Author: sebor
Date: Mon Feb 6 14:04:06 2006
New Revision: 375395
URL: http://svn.apache.org/viewcvs?rev=375395&view=rev
Log:
2006-02-06 Martin Sebor <[EMAIL PROTECTED]>
STDCXX-3
* alarm.h: New. Declaration of the rw_alarm() helper.
* alarm.cpp: New. Definition of the same.
Added:
incubator/stdcxx/trunk/tests/include/alarm.h (with props)
incubator/stdcxx/trunk/tests/src/alarm.cpp (with props)
Added: incubator/stdcxx/trunk/tests/include/alarm.h
URL:
http://svn.apache.org/viewcvs/incubator/stdcxx/trunk/tests/include/alarm.h?rev=375395&view=auto
==============================================================================
--- incubator/stdcxx/trunk/tests/include/alarm.h (added)
+++ incubator/stdcxx/trunk/tests/include/alarm.h Mon Feb 6 14:04:06 2006
@@ -0,0 +1,44 @@
+/************************************************************************
+ *
+ * alarm.h - declaration of rw_alarm() and other helpers
+ *
+ * $Id$
+ *
+ ***************************************************************************
+ *
+ * Copyright (c) 1994-2005 Quovadx, Inc., acting through its Rogue Wave
+ * Software division. Licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0. Unless required by
+ * applicable law or agreed to in writing, software distributed under
+ * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+ * CONDITIONS OF ANY KIND, either express or implied. See the License
+ * for the specific language governing permissions and limitations under
+ * the License.
+ *
+ **************************************************************************/
+
+#ifndef RW_ALARM_H_INCLUDED
+#define RW_ALARM_H_INCLUDED
+
+
+#include <testdefs.h>
+
+
+extern "C" {
+
+typedef void rw_signal_handler_t (int);
+
+extern _TEST_EXPORT rw_signal_handler_t* const rw_sig_dfl;
+extern _TEST_EXPORT rw_signal_handler_t* const rw_sig_ign;
+extern _TEST_EXPORT rw_signal_handler_t* const rw_sig_hold;
+extern _TEST_EXPORT rw_signal_handler_t* const rw_sig_restore;
+
+}
+
+_TEST_EXPORT unsigned
+rw_alarm (unsigned int, rw_signal_handler_t* = 0);
+
+
+#endif // RW_ALARM_H_INCLUDED
Propchange: incubator/stdcxx/trunk/tests/include/alarm.h
------------------------------------------------------------------------------
svn:eol-style = native
Propchange: incubator/stdcxx/trunk/tests/include/alarm.h
------------------------------------------------------------------------------
svn:keywords = Id
Added: incubator/stdcxx/trunk/tests/src/alarm.cpp
URL:
http://svn.apache.org/viewcvs/incubator/stdcxx/trunk/tests/src/alarm.cpp?rev=375395&view=auto
==============================================================================
--- incubator/stdcxx/trunk/tests/src/alarm.cpp (added)
+++ incubator/stdcxx/trunk/tests/src/alarm.cpp Mon Feb 6 14:04:06 2006
@@ -0,0 +1,221 @@
+/************************************************************************
+ *
+ * alarm.cpp - definitions of testsuite helpers
+ *
+ * $Id$
+ *
+ ************************************************************************
+ *
+ * Copyright (c) 1994-2005 Quovadx, Inc., acting through its Rogue Wave
+ * Software division. Licensed under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at
+ * http://www.apache.org/licenses/LICENSE-2.0. Unless required by
+ * applicable law or agreed to in writing, software distributed under
+ * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+ * CONDITIONS OF ANY KIND, either express or implied. See the License
+ * for the specific language governing permissions and limitations under
+ * the License.
+ *
+ **************************************************************************/
+
+// expand _TEST_EXPORT macros
+#define _RWSTD_TEST_SRC
+
+// including <time.h> first works around a SunPro/SunOS bug (PR #26255)
+#include <time.h> // for time_t
+
+#include <assert.h> // for assert()
+#include <stdio.h> // for sprintf()
+
+#include <alarm.h>
+#include <rw_printf.h> // for rw_fprintf()
+
+
+// avoid re-declaring the constants below extern exported to prevent
+// MSVC error: object must have external linkage in order to be
+// exported/imported
+
+/* extern _TEST_EXPORT */ rw_signal_handler_t* const
+rw_sig_dfl = (rw_signal_handler_t*)-1;
+
+/* extern _TEST_EXPORT */ rw_signal_handler_t* const
+rw_sig_ign = (rw_signal_handler_t*)-2;
+
+/* extern _TEST_EXPORT */ rw_signal_handler_t* const
+rw_sig_hold = (rw_signal_handler_t*)-3;
+
+/* extern _TEST_EXPORT */ rw_signal_handler_t* const
+rw_sig_restore = (rw_signal_handler_t*)-4;
+
+
+// may point to a user-defined handler for the alarm
+static rw_signal_handler_t*
+_rw_alarm_handler;
+
+
+#if defined (_WIN32) || defined (_WIN64)
+
+#include <windows.h>
+
+// CygWin doesn't seem to define alarm()...
