本文整理汇总了C++中Poco::SystemException方法的典型用法代码示例。如果您正苦于以下问题：C++ Poco::SystemException方法的具体用法？C++ Poco::SystemException怎么用？C++ Poco::SystemException使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Poco的用法示例。
在下文中一共展示了Poco::SystemException方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: beDaemon
void ServerApplication::beDaemon()
{
#if !defined(POCO_NO_FORK_EXEC)
pid_t pid;
if ((pid = fork()) < 0)
throw SystemException("cannot fork daemon process");
else if (pid != 0)
exit(0);
setsid();
umask(027);
// attach stdin, stdout, stderr to /dev/null
// instead of just closing them. This avoids
// issues with third party/legacy code writing
// stuff to stdout/stderr.
FILE* fin = freopen("/dev/null", "r+", stdin);
if (!fin) throw Poco::OpenFileException("Cannot attach stdin to /dev/null");
FILE* fout = freopen("/dev/null", "r+", stdout);
if (!fout) throw Poco::OpenFileException("Cannot attach stdout to /dev/null");
FILE* ferr = freopen("/dev/null", "r+", stderr);
if (!ferr) throw Poco::OpenFileException("Cannot attach stderr to /dev/null");
#else
throw Poco::NotImplementedException("platform does not allow fork/exec");
#endif
}示例2: ServiceMain
void ServerApplication::ServiceMain(DWORD argc, LPTSTR* argv)
#endif
{
ServerApplication& app = static_cast<ServerApplication&>(Application::instance());
app.config().setBool("application.runAsService", true);
#if defined(POCO_WIN32_UTF8) && !defined(POCO_NO_WSTRING)
_serviceStatusHandle = RegisterServiceCtrlHandlerW(L"", ServiceControlHandler);
#else
_serviceStatusHandle = RegisterServiceCtrlHandlerA("", ServiceControlHandler);
#endif
if (!_serviceStatusHandle)
throw SystemException("cannot register service control handler");
_serviceStatus.dwServiceType = SERVICE_WIN32;
_serviceStatus.dwCurrentState = SERVICE_START_PENDING;
_serviceStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP | SERVICE_ACCEPT_SHUTDOWN;
_serviceStatus.dwWin32ExitCode = 0;
_serviceStatus.dwServiceSpecificExitCode = 0;
_serviceStatus.dwCheckPoint = 0;
_serviceStatus.dwWaitHint = 0;
SetServiceStatus(_serviceStatusHandle, &_serviceStatus);
try
{
#if defined(POCO_WIN32_UTF8) && !defined(POCO_NO_WSTRING)
std::vector<std::string> args;
for (DWORD i = 0; i < argc; ++i)
{
std::string arg;
Poco::UnicodeConverter::toUTF8(argv[i], arg);
args.push_back(arg);
}
app.init(args);
#else
app.init(argc, argv);
#endif
_serviceStatus.dwCurrentState = SERVICE_RUNNING;
SetServiceStatus(_serviceStatusHandle, &_serviceStatus);
int rc = app.run();
_serviceStatus.dwWin32ExitCode = rc ? ERROR_SERVICE_SPECIFIC_ERROR : 0;
_serviceStatus.dwServiceSpecificExitCode = rc;
}
catch (Exception& exc)
{
app.logger().log(exc);
_serviceStatus.dwWin32ExitCode = ERROR_SERVICE_SPECIFIC_ERROR;
_serviceStatus.dwServiceSpecificExitCode = EXIT_CONFIG;
}
catch (...)
{
app.logger().error("fatal error - aborting");
_serviceStatus.dwWin32ExitCode = ERROR_SERVICE_SPECIFIC_ERROR;
_serviceStatus.dwServiceSpecificExitCode = EXIT_SOFTWARE;
}
_serviceStatus.dwCurrentState = SERVICE_STOPPED;
SetServiceStatus(_serviceStatusHandle, &_serviceStatus);
}示例3: beDaemon
void ServerApplication::beDaemon()
{
pid_t pid;
if ((pid = fork()) < 0)
throw SystemException("cannot fork daemon process");
else if (pid != 0)
exit(0);
setsid();
umask(0);
// attach stdin, stdout, stderr to /dev/null
// instead of just closing them. This avoids
// issues with third party/legacy code writing
// stuff to stdout/stderr.
FILE* fin = freopen("/dev/null", "r+", stdin);
if (!fin) throw Poco::OpenFileException("Cannot attach stdin to /dev/null");
FILE* fout = freopen("/dev/null", "r+", stdout);
if (!fout) throw Poco::OpenFileException("Cannot attach stdout to /dev/null");
FILE* ferr = freopen("/dev/null", "r+", stderr);
if (!ferr) throw Poco::OpenFileException("Cannot attach stderr to /dev/null");
}