mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-27 04:52:05 +08:00
415 lines
10 KiB
C
415 lines
10 KiB
C
/* Python interface to inferior threads.
|
|
|
|
Copyright (C) 2009-2020 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/>. */
|
|
|
|
#include "defs.h"
|
|
#include "gdbthread.h"
|
|
#include "inferior.h"
|
|
#include "python-internal.h"
|
|
|
|
extern PyTypeObject thread_object_type
|
|
CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF ("thread_object");
|
|
|
|
/* Require that INFERIOR be a valid inferior ID. */
|
|
#define THPY_REQUIRE_VALID(Thread) \
|
|
do { \
|
|
if (!Thread->thread) \
|
|
{ \
|
|
PyErr_SetString (PyExc_RuntimeError, \
|
|
_("Thread no longer exists.")); \
|
|
return NULL; \
|
|
} \
|
|
} while (0)
|
|
|
|
gdbpy_ref<thread_object>
|
|
create_thread_object (struct thread_info *tp)
|
|
{
|
|
gdbpy_ref<thread_object> thread_obj;
|
|
|
|
gdbpy_ref<inferior_object> inf_obj = inferior_to_inferior_object (tp->inf);
|
|
if (inf_obj == NULL)
|
|
return NULL;
|
|
|
|
thread_obj.reset (PyObject_New (thread_object, &thread_object_type));
|
|
if (thread_obj == NULL)
|
|
return NULL;
|
|
|
|
thread_obj->thread = tp;
|
|
thread_obj->inf_obj = (PyObject *) inf_obj.release ();
|
|
|
|
return thread_obj;
|
|
}
|
|
|
|
static void
|
|
thpy_dealloc (PyObject *self)
|
|
{
|
|
Py_DECREF (((thread_object *) self)->inf_obj);
|
|
Py_TYPE (self)->tp_free (self);
|
|
}
|
|
|
|
static PyObject *
|
|
thpy_get_name (PyObject *self, void *ignore)
|
|
{
|
|
thread_object *thread_obj = (thread_object *) self;
|
|
const char *name;
|
|
|
|
THPY_REQUIRE_VALID (thread_obj);
|
|
|
|
name = thread_obj->thread->name;
|
|
if (name == NULL)
|
|
name = target_thread_name (thread_obj->thread);
|
|
|
|
if (name == NULL)
|
|
Py_RETURN_NONE;
|
|
|
|
return PyString_FromString (name);
|
|
}
|
|
|
|
static int
|
|
thpy_set_name (PyObject *self, PyObject *newvalue, void *ignore)
|
|
{
|
|
thread_object *thread_obj = (thread_object *) self;
|
|
gdb::unique_xmalloc_ptr<char> name;
|
|
|
|
if (! thread_obj->thread)
|
|
{
|
|
PyErr_SetString (PyExc_RuntimeError, _("Thread no longer exists."));
|
|
return -1;
|
|
}
|
|
|
|
if (newvalue == NULL)
|
|
{
|
|
PyErr_SetString (PyExc_TypeError,
|
|
_("Cannot delete `name' attribute."));
|
|
return -1;
|
|
}
|
|
else if (newvalue == Py_None)
|
|
{
|
|
/* Nothing. */
|
|
}
|
|
else if (! gdbpy_is_string (newvalue))
|
|
{
|
|
PyErr_SetString (PyExc_TypeError,
|
|
_("The value of `name' must be a string."));
|
|
return -1;
|
|
}
|
|
else
|
|
{
|
|
name = python_string_to_host_string (newvalue);
|
|
if (! name)
|
|
return -1;
|
|
}
|
|
|
|
xfree (thread_obj->thread->name);
|
|
thread_obj->thread->name = name.release ();
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Getter for InferiorThread.num. */
|
|
|
|
static PyObject *
|
|
thpy_get_num (PyObject *self, void *closure)
|
|
{
|
|
thread_object *thread_obj = (thread_object *) self;
|
|
|
|
THPY_REQUIRE_VALID (thread_obj);
|
|
|
|
return PyLong_FromLong (thread_obj->thread->per_inf_num);
|
|
}
|
|
|
|
/* Getter for InferiorThread.global_num. */
|
|
|
|
static PyObject *
|
|
thpy_get_global_num (PyObject *self, void *closure)
|
|
{
|
|
thread_object *thread_obj = (thread_object *) self;
|
|
|
|
THPY_REQUIRE_VALID (thread_obj);
|
|
|
|
return PyLong_FromLong (thread_obj->thread->global_num);
|
|
}
|
|
|
|
/* Getter for InferiorThread.ptid -> (pid, lwp, tid).
