STINNER Victor <[email protected]> added the comment:
About signalfd(): this patch doesn't provide any information or tool to decode
data written to the file descriptor. We should expose the signalfd_siginfo
structure or you cannot handle more than one signal (how do you know which
signal numbers were raised?). Example with ctypes:
class signalfd_siginfo(Structure):
_fields_ = (
('ssi_signo', c_uint32), # Signal number
('ssi_errno', c_int32), # Error number (unused)
('ssi_code', c_int32), # Signal code
('ssi_pid', c_uint32), # PID of sender
('ssi_uid', c_uint32), # Real UID of sender
('ssi_fd', c_int32), # File descriptor (SIGIO)
('ssi_tid', c_uint32), # Kernel timer ID (POSIX timers)
('ssi_band', c_uint32), # Band event (SIGIO)
('ssi_overrun', c_uint32), # POSIX timer overrun count
('ssi_trapno', c_uint32), # Trap number that caused signal
('ssi_status', c_int32), # Exit status or signal (SIGCHLD)
('ssi_int', c_int32), # Integer sent by sigqueue(2)
('ssi_ptr', c_uint64), # Pointer sent by sigqueue(2)
('ssi_utime', c_uint64), # User CPU time consumed (SIGCHLD)
('ssi_stime', c_uint64), # System CPU time consumed (SIGCHLD)
('ssi_addr', c_uint64), # Address that generated signal
# (for hardware-generated signals)
('_padding', c_char * 46), # Pad size to 128 bytes (allow for
# additional fields in the future)
)
----------
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Python tracker <[email protected]>
<http://bugs.python.org/issue8407>
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