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Issue #19512: add some common identifiers to only create common strings once,

Browse source 
instead of creating temporary Unicode string objects

Add also more identifiers in pythonrun.c to avoid temporary Unicode string
objets for the interactive interpreter.
This commit is contained in:
Victor Stinner 2013-11-06 22:41:44 +01:00
parent bb52020d44
commit 090543736f
13 changed files with 72 additions and 49 deletions
Download patch file Download diff file Expand all files Collapse all files

59
Python/pythonrun.c
View file

@ -35,6 +35,21 @@
#define PATH_MAX MAXPATHLEN
#endif
/* Common identifiers */
_Py_Identifier _PyId_argv = _Py_static_string_init("argv");
_Py_Identifier _PyId_path = _Py_static_string_init("path");
_Py_Identifier _PyId_stdin = _Py_static_string_init("stdin");
_Py_Identifier _PyId_stdout = _Py_static_string_init("stdout");
_Py_Identifier _PyId_stderr = _Py_static_string_init("stderr");
/* local identifiers */
_Py_IDENTIFIER(excepthook);
_Py_IDENTIFIER(ps1);
_Py_IDENTIFIER(ps2);
_Py_IDENTIFIER(last_type);
_Py_IDENTIFIER(last_value);
_Py_IDENTIFIER(last_traceback);
#ifdef Py_REF_DEBUG
static
void _print_total_refs(void) {
@ -412,7 +427,7 @@ _Py_InitializeEx_Private(int install_sigs, int install_importlib)
pstderr = PyFile_NewStdPrinter(fileno(stderr));
if (pstderr == NULL)
Py_FatalError("Py_Initialize: can't set preliminary stderr");
PySys_SetObject("stderr", pstderr);
_PySys_SetObjectId(&_PyId_stderr, pstderr);
PySys_SetObject("__stderr__", pstderr);
Py_DECREF(pstderr);
@ -497,8 +512,8 @@ file_is_closed(PyObject *fobj)
static void
flush_std_files(void)
{
PyObject *fout = PySys_GetObject("stdout");
PyObject *ferr = PySys_GetObject("stderr");
PyObject *fout = _PySys_GetObjectId(&_PyId_stdout);
PyObject *ferr = _PySys_GetObjectId(&_PyId_stderr);
PyObject *tmp;
_Py_IDENTIFIER(flush);
@ -776,7 +791,7 @@ Py_NewInterpreter(void)
pstderr = PyFile_NewStdPrinter(fileno(stderr));
if (pstderr == NULL)
Py_FatalError("Py_Initialize: can't set preliminary stderr");
PySys_SetObject("stderr", pstderr);
_PySys_SetObjectId(&_PyId_stderr, pstderr);
PySys_SetObject("__stderr__", pstderr);
Py_DECREF(pstderr);
@ -1170,7 +1185,7 @@ initstdio(void)
goto error;
} /* if (fd < 0) */
PySys_SetObject("__stdin__", std);
PySys_SetObject("stdin", std);
_PySys_SetObjectId(&_PyId_stdin, std);
Py_DECREF(std);
/* Set sys.stdout */
@ -1185,7 +1200,7 @@ initstdio(void)
goto error;
} /* if (fd < 0) */
PySys_SetObject("__stdout__", std);
PySys_SetObject("stdout", std);
_PySys_SetObjectId(&_PyId_stdout, std);
Py_DECREF(std);
#if 1 /* Disable this if you have trouble debugging bootstrap stuff */
@ -1219,7 +1234,7 @@ initstdio(void)
Py_DECREF(std);
goto error;
}
if (PySys_SetObject("stderr", std) < 0) {
if (_PySys_SetObjectId(&_PyId_stderr, std) < 0) {
Py_DECREF(std);
goto error;
}
@ -1281,14 +1296,14 @@ PyRun_InteractiveLoopFlags(FILE *fp, const char *filename_str, PyCompilerFlags *
