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sanitize the surf API
[simgrid.git] / src / surf / cpu_cas01.cpp
1 /* Copyright (c) 2009-2011, 2013-2016. The SimGrid Team.
2  * All rights reserved.                                                     */
3
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. */
6
7 #include "cpu_cas01.hpp"
8 #include "cpu_ti.hpp"
9 #include "maxmin_private.hpp"
10 #include "simgrid/sg_config.h"
11 #include "src/surf/platform.hpp"
12
13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_cpu_cas, surf_cpu,
14                                 "Logging specific to the SURF CPU IMPROVED module");
15
16 /*********
17  * Model *
18  *********/
19 void surf_cpu_model_init_Cas01()
20 {
21   xbt_assert(!surf_cpu_model_pm);
22   xbt_assert(!surf_cpu_model_vm);
23
24   char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
25   if (!strcmp(optim, "TI")) {
26     surf_cpu_model_init_ti();
27     return;
28   }
29
30   surf_cpu_model_pm = new simgrid::surf::CpuCas01Model();
31   xbt_dynar_push(all_existing_models, &surf_cpu_model_pm);
32
33   surf_cpu_model_vm  = new simgrid::surf::CpuCas01Model();
34   xbt_dynar_push(all_existing_models, &surf_cpu_model_vm);
35
36   simgrid::surf::on_postparse.connect([]() {
37     surf_cpu_model_pm->addTraces();
38   });
39 }
40
41 namespace simgrid {
42 namespace surf {
43
44 CpuCas01Model::CpuCas01Model() : simgrid::surf::CpuModel()
45 {
46   char *optim = xbt_cfg_get_string(_sg_cfg_set, "cpu/optim");
47   int select = xbt_cfg_get_boolean(_sg_cfg_set, "cpu/maxmin_selective_update");
48
49   if (!strcmp(optim, "Full")) {
50     p_updateMechanism = UM_FULL;
51     m_selectiveUpdate = select;
52   } else if (!strcmp(optim, "Lazy")) {
53     p_updateMechanism = UM_LAZY;
54     m_selectiveUpdate = 1;
55     xbt_assert((select == 1)
56                ||
57                (xbt_cfg_is_default_value
58                 (_sg_cfg_set, "cpu/maxmin_selective_update")),
59                "Disabling selective update while using the lazy update mechanism is dumb!");
60   } else {
61     xbt_die("Unsupported optimization (%s) for this model", optim);
62   }
63
64   p_cpuRunningActionSetThatDoesNotNeedBeingChecked = new ActionList();
65
66   p_maxminSystem = lmm_system_new(m_selectiveUpdate);
67
68   if (getUpdateMechanism() == UM_LAZY) {
69     p_actionHeap = xbt_heap_new(8, NULL);
70     xbt_heap_set_update_callback(p_actionHeap,  surf_action_lmm_update_index_heap);
71     p_modifiedSet = new ActionLmmList();
72     p_maxminSystem->keep_track = p_modifiedSet;
73   }
74 }
75
76 CpuCas01Model::~CpuCas01Model()
77 {
78   lmm_system_free(p_maxminSystem);
79   p_maxminSystem = NULL;
80
81   if (p_actionHeap)
82     xbt_heap_free(p_actionHeap);
83   delete p_modifiedSet;
84
85   surf_cpu_model_pm = NULL;
86
87   delete p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
88 }
89
90 Cpu *CpuCas01Model::createCpu(simgrid::s4u::Host *host, xbt_dynar_t speedPeak,
91                       int pstate, double speedScale,
92                           tmgr_trace_t speedTrace, int core,
93                           int initiallyOn,
94                           tmgr_trace_t state_trace)
95 {
96   xbt_assert(xbt_dynar_getfirst_as(speedPeak, double) > 0.0,
97       "Speed has to be >0.0. Did you forget to specify the mandatory power attribute?");
98   xbt_assert(core > 0, "Invalid number of cores %d. Must be larger than 0", core);
