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"
11 #include "src/surf/trace_mgr.hpp"
12 #include "src/surf/surf_interface.hpp"
13 #include "surf_private.h"
14 #include "xbt/RngStream.h"
16 #include <unordered_map>
17 #include <boost/algorithm/string/join.hpp>
19 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_trace, surf, "Surf trace management");
21 static std::unordered_map<const char *, simgrid::trace_mgr::trace*> trace_list;
23 simgrid::trace_mgr::trace::trace()=default;
24 simgrid::trace_mgr::trace::~trace()=default;
25 simgrid::trace_mgr::future_evt_set::future_evt_set()=default;
27 simgrid::trace_mgr::future_evt_set::~future_evt_set()
29 xbt_heap_free(p_heap);
32 tmgr_trace_t tmgr_trace_new_from_string(const char *name, const char *input, double periodicity)
35 tmgr_event_t last_event = nullptr;
39 xbt_assert(trace_list.find(name) == trace_list.end(), "Refusing to define trace %s twice", name);
40 xbt_assert(periodicity >= 0, "Invalid periodicity %g (must be positive)", periodicity);
42 tmgr_trace_t trace = new simgrid::trace_mgr::trace();
44 xbt_dynar_t list = xbt_str_split(input, "\n\r");
45 xbt_dynar_foreach(list, cpt, val) {
48 xbt_str_trim(val, " \t\n\r\x0B");
49 if (val[0] == '#' || val[0] == '\0' || val[0] == '%') // pass comments
52 if (sscanf(val, "PERIODICITY " "%lg" "\n", &periodicity) == 1)
55 xbt_assert(sscanf(val, "%lg" " " "%lg" "\n", &event.delta, &event.value) == 2,
56 "%s:%d: Syntax error in trace\n%s", name, linecount, input);
59 xbt_assert(last_event->delta <= event.delta,
60 "%s:%d: Invalid trace: Events must be sorted, but time %g > time %g.\n%s",
61 name, linecount, last_event->delta, event.delta, input);
63 last_event->delta = event.delta - last_event->delta;
65 if(event.delta > 0.0){
66 s_tmgr_event_t first_event;
67 first_event.delta=event.delta;
68 first_event.value=-1.0;
69 trace->event_list.push_back(first_event);
72 trace->event_list.push_back(event);
73 last_event = &(trace->event_list.back());
76 last_event->delta = periodicity;
78 trace_list.insert({xbt_strdup(name), trace});
80 xbt_dynar_free(&list);
84 tmgr_trace_t tmgr_trace_new_from_file(const char *filename)
86 xbt_assert(filename && filename[0], "Cannot parse a trace from the null or empty filename");
87 xbt_assert(trace_list.find(filename) == trace_list.end(), "Refusing to define trace %s twice", filename);
89 FILE *f = surf_fopen(filename, "r");
90 xbt_assert(f != nullptr, "Cannot open file '%s' (path=%s)", filename, (boost::join(surf_path, ":")).c_str());
92 char *tstr = xbt_str_from_file(f);
94 tmgr_trace_t trace = tmgr_trace_new_from_string(filename, tstr, 0.);
100 tmgr_trace_t tmgr_empty_trace_new()
102 tmgr_trace_t trace = new simgrid::trace_mgr::trace();
103 s_tmgr_event_t event;
106 trace->event_list.push_back(event);
111 void tmgr_trace_free(tmgr_trace_t trace)
116 /** @brief Registers a new trace into the future event set, and get an iterator over the integrated trace */
117 tmgr_trace_iterator_t simgrid::trace_mgr::future_evt_set::add_trace(tmgr_trace_t trace, double start_time, surf::Resource *resource)
119 tmgr_trace_iterator_t trace_iterator = nullptr;
121 trace_iterator = xbt_new0(s_tmgr_trace_event_t, 1);
122 trace_iterator->trace = trace;
123 trace_iterator->idx = 0;
124 trace_iterator->resource = resource;
126 xbt_assert((trace_iterator->idx < trace->event_list.size()), "Your trace should have at least one event!");
128 xbt_heap_push(p_heap, trace_iterator, start_time);
130 return trace_iterator;
133 /** @brief returns the date of the next occurring event (pure function) */
134 double simgrid::trace_mgr::future_evt_set::next_date() const
136 if (xbt_heap_size(p_heap))
137 return (xbt_heap_maxkey(p_heap));
142 /** @brief Retrieves the next occurring event, or nullptr if none happens before #date */
143 tmgr_trace_iterator_t simgrid::trace_mgr::future_evt_set::pop_leq(
144 double date, double *value, simgrid::surf::Resource **resource)
146 double event_date = next_date();
147 if (event_date > date)
150 tmgr_trace_iterator_t trace_iterator = (tmgr_trace_iterator_t)xbt_heap_pop(p_heap);
151 if (trace_iterator == nullptr)
154 tmgr_trace_t trace = trace_iterator->trace;
155 *resource = trace_iterator->resource;
157 tmgr_event_t event = &(trace->event_list.at(trace_iterator->idx));
159 *value = event->value;
161 if (trace_iterator->idx < trace->event_list.size() - 1) {
162 xbt_heap_push(p_heap, trace_iterator, event_date + event->delta);
163 trace_iterator->idx++;
164 } else if (event->delta > 0) { /* Last element, checking for periodicity */
165 xbt_heap_push(p_heap, trace_iterator, event_date + event->delta);
166 trace_iterator->idx = 1; /* not 0 as the first event is a placeholder to handle when events really start */
167 } else { /* We don't need this trace_event anymore */
168 trace_iterator->free_me = 1;
171 return trace_iterator;
176 for (auto kv : trace_list) {
177 xbt_free((char*)kv.first);
182 void tmgr_trace_event_unref(tmgr_trace_iterator_t *trace_event)
184 if ((*trace_event)->free_me) {
185 xbt_free(*trace_event);
186 *trace_event = nullptr;