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 "surf_private.h"
13 #include "xbt/RngStream.h"
15 #include <unordered_map>
17 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_trace, surf, "Surf trace management");
19 static std::unordered_map<const char *, simgrid::trace_mgr::trace*> trace_list;
21 simgrid::trace_mgr::trace::trace()=default;
22 simgrid::trace_mgr::trace::~trace()=default;
23 simgrid::trace_mgr::future_evt_set::future_evt_set()=default;
25 simgrid::trace_mgr::future_evt_set::~future_evt_set()
27 xbt_heap_free(p_heap);
30 tmgr_trace_t tmgr_trace_new_from_string(const char *name, const char *input, double periodicity)
33 tmgr_event_t last_event = nullptr;
37 xbt_assert(trace_list.find(name) == trace_list.end(), "Refusing to define trace %s twice", name);
38 xbt_assert(periodicity >= 0, "Invalid periodicity %g (must be positive)", periodicity);
40 tmgr_trace_t trace = new simgrid::trace_mgr::trace();
42 xbt_dynar_t list = xbt_str_split(input, "\n\r");
43 xbt_dynar_foreach(list, cpt, val) {
46 xbt_str_trim(val, " \t\n\r\x0B");
47 if (val[0] == '#' || val[0] == '\0' || val[0] == '%') // pass comments
50 if (sscanf(val, "PERIODICITY " "%lg" "\n", &periodicity) == 1)
53 xbt_assert(sscanf(val, "%lg" " " "%lg" "\n", &event.delta, &event.value) == 2,
54 "%s:%d: Syntax error in trace\n%s", name, linecount, input);
57 xbt_assert(last_event->delta <= event.delta,
58 "%s:%d: Invalid trace: Events must be sorted, but time %g > time %g.\n%s",
59 name, linecount, last_event->delta, event.delta, input);
61 last_event->delta = event.delta - last_event->delta;
63 if(event.delta > 0.0){
64 s_tmgr_event_t first_event;
65 first_event.delta=event.delta;
66 first_event.value=-1.0;
67 trace->event_list.push_back(first_event);
70 trace->event_list.push_back(event);
71 last_event = &(trace->event_list.back());
74 last_event->delta = periodicity;
76 trace_list.insert({xbt_strdup(name), trace});
78 xbt_dynar_free(&list);
82 tmgr_trace_t tmgr_trace_new_from_file(const char *filename)
84 xbt_assert(filename && filename[0], "Cannot parse a trace from the null or empty filename");
85 xbt_assert(trace_list.find(filename) == trace_list.end(), "Refusing to define trace %s twice", filename);
87 FILE *f = surf_fopen(filename, "r");
88 xbt_assert(f != nullptr,
89 "Cannot open file '%s' (path=%s)", filename, xbt_str_join(surf_path, ":"));
91 char *tstr = xbt_str_from_file(f);
93 tmgr_trace_t trace = tmgr_trace_new_from_string(filename, tstr, 0.);
99 tmgr_trace_t tmgr_empty_trace_new()
101 tmgr_trace_t trace = new simgrid::trace_mgr::trace();
102 s_tmgr_event_t event;
105 trace->event_list.push_back(event);
110 void tmgr_trace_free(tmgr_trace_t trace)
115 /** @brief Registers a new trace into the future event set, and get an iterator over the integrated trace */
116 tmgr_trace_iterator_t simgrid::trace_mgr::future_evt_set::add_trace(tmgr_trace_t trace, double start_time, surf::Resource *resource)
118 tmgr_trace_iterator_t trace_iterator = nullptr;
120 trace_iterator = xbt_new0(s_tmgr_trace_event_t, 1);
121 trace_iterator->trace = trace;
122 trace_iterator->idx = 0;
123 trace_iterator->resource = resource;
125 xbt_assert((trace_iterator->idx < trace->event_list.size()), "Your trace should have at least one event!");
127 xbt_heap_push(p_heap, trace_iterator, start_time);
129 return trace_iterator;
132 /** @brief returns the date of the next occurring event (pure function) */
133 double simgrid::trace_mgr::future_evt_set::next_date() const
135 if (xbt_heap_size(p_heap))
136 return (xbt_heap_maxkey(p_heap));
141 /** @brief Retrieves the next occurring event, or nullptr if none happens before #date */
142 tmgr_trace_iterator_t simgrid::trace_mgr::future_evt_set::pop_leq(
143 double date, double *value, simgrid::surf::Resource **resource)
145 double event_date = next_date();
146 if (event_date > date)
149 tmgr_trace_iterator_t trace_iterator = (tmgr_trace_iterator_t)xbt_heap_pop(p_heap);
150 if (trace_iterator == nullptr)
153 tmgr_trace_t trace = trace_iterator->trace;
154 *resource = trace_iterator->resource;
156 tmgr_event_t event = &(trace->event_list.at(trace_iterator->idx));
158 *value = event->value;
160 if (trace_iterator->idx < trace->event_list.size() - 1) {
161 xbt_heap_push(p_heap, trace_iterator, event_date + event->delta);
162 trace_iterator->idx++;
163 } else if (event->delta > 0) { /* Last element, checking for periodicity */
164 xbt_heap_push(p_heap, trace_iterator, event_date + event->delta);
165 trace_iterator->idx = 1; /* not 0 as the first event is a placeholder to handle when events really start */
166 } else { /* We don't need this trace_event anymore */
167 trace_iterator->free_me = 1;
170 return trace_iterator;
175 for (auto kv : trace_list) {
176 xbt_free((char*)kv.first);
181 void tmgr_trace_event_unref(tmgr_trace_iterator_t *trace_event)
183 if ((*trace_event)->free_me) {
184 xbt_free(*trace_event);
185 *trace_event = nullptr;