void signalHandler(int signum)
{
DEBUG_MSG(fmt::format("SignalHandlers: receive sigNum {}.\n", SIGNAL_NAMES[signum]));
g_signalHandlers.onSignalled(signum);
};
namespace KBEngine {
KBE_SINGLETON_INIT(SignalHandlers);
const int SIGMIN = 1;
const int SIGMAX = SIGSYS;
const char * SIGNAL_NAMES[] =
{
NULL,
"SIGHUP",
"SIGINT",
"SIGQUIT",
"SIGILL",
"SIGTRAP",
"SIGABRT",
"SIGBUS",
"SIGFPE",
"SIGKILL",
"SIGUSR1",
"SIGSEGV",
"SIGUSR2",
"SIGPIPE",
"SIGALRM",
"SIGTERM",
"SIGSTKFLT",
"SIGCHLD",
"SIGCONT",
"SIGSTOP",
"SIGTSTP",
"SIGTTIN",
"SIGTTOU",
"SIGURG",
"SIGXCPU",
"SIGXFSZ",
"SIGVTALRM",
"SIGPROF",
"SIGWINCH",
"SIGIO",
"SIGPWR",
"SIGSYS"
};
SignalHandlers g_signalHandlers;
void signalHandler(int signum)
{
DEBUG_MSG(fmt::format("SignalHandlers: receive sigNum {}.\n", SIGNAL_NAMES[signum]));
g_signalHandlers.onSignalled(signum);
};
//-------------------------------------------------------------------------------------
SignalHandlers::SignalHandlers():
singnalHandlerMap_(),
signalledVec_(),
papp_(NULL)
{
}
//-------------------------------------------------------------------------------------
SignalHandlers::~SignalHandlers()
{
}
//-------------------------------------------------------------------------------------
void SignalHandlers::attachApp(ServerApp* app)
{
papp_ = app;
app->dispatcher().addTask(this);
}
//-------------------------------------------------------------------------------------
SignalHandler* SignalHandlers::addSignal(int sigNum,
SignalHandler* pSignalHandler, int flags)
{
SignalHandlerMap::iterator iter = singnalHandlerMap_.find(sigNum);
KBE_ASSERT(iter == singnalHandlerMap_.end());
singnalHandlerMap_[sigNum] = pSignalHandler;
#if KBE_PLATFORM != PLATFORM_WIN32
struct sigaction action;
action.sa_handler = &signalHandler;
sigfillset( &(action.sa_mask) );
if (flags & SA_SIGINFO)
{
ERROR_MSG( "ServerApp::installSingnal: "
"SA_SIGINFO is not supported, ignoring\n" );
flags &= ~SA_SIGINFO;
}
action.sa_flags = flags;
::sigaction( sigNum, &action, NULL );
#endif
return pSignalHandler;
}
//-------------------------------------------------------------------------------------
SignalHandler* SignalHandlers::delSignal(int sigNum)
{
SignalHandlerMap::iterator iter = singnalHandlerMap_.find(sigNum);
KBE_ASSERT(iter != singnalHandlerMap_.end());
SignalHandler* pSignalHandler = iter->second;
singnalHandlerMap_.erase(iter);
return pSignalHandler;
}
//-------------------------------------------------------------------------------------
void SignalHandlers::clear()
{
singnalHandlerMap_.clear();
}
//-------------------------------------------------------------------------------------
void SignalHandlers::onSignalled(int sigNum)
{
signalledVec_.push_back(sigNum);
}
//-------------------------------------------------------------------------------------
bool SignalHandlers::process()
{
if(signalledVec_.size() > 0)
{
std::vector<int>::iterator iter = signalledVec_.begin();
for(; iter != signalledVec_.end(); ++iter)
{
int sigNum = (*iter);
SignalHandlerMap::iterator iter1 = singnalHandlerMap_.find(sigNum);
if(iter1 == singnalHandlerMap_.end())
{
DEBUG_MSG(fmt::format("SignalHandlers::process: sigNum {} unhandled, singnalHandlerMap({}).\n",
SIGNAL_NAMES[sigNum], singnalHandlerMap_.size()));
continue;
}
DEBUG_MSG(fmt::format("SignalHandlers::process: sigNum {} handle.\n", SIGNAL_NAMES[sigNum]));
iter1->second->onSignalled(sigNum);
}
signalledVec_.clear();
}
return true;
}
//-------------------------------------------------------------------------------------
}