flags = &local_flags;
local_flags.cf_flags = 0;
}
v = PySys_GetObject("ps1");
v = _PySys_GetObjectId(&PyId_ps1);
if (v == NULL) {
PySys_SetObject("ps1", v = PyUnicode_FromString(">>> "));
_PySys_SetObjectId(&PyId_ps1, v = PyUnicode_FromString(">>> "));
Py_XDECREF(v);
}
v = PySys_GetObject("ps2");
v = _PySys_GetObjectId(&PyId_ps2);
if (v == NULL) {
PySys_SetObject("ps2", v = PyUnicode_FromString("... "));
_PySys_SetObjectId(&PyId_ps2, v = PyUnicode_FromString("... "));
Py_XDECREF(v);
}
err = -1;
@ -1351,7 +1366,7 @@ PyRun_InteractiveOneObject(FILE *fp, PyObject *filename, PyCompilerFlags *flags)
if (fp == stdin) {
/* Fetch encoding from sys.stdin if possible. */
v = PySys_GetObject("stdin");
v = _PySys_GetObjectId(&_PyId_stdin);
if (v && v != Py_None) {
oenc = _PyObject_GetAttrId(v, &PyId_encoding);
if (oenc)
@ -1360,7 +1375,7 @@ PyRun_InteractiveOneObject(FILE *fp, PyObject *filename, PyCompilerFlags *flags)
PyErr_Clear();
}
}
v = PySys_GetObject("ps1");
v = _PySys_GetObjectId(&PyId_ps1);
if (v != NULL) {
v = PyObject_Str(v);
if (v == NULL)
@ -1373,7 +1388,7 @@ PyRun_InteractiveOneObject(FILE *fp, PyObject *filename, PyCompilerFlags *flags)
}
}
}
w = PySys_GetObject("ps2");
w = _PySys_GetObjectId(&PyId_ps2);
if (w != NULL) {
w = PyObject_Str(w);
if (w == NULL)
@ -1752,7 +1767,7 @@ handle_system_exit(void)
if (PyLong_Check(value))
exitcode = (int)PyLong_AsLong(value);
else {
PyObject *sys_stderr = PySys_GetObject("stderr");
PyObject *sys_stderr = _PySys_GetObjectId(&_PyId_stderr);
if (sys_stderr != NULL && sys_stderr != Py_None) {
PyFile_WriteObject(value, sys_stderr, Py_PRINT_RAW);
} else {
@ -1795,11 +1810,11 @@ PyErr_PrintEx(int set_sys_last_vars)
return;
/* Now we know v != NULL too */
if (set_sys_last_vars) {
PySys_SetObject("last_type", exception);
PySys_SetObject("last_value", v);
PySys_SetObject("last_traceback", tb);
_PySys_SetObjectId(&PyId_last_type, exception);
_PySys_SetObjectId(&PyId_last_value, v);
_PySys_SetObjectId(&PyId_last_traceback, tb);
}
hook = PySys_GetObject("excepthook");
hook = _PySys_GetObjectId(&PyId_excepthook);
if (hook) {
PyObject *args = PyTuple_Pack(3, exception, v, tb);
PyObject *result = PyEval_CallObject(hook, args);
@ -2009,7 +2024,7 @@ void
PyErr_Display(PyObject *exception, PyObject *value, PyObject *tb)
{
PyObject *seen;
PyObject *f = PySys_GetObject("stderr");
PyObject *f = _PySys_GetObjectId(&_PyId_stderr);
if (PyExceptionInstance_Check(value)
&& tb != NULL && PyTraceBack_Check(tb)) {
/* Put the traceback on the exception, otherwise it won't get
@ -2107,7 +2122,7 @@ flush_io(void)
/* Save the current exception */
PyErr_Fetch(&type, &value, &traceback);
f = PySys_GetObject("stderr");
f = _PySys_GetObjectId(&_PyId_stderr);
if (f != NULL) {
r = _PyObject_CallMethodId(f, &PyId_flush, "");
if (r)
@ -2115,7 +2130,7 @@ flush_io(void)
else
PyErr_Clear();
}
f = PySys_GetObject("stdout");
f = _PySys_GetObjectId(&_PyId_stdout);
if (f != NULL) {
r = _PyObject_CallMethodId(f, &PyId_flush, "");
if (r)