From 4c63965b8a74d9dd3d8ed6fed659c4db977c6ddd Mon Sep 17 00:00:00 2001 From: Jan Kratochvil Date: Thu, 26 Jan 2012 21:54:45 +0000 Subject: [PATCH] gdb/ Do not open script filenames twice. * cli/cli-cmds.c (source_script_from_stream): Pass to source_python_script also STREAM. * python/py-auto-load.c (source_section_scripts): Pass to source_python_script_for_objfile also STREAM. (auto_load_objfile_script): Pass to source_python_script_for_objfile also INPUT. * python/python-internal.h (source_python_script_for_objfile): New parameter file, rename parameter file to filename. * python/python.c (python_run_simple_file): Call PyRun_SimpleFile instead if !_WIN32. Update the function comment. (source_python_script, source_python_script_for_objfile) (source_python_script): New parameter file, rename parameter file to filename. Pass FILENAME to python_run_simple_file. * python/python.h (source_python_script): New parameter file, rename parameter file to filename. --- gdb/ChangeLog | 19 +++++++++++ gdb/cli/cli-cmds.c | 4 +-- gdb/python/py-auto-load.c | 4 +-- gdb/python/python-internal.h | 4 +-- gdb/python/python.c | 64 ++++++++++++++++++------------------ gdb/python/python.h | 2 +- 6 files changed, 57 insertions(+), 40 deletions(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index b918a442f6e..1c177771b9e 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,3 +1,22 @@ +2012-01-26 Jan Kratochvil + + Do not open script filenames twice. + * cli/cli-cmds.c (source_script_from_stream): Pass to + source_python_script also STREAM. + * python/py-auto-load.c (source_section_scripts): Pass to + source_python_script_for_objfile also STREAM. + (auto_load_objfile_script): Pass to source_python_script_for_objfile + also INPUT. + * python/python-internal.h (source_python_script_for_objfile): New + parameter file, rename parameter file to filename. + * python/python.c (python_run_simple_file): Call PyRun_SimpleFile + instead if !_WIN32. Update the function comment. + (source_python_script, source_python_script_for_objfile) + (source_python_script): New parameter file, rename parameter file to + filename. Pass FILENAME to python_run_simple_file. + * python/python.h (source_python_script): New parameter file, rename + parameter file to filename. + 2012-01-26 Pedro Alves * corelow.c (core_has_fake_pid): Delete. diff --git a/gdb/cli/cli-cmds.c b/gdb/cli/cli-cmds.c index 15b6b792c30..9c118e10f54 100644 --- a/gdb/cli/cli-cmds.c +++ b/gdb/cli/cli-cmds.c @@ -539,9 +539,7 @@ source_script_from_stream (FILE *stream, const char *file) TRY_CATCH (e, RETURN_MASK_ERROR) { - /* The python support reopens the file using python functions, - so there's no point in passing STREAM here. */ - source_python_script (file); + source_python_script (stream, file); } if (e.reason < 0) { diff --git a/gdb/python/py-auto-load.c b/gdb/python/py-auto-load.c index 3abb82a15ce..e297bf3afc3 100644 --- a/gdb/python/py-auto-load.c +++ b/gdb/python/py-auto-load.c @@ -312,7 +312,7 @@ Use `info auto-load-scripts [REGEXP]' to list them."), { /* If this file is not currently loaded, load it. */ if (! in_hash_table) - source_python_script_for_objfile (objfile, full_path); + source_python_script_for_objfile (objfile, stream, full_path); fclose (stream); xfree (full_path); } @@ -431,7 +431,7 @@ auto_load_objfile_script (struct objfile *objfile, const char *suffix) It's highly unlikely that we'd ever load it twice, and these scripts are required to be idempotent under multiple loads anyway. */ - source_python_script_for_objfile (objfile, debugfile); + source_python_script_for_objfile (objfile, input, debugfile); fclose (input); } diff --git a/gdb/python/python-internal.h b/gdb/python/python-internal.h index 328e5d87878..22e6b4192c1 100644 --- a/gdb/python/python-internal.h +++ b/gdb/python/python-internal.h @@ -289,8 +289,8 @@ extern const struct language_defn *python_language; void gdbpy_print_stack (void); -void source_python_script_for_objfile (struct objfile *objfile, - const char *file); +void source_python_script_for_objfile (struct objfile *objfile, FILE *file, + const char *filename); PyObject *python_string_to_unicode (PyObject *obj); char *unicode_to_target_string (PyObject *unicode_str); diff --git a/gdb/python/python.c b/gdb/python/python.c index 5a0d7767f14..795dd4425d2 100644 --- a/gdb/python/python.c +++ b/gdb/python/python.c @@ -151,34 +151,31 @@ ensure_python_env (struct gdbarch *gdbarch, return make_cleanup (restore_python_env, env); } -/* A wrapper around PyRun_SimpleFile. FILENAME is the name of - the Python script to run. - - One of the parameters of PyRun_SimpleFile is a FILE *. - The problem is that type FILE is extremely system and compiler - dependent. So, unless