedValue val(0, -1);
50 event_list.push_back(val);
52 trace::~trace() = default;
53 future_evt_set::future_evt_set() = default;
54 simgrid::trace_mgr::future_evt_set::~future_evt_set()
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, surf::Resource* resource)
124 tmgr_trace_event_t trace_iterator = nullptr;
126 trace_iterator = xbt_new0(s_tmgr_trace_event_t, 1);
127 trace_iterator->trace = trace;
128 trace_iterator->idx = 0;
129 trace_iterator->resource = resource;
131 xbt_assert((trace_iterator->idx < trace->event_list.size()), "Your trace should have at least one event!");
133 xbt_heap_push(heap_, trace_iterator, 0. /*start_time*/);
135 return trace_iterator;
138 /** @brief returns the date of the next occurring event (pure function) */
139 double simgrid::trace_mgr::future_evt_set::next_date() const
141 if (xbt_heap_size(heap_))
142 return (xbt_heap_maxkey(heap_));
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 simgrid::surf::Resource** resource)
150 double event_date = next_date();
151 if (event_date > date)
154 tmgr_trace_event_t trace_iterator = (tmgr_trace_event_t)xbt_heap_pop(heap_);
155 if (trace_iterator == nullptr)
158 tmgr_trace_t trace = trace_iterator->trace;
159 *resource = trace_iterator->resource;
161 tmgr::DatedValue dateVal = trace->event_list.at(trace_iterator->idx);
163 *value = dateVal.value_;
165 if (trace_iterator->idx < trace->event_list.size() - 1) {
166 xbt_heap_push(heap_, trace_iterator, event_date + dateVal.date_);
167 trace_iterator->idx++;
168 } else if (dateVal.date_ > 0) { /* Last element. Shall we loop? */
169 xbt_heap_push(heap_, trace_iterator, event_date + dateVal.date_);
170 trace_iterator->idx = 1; /* idx=0 is a placeholder to store when events really start */
171 } else { /* If we don't loop, we don't need this trace_event anymore */
172 trace_iterator->free_me = 1;
175 return trace_iterator;
180 for (auto const& kv : trace_list)
185 void tmgr_trace_event_unref(tmgr_trace_event_t* trace_event)
187 if ((*trace_event)->free_me) {
188 xbt_free(*trace_event);
189 *trace_event = nullptr;