You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
42 lines
1.1 KiB
42 lines
1.1 KiB
import os
|
|
import sys
|
|
import fcntl
|
|
import hashlib
|
|
from cffi import FFI
|
|
|
|
TMPDIR = "/tmp/ccache"
|
|
|
|
def ffi_wrap(name, c_code, c_header, tmpdir=TMPDIR, cflags="", libraries=[]):
|
|
cache = name + "_" + hashlib.sha1(c_code).hexdigest()
|
|
try:
|
|
os.mkdir(tmpdir)
|
|
except OSError:
|
|
pass
|
|
|
|
fd = os.open(tmpdir, 0)
|
|
fcntl.flock(fd, fcntl.LOCK_EX)
|
|
try:
|
|
sys.path.append(tmpdir)
|
|
try:
|
|
mod = __import__(cache)
|
|
except Exception:
|
|
print "cache miss", cache
|
|
compile_code(cache, c_code, c_header, tmpdir, cflags, libraries)
|
|
mod = __import__(cache)
|
|
finally:
|
|
os.close(fd)
|
|
|
|
return mod.ffi, mod.lib
|
|
|
|
def compile_code(name, c_code, c_header, directory, cflags="", libraries=[]):
|
|
ffibuilder = FFI()
|
|
ffibuilder.set_source(name, c_code, source_extension='.cpp', libraries=libraries)
|
|
ffibuilder.cdef(c_header)
|
|
os.environ['OPT'] = "-fwrapv -O2 -DNDEBUG -std=c++11"
|
|
os.environ['CFLAGS'] = cflags
|
|
ffibuilder.compile(verbose=True, debug=False, tmpdir=directory)
|
|
|
|
def wrap_compiled(name, directory):
|
|
sys.path.append(directory)
|
|
mod = __import__(name)
|
|
return mod.ffi, mod.lib
|
|
|