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bpo-44131: Py_FrozenMain() uses PyConfig_SetBytesArgv() (GH-26201)

Browse source 
Moreover, Py_FrozenMain() relies on Py_InitializeFromConfig() to
handle the PYTHONUNBUFFERED environment variable and configure C
stdio streams like stdout (make the stream unbuffered).
This commit is contained in:
Victor Stinner 2021-05-20 12:08:05 +02:00 committed by GitHub
parent 4d396e7d79
commit 58a993957a
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GPG key ID: 4AEE18F83AFDEB23
4 changed files with 51 additions and 100 deletions
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10
Lib/test/test_embed.py
View file

@ -1484,14 +1484,18 @@ def test_unicode_id_init(self):
@unittest.skipIf(os.name == 'nt',
'Py_FrozenMain is not exported on Windows')
def test_frozenmain(self):
out, err = self.run_embedded_interpreter("test_frozenmain")
exe = os.path.realpath('./argv0')
env = dict(os.environ)
env['PYTHONUNBUFFERED'] = '1'
out, err = self.run_embedded_interpreter("test_frozenmain", env=env)
executable = os.path.realpath('./argv0')
expected = textwrap.dedent(f"""
Frozen Hello World
sys.argv ['./argv0', '-E', 'arg1', 'arg2']
config program_name: ./argv0
config executable: {exe}
config executable: {executable}
config use_environment: 1
config configure_c_stdio: 1
config buffered_stdio: 0
""").lstrip()
self.assertEqual(out, expected)

46
Programs/test_frozenmain.h generated
View file

@ -1,30 +1,28 @@
// Auto-generated by Programs/freeze_test_frozenmain.py
unsigned char M_test_frozenmain[] = {
227,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,4,0,0,0,64,0,0,0,115,106,0,0,0,100,0,
0,7,0,0,0,64,0,0,0,115,86,0,0,0,100,0,
100,1,108,0,90,0,100,0,100,1,108,1,90,1,101,2,
100,2,131,1,1,0,101,2,100,3,101,0,106,3,131,2,
1,0,101,1,160,4,161,0,100,4,25,0,90,5,101,2,
100,5,101,5,100,6,25,0,155,0,157,2,131,1,1,0,
101,2,100,7,101,5,100,8,25,0,155,0,157,2,131,1,
1,0,101,2,100,9,101,5,100,10,25,0,155,0,157,2,
131,1,1,0,100,1,83,0,41,11,233,0,0,0,0,78,
122,18,70,114,111,122,101,110,32,72,101,108,108,111,32,87,
111,114,108,100,122,8,115,121,115,46,97,114,103,118,218,6,
99,111,110,102,105,103,122,21,99,111,110,102,105,103,32,112,
114,111,103,114,97,109,95,110,97,109,101,58,32,90,12,112,
114,111,103,114,97,109,95,110,97,109,101,122,19,99,111,110,
102,105,103,32,101,120,101,99,117,116,97,98,108,101,58,32,
218,10,101,120,101,99,117,116,97,98,108,101,122,24,99,111,
110,102,105,103,32,117,115,101,95,101,110,118,105,114,111,110,
109,101,110,116,58,32,90,15,117,115,101,95,101,110,118,105,
114,111,110,109,101,110,116,41,6,218,3,115,121,115,90,17,
95,116,101,115,116,105,110,116,101,114,110,97,108,99,97,112,
105,218,5,112,114,105,110,116,218,4,97,114,103,118,90,11,
103,101,116,95,99,111,110,102,105,103,115,114,2,0,0,0,
169,0,114,7,0,0,0,114,7,0,0,0,250,18,116,101,
115,116,95,102,114,111,122,101,110,109,97,105,110,46,112,121,
218,8,60,109,111,100,117,108,101,62,1,0,0,0,115,16,
0,0,0,8,3,8,1,8,2,12,1,12,1,18,1,18,
1,22,1,243,0,0,0,0,
1,0,101,1,160,4,161,0,100,4,25,0,90,5,100,5,
68,0,93,14,90,6,101,2,100,6,101,6,155,0,100,7,
101,5,101,6,25,0,155,0,157,4,131,1,1,0,113,26,
100,1,83,0,41,8,233,0,0,0,0,78,122,18,70,114,
111,122,101,110,32,72,101,108,108,111,32,87,111,114,108,100,
122,8,115,121,115,46,97,114,103,118,218,6,99,111,110,102,
105,103,41,5,90,12,112,114,111,103,114,97,109,95,110,97,
109,101,218,10,101,120,101,99,117,116,97,98,108,101,90,15,
117,115,101,95,101,110,118,105,114,111,110,109,101,110,116,90,
17,99,111,110,102,105,103,117,114,101,95,99,95,115,116,100,
105,111,90,14,98,117,102,102,101,114,101,100,95,115,116,100,
105,111,122,7,99,111,110,102,105,103,32,122,2,58,32,41,
7,218,3,115,121,115,90,17,95,116,101,115,116,105,110,116,
101,114,110,97,108,99,97,112,105,218,5,112,114,105,110,116,
218,4,97,114,103,118,90,11,103,101,116,95,99,111,110,102,
105,103,115,114,2,0,0,0,218,3,107,101,121,169,0,114,
8,0,0,0,114,8,0,0,0,250,18,116,101,115,116,95,
102,114,111,122,101,110,109,97,105,110,46,112,121,218,8,60,
109,111,100,117,108,101,62,1,0,0,0,115,16,0,0,0,
8,3,8,1,8,2,12,1,12,1,8,1,26,7,4,249,
243,0,0,0,0,
};

