Multi-target support

[deliverable/binutils-gdb.git] / gdb / thread-iter.h

diff --git a/gdb/thread-iter.h b/gdb/thread-iter.h
index a1145d4938a2eecbf3f04fb6ec6c227d40f3b519..95dc562436813db4ae939bf7458f1a96c3ad3ad7 100644 (file)
--- a/gdb/thread-iter.h
+++ b/gdb/thread-iter.h
@@ -1,5 +1,5 @@
 /* Thread iterators and ranges for GDB, the GNU debugger.
-   Copyright (C) 2018-2019 Free Software Foundation, Inc.
+   Copyright (C) 2018-2020 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -19,69 +19,14 @@
 #ifndef THREAD_ITER_H
 #define THREAD_ITER_H
 
-#include "common/filtered-iterator.h"
-#include "common/safe-iterator.h"
+#include "gdbsupport/filtered-iterator.h"
+#include "gdbsupport/next-iterator.h"
+#include "gdbsupport/safe-iterator.h"
 
 /* A forward iterator that iterates over a given inferior's
    threads.  */
 
-class inf_threads_iterator
-{
-public:
-  typedef inf_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;
-
-  /* Create an iterator pointing at HEAD.  This takes a thread pointer
-     instead of an inferior pointer to avoid circular dependencies
-     between the thread and inferior header files.  */
-  explicit inf_threads_iterator (struct thread_info *head)
-    : m_thr (head)
-  {}
-
-  /* Create a one-past-end iterator.  */
-  inf_threads_iterator ()
-    : m_thr (nullptr)
-  {}
-
-  inf_threads_iterator& operator++ ()
-  {
-    m_thr = m_thr->next;
-    return *this;
-  }
-
-  thread_info *operator* () const { return m_thr; }
-
-  bool operator!= (const inf_threads_iterator &other) const
-  { return m_thr != other.m_thr; }
-
-private:
-  /* The currently-iterated thread.  NULL if we reached the end of the
-     list.  */
-  thread_info *m_thr;
-};
-
-/* A range adapter that makes it possible to iterate over an
-   inferior's thread list with range-for.  */
-template<typename Iterator>
-struct basic_inf_threads_range
-{
-  friend struct inferior;
-private:
-  explicit basic_inf_threads_range (struct thread_info *head)
-    : m_head (head)
-  {}
-
-public:
-  Iterator begin () const { return Iterator (m_head); }
-  Iterator end () const { return Iterator (); }
-
-private:
-  thread_info *m_head;
-};
+using inf_threads_iterator = next_iterator<thread_info>;
 
 /* A forward iterator that iterates over all threads of all
    inferiors.  */
@@ -147,12 +92,14 @@ public:
 
   /* Creates an iterator that iterates over all threads that match
      FILTER_PTID.  */
-  explicit all_matching_threads_iterator (ptid_t filter_ptid);
+  all_matching_threads_iterator (process_stratum_target *filter_target,
+                                ptid_t filter_ptid);
 
   /* Create a one-past-end iterator.  */
   all_matching_threads_iterator ()
     : m_inf (nullptr),
       m_thr (nullptr),
+      m_filter_target (nullptr),
       m_filter_ptid (minus_one_ptid)
   {}
 
@@ -186,6 +133,7 @@ private:
   thread_info *m_thr;
 
   /* The filter.  */
+  process_stratum_target *m_filter_target;
   ptid_t m_filter_ptid;
 };
 
@@ -223,19 +171,19 @@ using safe_inf_threads_iterator
    of an inferior with range-for.  */
 
 using inf_threads_range
-  = basic_inf_threads_range<inf_threads_iterator>;
+  = 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
-  = basic_inf_threads_range<inf_non_exited_threads_iterator>;
+  = 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
-  = basic_inf_threads_range<safe_inf_threads_iterator>;
+  = 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.  */
@@ -266,20 +214,22 @@ struct all_threads_safe_range
 struct all_matching_threads_range
 {
 public:
-  explicit all_matching_threads_range (ptid_t filter_ptid)
-    : m_filter_ptid (filter_ptid)
+  all_matching_threads_range (process_stratum_target *filter_target,
+                             ptid_t filter_ptid)
+    : m_filter_target (filter_target), m_filter_ptid (filter_ptid)
   {}
   all_matching_threads_range ()
-    : m_filter_ptid (minus_one_ptid)
+    : m_filter_target (nullptr), m_filter_ptid (minus_one_ptid)
   {}
 
   all_matching_threads_iterator begin () const
-  { return all_matching_threads_iterator (m_filter_ptid); }
+  { return all_matching_threads_iterator (m_filter_target, m_filter_ptid); }
   all_matching_threads_iterator end () const
   { return all_matching_threads_iterator (); }
 
 private:
   /* The filter.  */
+  process_stratum_target *m_filter_target;
   ptid_t m_filter_ptid;
 };
 
@@ -291,20 +241,22 @@ private:
 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 (process_stratum_target *filter_target,
+                               ptid_t filter_ptid)
+    : m_filter_target (filter_target), m_filter_ptid (filter_ptid)
   {}
 
   all_non_exited_threads_range ()
-    : m_filter_ptid (minus_one_ptid)
+    : m_filter_target (nullptr), m_filter_ptid (minus_one_ptid)
   {}
 
   all_non_exited_threads_iterator begin () const
-  { return all_non_exited_threads_iterator (m_filter_ptid); }
+  { return all_non_exited_threads_iterator (m_filter_target, m_filter_ptid); }
   all_non_exited_threads_iterator end () const
   { return all_non_exited_threads_iterator (); }
 
 private:
+  process_stratum_target *m_filter_target;
   ptid_t m_filter_ptid;
 };