def test_cdll_life_time(self):
from pypy.translator.tool.cbuild import ExternalCompilationInfo
from pypy.translator.platform import platform
from pypy.tool.udir import udir
c_file = udir.ensure("test_libffi", dir=1).join("xlib.c")
c_file.write(py.code.Source('''
long fun(long i) {
return i + 42;
}
'''))
eci = ExternalCompilationInfo(export_symbols=['fun'])
lib_name = str(platform.compile([c_file], eci, 'x', standalone=False))
lib = CDLL(lib_name)
slong = cast_type_to_ffitype(rffi.LONG)
fun = lib.getrawpointer('fun', [slong], slong)
del lib # already delete here
buffer = lltype.malloc(rffi.LONGP.TO, 2, flavor='raw')
buffer[0] = 200
buffer[1] = -1
fun.call([rffi.cast(rffi.VOIDP, buffer)],
rffi.cast(rffi.VOIDP, rffi.ptradd(buffer, 1)))
assert buffer[1] == 242
lltype.free(buffer, flavor='raw')
del fun
assert not ALLOCATED
def test_cdll_life_time(self):
from pypy.translator.tool.cbuild import ExternalCompilationInfo
from pypy.translator.platform import platform
from pypy.tool.udir import udir
c_file = udir.ensure("test_libffi", dir=1).join("xlib.c")
c_file.write(
py.code.Source('''
long fun(long i) {
return i + 42;
}
'''))
eci = ExternalCompilationInfo(export_symbols=['fun'])
lib_name = str(platform.compile([c_file], eci, 'x', standalone=False))
lib = CDLL(lib_name)
slong = cast_type_to_ffitype(rffi.LONG)
fun = lib.getrawpointer('fun', [slong], slong)
del lib # already delete here
buffer = lltype.malloc(rffi.LONGP.TO, 2, flavor='raw')
buffer[0] = 200
buffer[1] = -1
fun.call([rffi.cast(rffi.VOIDP, buffer)],
rffi.cast(rffi.VOIDP, rffi.ptradd(buffer, 1)))
assert buffer[1] == 242
lltype.free(buffer, flavor='raw')
del fun
assert not ALLOCATED
def test_struct_by_val(self):
import platform
if platform.machine() == 'x86_64':
py.test.skip("Segfaults on x86_64 because small structures "
"may be passed in registers and "
"c_elements must not be null")
from pypy.translator.tool.cbuild import ExternalCompilationInfo
from pypy.translator.platform import platform
from pypy.tool.udir import udir
c_file = udir.ensure("test_libffi", dir=1).join("xlib.c")
c_file.write(
py.code.Source('''
#include <stdlib.h>
#include <stdio.h>
struct x_y {
long x;
long y;
};
long sum_x_y(struct x_y s) {
return s.x + s.y;
}
long sum_x_y_p(struct x_y *p) {
return p->x + p->y;
}
'''))
eci = ExternalCompilationInfo(export_symbols=['sum_x_y'])
lib_name = str(platform.compile([c_file], eci, 'x', standalone=False))
lib = CDLL(lib_name)
slong = cast_type_to_ffitype(rffi.LONG)
size = slong.c_size * 2
alignment = slong.c_alignment
tp = make_struct_ffitype(size, alignment)
sum_x_y = lib.getrawpointer('sum_x_y', [tp], slong)
buffer = lltype.malloc(rffi.LONGP.TO, 3, flavor='raw')
buffer[0] = 200
buffer[1] = 220
buffer[2] = 666
sum_x_y.call([rffi.cast(rffi.VOIDP, buffer)],
rffi.cast(rffi.VOIDP, rffi.ptradd(buffer, 2)))
assert buffer[2] == 420
lltype.free(buffer, flavor='raw')
del sum_x_y
lltype.free(tp, flavor='raw')
del lib
assert not ALLOCATED
def test_struct_by_val(self):
import platform
if platform.machine() == 'x86_64':
py.test.skip("Segfaults on x86_64 because small structures "
"may be passed in registers and "
"c_elements must not be null")
from pypy.translator.tool.cbuild import ExternalCompilationInfo
from pypy.translator.platform import platform
from pypy.tool.udir import udir
c_file = udir.ensure("test_libffi", dir=1).join("xlib.c")
c_file.write(py.code.Source('''
#include <stdlib.h>
#include <stdio.h>
struct x_y {
long x;
long y;
};
long sum_x_y(struct x_y s) {
return s.x + s.y;
}
long sum_x_y_p(struct x_y *p) {
return p->x + p->y;
}
'''))
eci = ExternalCompilationInfo(export_symbols=['sum_x_y'])
lib_name = str(platform.compile([c_file], eci, 'x', standalone=False))
lib = CDLL(lib_name)
slong = cast_type_to_ffitype(rffi.LONG)
size = slong.c_size*2
alignment = slong.c_alignment
tp = make_struct_ffitype(size, alignment)
sum_x_y = lib.getrawpointer('sum_x_y', [tp], slong)
buffer = lltype.malloc(rffi.LONGP.TO, 3, flavor='raw')
buffer[0] = 200
buffer[1] = 220
