/* Inferior process information for the remote server for GDB.
- Copyright (C) 2002-2017 Free Software Foundation, Inc.
+ Copyright (C) 2002-2020 Free Software Foundation, Inc.
Contributed by MontaVista Software.
#include "gdbthread.h"
#include "dll.h"
-struct inferior_list all_processes;
-struct inferior_list all_threads;
+std::list<process_info *> all_processes;
+std::list<thread_info *> all_threads;
struct thread_info *current_thread;
-#define get_thread(inf) ((struct thread_info *)(inf))
-
/* The current working directory used to start the inferior. */
static const char *current_inferior_cwd = NULL;
-void
-add_inferior_to_list (struct inferior_list *list,
- struct inferior_list_entry *new_inferior)
-{
- new_inferior->next = NULL;
- if (list->tail != NULL)
- list->tail->next = new_inferior;
- else
- list->head = new_inferior;
- list->tail = new_inferior;
-}
-
-/* Invoke ACTION for each inferior in LIST. */
-
-void
-for_each_inferior (struct inferior_list *list,
- void (*action) (struct inferior_list_entry *))
-{
- struct inferior_list_entry *cur = list->head, *next;
-
- while (cur != NULL)
- {
- next = cur->next;
- (*action) (cur);
- cur = next;
- }
-}
-
-/* Invoke ACTION for each inferior in LIST, passing DATA to ACTION. */
-
-void
-for_each_inferior_with_data (struct inferior_list *list,
- void (*action) (struct inferior_list_entry *,
- void *),
- void *data)
-{
- struct inferior_list_entry *cur = list->head, *next;
-
- while (cur != NULL)
- {
- next = cur->next;
- (*action) (cur, data);
- cur = next;
- }
-}
-
-void
-remove_inferior (struct inferior_list *list,
- struct inferior_list_entry *entry)
-{
- struct inferior_list_entry **cur;
-
- if (list->head == entry)
- {
- list->head = entry->next;
- if (list->tail == entry)
- list->tail = list->head;
- return;
- }
-
- cur = &list->head;
- while (*cur && (*cur)->next != entry)
- cur = &(*cur)->next;
-
- if (*cur == NULL)
- return;
-
- (*cur)->next = entry->next;
-
- if (list->tail == entry)
- list->tail = *cur;
-}
-
struct thread_info *
add_thread (ptid_t thread_id, void *target_data)
{
struct thread_info *new_thread = XCNEW (struct thread_info);
- new_thread->entry.id = thread_id;
+ new_thread->id = thread_id;
new_thread->last_resume_kind = resume_continue;
new_thread->last_status.kind = TARGET_WAITKIND_IGNORE;
- add_inferior_to_list (&all_threads, &new_thread->entry);
+ all_threads.push_back (new_thread);
if (current_thread == NULL)
current_thread = new_thread;
return new_thread;
}
-/* Wrapper around get_first_inferior to return a struct thread_info *. */
+/* See gdbthread.h. */
struct thread_info *
get_first_thread (void)
{
- return (struct thread_info *) get_first_inferior (&all_threads);
+ if (!all_threads.empty ())
+ return all_threads.front ();
+ else
+ return NULL;
}
struct thread_info *
find_thread_ptid (ptid_t ptid)
{
- return (struct thread_info *) find_inferior_id (&all_threads, ptid);
+ return find_thread ([&] (thread_info *thread) {
+ return thread->id == ptid;
+ });
}
/* Find a thread associated with the given PROCESS, or NULL if no
static struct thread_info *
find_thread_process (const struct process_info *const process)
{
- return find_any_thread_of_pid (process->entry.id.pid ());
-}
-
-/* Helper for find_any_thread_of_pid. Returns true if a thread
- matches a PID. */
-
-static int
-thread_of_pid (struct inferior_list_entry *entry, void *pid_p)
-{
- int pid = *(int *) pid_p;
-
- return (ptid_get_pid (entry->id) == pid);
+ return find_any_thread_of_pid (process->pid);
}
/* See gdbthread.h. */
struct thread_info *
find_any_thread_of_pid (int pid)
{
- struct inferior_list_entry *entry;
-
- entry = find_inferior (&all_threads, thread_of_pid, &pid);
-
- return (struct thread_info *) entry;
+ return find_thread (pid, [] (thread_info *thread) {
+ return true;
+ });
}
static void
-free_one_thread (struct inferior_list_entry *inf)
+free_one_thread (thread_info *thread)
{
- struct thread_info *thread = get_thread (inf);
free_register_cache (thread_regcache_data (thread));
free (thread);
}
target_disable_btrace (thread->btrace);
discard_queued_stop_replies (ptid_of (thread));
- remove_inferior (&all_threads, (struct inferior_list_entry *) thread);
- free_one_thread (&thread->entry);
+ all_threads.remove (thread);
+ free_one_thread (thread);
if (current_thread == thread)
current_thread = NULL;
}
-/* Return a pointer to the first inferior in LIST, or NULL if there isn't one.