99   Cpu *cpu = new CpuCas01(this, host, speedPeak, pstate, speedScale, speedTrace, core, initiallyOn, state_trace);
100   return cpu;
101 }
102
103 double CpuCas01Model::shareResourcesFull(double /*now*/)
104 {
105   return Model::shareResourcesMaxMin(getRunningActionSet(),
106                              p_maxminSystem, lmm_solve);
107 }
108
109 void CpuCas01Model::addTraces()
110 {
111   xbt_dict_cursor_t cursor = NULL;
112   char *trace_name, *elm;
113   static int called = 0;
114   if (called)
115     return;
116   called = 1;
117
118   /* connect host speed traces */
119   xbt_dict_foreach(trace_connect_list_host_speed, cursor, trace_name, elm) {
120     tmgr_trace_t trace = (tmgr_trace_t) xbt_dict_get_or_null(traces_set_list, trace_name);
121     Cpu *cpu = sg_host_by_name(elm)->pimpl_cpu;
122
123     xbt_assert(cpu, "Host %s undefined", elm);
124     xbt_assert(trace, "Trace %s undefined", trace_name);
125
126     cpu->set_speed_trace(trace);
127   }
128 }
129
130 /************
131  * Resource *
132  ************/
133 CpuCas01::CpuCas01(CpuCas01Model *model, simgrid::s4u::Host *host, xbt_dynar_t speedPeak,
134                          int pstate, double speedScale, tmgr_trace_t speedTrace, int core,
135                          int initiallyOn, tmgr_trace_t stateTrace)
136 : Cpu(model, host,
137   lmm_constraint_new(model->getMaxminSystem(), this, core * speedScale * xbt_dynar_get_as(speedPeak, pstate, double)),
138   speedPeak, pstate,
139   core, xbt_dynar_get_as(speedPeak, pstate, double), speedScale,
140     initiallyOn) {
141
142   XBT_DEBUG("CPU create: peak=%f, pstate=%d", m_speedPeak, m_pstate);
143
144   m_core = core;
145   if (speedTrace)
146     p_speedEvent = future_evt_set->add_trace(speedTrace, 0.0, this);
147
148   if (stateTrace)
149     p_stateEvent = future_evt_set->add_trace(stateTrace, 0.0, this);
150 }
151
152 CpuCas01::~CpuCas01()
153 {
154   if (getModel() == surf_cpu_model_pm)
155     xbt_dynar_free(&p_speedPeakList);
156 }
157
158 xbt_dynar_t CpuCas01::getSpeedPeakList(){
159   return p_speedPeakList;
160 }
161
162 bool CpuCas01::isUsed()
163 {
164   return lmm_constraint_used(getModel()->getMaxminSystem(), getConstraint());
165 }
166
167 /** @brief take into account changes of speed (either load or max) */
168 void CpuCas01::onSpeedChange() {
169   lmm_variable_t var = NULL;
170   lmm_element_t elem = NULL;
171
172     lmm_update_constraint_bound(getModel()->getMaxminSystem(), getConstraint(),
173                                 m_core * m_speedScale * m_speedPeak);
174     while ((var = lmm_get_var_from_cnst
175             (getModel()->getMaxminSystem(), getConstraint(), &elem))) {
176       CpuCas01Action *action = static_cast<CpuCas01Action*>(lmm_variable_id(var));
177
178       lmm_update_variable_bound(getModel()->getMaxminSystem(),
179                                 action->getVariable(),
180                                 m_speedScale * m_speedPeak);
181     }
182
183   Cpu::onSpeedChange();
184 }
185
186 void CpuCas01::updateState(tmgr_trace_iterator_t event_type, double value)
187 {
188   lmm_variable_t var = NULL;
189   lmm_element_t elem = NULL;
190
191   if (event_type == p_speedEvent) {
192     /* TODO (Hypervisor): do the same thing for constraint_core[i] */
193     xbt_assert(m_core == 1, "FIXME: add speed scaling code also for constraint_core[i]");
194
195     m_speedScale = value;
196     onSpeedChange();
197
198     tmgr_trace_event_unref(&p_speedEvent);
