Visitor to convert GLOBAL variables to RANGE variables. More...

Detailed Description

Visitor to convert GLOBAL variables to RANGE variables.

Some of the existing mod files have GLOBAL variables that are updated in BREAKPOINT or DERIVATIVE blocks. These variables have a single copy and works well when they are read only. If such variables are written as well, they result into race condition. For example,

NEURON {
   SUFFIX test
   GLOBAL x
}
 
ASSIGNED {
    x
}
 
BREAKPOINT {
    x = 1
}

In above example, x will be simultaneously updated in case of vectorization. In NEURON, such race condition is avoided by promoting these variables to thread variable (i.e. separate copy per thread). In case of CoreNEURON, this is not sufficient because of vectorisation or GPU execution. To address this issue, this visitor converts GLOBAL variables to RANGE variables when they are assigned / updated in compute functions.

Definition at line 61 of file global_var_visitor.hpp.

#include <global_var_visitor.hpp>

Inheritance diagram for nmodl::visitor::GlobalToRangeVisitor:

Public Member Functions
void	visit_neuron_block (ast::NeuronBlock &node) override
	Visit ast::NeuronBlock nodes to check if there is any GLOBAL variables defined in them that are written in any part of the code. More...

Ctor & dtor
	GlobalToRangeVisitor ()=delete
	Default constructor. More...

	GlobalToRangeVisitor (const ast::Program &node)
	Constructor that takes as parameter the AST. More...

Public Member Functions inherited from nmodl::visitor::AstVisitor
void	visit_node (ast::Node &node) override
	visit node of type ast::Node More...

void	visit_statement (ast::Statement &node) override
	visit node of type ast::Statement More...

void	visit_expression (ast::Expression &node) override
	visit node of type ast::Expression More...

void	visit_block (ast::Block &node) override
	visit node of type ast::Block More...

void	visit_identifier (ast::Identifier &node) override
	visit node of type ast::Identifier More...

void	visit_number (ast::Number &node) override
	visit node of type ast::Number More...

void	visit_string (ast::String &node) override
	visit node of type ast::String More...

void	visit_integer (ast::Integer &node) override
	visit node of type ast::Integer More...

void	visit_float (ast::Float &node) override
	visit node of type ast::Float More...

void	visit_double (ast::Double &node) override
	visit node of type ast::Double More...

void	visit_boolean (ast::Boolean &node) override
	visit node of type ast::Boolean More...

void	visit_name (ast::Name &node) override
	visit node of type ast::Name More...

void	visit_prime_name (ast::PrimeName &node) override
	visit node of type ast::PrimeName More...

void	visit_indexed_name (ast::IndexedName &node) override
	visit node of type ast::IndexedName More...

void	visit_var_name (ast::VarName &node) override
	visit node of type ast::VarName More...

void	visit_argument (ast::Argument &node) override
	visit node of type ast::Argument More...

void	visit_react_var_name (ast::ReactVarName &node) override
	visit node of type ast::ReactVarName More...

void	visit_read_ion_var (ast::ReadIonVar &node) override
	visit node of type ast::ReadIonVar More...

void	visit_write_ion_var (ast::WriteIonVar &node) override
	visit node of type ast::WriteIonVar More...

void	visit_nonspecific_cur_var (ast::NonspecificCurVar &node) override
	visit node of type ast::NonspecificCurVar More...

void	visit_electrode_cur_var (ast::ElectrodeCurVar &node) override
	visit node of type ast::ElectrodeCurVar More...

void	visit_range_var (ast::RangeVar &node) override
	visit node of type ast::RangeVar More...

void	visit_global_var (ast::GlobalVar &node) override
	visit node of type ast::GlobalVar More...

void	visit_pointer_var (ast::PointerVar &node) override
	visit node of type ast::PointerVar More...

void	visit_random_var (ast::RandomVar &node) override
	visit node of type ast::RandomVar More...

void	visit_bbcore_pointer_var (ast::BbcorePointerVar &node) override
	visit node of type ast::BbcorePointerVar More...

void	visit_extern_var (ast::ExternVar &node) override
	visit node of type ast::ExternVar More...