|
|
Returns a tuple with the thread's ptid components. */
|
|
|
|
static PyObject *
|
|
thpy_get_ptid (PyObject *self, void *closure)
|
|
{
|
|
thread_object *thread_obj = (thread_object *) self;
|
|
|
|
THPY_REQUIRE_VALID (thread_obj);
|
|
|
|
return gdbpy_create_ptid_object (thread_obj->thread->ptid);
|
|
}
|
|
|
|
/* Getter for InferiorThread.inferior -> Inferior. */
|
|
|
|
static PyObject *
|
|
thpy_get_inferior (PyObject *self, void *ignore)
|
|
{
|
|
thread_object *thread_obj = (thread_object *) self;
|
|
|
|
THPY_REQUIRE_VALID (thread_obj);
|
|
Py_INCREF (thread_obj->inf_obj);
|
|
|
|
return thread_obj->inf_obj;
|
|
}
|
|
|
|
/* Implementation of InferiorThread.switch ().
|
|
Makes this the GDB selected thread. */
|
|
|
|
static PyObject *
|
|
thpy_switch (PyObject *self, PyObject *args)
|
|
{
|
|
thread_object *thread_obj = (thread_object *) self;
|
|
|
|
THPY_REQUIRE_VALID (thread_obj);
|
|
|
|
try
|
|
{
|
|
switch_to_thread (thread_obj->thread);
|
|
}
|
|
catch (const gdb_exception &except)
|
|
{
|
|
GDB_PY_HANDLE_EXCEPTION (except);
|
|
}
|
|
|
|
Py_RETURN_NONE;
|
|
}
|
|
|
|
/* Implementation of InferiorThread.is_stopped () -> Boolean.
|
|
Return whether the thread is stopped. */
|
|
|
|
static PyObject *
|
|
thpy_is_stopped (PyObject *self, PyObject *args)
|
|
{
|
|
thread_object *thread_obj = (thread_object *) self;
|
|
|
|
THPY_REQUIRE_VALID (thread_obj);
|
|
|
|
if (thread_obj->thread->state == THREAD_STOPPED)
|
|
Py_RETURN_TRUE;
|
|
|
|
Py_RETURN_FALSE;
|
|
}
|
|
|
|
/* Implementation of InferiorThread.is_running () -> Boolean.
|
|
Return whether the thread is running. */
|
|
|
|
static PyObject *
|
|
thpy_is_running (PyObject *self, PyObject *args)
|
|
{
|
|
thread_object *thread_obj = (thread_object *) self;
|
|
|
|
THPY_REQUIRE_VALID (thread_obj);
|
|
|
|
if (thread_obj->thread->state == THREAD_RUNNING)
|
|
Py_RETURN_TRUE;
|
|
|
|
Py_RETURN_FALSE;
|
|
}
|
|
|
|
/* Implementation of InferiorThread.is_exited () -> Boolean.
|
|
Return whether the thread is exited. */
|
|
|
|
static PyObject *
|
|
thpy_is_exited (PyObject *self, PyObject *args)
|
|
{
|
|
thread_object *thread_obj = (thread_object *) self;
|
|
|
|
THPY_REQUIRE_VALID (thread_obj);
|
|
|
|
if (thread_obj->thread->state == THREAD_EXITED)
|
|
Py_RETURN_TRUE;
|
|
|
|
Py_RETURN_FALSE;
|
|
}
|
|
|
|
/* Implementation of gdb.InfThread.is_valid (self) -> Boolean.
|
|
Returns True if this inferior Thread object still exists
|
|
in GDB. */
|
|
|
|
static PyObject *
|
|
thpy_is_valid (PyObject *self, PyObject *args)
|
|
{
|
|
thread_object *thread_obj = (thread_object *) self;
|
|
|
|
if (! thread_obj->thread)
|
|
Py_RETURN_FALSE;
|
|
|
|
Py_RETURN_TRUE;
|
|
}
|
|
|
|
/* Implementation of gdb.InferiorThread.handle (self) -> handle. */
|
|
|
|
static PyObject *
|
|
thpy_thread_handle (PyObject *self, PyObject *args)
|
|
{
|
|
thread_object *thread_obj = (thread_object *) self;
|
|
THPY_REQUIRE_VALID (thread_obj);
|
|
|
|
gdb::byte_vector hv;
|
|
|
|
try
|
|
{
|
|
hv = target_thread_info_to_thread_handle (thread_obj->thread);
|
|
}
|
|
catch (const gdb_exception &except)
|
|
{
|
|
GDB_PY_HANDLE_EXCEPTION (except);
|
|
}
|
|
|
|
if (hv.size () == 0)
|
|
{
|
|
PyErr_SetString (PyExc_RuntimeError, _("Thread handle not found."));
|
|
return NULL;
|
|
}
|
|
|
|
PyObject *object = PyBytes_FromStringAndSize ((const char *) hv.data (),
|
|
hv.size());
|
|
return object;
|
|
}
|
|
|
|
/* Return a reference to a new Python object representing a ptid_t.
