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 static std::unordered_map<const char*, simgrid::trace_mgr::trace*> trace_list;
28 simgrid::trace_mgr::trace::trace()=default;
29 simgrid::trace_mgr::trace::~trace()=default;
30 simgrid::trace_mgr::future_evt_set::future_evt_set()=default;
32 simgrid::trace_mgr::future_evt_set::~future_evt_set()
34 xbt_heap_free(p_heap);
37 tmgr_trace_t tmgr_trace_new_from_string(const char* name, std::string input, double periodicity)
40 tmgr_event_t last_event = nullptr;
42 xbt_assert(trace_list.find(name) == trace_list.end(), "Refusing to define trace %s twice", name);
43 xbt_assert(periodicity >= 0, "Invalid periodicity %g (must be positive)", periodicity);
45 tmgr_trace_t trace = new simgrid::trace_mgr::trace();
47 std::vector<std::string> list;
48 boost::split(list, input, boost::is_any_of("\n\r"));
49 for (auto val : list) {
53 if (val[0] == '#' || val[0] == '\0' || val[0] == '%') // pass comments
55 if (sscanf(val.c_str(), "PERIODICITY " "%lg" "\n", &periodicity) == 1)
58 xbt_assert(sscanf(val.c_str(), "%lg"
62 &event.delta, &event.value) == 2,
63 "%s:%d: Syntax error in trace\n%s", name, linecount, input.c_str());
66 xbt_assert(last_event->delta <= event.delta,
67 "%s:%d: Invalid trace: Events must be sorted, but time %g > time %g.\n%s", name, linecount,
68 last_event->delta, event.delta, input.c_str());
70 last_event->delta = event.delta - last_event->delta;
72 if(event.delta > 0.0){
73 s_tmgr_event_t first_event;
74 first_event.delta=event.delta;
75 first_event.value=-1.0;
76 trace->event_list.push_back(first_event);
79 trace->event_list.push_back(event);
80 last_event = &(trace->event_list.back());
83 last_event->delta = periodicity;
85 trace_list.insert({xbt_strdup(name), trace});
90 tmgr_trace_t tmgr_trace_new_from_file(const char *filename)
92 xbt_assert(filename && filename[0], "Cannot parse a trace from the null or empty filename");
93 xbt_assert(trace_list.find(filename) == trace_list.end(), "Refusing to define trace %s twice", filename);
95 std::ifstream* f = surf_ifsopen(filename);
96 xbt_assert(!f->fail(), "Cannot open file '%s' (path=%s)", filename, (boost::join(surf_path, ":")).c_str());
98 std::stringstream buffer;
100 tmgr_trace_t trace = tmgr_trace_new_from_string(filename, buffer.str(), 0.);
107 tmgr_trace_t tmgr_empty_trace_new()
109 tmgr_trace_t trace = new simgrid::trace_mgr::trace();
110 s_tmgr_event_t event;
113 trace->event_list.push_back(event);
118 void tmgr_trace_free(tmgr_trace_t trace)
123 /** @brief Registers a new trace into the future event set, and get an iterator over the integrated trace */
124 tmgr_trace_iterator_t simgrid::trace_mgr::future_evt_set::add_trace(tmgr_trace_t trace, double start_time, surf::Resource *resource)
126 tmgr_trace_iterator_t trace_iterator = nullptr;
128 trace_iterator = xbt_new0(s_tmgr_trace_event_t, 1);
129 trace_iterator->trace = trace;
130 trace_iterator->idx = 0;
131 trace_iterator->resource = resource;
133 xbt_assert((trace_iterator->idx < trace->event_list.size()), "Your trace should have at least one event!");
135 xbt_heap_push(p_heap, trace_iterator, start_time);
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 if (xbt_heap_size(p_heap))
144 return (xbt_heap_maxkey(p_heap));
149 /** @brief Retrieves the next occurring event, or nullptr if none happens before #date */
150 tmgr_trace_iterator_t simgrid::trace_mgr::future_evt_set::pop_leq(
151 double date, double *value, simgrid::surf::Resource **resource)
153 double event_date = next_date();
154 if (event_date > date)
157 tmgr_trace_iterator_t trace_iterator = (tmgr_trace_iterator_t)xbt_heap_pop(p_heap);
158 if (trace_iterator == nullptr)
161 tmgr_trace_t trace = trace_iterator->trace;
162 *resource = trace_iterator->resource;
164 tmgr_event_t event = &(trace->event_list.at(trace_iterator->idx));
166 *value = event->value;
168 if (trace_iterator->idx < trace->event_list.size() - 1) {
169 xbt_heap_push(p_heap, trace_iterator, event_date + event->delta);
170 trace_iterator->idx++;
171 } else if (event->delta > 0) { /* Last element, checking for periodicity */
172 xbt_heap_push(p_heap, trace_iterator, event_date + event->delta);
173 trace_iterator->idx = 1; /* not 0 as the first event is a placeholder to handle when events really start */
174 } else { /* We don't need this trace_event anymore */
175 trace_iterator->free_me = 1;
178 return trace_iterator;
183 for (auto kv : trace_list) {
184 xbt_free((char*)kv.first);
189 void tmgr_trace_event_unref(tmgr_trace_iterator_t *trace_event)
191 if ((*trace_event)->free_me) {
192 xbt_free(*trace_event);
193 *trace_event = nullptr;