diff options
Diffstat (limited to 'gdb/python/py-progspace.c')
| -rw-r--r-- | gdb/python/py-progspace.c | 240 |
1 files changed, 240 insertions, 0 deletions
diff --git a/gdb/python/py-progspace.c b/gdb/python/py-progspace.c new file mode 100644 index 0000000..1460878 --- /dev/null +++ b/gdb/python/py-progspace.c @@ -0,0 +1,240 @@ +/* Python interface to program spaces. + + Copyright (C) 2010 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 "python-internal.h" +#include "charset.h" +#include "progspace.h" +#include "objfiles.h" +#include "language.h" + +typedef struct +{ + PyObject_HEAD + + /* The corresponding pspace. */ + struct program_space *pspace; + + /* The pretty-printer list of functions. */ + PyObject *printers; +} pspace_object; + +static PyTypeObject pspace_object_type; + +static const struct program_space_data *pspy_pspace_data_key; + + + +/* An Objfile method which returns the objfile's file name, or None. */ + +static PyObject * +pspy_get_filename (PyObject *self, void *closure) +{ + pspace_object *obj = (pspace_object *) self; + if (obj->pspace) + { + struct objfile *objfile = obj->pspace->symfile_object_file; + if (objfile && objfile->name) + return PyString_Decode (objfile->name, strlen (objfile->name), + host_charset (), NULL); + } + Py_RETURN_NONE; +} + +static void +pspy_dealloc (PyObject *self) +{ + pspace_object *ps_self = (pspace_object *) self; + Py_XDECREF (ps_self->printers); + self->ob_type->tp_free (self); +} + +static PyObject * +pspy_new (PyTypeObject *type, PyObject *args, PyObject *keywords) +{ + pspace_object *self = (pspace_object *) type->tp_alloc (type, 0); + if (self) + { + self->pspace = NULL; + + self->printers = PyList_New (0); + if (!self->printers) + { + Py_DECREF (self); + return NULL; + } + } + return (PyObject *) self; +} + +PyObject * +pspy_get_printers (PyObject *o, void *ignore) +{ + pspace_object *self = (pspace_object *) o; + Py_INCREF (self->printers); + return self->printers; +} + +static int +pspy_set_printers (PyObject *o, PyObject *value, void *ignore) +{ + PyObject *tmp; + pspace_object *self = (pspace_object *) o; + if (! value) + { + PyErr_SetString (PyExc_TypeError, + "cannot delete the pretty_printers attribute"); + return -1; + } + + if (! PyList_Check (value)) + { + PyErr_SetString (PyExc_TypeError, + "the pretty_printers attribute must be a list"); + return -1; + } + + /* Take care in case the LHS and RHS are related somehow. */ + tmp = self->printers; + Py_INCREF (value); + self->printers = value; + Py_XDECREF (tmp); + + return 0; +} + + + +/* Clear the PSPACE pointer in a Pspace object and remove the reference. */ + +static void +py_free_pspace (struct program_space *pspace, void *datum) +{ + struct cleanup *cleanup; + pspace_object *object = datum; + /* FIXME: What's the right way to get a program space's arch? + There may be multiple. */ + struct gdbarch *arch = get_objfile_arch (pspace->symfile_object_file); + + cleanup = ensure_python_env (arch, current_language); + object->pspace = NULL; + Py_DECREF ((PyObject *) object); + do_cleanups (cleanup); +} + +/* Return a borrowed reference to the Python object of type Pspace + representing PSPACE. If the object has already been created, + return it. Otherwise, create it. Return NULL and set the Python + error on failure. */ + +PyObject * +pspace_to_pspace_object (struct program_space *pspace) +{ + pspace_object *object; + + object = program_space_data (pspace, pspy_pspace_data_key); + if (!object) + { + object = PyObject_New (pspace_object, &pspace_object_type); + if (object) + { + PyObject *dict; + + object->pspace = pspace; + + object->printers = PyList_New (0); + if (!object->printers) + { + Py_DECREF (object); + return NULL; + } + + set_program_space_data (pspace, pspy_pspace_data_key, object); + } + } + + return (PyObject *) object; +} + +void +gdbpy_initialize_pspace (void) +{ + pspy_pspace_data_key + = register_program_space_data_with_cleanup (py_free_pspace); + + if (PyType_Ready (&pspace_object_type) < 0) + return; + + Py_INCREF (&pspace_object_type); + PyModule_AddObject (gdb_module, "Progspace", (PyObject *) &pspace_object_type); +} + + + +static PyGetSetDef pspace_getset[] = +{ + { "filename", pspy_get_filename, NULL, + "The progspace's main filename, or None.", NULL }, + { "pretty_printers", pspy_get_printers, pspy_set_printers, + "Pretty printers.", NULL }, + { NULL } +}; + +static PyTypeObject pspace_object_type = +{ + PyObject_HEAD_INIT (NULL) + 0, /*ob_size*/ + "gdb.Progspace", /*tp_name*/ + sizeof (pspace_object), /*tp_basicsize*/ + 0, /*tp_itemsize*/ + pspy_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, /*tp_flags*/ + "GDB progspace object", /* tp_doc */ + 0, /* tp_traverse */ + 0, /* tp_clear */ + 0, /* tp_richcompare */ + 0, /* tp_weaklistoffset */ + 0, /* tp_iter */ + 0, /* tp_iternext */ + 0, /* tp_methods */ + 0, /* tp_members */ + pspace_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 */ + pspy_new, /* tp_new */ +}; |