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), nullptr);
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)
42 tmgr_event_t last_event = nullptr;
46 xbt_assert(trace_list.find(name) == trace_list.end(), "Refusing to define trace %s twice", name);
47 xbt_assert(periodicity >= 0, "Invalid periodicity %g (must be positive)", periodicity);
49 tmgr_trace_t trace = new simgrid::trace_mgr::trace();
51 xbt_dynar_t list = xbt_str_split(input, "\n\r");
52 xbt_dynar_foreach(list, cpt, val) {
55 xbt_str_trim(val, " \t\n\r\x0B");
56 if (val[0] == '#' || val[0] == '\0' || val[0] == '%') // pass comments
59 if (sscanf(val, "PERIODICITY " "%lg" "\n", &periodicity) == 1)
62 xbt_assert(sscanf(val, "%lg" " " "%lg" "\n", &event.delta, &event.value) == 2,
63 "%s:%d: Syntax error in trace\n%s", name, linecount, input);
66 xbt_assert(last_event->delta <= event.delta,
67 "%s:%d: Invalid trace: Events must be sorted, but time %g > time %g.\n%s",
68 name, linecount, last_event->delta, event.delta, input);
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 xbt_dynar_push(trace->event_list, &first_event);
79 xbt_dynar_push(trace->event_list, &event);
80 last_event = (tmgr_event_t)xbt_dynar_get_ptr(trace->event_list, xbt_dynar_length(trace->event_list) - 1);
83 last_event->delta = periodicity;
85 trace_list.insert({xbt_strdup(name), trace});
87 xbt_dynar_free(&list);
91 tmgr_trace_t tmgr_trace_new_from_file(const char *filename)
93 xbt_assert(filename && filename[0], "Cannot parse a trace from the null or empty filename");
94 xbt_assert(trace_list.find(filename) == trace_list.end(), "Refusing to define trace %s twice", filename);
96 FILE *f = surf_fopen(filename, "r");
97 xbt_assert(f != nullptr,
98 "Cannot open file '%s' (path=%s)", filename, xbt_str_join(surf_path, ":"));
100 char *tstr = xbt_str_from_file(f);
102 tmgr_trace_t trace = tmgr_trace_new_from_string(filename, tstr, 0.);
108 tmgr_trace_t tmgr_empty_trace_new(void)
110 tmgr_trace_t trace = new simgrid::trace_mgr::trace();
111 s_tmgr_event_t event;
114 xbt_dynar_push(trace->event_list, &event);
119 void tmgr_trace_free(tmgr_trace_t trace)
124 /** @brief Registers a new trace into the future event set, and get an iterator over the integrated trace */
125 tmgr_trace_iterator_t simgrid::trace_mgr::future_evt_set::add_trace(tmgr_trace_t trace, double start_time, surf::Resource *resource)
127 tmgr_trace_iterator_t trace_iterator = nullptr;
129 trace_iterator = xbt_new0(s_tmgr_trace_event_t, 1);
130 trace_iterator->trace = trace;
131 trace_iterator->idx = 0;
132 trace_iterator->resource = resource;
134 xbt_assert((trace_iterator->idx < xbt_dynar_length(trace->event_list)), "Your trace should have at least one event!");
136 xbt_heap_push(p_heap, trace_iterator, start_time);
138 return trace_iterator;
141 /** @brief returns the date of the next occurring event (pure function) */
142 double simgrid::trace_mgr::future_evt_set::next_date() const
144 if (xbt_heap_size(p_heap))
145 return (xbt_heap_maxkey(p_heap));
150 /** @brief Retrieves the next occurring event, or nullptr if none happens before #date */
151 tmgr_trace_iterator_t simgrid::trace_mgr::future_evt_set::pop_leq(
152 double date, double *value, simgrid::surf::Resource **resource)
154 double event_date = next_date();
155 if (event_date > date)
158 tmgr_trace_iterator_t trace_iterator = (tmgr_trace_iterator_t)xbt_heap_pop(p_heap);
159 if (trace_iterator == nullptr)
162 tmgr_trace_t trace = trace_iterator->trace;
163 *resource = trace_iterator->resource;
165 tmgr_event_t event = (tmgr_event_t)xbt_dynar_get_ptr(trace->event_list, trace_iterator->idx);
167 *value = event->value;
169 if (trace_iterator->idx < xbt_dynar_length(trace->event_list) - 1) {
170 xbt_heap_push(p_heap, trace_iterator, event_date + event->delta);
171 trace_iterator->idx++;
172 } else if (event->delta > 0) { /* Last element, checking for periodicity */
173 xbt_heap_push(p_heap, trace_iterator, event_date + event->delta);
174 trace_iterator->idx = 1; /* not 0 as the first event is a placeholder to handle when events really start */
175 } else { /* We don't need this trace_event anymore */
176 trace_iterator->free_me = 1;
179 return trace_iterator;
182 void tmgr_finalize(void)
184 for (auto kv : trace_list) {
185 xbt_free((char*)kv.first);
190 void tmgr_trace_event_unref(tmgr_trace_iterator_t *trace_event)
192 if ((*trace_event)->free_me) {
193 xbt_free(*trace_event);
194 *trace_event = nullptr;