Python ptr示例

示例#1

文件： test_signature.py 项目： charred/pypy

def test_ptr():
    policy = LowLevelAnnotatorPolicy()
    @signature(types.ptr(rstr.STR), returns=types.none())
    def f(buf):
        pass
    argtype = getsig(f, policy=policy)[0]
    assert isinstance(argtype, model.SomePtr)
    assert argtype.ll_ptrtype.TO == rstr.STR

    def g():
        f(rstr.mallocstr(10))
    getsig(g, policy=policy)

示例#2

def test_ptr():
    policy = LowLevelAnnotatorPolicy()
    @signature(types.ptr(rstr.STR), returns=types.none())
    def f(buf):
        pass
    argtype = getsig(f, policy=policy)[0]
    assert isinstance(argtype, SomePtr)
    assert argtype.ll_ptrtype.TO == rstr.STR

    def g():
        f(rstr.mallocstr(10))
    getsig(g, policy=policy)

示例#3

文件： rsandbox.py 项目： sota/pypy-old

# a version of os.read() and os.write() that are not mangled
# by the sandboxing mechanism
ll_read_not_sandboxed = rposix.external('read',
                                        [rffi.INT, rffi.CCHARP, rffi.SIZE_T],
                                        rffi.SIZE_T,
                                        sandboxsafe=True)

ll_write_not_sandboxed = rposix.external('write',
                                         [rffi.INT, rffi.CCHARP, rffi.SIZE_T],
                                         rffi.SIZE_T,
                                         sandboxsafe=True)


@signature(types.int(),
           types.ptr(rffi.CCHARP.TO),
           types.int(),
           returns=types.none())
def writeall_not_sandboxed(fd, buf, length):
    while length > 0:
        size = rffi.cast(rffi.SIZE_T, length)
        count = rffi.cast(lltype.Signed, ll_write_not_sandboxed(fd, buf, size))
        if count <= 0:
            raise IOError
        length -= count
        buf = lltype.direct_ptradd(lltype.direct_arrayitems(buf), count)
        buf = rffi.cast(rffi.CCHARP, buf)


class FdLoader(rmarshal.Loader):
    def __init__(self, fd):

示例#4

文件： rsandbox.py 项目： Darriall/pypy

# a version of os.read() and os.write() that are not mangled
# by the sandboxing mechanism
ll_read_not_sandboxed = rffi.llexternal('read',
                                        [rffi.INT, rffi.CCHARP, rffi.SIZE_T],
                                        rffi.SIZE_T,
                                        sandboxsafe=True)

ll_write_not_sandboxed = rffi.llexternal('write',
                                         [rffi.INT, rffi.CCHARP, rffi.SIZE_T],
                                         rffi.SIZE_T,
                                         sandboxsafe=True)


@signature(types.int(), types.ptr(rffi.CCHARP.TO), types.int(), returns=types.none())
def writeall_not_sandboxed(fd, buf, length):
    while length > 0:
        size = rffi.cast(rffi.SIZE_T, length)
        count = rffi.cast(lltype.Signed, ll_write_not_sandboxed(fd, buf, size))
        if count <= 0:
            raise IOError
        length -= count
        buf = lltype.direct_ptradd(lltype.direct_arrayitems(buf), count)
        buf = rffi.cast(rffi.CCHARP, buf)


class FdLoader(rmarshal.Loader):
    def __init__(self, fd):
        rmarshal.Loader.__init__(self, "")
        self.fd = fd

示例#5

文件： rsandbox.py 项目： sbw111/lab4

# a version of os.read() and os.write() that are not mangled
# by the sandboxing mechanism
ll_read_not_sandboxed = rposix.external('read',
                                        [rffi.INT, rffi.CCHARP, rffi.SIZE_T],
                                        rffi.SIZE_T,
                                        sandboxsafe=True,
                                        _nowrapper=True)

ll_write_not_sandboxed = rposix.external('write',
                                         [rffi.INT, rffi.CCHARP, rffi.SIZE_T],
                                         rffi.SIZE_T,
                                         sandboxsafe=True,
                                         _nowrapper=True)


@signature(types.int(), types.ptr(rffi.CCHARP.TO), types.int(),
    returns=types.none())
def writeall_not_sandboxed(fd, buf, length):
    fd = rffi.cast(rffi.INT, fd)
    while length > 0:
        size = rffi.cast(rffi.SIZE_T, length)
        count = rffi.cast(lltype.Signed, ll_write_not_sandboxed(fd, buf, size))
        if count <= 0:
            raise IOError
        length -= count
        buf = lltype.direct_ptradd(lltype.direct_arrayitems(buf), count)
        buf = rffi.cast(rffi.CCHARP, buf)


class FdLoader(rmarshal.Loader):
    def __init__(self, fd):

示例#6

文件： rsandbox.py 项目： abhinavthomas/pypy

# a version of os.read() and os.write() that are not mangled
# by the sandboxing mechanism
ll_read_not_sandboxed = rposix.external('read',
                                        [rffi.INT, rffi.CCHARP, rffi.SIZE_T],
                                        rffi.SIZE_T,
                                        sandboxsafe=True)

ll_write_not_sandboxed = rposix.external('write',
                                         [rffi.INT, rffi.CCHARP, rffi.SIZE_T],
                                         rffi.SIZE_T,
                                         sandboxsafe=True)


@signature(types.int(), types.ptr(rffi.CCHARP.TO), types.int(),
    returns=types.none())
def writeall_not_sandboxed(fd, buf, length):
    while length > 0:
        size = rffi.cast(rffi.SIZE_T, length)
        count = rffi.cast(lltype.Signed, ll_write_not_sandboxed(fd, buf, size))
        if count <= 0:
            raise IOError
        length -= count
        buf = lltype.direct_ptradd(lltype.direct_arrayitems(buf), count)
        buf = rffi.cast(rffi.CCHARP, buf)


class FdLoader(rmarshal.Loader):
    def __init__(self, fd):
        rmarshal.Loader.__init__(self, "")