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bpo-44131: Test Py_FrozenMain() (GH-26126) 

* Add test_frozenmain to test_embed
* Add Programs/test_frozenmain.py
* Add Programs/freeze_test_frozenmain.py
* Add Programs/test_frozenmain.h
* Add make regen-test-frozenmain
* Add test_frozenmain command to Programs/_testembed
* _testembed.c: add error(msg) function
This commit is contained in:
Victor Stinner 2021-05-17 23:48:35 +02:00 committed by GitHub
parent f32c7950e0
commit eaede0ded7
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
10 changed files with 203 additions and 32 deletions
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1
.gitattributes vendored
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@ -57,6 +57,7 @@ Doc/library/token-list.inc linguist-generated=true
Include/token.h linguist-generated=true
Lib/token.py linguist-generated=true
Parser/token.c linguist-generated=true
Programs/test_frozenmain.h linguist-generated=true
# Language aware diff headers
# https://tekin.co.uk/2020/10/better-git-diff-output-for-ruby-python-elixir-and-more

15
Lib/test/test_embed.py
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@ -1480,6 +1480,21 @@ class MiscTests(EmbeddingTestsMixin, unittest.TestCase):
# when Python is initialized multiples times.
self.run_embedded_interpreter("test_unicode_id_init")
# See bpo-44133
@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')
expected = textwrap.dedent(f"""
Frozen Hello World
sys.argv ['./argv0', '-E', 'arg1', 'arg2']
config program_name: ./argv0
config executable: {exe}
config use_environment: 1
""").lstrip()
self.assertEqual(out, expected)
class StdPrinterTests(EmbeddingTestsMixin, unittest.TestCase):
# Test PyStdPrinter_Type which is used by _PySys_SetPreliminaryStderr():

12
Makefile.pre.in
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@ -720,6 +720,14 @@ Makefile Modules/config.c: Makefile.pre \
@mv config.c Modules
@echo "The Makefile was updated, you may need to re-run make."
regen-test-frozenmain: $(BUILDPYTHON)
# Regenerate Programs/test_frozenmain.h
# from Programs/test_frozenmain.py
# using Programs/freeze_test_frozenmain.py
$(RUNSHARED) ./$(BUILDPYTHON) Programs/freeze_test_frozenmain.py Programs/test_frozenmain.h
Programs/test_frozenmain.h: Programs/freeze_test_frozenmain.py Programs/test_frozenmain.py
$(MAKE) regen-test-frozenmain
Programs/_testembed: Programs/_testembed.o $(LIBRARY_DEPS)
$(LINKCC) $(PY_CORE_LDFLAGS) $(LINKFORSHARED) -o $@ Programs/_testembed.o $(BLDLIBRARY) $(LIBS) $(MODLIBS) $(SYSLIBS)
@ -763,7 +771,7 @@ regen-limited-abi: all
regen-all: regen-opcode regen-opcode-targets regen-typeslots \
regen-token regen-ast regen-keyword regen-importlib clinic \
regen-pegen-metaparser regen-pegen regen-frozen
regen-pegen-metaparser regen-pegen regen-frozen regen-test-frozenmain
@echo
@echo "Note: make regen-stdlib-module-names and autoconf should be run manually"
@ -794,7 +802,7 @@ Modules/getpath.o: $(srcdir)/Modules/getpath.c Makefile
Programs/python.o: $(srcdir)/Programs/python.c
$(MAINCC) -c $(PY_CORE_CFLAGS) -o $@ $(srcdir)/Programs/python.c
Programs/_testembed.o: $(srcdir)/Programs/_testembed.c
Programs/_testembed.o: $(srcdir)/Programs/_testembed.c Programs/test_frozenmain.h
$(MAINCC) -c $(PY_CORE_CFLAGS) -o $@ $(srcdir)/Programs/_testembed.c
Modules/_sre.o: $(srcdir)/Modules/_sre.c $(srcdir)/Modules/sre.h $(srcdir)/Modules/sre_constants.h $(srcdir)/Modules/sre_lib.h

2
Misc/NEWS.d/next/Tests/2021-05-14-14-13-44.bpo-44131.YPizoC.rst Normal file
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@ -0,0 +1,2 @@
Add test_frozenmain to test_embed to test the :c:func:`Py_FrozenMain` C
function. Patch by Victor Stinner.

