A signal is a software interrupt; UNIX supports about 30 signals, each of which has a unique integer code. The signals are numbered sequentially, starting from the number one. A programmer can specify that the current process react to a particular signal in one of these ways.

In addition, os_this_process can be told to block certain signals. Blocked signals are queued and only delivered if they are later unblocked. Some signals are sent so commonly that they have a function named after them in os_process and os_this_process .

Interface

Constructor

os_signal( const os_signal& signal )

Constructs an object that is a copy of signal .

Constructor

os_signal( os_sig_t code )

Constructs an object with signal code code (default OS_UNDEFINED ).

bool operator<( const os_signal& signal ) const

Returns true if the code is less than signal .

os_signal& operator=( os_sig_t signal )

Assigns an object from signal .

os_signal& operator=( const os_signal& signal )

Assigns an object from signal .

bool operator==( const os_signal& signal ) const

Returns true if the code is the same as signal .

(os_sig_t)

operator os_sig_t() const

Returns the code.

code

void code( os_sig_t code )

Sets the code to code .

code

os_sig_t code() const

Returns the code.

defined

bool defined() const

Returns true if the code is a valid system signal.

print

void print( ostream& stream ) const

Prints code and description to stream .

Universal Streaming Service


  #include <ospace/uss/unix.h>

os_bstream& operator<<( os_bstream& stream , const os_signal& signal )

Writes signal to stream .

os_bstream& operator>>( os_bstream& stream , os_signal& signal )

Reads signal from stream .

signal

Library

Declaration

Interface

Non-Member Functions

Universal Streaming Service