1 /* Copyright (c) 2007-2018. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #ifndef SIMGRID_MC_STATE_HPP
7 #define SIMGRID_MC_STATE_HPP
12 #include "src/mc/mc_record.hpp"
13 #include "src/mc/sosp/mc_snapshot.hpp"
15 #include "src/kernel/activity/CommImpl.hpp"
16 #include "src/mc/Transition.hpp"
21 enum class PatternCommunicationType {
27 class PatternCommunication {
30 simgrid::kernel::activity::CommImpl* comm_addr;
31 PatternCommunicationType type = PatternCommunicationType::send;
32 unsigned long src_proc = 0;
33 unsigned long dst_proc = 0;
34 const char* src_host = nullptr;
35 const char* dst_host = nullptr;
37 std::vector<char> data;
41 PatternCommunication() { std::memset(&comm_addr, 0, sizeof(comm_addr)); }
43 PatternCommunication dup() const
45 simgrid::mc::PatternCommunication res;
47 res.comm_addr = this->comm_addr;
48 res.type = this->type;
51 res.dst_proc = this->dst_proc;
52 res.dst_host = this->dst_host;
54 res.data = this->data;
56 res.index = this->index;
61 /* On every state, each process has an entry of the following type.
62 * This represents both the process and its transition because
63 * a process cannot have more than one enabled transition at a given time.
66 /* Possible exploration status of a process transition in a state.
67 * Either the checker did not consider the transition, or it was considered and to do, or considered and done.
69 enum class InterleavingType {
70 /** This process transition is not considered by the checker (yet?) */
72 /** The checker algorithm decided that this process transitions should be done at some point */
74 /** The checker algorithm decided that this should be done, but it was done in the meanwhile */
78 /** Exploration control information */
79 InterleavingType state = InterleavingType::disabled;
82 /** Number of times that the process was considered to be executed */
83 // TODO, make this private
84 unsigned int times_considered = 0;
86 bool isDisabled() const { return this->state == InterleavingType::disabled; }
87 bool isDone() const { return this->state == InterleavingType::done; }
88 bool isTodo() const { return this->state == InterleavingType::todo; }
89 /** Mark that we should try executing this process at some point in the future of the checker algorithm */
92 this->state = InterleavingType::todo;
93 this->times_considered = 0;
95 void setDone() { this->state = InterleavingType::done; }
98 /* A node in the exploration graph (kind-of)
100 class XBT_PRIVATE State {
102 /** Sequential state number (used for debugging) */
105 /** State's exploration status by process */
106 std::vector<ProcessState> actorStates;
108 Transition transition;
110 /** The simcall which was executed, going out of that state */
111 s_smx_simcall executed_req;
113 /* Internal translation of the executed_req simcall
115 * SIMCALL_COMM_TESTANY is translated to a SIMCALL_COMM_TEST
116 * and SIMCALL_COMM_WAITANY to a SIMCALL_COMM_WAIT.
118 s_smx_simcall internal_req;
120 /* Can be used as a copy of the remote synchro object */
121 simgrid::mc::Remote<simgrid::kernel::activity::CommImpl> internal_comm;
123 /** Snapshot of system state (if needed) */
124 std::shared_ptr<simgrid::mc::Snapshot> system_state;
126 // For CommunicationDeterminismChecker
127 std::vector<std::vector<simgrid::mc::PatternCommunication>> incomplete_comm_pattern;
128 std::vector<unsigned> communicationIndices;
130 explicit State(unsigned long state_number);
132 std::size_t interleaveSize() const;
133 void addInterleavingSet(smx_actor_t actor) { this->actorStates[actor->pid_].consider(); }
134 Transition getTransition() const;
139 XBT_PRIVATE smx_simcall_t MC_state_get_request(simgrid::mc::State* state);