72
Programs/_testembed.c
View File

@ -27,6 +27,14 @@
_Py_COMP_DIAG_PUSH
_Py_COMP_DIAG_IGNORE_DEPR_DECLS
static void error(const char *msg)
{
fprintf(stderr, "ERROR: %s\n", msg);
fflush(stderr);
}
static void _testembed_Py_Initialize(void)
{
Py_SetProgramName(PROGRAM_NAME);
@ -239,7 +247,7 @@ static void bpo20891_thread(void *lockp)
PyGILState_STATE state = PyGILState_Ensure();
if (!PyGILState_Check()) {
fprintf(stderr, "PyGILState_Check failed!");
error("PyGILState_Check failed!");
abort();
}
@ -259,7 +267,7 @@ static int test_bpo20891(void)
crash. */
PyThread_type_lock lock = PyThread_allocate_lock();
if (!lock) {
fprintf(stderr, "PyThread_allocate_lock failed!");
error("PyThread_allocate_lock failed!");
return 1;
}
@ -267,7 +275,7 @@ static int test_bpo20891(void)
unsigned long thrd = PyThread_start_new_thread(bpo20891_thread, &lock);
if (thrd == PYTHREAD_INVALID_THREAD_ID) {
fprintf(stderr, "PyThread_start_new_thread failed!");
error("PyThread_start_new_thread failed!");
return 1;
}
PyThread_acquire_lock(lock, WAIT_LOCK);
@ -1397,12 +1405,12 @@ static int test_init_setpath(void)
{
char *env = getenv("TESTPATH");
if (!env) {
fprintf(stderr, "missing TESTPATH env var\n");
error("missing TESTPATH env var");
return 1;
}
wchar_t *path = Py_DecodeLocale(env, NULL);
if (path == NULL) {
fprintf(stderr, "failed to decode TESTPATH\n");
error("failed to decode TESTPATH");
return 1;
}
Py_SetPath(path);
@ -1430,12 +1438,12 @@ static int test_init_setpath_config(void)
char *env = getenv("TESTPATH");
if (!env) {
fprintf(stderr, "missing TESTPATH env var\n");
error("missing TESTPATH env var");
return 1;
}
wchar_t *path = Py_DecodeLocale(env, NULL);
if (path == NULL) {
fprintf(stderr, "failed to decode TESTPATH\n");
error("failed to decode TESTPATH");
return 1;
}
Py_SetPath(path);
@ -1459,12 +1467,12 @@ static int test_init_setpythonhome(void)
{
char *env = getenv("TESTHOME");
if (!env) {
fprintf(stderr, "missing TESTHOME env var\n");
error("missing TESTHOME env var");
return 1;
}
wchar_t *home = Py_DecodeLocale(env, NULL);
if (home == NULL) {
fprintf(stderr, "failed to decode TESTHOME\n");
error("failed to decode TESTHOME");
return 1;
}
Py_SetPythonHome(home);
@ -1726,6 +1734,48 @@ static int test_unicode_id_init(void)
}
#ifndef MS_WINDOWS
#include "test_frozenmain.h" // M_test_frozenmain
static int test_frozenmain(void)
{
// Get "_frozen_importlib" and "_frozen_importlib_external"
// from PyImport_FrozenModules
const struct _frozen *importlib = NULL, *importlib_external = NULL;
for (const struct _frozen *mod = PyImport_FrozenModules; mod->name != NULL; mod++) {
if (strcmp(mod->name, "_frozen_importlib") == 0) {
importlib = mod;
}
else if (strcmp(mod->name, "_frozen_importlib_external") == 0) {
importlib_external = mod;
}
}
if (importlib == NULL || importlib_external == NULL) {
error("cannot find frozen importlib and importlib_external");
return 1;
}
static struct _frozen frozen_modules[4] = {
{0, 0, 0}, // importlib
{0, 0, 0}, // importlib_external
{"__main__", M_test_frozenmain, sizeof(M_test_frozenmain)},
{0, 0, 0} // sentinel
};
frozen_modules[0] = *importlib;
frozen_modules[1] = *importlib_external;
char* argv[] = {
"./argv0",
"-E",
"arg1",
"arg2",
};
PyImport_FrozenModules = frozen_modules;
return Py_FrozenMain(Py_ARRAY_LENGTH(argv), argv);
}
#endif // !MS_WINDOWS
// List frozen modules.
// Command used by Tools/scripts/generate_stdlib_module_names.py script.
static int list_frozen(void)
@ -1811,11 +1861,15 @@ static struct TestCase TestCases[] = {
{"test_audit_run_stdin", test_audit_run_stdin},
{"test_unicode_id_init", test_unicode_id_init},
#ifndef MS_WINDOWS
{"test_frozenmain", test_frozenmain},
#endif
{"list_frozen", list_frozen},
{NULL, NULL}
};
int main(int argc, char *argv[])
{
if (argc > 1) {