|
|
The object is a tuple containing (pid, lwp, tid). */
|
|
PyObject *
|
|
gdbpy_create_ptid_object (ptid_t ptid)
|
|
{
|
|
int pid;
|
|
long tid, lwp;
|
|
PyObject *ret;
|
|
|
|
ret = PyTuple_New (3);
|
|
if (!ret)
|
|
return NULL;
|
|
|
|
pid = ptid.pid ();
|
|
lwp = ptid.lwp ();
|
|
tid = ptid.tid ();
|
|
|
|
PyTuple_SET_ITEM (ret, 0, PyInt_FromLong (pid));
|
|
PyTuple_SET_ITEM (ret, 1, PyInt_FromLong (lwp));
|
|
PyTuple_SET_ITEM (ret, 2, PyInt_FromLong (tid));
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Implementation of gdb.selected_thread () -> gdb.InferiorThread.
|
|
Returns the selected thread object. */
|
|
|
|
PyObject *
|
|
gdbpy_selected_thread (PyObject *self, PyObject *args)
|
|
{
|
|
if (inferior_ptid != null_ptid)
|
|
return thread_to_thread_object (inferior_thread ()).release ();
|
|
|
|
Py_RETURN_NONE;
|
|
}
|
|
|
|
int
|
|
gdbpy_initialize_thread (void)
|
|
{
|
|
if (PyType_Ready (&thread_object_type) < 0)
|
|
return -1;
|
|
|
|
return gdb_pymodule_addobject (gdb_module, "InferiorThread",
|
|
(PyObject *) &thread_object_type);
|
|
}
|
|
|
|
static gdb_PyGetSetDef thread_object_getset[] =
|
|
{
|
|
{ "name", thpy_get_name, thpy_set_name,
|
|
"The name of the thread, as set by the user or the OS.", NULL },
|
|
{ "num", thpy_get_num, NULL,
|
|
"Per-inferior number of the thread, as assigned by GDB.", NULL },
|
|
{ "global_num", thpy_get_global_num, NULL,
|
|
"Global number of the thread, as assigned by GDB.", NULL },
|
|
{ "ptid", thpy_get_ptid, NULL, "ID of the thread, as assigned by the OS.",
|
|
NULL },
|
|
{ "inferior", thpy_get_inferior, NULL,
|
|
"The Inferior object this thread belongs to.", NULL },
|
|
|
|
{ NULL }
|
|
};
|
|
|
|
static PyMethodDef thread_object_methods[] =
|
|
{
|
|
{ "is_valid", thpy_is_valid, METH_NOARGS,
|
|
"is_valid () -> Boolean.\n\
|
|
Return true if this inferior thread is valid, false if not." },
|
|
{ "switch", thpy_switch, METH_NOARGS,
|
|
"switch ()\n\
|
|
Makes this the GDB selected thread." },
|
|
{ "is_stopped", thpy_is_stopped, METH_NOARGS,
|
|
"is_stopped () -> Boolean\n\
|
|
Return whether the thread is stopped." },
|
|
{ "is_running", thpy_is_running, METH_NOARGS,
|
|
"is_running () -> Boolean\n\
|
|
Return whether the thread is running." },
|
|
{ "is_exited", thpy_is_exited, METH_NOARGS,
|
|
"is_exited () -> Boolean\n\
|
|
Return whether the thread is exited." },
|
|
{ "handle", thpy_thread_handle, METH_NOARGS,
|
|
"handle () -> handle\n\
|
|
Return thread library specific handle for thread." },
|
|
|
|
{ NULL }
|
|
};
|
|
|
|
PyTypeObject thread_object_type =
|
|
{
|
|
PyVarObject_HEAD_INIT (NULL, 0)
|
|
"gdb.InferiorThread", /*tp_name*/
|
|
sizeof (thread_object), /*tp_basicsize*/
|
|
0, /*tp_itemsize*/
|
|
thpy_dealloc, /*tp_dealloc*/
|
|
0, /*tp_print*/
|
|
0, /*tp_getattr*/
|
|
0, /*tp_setattr*/
|
|
0, /*tp_compare*/
|
|
0, /*tp_repr*/
|
|
0, /*tp_as_number*/
|
|
0, /*tp_as_sequence*/
|
|
0, /*tp_as_mapping*/
|
|
0, /*tp_hash */
|
|
0, /*tp_call*/
|
|
0, /*tp_str*/
|
|
0, /*tp_getattro*/
|
|
0, /*tp_setattro*/
|
|
0, /*tp_as_buffer*/
|
|
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_ITER, /*tp_flags*/
|
|
"GDB thread object", /* tp_doc */
|
|
0, /* tp_traverse */
|
|
0, /* tp_clear */
|
|
0, /* tp_richcompare */
|
|
0, /* tp_weaklistoffset */
|
|
0, /* tp_iter */
|
|
0, /* tp_iternext */
|
|
thread_object_methods, /* tp_methods */
|
|
0, /* tp_members */
|
|
thread_object_getset, /* tp_getset */
|
|
0, /* tp_base */
|
|
0, /* tp_dict */
|
|
0, /* tp_descr_get */
|
|
0, /* tp_descr_set */
|
|
0, /* tp_dictoffset */
|
|
0, /* tp_init */
|
|
0 /* tp_alloc */
|
|
};
|