- This is for cases where the caller needs a thread, but doesn't care
- which one. */
-
-struct inferior_list_entry *
-get_first_inferior (struct inferior_list *list)
-{
- if (list->head != NULL)
- return list->head;
- return NULL;
-}
-
-/* Find the first inferior_list_entry E in LIST for which FUNC (E, ARG)
- returns non-zero. If no entry is found then return NULL. */
-
-struct inferior_list_entry *
-find_inferior (struct inferior_list *list,
- int (*func) (struct inferior_list_entry *, void *), void *arg)
-{
- struct inferior_list_entry *inf = list->head;
-
- while (inf != NULL)
- {
- struct inferior_list_entry *next;
-
- next = inf->next;
- if ((*func) (inf, arg))
- return inf;
- inf = next;
- }
-
- return NULL;
-}
-
-/* Find the random inferior_list_entry E in LIST for which FUNC (E, ARG)
- returns non-zero. If no entry is found then return NULL. */
-
-struct inferior_list_entry *
-find_inferior_in_random (struct inferior_list *list,
- int (*func) (struct inferior_list_entry *, void *),
- void *arg)
-{
- struct inferior_list_entry *inf = list->head;
- int count = 0;
- int random_selector;
-
- /* First count how many interesting entries we have. */
- while (inf != NULL)
- {
- struct inferior_list_entry *next;
-
- next = inf->next;
- if ((*func) (inf, arg))
- count++;
- inf = next;
- }
-
- if (count == 0)
- return NULL;
-
- /* Now randomly pick an entry out of those. */
- random_selector = (int)
- ((count * (double) rand ()) / (RAND_MAX + 1.0));
-
- inf = list->head;
- while (inf != NULL)
- {
- struct inferior_list_entry *next;
-
- next = inf->next;
- if ((*func) (inf, arg) && (random_selector-- == 0))
- return inf;
- inf = next;
- }
-
- gdb_assert_not_reached ("failed to find an inferior in random.");
- return NULL;
-}
-
-struct inferior_list_entry *
-find_inferior_id (struct inferior_list *list, ptid_t id)
-{
- struct inferior_list_entry *inf = list->head;
-
- while (inf != NULL)
- {
- if (ptid_equal (inf->id, id))
- return inf;
- inf = inf->next;
- }
-
- return NULL;
-}
-
void *
thread_target_data (struct thread_info *thread)
{
thread->regcache_data = data;
}
-/* Return true if LIST has exactly one entry. */
-
-int
-one_inferior_p (struct inferior_list *list)
-{
- return list->head != NULL && list->head == list->tail;
-}
-
-/* Reset head,tail of LIST, assuming all entries have already been freed. */
-
-void
-clear_inferior_list (struct inferior_list *list)
-{
- list->head = NULL;
- list->tail = NULL;
-}
-
void
clear_inferiors (void)
{
- for_each_inferior (&all_threads, free_one_thread);
- clear_inferior_list (&all_threads);
+ for_each_thread (free_one_thread);
+ all_threads.clear ();
clear_dlls ();
struct process_info *
add_process (int pid, int attached)
{
- struct process_info *process = XCNEW (struct process_info);
-
- process->entry.id = pid_to_ptid (pid);
- process->attached = attached;
+ process_info *process = new process_info (pid, attached);
- add_inferior_to_list (&all_processes, &process->entry);
+ all_processes.push_back (process);
return process;
}
clear_symbol_cache (&process->symbol_cache);
free_all_breakpoints (process);