the Python library has been compiled using - the same build environment as GDB, we run the risk of getting - a crash due to inconsistencies between the definition used by GDB, - and the definition used by Python. A mismatch can very likely - lead to a crash. - - There is also the situation where the Python library and GDB - are using two different versions of the C runtime library. - This is particularly visible on Windows, where few users would - build Python themselves (this is no trivial task on this platform), - and thus use binaries built by someone else instead. Python, - being built with VC, would use one version of the msvcr DLL - (Eg. msvcr100.dll), while MinGW uses msvcrt.dll. A FILE * - from one runtime does not necessarily operate correctly in +/* A wrapper around PyRun_SimpleFile. FILE is the Python script to run + named FILENAME. + + On Windows hosts few users would build Python themselves (this is no + trivial task on this platform), and thus use binaries built by + someone else instead. There may happen situation where the Python + library and GDB are using two different versions of the C runtime + library. Python, being built with VC, would use one version of the + msvcr DLL (Eg. msvcr100.dll), while MinGW uses msvcrt.dll. + A FILE * from one runtime does not necessarily operate correctly in the other runtime. - To work around this potential issue, we create the FILE object - using Python routines, thus making sure that it is compatible - with the Python library. */ + To work around this potential issue, we create on Windows hosts the + FILE object using Python routines, thus making sure that it is + compatible with the Python library. */ static void -python_run_simple_file (const char *filename) +python_run_simple_file (FILE *file, const char *filename) { +#ifndef _WIN32 + + PyRun_SimpleFile (file, filename); + +#else /* _WIN32 */ + char *full_path; PyObject *python_file; struct cleanup *cleanup; @@ -198,6 +195,8 @@ python_run_simple_file (const char *filename) make_cleanup_py_decref (python_file); PyRun_SimpleFile (PyFile_AsFile (python_file), filename); do_cleanups (cleanup); + +#endif /* _WIN32 */ } /* Given a command_line, return a command string suitable for passing @@ -620,17 +619,17 @@ gdbpy_parse_and_eval (PyObject *self, PyObject *args) } /* Read a file as Python code. - FILE is the name of the file. + FILE is the file to run. FILENAME is name of the file FILE. This does not throw any errors. If an exception occurs python will print the traceback and clear the error indicator. */ void -source_python_script (const char *file) +source_python_script (FILE *file, const char *filename) { struct cleanup *cleanup; cleanup = ensure_python_env (get_current_arch (), current_language); - python_run_simple_file (file); + python_run_simple_file (file, filename); do_cleanups (cleanup); } @@ -991,19 +990,20 @@ gdbpy_progspaces (PyObject *unused1, PyObject *unused2) source_python_script_for_objfile; it is NULL at other times. */ static struct objfile *gdbpy_current_objfile; -/* Set the current objfile to OBJFILE and then read FILE as Python code. - This does not throw any errors. If an exception occurs python will print - the traceback and clear the error indicator. */ +/* Set the current objfile to OBJFILE and then read FILE named FILENAME + as Python code. This does not throw any errors. If an exception + occurs python will print the traceback and clear the error indicator. */ void -source_python_script_for_objfile (struct objfile *objfile, const char *file) +source_python_script_for_objfile (struct objfile *objfile, FILE *file, + const char *filename) { struct cleanup *cleanups; cleanups = ensure_python_env (get_objfile_arch (objfile), current_language); gdbpy_current_objfile = objfile; - python_run_simple_file (file); + python_run_simple_file (file, filename); do_cleanups (cleanups); gdbpy_current_objfile = NULL; @@ -1079,7 +1079,7 @@ eval_python_from_control_command (struct command_line *cmd) } void -source_python_script (const char *file) +source_python_script (FILE *file, const char *filename) { throw_error (UNSUPPORTED_ERROR, _("Python scripting is not supported in this copy of GDB.")); diff --git a/gdb/python/python.h b/gdb/python/python.h index 9e461f7ee9d..597ed2ec992 100644 --- a/gdb/python/python.h +++ b/gdb/python/python.h @@ -30,7 +30,7 @@ extern void finish_python_initialization (void); void eval_python_from_control_command (struct command_line *); -void source_python_script (const char *file); +void source_python_script (FILE *file, const char *filename); int apply_val_pretty_printer (struct type *type, const gdb_byte *valaddr, int embedded_offset, CORE_ADDR address, -- 2.30.2