void	visit_param_block (ast::ParamBlock &node) override
	visit node of type ast::ParamBlock More...

void	visit_independent_block (ast::IndependentBlock &node) override
	visit node of type ast::IndependentBlock More...

void	visit_assigned_block (ast::AssignedBlock &node) override
	visit node of type ast::AssignedBlock More...

void	visit_state_block (ast::StateBlock &node) override
	visit node of type ast::StateBlock More...

void	visit_initial_block (ast::InitialBlock &node) override
	visit node of type ast::InitialBlock More...

void	visit_constructor_block (ast::ConstructorBlock &node) override
	visit node of type ast::ConstructorBlock More...

void	visit_destructor_block (ast::DestructorBlock &node) override
	visit node of type ast::DestructorBlock More...

void	visit_statement_block (ast::StatementBlock &node) override
	visit node of type ast::StatementBlock More...

void	visit_derivative_block (ast::DerivativeBlock &node) override
	visit node of type ast::DerivativeBlock More...

void	visit_linear_block (ast::LinearBlock &node) override
	visit node of type ast::LinearBlock More...

void	visit_non_linear_block (ast::NonLinearBlock &node) override
	visit node of type ast::NonLinearBlock More...

void	visit_discrete_block (ast::DiscreteBlock &node) override
	visit node of type ast::DiscreteBlock More...

void	visit_function_table_block (ast::FunctionTableBlock &node) override
	visit node of type ast::FunctionTableBlock More...

void	visit_function_block (ast::FunctionBlock &node) override
	visit node of type ast::FunctionBlock More...

void	visit_procedure_block (ast::ProcedureBlock &node) override
	visit node of type ast::ProcedureBlock More...

void	visit_net_receive_block (ast::NetReceiveBlock &node) override
	visit node of type ast::NetReceiveBlock More...

void	visit_solve_block (ast::SolveBlock &node) override
	visit node of type ast::SolveBlock More...

void	visit_breakpoint_block (ast::BreakpointBlock &node) override
	visit node of type ast::BreakpointBlock More...

void	visit_before_block (ast::BeforeBlock &node) override
	visit node of type ast::BeforeBlock More...

void	visit_after_block (ast::AfterBlock &node) override
	visit node of type ast::AfterBlock More...

void	visit_ba_block (ast::BABlock &node) override
	visit node of type ast::BABlock More...

void	visit_for_netcon (ast::ForNetcon &node) override
	visit node of type ast::ForNetcon More...

void	visit_kinetic_block (ast::KineticBlock &node) override
	visit node of type ast::KineticBlock More...

void	visit_unit_block (ast::UnitBlock &node) override
	visit node of type ast::UnitBlock More...

void	visit_constant_block (ast::ConstantBlock &node) override
	visit node of type ast::ConstantBlock More...

void	visit_neuron_block (ast::NeuronBlock &node) override
	visit node of type ast::NeuronBlock More...

void	visit_unit (ast::Unit &node) override
	visit node of type ast::Unit More...

void	visit_double_unit (ast::DoubleUnit &node) override
	visit node of type ast::DoubleUnit More...

void	visit_local_var (ast::LocalVar &node) override
	visit node of type ast::LocalVar More...

void	visit_limits (ast::Limits &node) override
	visit node of type ast::Limits More...

void	visit_number_range (ast::NumberRange &node) override
	visit node of type ast::NumberRange More...

void	visit_constant_var (ast::ConstantVar &node) override
	visit node of type ast::ConstantVar More...

void	visit_binary_operator (ast::BinaryOperator &node) override
	visit node of type ast::BinaryOperator More...

void	visit_unary_operator (ast::UnaryOperator &node) override
	visit node of type ast::UnaryOperator More...

void	visit_reaction_operator (ast::ReactionOperator &node) override
	visit node of type ast::ReactionOperator More...

void	visit_paren_expression (ast::ParenExpression &node) override
	visit node of type ast::ParenExpression More...

void	visit_binary_expression (ast::BinaryExpression &node) override
	visit node of type ast::BinaryExpression More...

void	visit_diff_eq_expression (ast::DiffEqExpression &node) override
	visit node of type ast::DiffEqExpression More...