gdb_assert (find_thread_process (process) == NULL);
- remove_inferior (&all_processes, &process->entry);
- VEC_free (int, process->syscalls_to_catch);
- free (process);
+ all_processes.remove (process);
+ delete process;
}
-struct process_info *
+process_info *
find_process_pid (int pid)
{
- return (struct process_info *)
- find_inferior_id (&all_processes, pid_to_ptid (pid));
+ return find_process ([&] (process_info *process) {
+ return process->pid == pid;
+ });
}
-/* Wrapper around get_first_inferior to return a struct process_info *. */
+/* Get the first process in the process list, or NULL if the list is empty. */
-struct process_info *
+process_info *
get_first_process (void)
{
- return (struct process_info *) get_first_inferior (&all_processes);
-}
-
-/* Return non-zero if INF, a struct process_info, was started by us,
- i.e. not attached to. */
-
-static int
-started_inferior_callback (struct inferior_list_entry *entry, void *args)
-{
- struct process_info *process = (struct process_info *) entry;
-
- return ! process->attached;
+ if (!all_processes.empty ())
+ return all_processes.front ();
+ else
+ return NULL;
}
/* Return non-zero if there are any inferiors that we have created
int
have_started_inferiors_p (void)
{
- return (find_inferior (&all_processes, started_inferior_callback, NULL)
- != NULL);
-}
-
-/* Return non-zero if INF, a struct process_info, was attached to. */
-
-static int
-attached_inferior_callback (struct inferior_list_entry *entry, void *args)
-{
- struct process_info *process = (struct process_info *) entry;
-
- return process->attached;
+ return find_process ([] (process_info *process) {
+ return !process->attached;
+ }) != NULL;
}
/* Return non-zero if there are any inferiors that we have attached to. */
int
have_attached_inferiors_p (void)
{
- return (find_inferior (&all_processes, attached_inferior_callback, NULL)
- != NULL);
+ return find_process ([] (process_info *process) {
+ return process->attached;
+ }) != NULL;
}
struct process_info *
get_thread_process (const struct thread_info *thread)
{
- int pid = ptid_get_pid (thread->entry.id);
- return find_process_pid (pid);
+ return find_process_pid (thread->id.pid ());
}
struct process_info *
return get_thread_process (current_thread);
}
-static void
-do_restore_current_thread_cleanup (void *arg)
-{
- current_thread = (struct thread_info *) arg;
-}
-
-struct cleanup *
-make_cleanup_restore_current_thread (void)
-{
- return make_cleanup (do_restore_current_thread_cleanup, current_thread);
-}
-
-/* See common/common-gdbthread.h. */
+/* See gdbsupport/common-gdbthread.h. */
void
-switch_to_thread (ptid_t ptid)
+switch_to_thread (process_stratum_target *ops, ptid_t ptid)
{
gdb_assert (ptid != minus_one_ptid);
current_thread = find_thread_ptid (ptid);
}
-/* See common/common-inferior.h. */
+/* See gdbsupport/common-inferior.h. */
const char *
get_inferior_cwd ()
return current_inferior_cwd;
}
-/* See common/common-inferior.h. */
+/* See gdbsupport/common-inferior.h. */
void
set_inferior_cwd (const char *cwd)
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