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118 lines
3.3 KiB
C++
118 lines
3.3 KiB
C++
/* Inferior iterators and ranges for GDB, the GNU debugger.
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Copyright (C) 2018-2020 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef INFERIOR_ITER_H
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#define INFERIOR_ITER_H
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#include "gdbsupport/filtered-iterator.h"
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#include "gdbsupport/safe-iterator.h"
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/* A forward iterator that iterates over all inferiors. */
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class all_inferiors_iterator
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{
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public:
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typedef all_inferiors_iterator self_type;
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typedef struct inferior *value_type;
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typedef struct inferior *&reference;
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typedef struct inferior **pointer;
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typedef std::forward_iterator_tag iterator_category;
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typedef int difference_type;
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/* Create an iterator pointing at HEAD. */
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explicit all_inferiors_iterator (inferior *head)
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: m_inf (head)
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{}
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/* Create a one-past-end iterator. */
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all_inferiors_iterator ()
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: m_inf (nullptr)
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{}
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all_inferiors_iterator &operator++ ()
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{
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m_inf = m_inf->next;
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return *this;
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}
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inferior *operator* () const
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{ return m_inf; }
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bool operator!= (const all_inferiors_iterator &other) const
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{ return m_inf != other.m_inf; }
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private:
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inferior *m_inf;
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};
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/* Filter for filtered_iterator. Filters out exited inferiors. */
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struct exited_inferior_filter
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{
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bool operator() (inferior *inf)
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{
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return inf->pid != 0;
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}
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};
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/* Iterate over all non-exited inferiors. */
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using all_non_exited_inferiors_iterator
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= filtered_iterator<all_inferiors_iterator, exited_inferior_filter>;
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/* A range adapter that makes it possible to iterate over all
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inferiors with range-for. */
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struct all_inferiors_range
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{
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all_inferiors_iterator begin () const
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{ return all_inferiors_iterator (inferior_list); }
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all_inferiors_iterator end () const
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{ return all_inferiors_iterator (); }
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};
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/* Iterate over all inferiors, safely. */
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using all_inferiors_safe_iterator
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= basic_safe_iterator<all_inferiors_iterator>;
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/* A range adapter that makes it possible to iterate over all
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inferiors with range-for "safely". I.e., it is safe to delete the
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currently-iterated inferior. */
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struct all_inferiors_safe_range
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{
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all_inferiors_safe_iterator begin () const
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{ return all_inferiors_safe_iterator (inferior_list); }
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all_inferiors_safe_iterator end () const
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{ return all_inferiors_safe_iterator (); }
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};
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/* A range adapter that makes it possible to iterate over all
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non-exited inferiors with range-for. */
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struct all_non_exited_inferiors_range
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{
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all_non_exited_inferiors_iterator begin () const
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{ return all_non_exited_inferiors_iterator (inferior_list); }
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all_non_exited_inferiors_iterator end () const
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{ return all_non_exited_inferiors_iterator (); }
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};
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#endif /* !defined (INFERIOR_ITER_H) */
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