1 /* Copyright (c) 2007-2015. 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 #ifndef SIMGRID_MC_STATE_H
8 #define SIMGRID_MC_STATE_H
14 #include <xbt/dynar.h>
16 #include <simgrid_config.h>
17 #include "src/simix/smx_private.h"
18 #include "src/mc/mc_snapshot.h"
19 #include "src/mc/mc_record.h"
20 #include "src/mc/Transition.hpp"
25 extern XBT_PRIVATE std::unique_ptr<s_mc_global_t> initial_global_state;
27 struct PatternCommunication {
29 smx_synchro_t comm_addr;
30 e_smx_comm_type_t type = SIMIX_COMM_SEND;
31 unsigned long src_proc = 0;
32 unsigned long dst_proc = 0;
33 const char *src_host = nullptr;
34 const char *dst_host = nullptr;
36 std::vector<char> data;
40 PatternCommunication()
42 std::memset(&comm_addr, 0, sizeof(comm_addr));
45 PatternCommunication dup() const
47 simgrid::mc::PatternCommunication res;
49 res.comm_addr = this->comm_addr;
50 res.type = this->type;
53 res.dst_proc = this->dst_proc;
54 res.dst_host = this->dst_host;
56 res.data = this->data;
58 res.index = this->index;
64 /* On every state, each process has an entry of the following type */
66 /* Possible exploration status of a process in a state */
67 enum class InterleavingType {
68 /** We do not have to execute this process transitions */
70 /** We still have to execute (some of) this process transitions */
72 /** We have already executed this process transitions */
76 /** Exploration control information */
77 InterleavingType state = InterleavingType::disabled;
80 /** Number of times that the process was interleaved */
81 // TODO, make this private
82 unsigned int interleave_count = 0;
84 bool isDisabled() const
86 return this->state == InterleavingType::disabled;
90 return this->state == InterleavingType::done;
92 bool isToInterleave() const
94 return this->state == InterleavingType::interleave;
98 this->state = InterleavingType::interleave;
99 this->interleave_count = 0;
103 this->state = InterleavingType::done;
107 /* A node in the exploration graph (kind-of)
109 struct XBT_PRIVATE State {
111 /** Sequential state number (used for debugging) */
114 /** State's exploration status by process */
115 std::vector<ProcessState> processStates;
117 Transition transition;
119 /** The simcall which was executed */
120 s_smx_simcall_t executed_req;
122 /* Internal translation of the simcall
124 * SIMCALL_COMM_TESTANY is translated to a SIMCALL_COMM_TEST
125 * and SIMCALL_COMM_WAITANY to a SIMCALL_COMM_WAIT.
127 s_smx_simcall_t internal_req;
129 /* Can be used as a copy of the remote synchro object */
130 s_smx_synchro_t internal_comm;
132 /** Snapshot of system state (if needed) */
133 std::shared_ptr<simgrid::mc::Snapshot> system_state;
135 // For CommunicationDeterminismChecker
136 std::vector<std::vector<simgrid::mc::PatternCommunication>> incomplete_comm_pattern;
137 std::vector<unsigned> communicationIndices;
141 std::size_t interleaveSize() const;
142 void interleave(smx_process_t process)
144 this->processStates[process->pid].interleave();
146 Transition getTransition() const;
149 XBT_PRIVATE void replay(std::list<std::unique_ptr<simgrid::mc::State>> const& stack);
154 XBT_PRIVATE simgrid::mc::State* MC_state_new(unsigned long state_number);
155 XBT_PRIVATE smx_simcall_t MC_state_get_request(simgrid::mc::State* state);