void	visit_unary_expression (ast::UnaryExpression &node) override
	visit node of type ast::UnaryExpression More...

void	visit_non_lin_equation (ast::NonLinEquation &node) override
	visit node of type ast::NonLinEquation More...

void	visit_lin_equation (ast::LinEquation &node) override
	visit node of type ast::LinEquation More...

void	visit_function_call (ast::FunctionCall &node) override
	visit node of type ast::FunctionCall More...

void	visit_watch (ast::Watch &node) override
	visit node of type ast::Watch More...

void	visit_ba_block_type (ast::BABlockType &node) override
	visit node of type ast::BABlockType More...

void	visit_unit_def (ast::UnitDef &node) override
	visit node of type ast::UnitDef More...

void	visit_factor_def (ast::FactorDef &node) override
	visit node of type ast::FactorDef More...

void	visit_valence (ast::Valence &node) override
	visit node of type ast::Valence More...

void	visit_unit_state (ast::UnitState &node) override
	visit node of type ast::UnitState More...

void	visit_local_list_statement (ast::LocalListStatement &node) override
	visit node of type ast::LocalListStatement More...

void	visit_model (ast::Model &node) override
	visit node of type ast::Model More...

void	visit_define (ast::Define &node) override
	visit node of type ast::Define More...

void	visit_include (ast::Include &node) override
	visit node of type ast::Include More...

void	visit_param_assign (ast::ParamAssign &node) override
	visit node of type ast::ParamAssign More...

void	visit_assigned_definition (ast::AssignedDefinition &node) override
	visit node of type ast::AssignedDefinition More...

void	visit_conductance_hint (ast::ConductanceHint &node) override
	visit node of type ast::ConductanceHint More...

void	visit_expression_statement (ast::ExpressionStatement &node) override
	visit node of type ast::ExpressionStatement More...

void	visit_protect_statement (ast::ProtectStatement &node) override
	visit node of type ast::ProtectStatement More...

void	visit_from_statement (ast::FromStatement &node) override
	visit node of type ast::FromStatement More...

void	visit_while_statement (ast::WhileStatement &node) override
	visit node of type ast::WhileStatement More...

void	visit_if_statement (ast::IfStatement &node) override
	visit node of type ast::IfStatement More...

void	visit_else_if_statement (ast::ElseIfStatement &node) override
	visit node of type ast::ElseIfStatement More...

void	visit_else_statement (ast::ElseStatement &node) override
	visit node of type ast::ElseStatement More...

void	visit_watch_statement (ast::WatchStatement &node) override
	visit node of type ast::WatchStatement More...

void	visit_mutex_lock (ast::MutexLock &node) override
	visit node of type ast::MutexLock More...

void	visit_mutex_unlock (ast::MutexUnlock &node) override
	visit node of type ast::MutexUnlock More...

void	visit_conserve (ast::Conserve &node) override
	visit node of type ast::Conserve More...

void	visit_compartment (ast::Compartment &node) override
	visit node of type ast::Compartment More...

void	visit_lon_diffuse (ast::LonDiffuse &node) override
	visit node of type ast::LonDiffuse More...

void	visit_reaction_statement (ast::ReactionStatement &node) override
	visit node of type ast::ReactionStatement More...

void	visit_lag_statement (ast::LagStatement &node) override
	visit node of type ast::LagStatement More...

void	visit_constant_statement (ast::ConstantStatement &node) override
	visit node of type ast::ConstantStatement More...

void	visit_table_statement (ast::TableStatement &node) override
	visit node of type ast::TableStatement More...

void	visit_suffix (ast::Suffix &node) override
	visit node of type ast::Suffix More...

void	visit_useion (ast::Useion &node) override
	visit node of type ast::Useion More...

void	visit_nonspecific (ast::Nonspecific &node) override
	visit node of type ast::Nonspecific More...

void	visit_electrode_current (ast::ElectrodeCurrent &node) override
	visit node of type ast::ElectrodeCurrent More...

void	visit_range (ast::Range &node) override
	visit node of type ast::Range More...

