def register(self, target, typeinfer, func_id, args):
# guard compiling the same function with the same signature
if self.match(func_id.func, args):
msg = "compiler re-entrant to the same function signature"
raise errors.NumbaRuntimeError(msg)
self._lock.acquire()
self._stack.append(CallFrame(target, typeinfer, func_id, args))
try:
yield
finally:
self._stack.pop()
self._lock.release()
def _confirm_gdb(need_ptrace_attach=True):
"""
Set need_ptrace_attach to True/False to indicate whether the ptrace attach
permission is needed for this gdb use case. Mode 0 (classic) or 1
(restricted ptrace) is required if need_ptrace_attach is True. See:
https://www.kernel.org/doc/Documentation/admin-guide/LSM/Yama.rst
for details on the modes.
"""
if not _unix_like:
msg = 'gdb support is only available on unix-like systems'
raise errors.NumbaRuntimeError(msg)
gdbloc = config.GDB_BINARY
if not (os.path.exists(gdbloc) and os.path.isfile(gdbloc)):
msg = (
'Is gdb present? Location specified (%s) does not exist. The gdb'
' binary location can be set using Numba configuration, see: '
'https://numba.readthedocs.io/en/stable/reference/envvars.html' # noqa: E501
)
raise RuntimeError(msg % config.GDB_BINARY)
# Is Yama being used as a kernel security module and if so is ptrace_scope
# limited? In this case ptracing non-child processes requires special
# permission so raise an exception.
ptrace_scope_file = os.path.join(os.sep, 'proc', 'sys', 'kernel', 'yama',
'ptrace_scope')
has_ptrace_scope = os.path.exists(ptrace_scope_file)
if has_ptrace_scope:
with open(ptrace_scope_file, 'rt') as f:
value = f.readline().strip()
if need_ptrace_attach and value not in ("0", "1"):
msg = (
"gdb can launch but cannot attach to the executing program"
" because ptrace permissions have been restricted at the "
"system level by the Linux security module 'Yama'.\n\n"
"Documentation for this module and the security "
"implications of making changes to its behaviour can be "
"found in the Linux Kernel documentation "
"https://www.kernel.org/doc/Documentation/admin-guide/LSM/Yama.rst" # noqa: E501
"\n\nDocumentation on how to adjust the behaviour of Yama "
"on Ubuntu Linux with regards to 'ptrace_scope' can be "
"found here "
"https://wiki.ubuntu.com/Security/Features#ptrace.")
raise RuntimeError(msg)
def _require_nrt(self):
if not self._enabled:
raise errors.NumbaRuntimeError("NRT required but not enabled")