+
+// thread procedure
+static DWORD WINAPI
+_rw_alarm_proc (LPVOID arg /* seconds */)
+{
+ Sleep (1000U * (ULONG)arg);
+
+ rw_fprintf (rw_stderr, "%s:%d alarm expired\n", __FILE__, __LINE__);
+
+ if (_rw_alarm_handler)
+ _rw_alarm_handler (0);
+ else
+ abort (); // no SIGALRM on Win32
+
+ return 0;
+}
+
+
+// rough equivalent of POSIX alarm
+_TEST_EXPORT
+unsigned int
+rw_alarm (unsigned int nsec, rw_signal_handler_t* handler /* = 0 */)
+{
+ static HANDLE thread = 0; // thread handle (one alarm per process)
+ static unsigned pending = 0; // previous alarm() argument
+ static time_t t0 = 0; // start of previous alarm()
+ time_t unslept = 0; // seconds until previous alarm expires
+
+ if (thread) {
+ // previous alarm is still pending, cancel it
+ unslept = pending - (time (0) - t0);
+ TerminateThread (thread, 0);
+ CloseHandle (thread);
+ thread = 0;
+ }
+
+ pending = nsec;
+
+ if (nsec) {
+ time (&t0); // keep track of when countdown started
+
+ if (handler) {
+ // take care not to overwrite any previously set handler
+ _rw_alarm_handler = handler;
+ }
+
+ DWORD tid; // dummy (not used, required on Win95)
+ thread = CreateThread (0, 0, _rw_alarm_proc, (LPVOID)nsec, 0, &tid);
+ // thread handle will leak unless alarm (0) is called
+ }
+
+ return unsigned (unslept);
+}
+
+
+#else // if !defined (_WIN{32,64}
+
+# include <signal.h> // for SIGALRM, signal()
+# include <unistd.h> // for alarm(), write()
+
+ // define macros in case they aren't #defined by
+ // the system headers e.g., when using pure libc headers
+# ifndef SIGALRM
+# define SIGALRM 14 /* e.g., Solaris */
+# endif
+
+# ifndef SIG_DFL
+# define SIG_IGN (rw_signal_handler_t*)0
+# endif // SIG_DFL
+
+# ifndef SIG_IGN
+# define SIG_IGN (rw_signal_handler_t*)1
+# endif // SIG_IGN
+
+# ifndef SIG_HOLD
+# define SIG_HOLD (rw_signal_handler_t*)2
+# endif // SIG_HOLD
+
+
+extern "C" {
+
+static void
+_rw_handle_sigalrm (int signo)
+{
+ assert (SIGALRM == signo);
+
+ char buffer [1024];
+
+ // fprintf() is not async-signal safe...
+ const int len =
+ sprintf (buffer, "%s:%d: alarm expired\n", __FILE__, __LINE__);
+
+ // ...use write() instead
+ write (STDERR_FILENO, buffer, size_t (len));
+
+ if (_rw_alarm_handler)
+ _rw_alarm_handler (signo);
+}
+
+} // extern "C"
+
+
+_TEST_EXPORT
+unsigned
+rw_alarm (unsigned int nsec, rw_signal_handler_t* handler /* = 0 */)
+{
+ static rw_signal_handler_t* saved_handler = 0;
+ static unsigned saved_nsec = 0;
+
+ if (rw_sig_hold == handler) {
+ // hold and save the current SIGALRM handler
+ // and just retrieve the current alarm
+ saved_handler = signal (SIGALRM, (rw_signal_handler_t*)SIG_HOLD);
+ saved_nsec = alarm (0);
+
+ alarm (saved_nsec);
+
+ return saved_nsec;
+ }
+
+ if (rw_sig_restore == handler) {
+ // restore the previously saved SIGALRM handler
+ // and set a new alarm to go off approximately
+ // after (saved_nsec - nsec) seconds
+
+ if (saved_handler) {
+ signal (SIGALRM, saved_handler);
+
+ if (nsec < saved_nsec)
+ nsec = saved_nsec - nsec;
+ else
+ nsec = 1;
+
+ alarm (nsec);
+
+ // return the new timeout
+ return nsec;
+ }
+
+ // return 0 to indicate that no alarm was set
+ return 0;
+ }
+
+ if (rw_sig_dfl == handler) {
+ signal (SIGALRM, (rw_signal_handler_t*)SIG_DFL);
+ }
+ else if (rw_sig_ign == handler) {
+ signal (SIGALRM, (rw_signal_handler_t*)SIG_IGN);
+ }
+ else if (handler) {
+ // take care not to overwrite any previously set handler
+ _rw_alarm_handler = handler;
+ signal (SIGALRM, _rw_handle_sigalrm);
+ }
+
+ return alarm (nsec);
+}
+
+
+#endif // _WIN{32,64}
Propchange: incubator/stdcxx/trunk/tests/src/alarm.cpp
------------------------------------------------------------------------------
svn:eol-style = native
Propchange: incubator/stdcxx/trunk/tests/src/alarm.cpp
------------------------------------------------------------------------------
svn:keywords = Id
