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; // last event seen
42 xbt_assert(trace_list.find(name) == trace_list.end(), "Refusing to define trace %s twice", name);
44 tmgr_trace_t trace = new simgrid::trace_mgr::trace();
46 std::vector<std::string> list;
47 boost::split(list, input, boost::is_any_of("\n\r"));
48 for (auto val : list) {
52 if (val[0] == '#' || val[0] == '\0' || val[0] == '%') // pass comments
54 if (sscanf(val.c_str(), "PERIODICITY %lg\n", &periodicity) == 1)
56 if (sscanf(val.c_str(), "WAITFOR %lg\n", &periodicity) == 1)
59 xbt_assert(sscanf(val.c_str(), "%lg %lg\n", &event.delta, &event.value) == 2, "%s:%d: Syntax error in trace\n%s",
60 name, linecount, input.c_str());
63 xbt_assert(last_event->delta <= event.delta,
64 "%s:%d: Invalid trace: Events must be sorted, but time %g > time %g.\n%s", name, linecount,
65 last_event->delta, event.delta, input.c_str());
67 last_event->delta = event.delta - last_event->delta;
69 /* We need to add the first fake event stating the time at which the trace begins */
70 if (event.delta > 0.0) {
71 s_tmgr_event_t first_event;
72 first_event.delta=event.delta;
73 first_event.value=-1.0;
74 trace->event_list.push_back(first_event);
77 trace->event_list.push_back(event);
78 last_event = &(trace->event_list.back());
81 last_event->delta = periodicity > 0 ? periodicity + trace->event_list.at(0).delta : -1;
84 trace_list.insert({xbt_strdup(name), trace});
89 tmgr_trace_t tmgr_trace_new_from_file(const char *filename)
91 xbt_assert(filename && filename[0], "Cannot parse a trace from the null or empty filename");
92 xbt_assert(trace_list.find(filename) == trace_list.end(), "Refusing to define trace %s twice", filename);
94 std::ifstream* f = surf_ifsopen(filename);
95 xbt_assert(!f->fail(), "Cannot open file '%s' (path=%s)", filename, (boost::join(surf_path, ":")).c_str());
97 std::stringstream buffer;
99 tmgr_trace_t trace = tmgr_trace_new_from_string(filename, buffer.str(), -1);
106 tmgr_trace_t tmgr_empty_trace_new()
108 tmgr_trace_t trace = new simgrid::trace_mgr::trace();
109 s_tmgr_event_t event;
112 trace->event_list.push_back(event);
117 void tmgr_trace_free(tmgr_trace_t trace)
122 /** @brief Registers a new trace into the future event set, and get an iterator over the integrated trace */
123 tmgr_trace_iterator_t simgrid::trace_mgr::future_evt_set::add_trace(tmgr_trace_t trace, double start_time, surf::Resource *resource)
125 tmgr_trace_iterator_t trace_iterator = nullptr;
127 trace_iterator = xbt_new0(s_tmgr_trace_event_t, 1);
128 trace_iterator->trace = trace;
129 trace_iterator->idx = 0;
130 trace_iterator->resource = resource;
132 xbt_assert((trace_iterator->idx < trace->event_list.size()), "Your trace should have at least one event!");
134 xbt_heap_push(p_heap, trace_iterator, start_time);
136 return trace_iterator;
139 /** @brief returns the date of the next occurring event (pure function) */
140 double simgrid::trace_mgr::future_evt_set::next_date() const
142 if (xbt_heap_size(p_heap))
143 return (xbt_heap_maxkey(p_heap));
148 /** @brief Retrieves the next occurring event, or nullptr if none happens before #date */
149 tmgr_trace_iterator_t simgrid::trace_mgr::future_evt_set::pop_leq(double date, double* value,
150 simgrid::surf::Resource** resource)
152 double event_date = next_date();
153 if (event_date > date)
156 tmgr_trace_iterator_t trace_iterator = (tmgr_trace_iterator_t)xbt_heap_pop(p_heap);
157 if (trace_iterator == nullptr)
160 tmgr_trace_t trace = trace_iterator->trace;
161 *resource = trace_iterator->resource;
163 tmgr_event_t event = &(trace->event_list.at(trace_iterator->idx));
165 *value = event->value;
167 if (trace_iterator->idx < trace->event_list.size() - 1) {
168 xbt_heap_push(p_heap, trace_iterator, event_date + event->delta);
169 trace_iterator->idx++;
170 } else if (event->delta > 0) { /* Last element. Shall we loop? */
171 xbt_heap_push(p_heap, trace_iterator, event_date + event->delta);
172 trace_iterator->idx = 1; /* idx=0 is a placeholder to store when events really start */
173 } else { /* If we don't loop, we don't need this trace_event anymore */
174 trace_iterator->free_me = 1;
177 return trace_iterator;
182 for (auto kv : trace_list) {
183 xbt_free((char*)kv.first);
188 void tmgr_trace_event_unref(tmgr_trace_iterator_t *trace_event)
190 if ((*trace_event)->free_me) {
191 xbt_free(*trace_event);
192 *trace_event = nullptr;