Staging
v0.8.1
v0.8.1
https://github.com/python/cpython
Tip revision: 1da43e5e916949c8e849e656d9d05fa4b9d6836c authored by Benjamin Peterson on 26 June 2009, 13:21:52 UTC
rearrange the sections of the README, so they'll hopefully be more in the order people will interested in
rearrange the sections of the README, so they'll hopefully be more in the order people will interested in
Tip revision: 1da43e5
makefreeze.py
import marshal
import bkfile
# Write a file containing frozen code for the modules in the dictionary.
header = """
#include "Python.h"
static struct _frozen _PyImport_FrozenModules[] = {
"""
trailer = """\
{0, 0, 0} /* sentinel */
};
"""
# if __debug__ == 0 (i.e. -O option given), set Py_OptimizeFlag in frozen app.
default_entry_point = """
int
main(int argc, char **argv)
{
extern int Py_FrozenMain(int, char **);
""" + ((not __debug__ and """
Py_OptimizeFlag++;
""") or "") + """
PyImport_FrozenModules = _PyImport_FrozenModules;
return Py_FrozenMain(argc, argv);
}
"""
def makefreeze(base, dict, debug=0, entry_point=None, fail_import=()):
if entry_point is None: entry_point = default_entry_point
done = []
files = []
mods = sorted(dict.keys())
for mod in mods:
m = dict[mod]
mangled = "__".join(mod.split("."))
if m.__code__:
file = 'M_' + mangled + '.c'
outfp = bkfile.open(base + file, 'w')
files.append(file)
if debug:
print("freezing", mod, "...")
str = marshal.dumps(m.__code__)
size = len(str)
if m.__path__:
# Indicate package by negative size
size = -size
done.append((mod, mangled, size))
writecode(outfp, mangled, str)
outfp.close()
if debug:
print("generating table of frozen modules")
outfp = bkfile.open(base + 'frozen.c', 'w')
for mod, mangled, size in done:
outfp.write('extern unsigned char M_%s[];\n' % mangled)
outfp.write(header)
for mod, mangled, size in done:
outfp.write('\t{"%s", M_%s, %d},\n' % (mod, mangled, size))
outfp.write('\n')
# The following modules have a NULL code pointer, indicating
# that the prozen program should not search for them on the host
# system. Importing them will *always* raise an ImportError.
# The zero value size is never used.
for mod in fail_import:
outfp.write('\t{"%s", NULL, 0},\n' % (mod,))
outfp.write(trailer)
outfp.write(entry_point)
outfp.close()
return files
# 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('"')))))