11
Programs/test_frozenmain.py
View file

@ -7,6 +7,11 @@
print("Frozen Hello World")
print("sys.argv", sys.argv)
config = _testinternalcapi.get_configs()['config']
print(f"config program_name: {config['program_name']}")
print(f"config executable: {config['executable']}")
print(f"config use_environment: {config['use_environment']}")
for key in (
'program_name',
'executable',
'use_environment',
'configure_c_stdio',
'buffered_stdio',
):
print(f"config {key}: {config[key]}")

84
Python/frozenmain.c
View file

@ -20,74 +20,28 @@ Py_FrozenMain(int argc, char **argv)
Py_ExitStatusException(status);
}
const char *p;
int i, n, sts = 1;
int inspect = 0;
int unbuffered = 0;
char *oldloc = NULL;
wchar_t **argv_copy = NULL;
/* We need a second copies, as Python might modify the first one. */
wchar_t **argv_copy2 = NULL;
if (argc > 0) {
argv_copy = PyMem_RawMalloc(sizeof(wchar_t*) * argc);
argv_copy2 = PyMem_RawMalloc(sizeof(wchar_t*) * argc);
if (!argv_copy || !argv_copy2) {
fprintf(stderr, "out of memory\n");
goto error;
}
}
PyConfig config;
PyConfig_InitPythonConfig(&config);
config.pathconfig_warnings = 0; /* Suppress errors from getpath.c */
// Suppress errors from getpath.c
config.pathconfig_warnings = 0;
// Don't parse command line options like -E
config.parse_argv = 0;
status = PyConfig_SetBytesArgv(&config, argc, argv);
if (PyStatus_Exception(status)) {
PyConfig_Clear(&config);
Py_ExitStatusException(status);
}
const char *p;
int inspect = 0;
if ((p = Py_GETENV("PYTHONINSPECT")) && *p != '\0') {
inspect = 1;
}
if ((p = Py_GETENV("PYTHONUNBUFFERED")) && *p != '\0') {
unbuffered = 1;
}
if (unbuffered) {
setbuf(stdin, (char *)NULL);
setbuf(stdout, (char *)NULL);
setbuf(stderr, (char *)NULL);
}
oldloc = _PyMem_RawStrdup(setlocale(LC_ALL, NULL));
if (!oldloc) {
fprintf(stderr, "out of memory\n");
goto error;
}
setlocale(LC_ALL, "");
for (i = 0; i < argc; i++) {
argv_copy[i] = Py_DecodeLocale(argv[i], NULL);
argv_copy2[i] = argv_copy[i];
if (!argv_copy[i]) {
fprintf(stderr,
"Unable to decode the command line argument #%i\n",
i + 1);
argc = i;
goto error;
}
}
setlocale(LC_ALL, oldloc);
PyMem_RawFree(oldloc);
oldloc = NULL;
#ifdef MS_WINDOWS
PyInitFrozenExtensions();
#endif /* MS_WINDOWS */
if (argc >= 1) {
status = PyConfig_SetString(&config, &config.program_name,
argv_copy[0]);
if (PyStatus_Exception(status)) {
PyConfig_Clear(&config);
Py_ExitStatusException(status);
}
}
status = Py_InitializeFromConfig(&config);
PyConfig_Clear(&config);
@ -104,9 +58,8 @@ Py_FrozenMain(int argc, char **argv)
Py_GetVersion(), Py_GetCopyright());
}
PySys_SetArgv(argc, argv_copy);
n = PyImport_ImportFrozenModule("__main__");
int sts = 1;
int n = PyImport_ImportFrozenModule("__main__");
if (n == 0) {
Py_FatalError("the __main__ module is not frozen");
}
@ -128,14 +81,5 @@ Py_FrozenMain(int argc, char **argv)
if (Py_FinalizeEx() < 0) {
sts = 120;
}
error:
PyMem_RawFree(argv_copy);
if (argv_copy2) {
for (i = 0; i < argc; i++)
PyMem_RawFree(argv_copy2[i]);
PyMem_RawFree(argv_copy2);
}
PyMem_RawFree(oldloc);
return sts;
}