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-rw-r--r--include/my_alarm.h69
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diff --git a/include/my_alarm.h b/include/my_alarm.h
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+/*
+ Copyright (c) 2000, 2010, Oracle and/or its affiliates.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; version 2 of the License.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
+
+/*
+ File to include when we want to use alarm or a loop_counter to display
+ some information when a program is running
+*/
+#ifndef _my_alarm_h
+#define _my_alarm_h
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern int volatile my_have_got_alarm;
+extern ulong my_time_to_wait_for_lock;
+
+#if defined(HAVE_ALARM) && !defined(NO_ALARM_LOOP)
+#include <signal.h>
+#ifdef HAVE_SIGHANDLER_T
+#define sig_return sighandler_t
+#elif defined(SOLARIS) || defined(__sun) || defined(__APPLE__) || \
+ defined(_AIX) || \
+ defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || \
+ defined(__DragonFly__)
+typedef void (*sig_return)(int); /* Returns type from signal */
+#else
+typedef void (*sig_return)(void); /* Returns type from signal */
+#endif
+#define ALARM_VARIABLES uint alarm_old=0; \
+ sig_return alarm_signal=0
+#define ALARM_INIT my_have_got_alarm=0 ; \
+ alarm_old=(uint) alarm(MY_HOW_OFTEN_TO_ALARM); \
+ alarm_signal=signal(SIGALRM,my_set_alarm_variable);
+#define ALARM_END (void) signal(SIGALRM,alarm_signal); \
+ (void) alarm(alarm_old);
+#define ALARM_TEST my_have_got_alarm
+#ifdef SIGNAL_HANDLER_RESET_ON_DELIVERY
+#define ALARM_REINIT (void) alarm(MY_HOW_OFTEN_TO_ALARM); \
+ (void) signal(SIGALRM,my_set_alarm_variable);\
+ my_have_got_alarm=0;
+#else
+#define ALARM_REINIT (void) alarm((uint) MY_HOW_OFTEN_TO_ALARM); \
+ my_have_got_alarm=0;
+#endif /* SIGNAL_HANDLER_RESET_ON_DELIVERY */
+#else
+#define ALARM_VARIABLES long alarm_pos=0,alarm_end_pos=MY_HOW_OFTEN_TO_WRITE-1
+#define ALARM_INIT
+#define ALARM_END
+#define ALARM_TEST (alarm_pos++ >= alarm_end_pos)
+#define ALARM_REINIT (alarm_end_pos+=MY_HOW_OFTEN_TO_WRITE)
+#endif /* HAVE_ALARM */
+
+#ifdef __cplusplus
+}
+#endif
+#endif