buffer[2] = 666
sum_x_y.call([rffi.cast(rffi.VOIDP, buffer)],
rffi.cast(rffi.VOIDP, rffi.ptradd(buffer, 2)))
assert buffer[2] == 420
lltype.free(buffer, flavor='raw')
del sum_x_y
lltype.free(tp, flavor='raw')
del lib
assert not ALLOCATED
def test_ret_struct_val(self):
import platform
if platform.machine() == 'x86_64':
py.test.skip("Segfaults on x86_64 because small structures "
"may be passed in registers and "
"c_elements must not be null")
from pypy.translator.tool.cbuild import ExternalCompilationInfo
from pypy.translator.platform import platform
from pypy.tool.udir import udir
c_file = udir.ensure("test_libffi", dir=1).join("xlib.c")
c_file.write(py.code.Source('''
#include <stdlib.h>
#include <stdio.h>
struct s2h {
short x;
short y;
};
struct s2h give(short x, short y) {
struct s2h out;
out.x = x;
out.y = y;
return out;
}
struct s2h perturb(struct s2h inp) {
inp.x *= 2;
inp.y *= 3;
return inp;
}
'''))
eci = ExternalCompilationInfo(export_symbols=['give', 'perturb'])
lib_name = str(platform.compile([c_file], eci, 'x', standalone=False))
lib = CDLL(lib_name)
size = ffi_type_sshort.c_size*2
alignment = ffi_type_sshort.c_alignment
tp = make_struct_ffitype(size, alignment)
give = lib.getrawpointer('give', [ffi_type_sshort, ffi_type_sshort],
tp)
inbuffer = lltype.malloc(rffi.SHORTP.TO, 2, flavor='raw')
inbuffer[0] = rffi.cast(rffi.SHORT, 40)
inbuffer[1] = rffi.cast(rffi.SHORT, 72)
outbuffer = lltype.malloc(rffi.SHORTP.TO, 2, flavor='raw')
give.call([rffi.cast(rffi.VOIDP, inbuffer),
rffi.cast(rffi.VOIDP, rffi.ptradd(inbuffer, 1))],
rffi.cast(rffi.VOIDP, outbuffer))
assert outbuffer[0] == 40
assert outbuffer[1] == 72
perturb = lib.getrawpointer('perturb', [tp], tp)
inbuffer[0] = rffi.cast(rffi.SHORT, 7)
inbuffer[1] = rffi.cast(rffi.SHORT, 11)
perturb.call([rffi.cast(rffi.VOIDP, inbuffer)],
rffi.cast(rffi.VOIDP, outbuffer))
assert inbuffer[0] == 7
assert inbuffer[1] == 11
assert outbuffer[0] == 14
assert outbuffer[1] == 33
lltype.free(outbuffer, flavor='raw')
lltype.free(inbuffer, flavor='raw')
del give
del perturb
lltype.free(tp, flavor='raw')
del lib
assert not ALLOCATED
def test_ret_struct_val(self):
import platform
if platform.machine() == 'x86_64':
py.test.skip("Segfaults on x86_64 because small structures "
"may be passed in registers and "
"c_elements must not be null")
from pypy.translator.tool.cbuild import ExternalCompilationInfo
from pypy.translator.platform import platform
from pypy.tool.udir import udir
c_file = udir.ensure("test_libffi", dir=1).join("xlib.c")
c_file.write(
py.code.Source('''
#include <stdlib.h>
#include <stdio.h>
struct s2h {
short x;
short y;
};
struct s2h give(short x, short y) {
struct s2h out;
out.x = x;
out.y = y;
return out;
}
struct s2h perturb(struct s2h inp) {
inp.x *= 2;
inp.y *= 3;
return inp;
}
'''))
eci = ExternalCompilationInfo(export_symbols=['give', 'perturb'])
lib_name = str(platform.compile([c_file], eci, 'x', standalone=False))
lib = CDLL(lib_name)
size = ffi_type_sshort.c_size * 2
alignment = ffi_type_sshort.c_alignment
tp = make_struct_ffitype(size, alignment)
give = lib.getrawpointer('give', [ffi_type_sshort, ffi_type_sshort],
tp)
inbuffer = lltype.malloc(rffi.SHORTP.TO, 2, flavor='raw')
inbuffer[0] = rffi.cast(rffi.SHORT, 40)
inbuffer[1] = rffi.cast(rffi.SHORT, 72)
outbuffer = lltype.malloc(rffi.SHORTP.TO, 2, flavor='raw')
give.call([
rffi.cast(rffi.VOIDP, inbuffer),
rffi.cast(rffi.VOIDP, rffi.ptradd(inbuffer, 1))
], rffi.cast(rffi.VOIDP, outbuffer))
assert outbuffer[0] == 40
assert outbuffer[1] == 72
perturb = lib.getrawpointer('perturb', [tp], tp)
inbuffer[0] = rffi.cast(rffi.SHORT, 7)
inbuffer[1] = rffi.cast(rffi.SHORT, 11)
perturb.call([rffi.cast(rffi.VOIDP, inbuffer)],
rffi.cast(rffi.VOIDP, outbuffer))
assert inbuffer[0] == 7
assert inbuffer[1] == 11
assert outbuffer[0] == 14
assert outbuffer[1] == 33
lltype.free(outbuffer, flavor='raw')
lltype.free(inbuffer, flavor='raw')
del give
del perturb
lltype.free(tp, flavor='raw')
del lib
assert not ALLOCATED