48
Programs/freeze_test_frozenmain.py Normal file
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@ -0,0 +1,48 @@
import marshal
import tokenize
import os.path
import sys
PROGRAM_DIR = os.path.dirname(__file__)
SRC_DIR = os.path.dirname(PROGRAM_DIR)
def writecode(fp, mod, data):
print('unsigned char M_%s[] = {' % mod, file=fp)
indent = ' ' * 4
for i in range(0, len(data), 16):
print(indent, file=fp, end='')
for c in bytes(data[i:i+16]):
print('%d,' % c, file=fp, end='')
print('', file=fp)
print('};', file=fp)
def dump(fp, filename, name):
# Strip the directory to get reproducible marshal dump
code_filename = os.path.basename(filename)
with tokenize.open(filename) as source_fp:
source = source_fp.read()
code = compile(source, code_filename, 'exec')
data = marshal.dumps(code)
writecode(fp, name, data)
def main():
if len(sys.argv) < 2:
print(f"usage: {sys.argv[0]} filename")
sys.exit(1)
filename = sys.argv[1]
with open(filename, "w") as fp:
print("// Auto-generated by Programs/freeze_test_frozenmain.py", file=fp)
frozenmain = os.path.join(PROGRAM_DIR, 'test_frozenmain.py')
dump(fp, frozenmain, 'test_frozenmain')
print(f"{filename} written")
if __name__ == "__main__":
main()

30
Programs/test_frozenmain.h generated Normal file
View File

@ -0,0 +1,30 @@
// 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,
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,
0,0,0,8,0,8,1,8,2,12,1,12,1,18,1,18,
1,22,1,243,0,0,0,0,
};

9
Programs/test_frozenmain.py Normal file
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@ -0,0 +1,9 @@
import sys
import _testinternalcapi
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']}")

22
Python/frozenmain.c
View File

@ -1,4 +1,3 @@
/* Python interpreter main program for frozen scripts */
#include "Python.h"
@ -43,10 +42,12 @@ Py_FrozenMain(int argc, char **argv)
PyConfig_InitPythonConfig(&config);
config.pathconfig_warnings = 0; /* Suppress errors from getpath.c */
if ((p = Py_GETENV("PYTHONINSPECT")) && *p != '\0')
if ((p = Py_GETENV("PYTHONINSPECT")) && *p != '\0') {
inspect = 1;
if ((p = Py_GETENV("PYTHONUNBUFFERED")) && *p != '\0')
}
if ((p = Py_GETENV("PYTHONUNBUFFERED")) && *p != '\0') {
unbuffered = 1;
}
if (unbuffered) {
setbuf(stdin, (char *)NULL);
@ -65,7 +66,8 @@ Py_FrozenMain(int argc, char **argv)
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",
fprintf(stderr,
"Unable to decode the command line argument #%i\n",
i + 1);
argc = i;
goto error;
@ -97,24 +99,28 @@ Py_FrozenMain(int argc, char **argv)
PyWinFreeze_ExeInit();
#endif
if (Py_VerboseFlag)
if (Py_VerboseFlag) {
fprintf(stderr, "Python %s\n%s\n",
Py_GetVersion(), Py_GetCopyright());
}
PySys_SetArgv(argc, argv_copy);
n = PyImport_ImportFrozenModule("__main__");
if (n == 0)
if (n == 0) {
Py_FatalError("the __main__ module is not frozen");
}
if (n < 0) {
PyErr_Print();
sts = 1;
}
else
else {
sts = 0;
}
if (inspect && isatty((int)fileno(stdin)))
if (inspect && isatty((int)fileno(stdin))) {
sts = PyRun_AnyFile(stdin, "<stdin>") != 0;
}
#ifdef MS_WINDOWS
PyWinFreeze_ExeTerm();

20
Tools/freeze/makefreeze.py
View File

@ -74,14 +74,12 @@ def makefreeze(base, dict, debug=0, entry_point=None, fail_import=()):
# Write a C initializer for a module containing the frozen python code.
# The array is called M_<mod>.
def writecode(outfp, mod, str):
outfp.write('unsigned char M_%s[] = {' % mod)
for i in range(0, len(str), 16):
outfp.write('\n\t')
for c in bytes(str[i:i+16]):
outfp.write('%d,' % c)
outfp.write('\n};\n')
## def writecode(outfp, mod, str):
## outfp.write('unsigned char M_%s[%d] = "%s";\n' % (mod, len(str),
## '\\"'.join(map(lambda s: repr(s)[1:-1], str.split('"')))))
def writecode(fp, mod, data):
print('unsigned char M_%s[] = {' % mod, file=fp)
indent = ' ' * 4
for i in range(0, len(data), 16):
print(indent, file=fp, end='')
for c in bytes(data[i:i+16]):
print('%d,' % c, file=fp, end='')
print('', file=fp)
print('};', file=fp)