CSignal类参考

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详细描述

Class Signal implements signal handling to e.g. allow ctrl+c to cancel a long running process.

This is done in two ways:

1. A signal handler is attached to trap the SIGINT and SIGURG signal. Pressing ctrl+c or sending the SIGINT (kill ...) signal to the shogun process will make shogun print a message asking to immediately exit the running method and to fall back to the command line.
2. When an URG signal is received or ctrl+c P is pressed shogun will prematurely stop a method and continue execution. For example when an SVM solver takes a long time without progressing much, one might still be interested in the result and should thus send SIGURG or interactively prematurely stop the method

在文件Signal.h第47行定义。

继承图，类CSignal

所有成员的列表。

公有成员
	CSignal ()
virtual	~CSignal ()
virtual const char *	get_name () const
静态公有成员
static void	handler (int signal)
static bool	set_handler ()
static bool	unset_handler ()
static void	clear ()
static void	clear_cancel ()
static void	set_cancel (bool immediately=false)
static bool	cancel_computations ()
静态保护属性
static int	signals [NUMTRAPPEDSIGS] = {SIGINT, SIGURG}
static struct sigaction	oldsigaction [NUMTRAPPEDSIGS]
static bool	active = false
static bool	cancel_computation = false
static bool	cancel_immediately = false

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构造及析构函数文档

CSignal

(

)

default constructor

在文件Signal.cpp第30行定义。

~CSignal

(

)

[virtual]

在文件Signal.cpp第35行定义。

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成员函数文档

static bool cancel_computations

(

)

[static]

cancel computations

返回:

if computations should be cancelled

在文件Signal.h第85行定义。

void clear

(

)

[static]

clear signals

在文件Signal.cpp第142行定义。

void clear_cancel

(

)

[static]

clear cancel flag signals

在文件Signal.cpp第128行定义。

virtual const char* get_name

(

void

)

const [virtual]

返回:

object name

实现了CSGObject。

在文件Signal.h第98行定义。

void handler

(

int

signal

)

[static]

handler

参数:

signal

signal number

在文件Signal.cpp第41行定义。

void set_cancel

(

bool

immediately = false

)

[static]

set cancel flag signals

在文件Signal.cpp第134行定义。

bool set_handler

(

)

[static]

set handler

返回:

if setting was successful

在文件Signal.cpp第66行定义。

bool unset_handler

(

)

[static]

unset handler

返回:

if unsetting was successful

在文件Signal.cpp第104行定义。

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成员数据文档

bool active = false [static, read, protected]

active signal

在文件Signal.h第108行定义。

bool cancel_computation = false [static, protected]

if computation should be cancelled

在文件Signal.h第111行定义。

bool cancel_immediately = false [static, protected]

if shogun should return ASAP

在文件Signal.h第114行定义。

struct sigaction oldsigaction[NUMTRAPPEDSIGS] [static, protected]

signal actions

在文件Signal.h第105行定义。

int signals = {SIGINT, SIGURG} [static, protected]

signals; handling external lib

在文件Signal.h第102行定义。

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该类的文档由以下文件生成：

• Signal.h
• Signal.cpp