void	visit_global (ast::Global &node) override
	visit node of type ast::Global More...

void	visit_random_var_list (ast::RandomVarList &node) override
	visit node of type ast::RandomVarList More...

void	visit_pointer (ast::Pointer &node) override
	visit node of type ast::Pointer More...

void	visit_bbcore_pointer (ast::BbcorePointer &node) override
	visit node of type ast::BbcorePointer More...

void	visit_external (ast::External &node) override
	visit node of type ast::External More...

void	visit_thread_safe (ast::ThreadSafe &node) override
	visit node of type ast::ThreadSafe More...

void	visit_verbatim (ast::Verbatim &node) override
	visit node of type ast::Verbatim More...

void	visit_line_comment (ast::LineComment &node) override
	visit node of type ast::LineComment More...

void	visit_block_comment (ast::BlockComment &node) override
	visit node of type ast::BlockComment More...

void	visit_ontology_statement (ast::OntologyStatement &node) override
	visit node of type ast::OntologyStatement More...

void	visit_program (ast::Program &node) override
	visit node of type ast::Program More...

void	visit_nrn_state_block (ast::NrnStateBlock &node) override
	visit node of type ast::NrnStateBlock More...

void	visit_eigen_newton_solver_block (ast::EigenNewtonSolverBlock &node) override
	visit node of type ast::EigenNewtonSolverBlock More...

void	visit_eigen_linear_solver_block (ast::EigenLinearSolverBlock &node) override
	visit node of type ast::EigenLinearSolverBlock More...

void	visit_cvode_block (ast::CvodeBlock &node) override
	visit node of type ast::CvodeBlock More...

void	visit_longitudinal_diffusion_block (ast::LongitudinalDiffusionBlock &node) override
	visit node of type ast::LongitudinalDiffusionBlock More...

void	visit_wrapped_expression (ast::WrappedExpression &node) override
	visit node of type ast::WrappedExpression More...

void	visit_derivimplicit_callback (ast::DerivimplicitCallback &node) override
	visit node of type ast::DerivimplicitCallback More...

void	visit_solution_expression (ast::SolutionExpression &node) override
	visit node of type ast::SolutionExpression More...

void	visit_update_dt (ast::UpdateDt &node) override
	visit node of type ast::UpdateDt More...

Public Member Functions inherited from nmodl::visitor::Visitor
virtual	~Visitor ()=default

Private Attributes
const ast::Program &	ast
	ast::Ast* node More...

Constructor & Destructor Documentation

◆ GlobalToRangeVisitor() [1/2]

nmodl::visitor::GlobalToRangeVisitor::GlobalToRangeVisitor ( )

delete

Default constructor.

◆ GlobalToRangeVisitor() [2/2]

nmodl::visitor::GlobalToRangeVisitor::GlobalToRangeVisitor ( const ast::Program & node )

inlineexplicit

Constructor that takes as parameter the AST.

Definition at line 74 of file global_var_visitor.hpp.

Member Function Documentation

◆ visit_neuron_block()

void nmodl::visitor::GlobalToRangeVisitor::visit_neuron_block ( ast::NeuronBlock & node )

overridevirtual

Visit ast::NeuronBlock nodes to check if there is any GLOBAL variables defined in them that are written in any part of the code.

This is checked by reading the write_count member of the variable in the symtab::SymbolTable. If it's written it removes the variable from the ast::Global node and adds it to the ast::Range node of the ast::NeuronBlock

only process global statements

check if global variable is being updated in the mod file

remove offending global variables

add empty global statements to global_statements_to_remove

remove offending global statements if empty

insert new range variables replacing global ones

Implements nmodl::visitor::Visitor.

Definition at line 23 of file global_var_visitor.cpp.

Member Data Documentation

◆ ast

const ast::Program& nmodl::visitor::GlobalToRangeVisitor::ast

private

ast::Ast* node

Definition at line 64 of file global_var_visitor.hpp.

The documentation for this class was generated from the following files:

/home/runner/work/nmodl/nmodl/src/visitors/global_var_visitor.hpp
/home/runner/work/nmodl/nmodl/src/visitors/global_var_visitor.cpp