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| | /* Threading code.
Copyright (C) 2012 Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs 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.
GNU Emacs 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 GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
#include <setjmp.h>
#include "lisp.h"
struct thread_state the_only_thread;
struct thread_state *current_thread = &the_only_thread;
struct thread_state *all_threads = &the_only_thread;
sys_mutex_t global_lock;
static void
mark_one_thread (struct thread_state *thread)
{
register struct specbinding *bind;
struct handler *handler;
Lisp_Object tem;
for (bind = thread->m_specpdl; bind != thread->m_specpdl_ptr; bind++)
{
mark_object (bind->symbol);
mark_object (bind->old_value);
}
#if (GC_MARK_STACK == GC_MAKE_GCPROS_NOOPS \
|| GC_MARK_STACK == GC_MARK_STACK_CHECK_GCPROS)
mark_stack (thread->m_stack_bottom, thread->stack_top);
#else
{
register struct gcpro *tail;
for (tail = thread->m_gcprolist; tail; tail = tail->next)
for (i = 0; i < tail->nvars; i++)
mark_object (tail->var[i]);
}
#if BYTE_MARK_STACK
if (thread->m_byte_stack_list)
mark_byte_stack (thread->m_byte_stack_list);
#endif
mark_catchlist (thread->m_catchlist);
for (handler = thread->m_handlerlist; handler; handler = handler->next)
{
mark_object (handler->handler);
mark_object (handler->var);
}
mark_backtrace (thread->m_backtrace_list);
#endif
if (thread->m_current_buffer)
{
XSETBUFFER (tem, thread->m_current_buffer);
mark_object (tem);
}
mark_object (thread->m_last_thing_searched);
if (thread->m_saved_last_thing_searched)
mark_object (thread->m_saved_last_thing_searched);
}
static void
mark_threads_callback (void *ignore)
{
struct thread_state *iter;
for (iter = all_threads; iter; iter = iter->next_thread)
mark_one_thread (iter);
}
void
mark_threads (void)
{
flush_stack_call_func (mark_threads_callback, NULL);
}
void
unmark_threads (void)
{
struct thread_state *iter;
for (iter = all_threads; iter; iter = iter->next_thread)
if (iter->m_byte_stack_list)
unmark_byte_stack (iter->m_byte_stack_list);
}
void
init_threads (void)
{
sys_mutex_init (&global_lock);
sys_mutex_lock (&global_lock);
}
|