ACE
6.4.2
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This is an alternative signal handling dispatcher for ACE. It allows a list of signal handlers to be registered for each signal. It also makes SA_RESTART the default mode. More...
#include <Sig_Handler.h>
Public Member Functions | |
ACE_Sig_Handlers (void) | |
Default constructor. More... | |
virtual int | register_handler (int signum, ACE_Event_Handler *new_sh, ACE_Sig_Action *new_disp=0, ACE_Event_Handler **old_sh=0, ACE_Sig_Action *old_disp=0) |
virtual int | remove_handler (int signum, ACE_Sig_Action *new_disp=0, ACE_Sig_Action *old_disp=0, int sigkey=-1) |
virtual ACE_Event_Handler * | handler (int signum) |
virtual ACE_Event_Handler * | handler (int signum, ACE_Event_Handler *) |
void | dump (void) const |
Dump the state of an object. More... | |
Public Member Functions inherited from ACE_Sig_Handler | |
ACE_Sig_Handler (void) | |
Default constructor. More... | |
virtual | ~ACE_Sig_Handler (void) |
Destructor. More... | |
void | dump (void) const |
Dump the state of an object. More... | |
Static Public Member Functions | |
static void | dispatch (int signum, siginfo_t *, ucontext_t *) |
Static Public Member Functions inherited from ACE_Sig_Handler | |
static int | sig_pending (void) |
True if there is a pending signal. More... | |
static void | sig_pending (int) |
Reset the value of <sig_pending_> so that no signal is pending. More... | |
static void | dispatch (int, siginfo_t *, ucontext_t *) |
Public Attributes | |
ACE_ALLOC_HOOK_DECLARE | |
Declare the dynamic allocation hooks. More... | |
Public Attributes inherited from ACE_Sig_Handler | |
ACE_ALLOC_HOOK_DECLARE | |
Declare the dynamic allocation hooks. More... | |
Static Private Attributes | |
static int | sigkey_ = 0 |
static bool | third_party_sig_handler_ = false |
Additional Inherited Members | |
Static Protected Member Functions inherited from ACE_Sig_Handler | |
static ACE_Event_Handler * | handler_i (int signum, ACE_Event_Handler *) |
static int | register_handler_i (int signum, ACE_Event_Handler *new_sh, ACE_Sig_Action *new_disp=0, ACE_Event_Handler **old_sh=0, ACE_Sig_Action *old_disp=0) |
static int | remove_handler_i (int signum, ACE_Sig_Action *new_disp=0, ACE_Sig_Action *old_disp=0, int sigkey=-1) |
static int | in_range (int signum) |
Check whether the SIGNUM is within the legal range of signals. More... | |
Static Protected Attributes inherited from ACE_Sig_Handler | |
static sig_atomic_t | sig_pending_ = 0 |
Keeps track of whether a signal is pending. More... | |
This is an alternative signal handling dispatcher for ACE. It allows a list of signal handlers to be registered for each signal. It also makes SA_RESTART the default mode.
Using this class a program can register one or more ACE_Event_Handler with the ACE_Sig_Handler in order to handle a designated signum. When a signal occurs that corresponds to this signum, the <handle_signal> methods of all the registered ACE_Event_Handlers are invoked automatically.
ACE_Sig_Handlers::ACE_Sig_Handlers | ( | void | ) |
Default constructor.
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static |
Callback routine registered with sigaction(2) that dispatches the <handle_signal> method of all the pre-registered ACE_Event_Handlers for signum
void ACE_Sig_Handlers::dump | ( | void | ) | const |
Dump the state of an object.
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virtual |
Return the head of the list of <ACE_Sig_Handler>s associated with SIGNUM.
Reimplemented from ACE_Sig_Handler.
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Set a new ACE_Event_Handler that is associated with SIGNUM at the head of the list of signals. Return the existing handler that was at the head.
Reimplemented from ACE_Sig_Handler.
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virtual |
Add a new ACE_Event_Handler and a new sigaction associated with signum. Passes back the existing ACE_Event_Handler and its sigaction if pointers are non-zero. Returns -1 on failure and a <sigkey> that is >= 0 on success.
Reimplemented from ACE_Sig_Handler.
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virtual |
Remove an ACE_Event_Handler currently associated with signum. We remove the handler if (1) its sigkey> matches the sigkey passed as a parameter or (2) if we've been told to remove all the handlers, i.e., sigkey == -1. If a new disposition is given it is installed and the previous disposition is returned (if desired by the caller). Returns 0 on success and -1 if signum is invalid.
Reimplemented from ACE_Sig_Handler.
ACE_Sig_Handlers::ACE_ALLOC_HOOK_DECLARE |
Declare the dynamic allocation hooks.
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staticprivate |
Keeps track of the id that uniquely identifies each registered signal handler. This id can be used to cancel a timer via the <remove_handler> method.
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staticprivate |
If this is true then a 3rd party library has registered a handler...