257 lines
7.0 KiB
C++
257 lines
7.0 KiB
C++
/* Thread iterators and ranges for GDB, the GNU debugger.
|
|
Copyright (C) 2018-2019 Free Software Foundation, Inc.
|
|
|
|
This file is part of GDB.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef THREAD_ITER_H
|
|
#define THREAD_ITER_H
|
|
|
|
#include "common/filtered-iterator.h"
|
|
#include "common/next-iterator.h"
|
|
#include "common/safe-iterator.h"
|
|
|
|
/* A forward iterator that iterates over a given inferior's
|
|
threads. */
|
|
|
|
using inf_threads_iterator = next_iterator<thread_info>;
|
|
|
|
/* A forward iterator that iterates over all threads of all
|
|
inferiors. */
|
|
|
|
class all_threads_iterator
|
|
{
|
|
public:
|
|
typedef all_threads_iterator self_type;
|
|
typedef struct thread_info *value_type;
|
|
typedef struct thread_info *&reference;
|
|
typedef struct thread_info **pointer;
|
|
typedef std::forward_iterator_tag iterator_category;
|
|
typedef int difference_type;
|
|
|
|
/* Tag type. */
|
|
struct begin_t {};
|
|
|
|
/* Create an iterator that points to the first thread of the first
|
|
inferior. */
|
|
explicit all_threads_iterator (begin_t);
|
|
|
|
/* Create a one-past-end iterator. */
|
|
all_threads_iterator ()
|
|
: m_thr (nullptr)
|
|
{}
|
|
|
|
thread_info *operator* () const { return m_thr; }
|
|
|
|
all_threads_iterator &operator++ ()
|
|
{
|
|
advance ();
|
|
return *this;
|
|
}
|
|
|
|
bool operator== (const all_threads_iterator &other) const
|
|
{ return m_thr == other.m_thr; }
|
|
|
|
bool operator!= (const all_threads_iterator &other) const
|
|
{ return m_thr != other.m_thr; }
|
|
|
|
private:
|
|
/* Advance to the next thread. */
|
|
void advance ();
|
|
|
|
private:
|
|
/* The current inferior and thread. M_THR is NULL if we reached the
|
|
end of the threads list of the last inferior. */
|
|
inferior *m_inf;
|
|
thread_info *m_thr;
|
|
};
|
|
|
|
/* Iterate over all threads that match a given PTID. */
|
|
|
|
class all_matching_threads_iterator
|
|
{
|
|
public:
|
|
typedef all_matching_threads_iterator self_type;
|
|
typedef struct thread_info *value_type;
|
|
typedef struct thread_info *&reference;
|
|
typedef struct thread_info **pointer;
|
|
typedef std::forward_iterator_tag iterator_category;
|
|
typedef int difference_type;
|
|
|
|
/* Creates an iterator that iterates over all threads that match
|
|
FILTER_PTID. */
|
|
explicit all_matching_threads_iterator (ptid_t filter_ptid);
|
|
|
|
/* Create a one-past-end iterator. */
|
|
all_matching_threads_iterator ()
|
|
: m_inf (nullptr),
|
|
m_thr (nullptr),
|
|
m_filter_ptid (minus_one_ptid)
|
|
{}
|
|
|
|
thread_info *operator* () const { return m_thr; }
|
|
|
|
all_matching_threads_iterator &operator++ ()
|
|
{
|
|
advance ();
|
|
return *this;
|
|
}
|
|
|
|
bool operator== (const all_matching_threads_iterator &other) const
|
|
{ return m_thr == other.m_thr; }
|
|
|
|
bool operator!= (const all_matching_threads_iterator &other) const
|
|
{ return m_thr != other.m_thr; }
|
|
|
|
private:
|
|
/* Advance to next thread, skipping filtered threads. */
|
|
void advance ();
|
|
|
|
/* True if M_INF matches the process identified by
|
|
M_FILTER_PTID. */
|
|
bool m_inf_matches ();
|
|
|
|
private:
|
|
/* The current inferior. */
|
|
inferior *m_inf;
|
|
|
|
/* The current thread. */
|
|
thread_info *m_thr;
|
|
|
|
/* The filter. */
|
|
ptid_t m_filter_ptid;
|
|
};
|
|
|
|
/* Filter for filtered_iterator. Filters out exited threads. */
|
|
|
|
struct non_exited_thread_filter
|
|
{
|
|
bool operator() (struct thread_info *thr) const
|
|
{
|
|
return thr->state != THREAD_EXITED;
|
|
}
|
|
};
|
|
|
|
/* Iterate over all non-exited threads that match a given PTID. */
|
|
|
|
using all_non_exited_threads_iterator
|
|
= filtered_iterator<all_matching_threads_iterator, non_exited_thread_filter>;
|
|
|
|
/* Iterate over all non-exited threads of an inferior. */
|
|
|
|
using inf_non_exited_threads_iterator
|
|
= filtered_iterator<inf_threads_iterator, non_exited_thread_filter>;
|
|
|
|
/* Iterate over all threads of all inferiors, safely. */
|
|
|
|
using all_threads_safe_iterator
|
|
= basic_safe_iterator<all_threads_iterator>;
|
|
|
|
/* Iterate over all threads of an inferior, safely. */
|
|
|
|
using safe_inf_threads_iterator
|
|
= basic_safe_iterator<inf_threads_iterator>;
|
|
|
|
/* A range adapter that makes it possible to iterate over all threads
|
|
of an inferior with range-for. */
|
|
|
|
using inf_threads_range
|
|
= next_adapter<thread_info, inf_threads_iterator>;
|
|
|
|
/* A range adapter that makes it possible to iterate over all
|
|
non-exited threads of an inferior with range-for. */
|
|
|
|
using inf_non_exited_threads_range
|
|
= next_adapter<thread_info, inf_non_exited_threads_iterator>;
|
|
|
|
/* A range adapter that makes it possible to iterate over all threads
|
|
of an inferior with range-for, safely. */
|
|
|
|
using safe_inf_threads_range
|
|
= next_adapter<thread_info, safe_inf_threads_iterator>;
|
|
|
|
/* A range adapter that makes it possible to iterate over all threads
|
|
of all inferiors with range-for. */
|
|
|
|
struct all_threads_range
|
|
{
|
|
all_threads_iterator begin () const
|
|
{ return all_threads_iterator (all_threads_iterator::begin_t {}); }
|
|
all_threads_iterator end () const
|
|
{ return all_threads_iterator (); }
|
|
};
|
|
|
|
/* A range adapter that makes it possible to iterate over all threads
|
|
with range-for "safely". I.e., it is safe to delete the
|
|
currently-iterated thread. */
|
|
|
|
struct all_threads_safe_range
|
|
{
|
|
all_threads_safe_iterator begin () const
|
|
{ return all_threads_safe_iterator (all_threads_iterator::begin_t {}); }
|
|
all_threads_safe_iterator end () const
|
|
{ return all_threads_safe_iterator (); }
|
|
};
|
|
|
|
/* A range adapter that makes it possible to iterate over all threads
|
|
that match a PTID filter with range-for. */
|
|
|
|
struct all_matching_threads_range
|
|
{
|
|
public:
|
|
explicit all_matching_threads_range (ptid_t filter_ptid)
|
|
: m_filter_ptid (filter_ptid)
|
|
{}
|
|
all_matching_threads_range ()
|
|
: m_filter_ptid (minus_one_ptid)
|
|
{}
|
|
|
|
all_matching_threads_iterator begin () const
|
|
{ return all_matching_threads_iterator (m_filter_ptid); }
|
|
all_matching_threads_iterator end () const
|
|
{ return all_matching_threads_iterator (); }
|
|
|
|
private:
|
|
/* The filter. */
|
|
ptid_t m_filter_ptid;
|
|
};
|
|
|
|
/* A range adapter that makes it possible to iterate over all
|
|
non-exited threads of all inferiors, with range-for.
|
|
Threads/inferiors that do not match FILTER_PTID are filtered
|
|
out. */
|
|
|
|
class all_non_exited_threads_range
|
|
{
|
|
public:
|
|
explicit all_non_exited_threads_range (ptid_t filter_ptid)
|
|
: m_filter_ptid (filter_ptid)
|
|
{}
|
|
|
|
all_non_exited_threads_range ()
|
|
: m_filter_ptid (minus_one_ptid)
|
|
{}
|
|
|
|
all_non_exited_threads_iterator begin () const
|
|
{ return all_non_exited_threads_iterator (m_filter_ptid); }
|
|
all_non_exited_threads_iterator end () const
|
|
{ return all_non_exited_threads_iterator (); }
|
|
|
|
private:
|
|
ptid_t m_filter_ptid;
|
|
};
|
|
|
|
#endif /* THREAD_ITER_H */
|