1 /* Copyright (c) 2004-2005, 2007, 2009-2014. 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"
12 #include "src/surf/surf_interface.hpp"
13 #include "src/surf/trace_mgr.hpp"
14 #include "surf_private.h"
15 #include "xbt/RngStream.h"
16 #include <boost/algorithm/string.hpp>
17 #include <boost/algorithm/string/join.hpp>
18 #include <boost/algorithm/string/split.hpp>
22 #include <unordered_map>
24 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_trace, surf, "Surf trace management");
26 namespace tmgr = simgrid::trace_mgr;
28 static std::unordered_map<const char*, tmgr::trace*> trace_list;
30 static inline bool doubleEq(double d1, double d2)
32 return fabs(d1 - d2) < 0.0001;
37 bool DatedValue::operator==(DatedValue e2)
39 return (doubleEq(date_, e2.date_)) && (doubleEq(value_, e2.value_));
41 std::ostream& operator<<(std::ostream& out, const DatedValue& e)
43 out << e.date_ << " " << e.value_;
49 /* Add the first fake event storing the time at which the trace begins */
50 tmgr::DatedValue val(0, -1);
51 event_list.push_back(val);
53 trace::~trace() = default;
54 future_evt_set::future_evt_set() = default;
55 simgrid::trace_mgr::future_evt_set::~future_evt_set()
57 xbt_heap_free(p_heap);
62 tmgr_trace_t tmgr_trace_new_from_string(const char* 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);
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(), "WAITFOR %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, 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, 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({xbt_strdup(name), trace});
108 tmgr_trace_t tmgr_trace_new_from_file(const char *filename)
110 xbt_assert(filename && filename[0], "Cannot parse a trace from the null or empty filename");
111 xbt_assert(trace_list.find(filename) == trace_list.end(), "Refusing to define trace %s twice", filename);
113 std::ifstream* f = surf_ifsopen(filename);
114 xbt_assert(!f->fail(), "Cannot open file '%s' (path=%s)", filename, (boost::join(surf_path, ":")).c_str());
116 std::stringstream buffer;
117 buffer << f->rdbuf();
118 tmgr_trace_t trace = tmgr_trace_new_from_string(filename, buffer.str(), -1);
125 void tmgr_trace_free(tmgr_trace_t trace)
130 /** @brief Registers a new trace into the future event set, and get an iterator over the integrated trace */
131 tmgr_trace_event_t simgrid::trace_mgr::future_evt_set::add_trace(tmgr_trace_t trace, surf::Resource* resource)
133 tmgr_trace_event_t trace_iterator = nullptr;
135 trace_iterator = xbt_new0(s_tmgr_trace_event_t, 1);
136 trace_iterator->trace = trace;
137 trace_iterator->idx = 0;
138 trace_iterator->resource = resource;
140 xbt_assert((trace_iterator->idx < trace->event_list.size()), "Your trace should have at least one event!");
142 xbt_heap_push(p_heap, trace_iterator, 0. /*start_time*/);
144 return trace_iterator;
147 /** @brief returns the date of the next occurring event (pure function) */
148 double simgrid::trace_mgr::future_evt_set::next_date() const
150 if (xbt_heap_size(p_heap))
151 return (xbt_heap_maxkey(p_heap));
156 /** @brief Retrieves the next occurring event, or nullptr if none happens before #date */
157 tmgr_trace_event_t simgrid::trace_mgr::future_evt_set::pop_leq(double date, double* value,
158 simgrid::surf::Resource** resource)
160 double event_date = next_date();
161 if (event_date > date)
164 tmgr_trace_event_t trace_iterator = (tmgr_trace_event_t)xbt_heap_pop(p_heap);
165 if (trace_iterator == nullptr)
168 tmgr_trace_t trace = trace_iterator->trace;
169 *resource = trace_iterator->resource;
171 tmgr::DatedValue dateVal = trace->event_list.at(trace_iterator->idx);
173 *value = dateVal.value_;
175 if (trace_iterator->idx < trace->event_list.size() - 1) {
176 xbt_heap_push(p_heap, trace_iterator, event_date + dateVal.date_);
177 trace_iterator->idx++;
178 } else if (dateVal.date_ > 0) { /* Last element. Shall we loop? */
179 xbt_heap_push(p_heap, trace_iterator, event_date + dateVal.date_);
180 trace_iterator->idx = 1; /* idx=0 is a placeholder to store when events really start */
181 } else { /* If we don't loop, we don't need this trace_event anymore */
182 trace_iterator->free_me = 1;
185 return trace_iterator;
190 for (auto kv : trace_list) {
191 xbt_free((char*)kv.first);
196 void tmgr_trace_event_unref(tmgr_trace_event_t* trace_event)
198 if ((*trace_event)->free_me) {
199 xbt_free(*trace_event);
200 *trace_event = nullptr;