199   } else if (event_type == p_stateEvent) {
200     /* TODO (Hypervisor): do the same thing for constraint_core[i] */
201     xbt_assert(m_core == 1, "FIXME: add state change code also for constraint_core[i]");
202
203     if (value > 0) {
204       if(isOff())
205         xbt_dynar_push_as(host_that_restart, char*, (char *)getName());
206       turnOn();
207     } else {
208       lmm_constraint_t cnst = getConstraint();
209       double date = surf_get_clock();
210
211       turnOff();
212
213       while ((var = lmm_get_var_from_cnst(getModel()->getMaxminSystem(), cnst, &elem))) {
214         Action *action = static_cast<Action*>(lmm_variable_id(var));
215
216         if (action->getState() == SURF_ACTION_RUNNING ||
217             action->getState() == SURF_ACTION_READY ||
218             action->getState() == SURF_ACTION_NOT_IN_THE_SYSTEM) {
219           action->setFinishTime(date);
220           action->setState(SURF_ACTION_FAILED);
221         }
222       }
223     }
224     tmgr_trace_event_unref(&p_stateEvent);
225   } else {
226     xbt_die("Unknown event!\n");
227   }
228
229   return;
230 }
231
232 CpuAction *CpuCas01::execution_start(double size)
233 {
234
235   XBT_IN("(%s,%g)", getName(), size);
236   CpuCas01Action *action = new CpuCas01Action(getModel(), size, isOff(),
237       m_speedScale * m_speedPeak, getConstraint());
238
239   XBT_OUT();
240   return action;
241 }
242
243 CpuAction *CpuCas01::sleep(double duration)
244 {
245   if (duration > 0)
246     duration = MAX(duration, sg_surf_precision);
247
248   XBT_IN("(%s,%g)", getName(), duration);
249   CpuCas01Action *action = new CpuCas01Action(getModel(), 1.0, isOff(),
250       m_speedScale * m_speedPeak, getConstraint());
251
252
253   // FIXME: sleep variables should not consume 1.0 in lmm_expand
254   action->m_maxDuration = duration;
255   action->m_suspended = 2;
256   if (duration == NO_MAX_DURATION) {
257     /* Move to the *end* of the corresponding action set. This convention
258        is used to speed up update_resource_state  */
259     action->getStateSet()->erase(action->getStateSet()->iterator_to(*action));
260     action->p_stateSet = static_cast<CpuCas01Model*>(getModel())->p_cpuRunningActionSetThatDoesNotNeedBeingChecked;
261     action->getStateSet()->push_back(*action);
262   }
263
264   lmm_update_variable_weight(getModel()->getMaxminSystem(),
265       action->getVariable(), 0.0);
266   if (getModel()->getUpdateMechanism() == UM_LAZY) {     // remove action from the heap
267     action->heapRemove(getModel()->getActionHeap());
268     // this is necessary for a variable with weight 0 since such
269     // variables are ignored in lmm and we need to set its max_duration
270     // correctly at the next call to share_resources
271     getModel()->getModifiedSet()->push_front(*action);
272   }
273
274   XBT_OUT();
275   return action;
276 }
277
278 /**********
279  * Action *
280  **********/
281
282 CpuCas01Action::CpuCas01Action(Model *model, double cost, bool failed, double speed, lmm_constraint_t constraint)
283  : CpuAction(model, cost, failed,
284          lmm_variable_new(model->getMaxminSystem(), this,
285          1.0, speed, 1))
286 {
287   if (model->getUpdateMechanism() == UM_LAZY) {
288     m_indexHeap = -1;
289     m_lastUpdate = surf_get_clock();
290     m_lastValue = 0.0;
291   }
292   lmm_expand(model->getMaxminSystem(), constraint, getVariable(), 1.0);
293 }
294
295 }
296 }