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()
23 event_list = xbt_dynar_new(sizeof(s_tmgr_event_t), NULL);
26 simgrid::trace_mgr::trace::~trace()
28 xbt_dynar_free(&event_list);
30 simgrid::trace_mgr::future_evt_set::future_evt_set()
34 simgrid::trace_mgr::future_evt_set::~future_evt_set()
36 xbt_heap_free(p_heap);
39 tmgr_trace_t tmgr_trace_new_from_string(const char *name, const char *input, double periodicity)
41 tmgr_trace_t trace = NULL;
44 tmgr_event_t last_event = NULL;
49 if (trace_list.find(name) != trace_list.end()) {
50 XBT_WARN("Ignoring redefinition of trace %s", name);
51 return trace_list.at(name);
54 xbt_assert(periodicity >= 0, "Invalid periodicity %g (must be positive)", periodicity);
56 trace = new simgrid::trace_mgr::trace();
58 list = xbt_str_split(input, "\n\r");
60 xbt_dynar_foreach(list, cpt, val) {
62 xbt_str_trim(val, " \t\n\r\x0B");
63 if (val[0] == '#' || val[0] == '\0' || val[0] == '%')
66 if (sscanf(val, "PERIODICITY " "%lg" "\n", &periodicity) == 1)
69 if (sscanf(val, "%lg" " " "%lg" "\n", &event.delta, &event.value) != 2)
70 xbt_die("%s:%d: Syntax error in trace\n%s", name, linecount, input);
73 if (last_event->delta > event.delta) {
74 xbt_die("%s:%d: Invalid trace: Events must be sorted, "
75 "but time %g > time %g.\n%s",
76 name, linecount, last_event->delta, event.delta, input);
78 last_event->delta = event.delta - last_event->delta;
80 if(event.delta > 0.0){
81 s_tmgr_event_t first_event;
82 first_event.delta=event.delta;
83 first_event.value=-1.0;
84 xbt_dynar_push(trace->event_list, &first_event);
87 xbt_dynar_push(trace->event_list, &event);
88 last_event = (tmgr_event_t)xbt_dynar_get_ptr(trace->event_list, xbt_dynar_length(trace->event_list) - 1);
91 last_event->delta = periodicity;
93 trace_list.insert({xbt_strdup(name), trace});
95 xbt_dynar_free(&list);
99 tmgr_trace_t tmgr_trace_new_from_file(const char *filename)
101 tmgr_trace_t trace = NULL;
103 xbt_assert(filename && filename[0], "Cannot parse a trace from the null or empty filename");
105 if (trace_list.find(filename) != trace_list.end()) {
106 XBT_WARN("Ignoring redefinition of trace file %s", filename);
107 return trace_list.at(filename);
110 FILE *f = surf_fopen(filename, "r");
111 xbt_assert(f != NULL,
112 "Cannot open file '%s' (path=%s)", filename, xbt_str_join(surf_path, ":"));
114 char *tstr = xbt_str_from_file(f);
116 trace = tmgr_trace_new_from_string(filename, tstr, 0.);
122 tmgr_trace_t tmgr_empty_trace_new(void)
124 tmgr_trace_t trace = NULL;
125 s_tmgr_event_t event;
127 trace = new simgrid::trace_mgr::trace();
131 xbt_dynar_push(trace->event_list, &event);
136 void tmgr_trace_free(tmgr_trace_t trace)
141 /** @brief Registers a new trace into the future event set, and get an iterator over the integrated trace */
142 tmgr_trace_iterator_t simgrid::trace_mgr::future_evt_set::add_trace(tmgr_trace_t trace, double start_time, surf::Resource *resource)
144 tmgr_trace_iterator_t trace_iterator = NULL;
146 trace_iterator = xbt_new0(s_tmgr_trace_event_t, 1);
147 trace_iterator->trace = trace;
148 trace_iterator->idx = 0;
149 trace_iterator->resource = resource;
151 xbt_assert((trace_iterator->idx < xbt_dynar_length(trace->event_list)), "Your trace should have at least one event!");
153 xbt_heap_push(p_heap, trace_iterator, start_time);
155 return trace_iterator;
158 /** @brief returns the date of the next occurring event (pure function) */
159 double simgrid::trace_mgr::future_evt_set::next_date() const
161 if (xbt_heap_size(p_heap))
162 return (xbt_heap_maxkey(p_heap));
167 /** @brief Retrieves the next occurring event, or NULL if none happens before #date */
168 tmgr_trace_iterator_t simgrid::trace_mgr::future_evt_set::pop_leq(
169 double date, double *value, simgrid::surf::Resource **resource)
171 double event_date = next_date();
172 if (event_date > date)
175 tmgr_trace_iterator_t trace_iterator = (tmgr_trace_iterator_t)xbt_heap_pop(p_heap);
176 if (trace_iterator == NULL)
179 tmgr_trace_t trace = trace_iterator->trace;
180 *resource = trace_iterator->resource;
182 tmgr_event_t event = (tmgr_event_t)xbt_dynar_get_ptr(trace->event_list, trace_iterator->idx);
184 *value = event->value;
186 if (trace_iterator->idx < xbt_dynar_length(trace->event_list) - 1) {
187 xbt_heap_push(p_heap, trace_iterator, event_date + event->delta);
188 trace_iterator->idx++;
189 } else if (event->delta > 0) { /* Last element, checking for periodicity */
190 xbt_heap_push(p_heap, trace_iterator, event_date + event->delta);
191 trace_iterator->idx = 1; /* not 0 as the first event is a placeholder to handle when events really start */
192 } else { /* We don't need this trace_event anymore */
193 trace_iterator->free_me = 1;
196 return trace_iterator;
199 void tmgr_finalize(void)
201 for (auto kv : trace_list)
205 void tmgr_trace_event_unref(tmgr_trace_iterator_t *trace_event)
207 if ((*trace_event)->free_me) {
208 xbt_free(*trace_event);
209 *trace_event = nullptr;