Detailed Description
Class Signal implements signal handling to e.g. allow ctrl+c to cancel a long running process.
This is done in two ways:
- 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.
- 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
Definition at line 47 of file Signal.h.
List of all members.
Constructor & Destructor Documentation
default constructor
Definition at line 30 of file Signal.cpp.
Member Function Documentation
static bool cancel_computations |
( |
|
) |
[static] |
cancel computations
- Returns:
- if computations should be cancelled
Definition at line 85 of file Signal.h.
void clear_cancel |
( |
|
) |
[static] |
clear cancel flag signals
Definition at line 128 of file Signal.cpp.
virtual const char* get_name |
( |
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) |
const [virtual] |
void handler |
( |
int |
signal |
) |
[static] |
handler
- Parameters:
-
Definition at line 41 of file Signal.cpp.
void set_cancel |
( |
bool |
immediately = false |
) |
[static] |
set cancel flag signals
Definition at line 134 of file Signal.cpp.
bool set_handler |
( |
|
) |
[static] |
set handler
- Returns:
- if setting was successful
Definition at line 66 of file Signal.cpp.
bool unset_handler |
( |
|
) |
[static] |
unset handler
- Returns:
- if unsetting was successful
Definition at line 104 of file Signal.cpp.
Member Data Documentation
bool active = false [static, read, protected] |
if computation should be cancelled
Definition at line 111 of file Signal.h.
if shogun should return ASAP
Definition at line 114 of file Signal.h.
struct sigaction oldsigaction[NUMTRAPPEDSIGS] [static, protected] |
signal actions
Definition at line 105 of file Signal.h.
int signals = {SIGINT, SIGURG} [static, protected] |
signals; handling external lib
Definition at line 102 of file Signal.h.
The documentation for this class was generated from the following files: