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emacs
emacs
Commits
e12489f9
Commit
e12489f9
authored
Jan 25, 2000
by
Gerd Moellmann
Browse files
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parent
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lisp/ChangeLog
lisp/ChangeLog
+5
-0
lwlib/ChangeLog
lwlib/ChangeLog
+8
-0
src/ChangeLog
src/ChangeLog
+49
-0
src/atimer.c
src/atimer.c
+336
-0
src/atimer.h
src/atimer.h
+75
-0
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lisp/ChangeLog
View file @
e12489f9
2000-01-25 Gerd Moellmann <gerd@gnu.org>
* scroll-bar.el (scroll-bar-timer): Variable removed.
(scroll-bar-toolkit-scroll): Don't use a timer.
2000-01-25 Kenichi Handa <handa@etl.go.jp>
* language/thai-util.el (thai-composition-function): Delete
...
...
lwlib/ChangeLog
View file @
e12489f9
2000-01-25 Gerd Moellmann <gerd@gnu.org>
* lwlib-Xm.c (make_menu_in_widget): Don't add XmNpopdownCallback,
add XmNunmapCallback.
(xm_unmap_callback): New function.
(xm_pull_down_callback): Call pre-activate callback only if
parent is the menu bar.
2000-01-17 Gerd Moellmann <gerd@gnu.org>
* lwlib-Xm.c (xm_arm_callback): New function.
...
...
src/ChangeLog
View file @
e12489f9
No preview for this file type
src/atimer.c
0 → 100644
View file @
e12489f9
/* Asynchronous timers.
Copyright (C) 2000 Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs 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; either version 2, or (at your option)
any later version.
GNU Emacs 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 GNU Emacs; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <config.h>
#include <lisp.h>
#include <signal.h>
#include <syssignal.h>
#include <systime.h>
#include <blockinput.h>
#include <atimer.h>
#include <stdio.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
/* The ubiquitous min/max macros. */
#define max(X, Y) ((X) > (Y) ? (X) : (Y))
#define min(X, Y) ((X) < (Y) ? (X) : (Y))
/* Free-list of atimer structures. */
static
struct
atimer
*
free_atimers
;
/* List of active atimers, sorted by expiration time. The timer that
will become ripe next is always at the front of this list. */
static
struct
atimer
*
atimers
;
/* Non-zero means alarm_signal_handler has found ripe timers but
interrupt_input_blocked was non-zero. In this case, timer
functions are not called until the next UNBLOCK_INPUT because timer
functions are expected to call X, and X cannot be assumed to be
reentrant. */
int
pending_atimers
;
/* Block/unblock SIGALRM.. */
#define BLOCK_ATIMERS sigblock (sigmask (SIGALRM))
#define UNBLOCK_ATIMERS sigunblock (sigmask (SIGALRM))
/* Function prototypes. */
static
void
set_alarm
P_
((
void
));
static
void
schedule_atimer
P_
((
struct
atimer
*
));
/* Start a new atimer of type TYPE. TIME specifies when the timer is
ripe. FN is the function to call when the timer fires.
CLIENT_DATA is stored in the client_data member of the atimer
structure returned and so made available to FN when it is called.
If TYPE is ATIMER_ABSOLUTE, TIME is the absolute time at which the
timer fires.
If TYPE is ATIMER_RELATIVE, the timer is ripe TIME s/us in the
future.
In both cases, the timer is automatically freed after it has fired.
If TYPE is ATIMER_CONTINUOUS, the timer fires every TIME s/us.
Value is a pointer to the atimer started. It can be used in calls
to cancel_atimer; don't free it yourself. */
struct
atimer
*
start_atimer
(
type
,
time
,
fn
,
client_data
)
enum
atimer_type
type
;
EMACS_TIME
time
;
atimer_callback
fn
;
void
*
client_data
;
{
struct
atimer
*
t
;
/* Round TIME up to the next full second if we don't have
itimers. */
#ifndef HAVE_SETITIMER
if
(
EMACS_USECS
(
time
)
!=
0
)
{
EMACS_USECS
(
time
)
=
0
;
++
EMACS_SECS
(
time
);
}
#endif
/* not HAVE_SETITIMER */
/* Get an atimer structure from the free-list, or allocate
a new one. */
if
(
free_atimers
)
{
t
=
free_atimers
;
free_atimers
=
t
->
next
;
}
else
t
=
(
struct
atimer
*
)
xmalloc
(
sizeof
*
t
);
/* Fill the atimer structure. */
bzero
(
t
,
sizeof
*
t
);
t
->
type
=
type
;
t
->
fn
=
fn
;
t
->
client_data
=
client_data
;
BLOCK_ATIMERS
;
/* Compute the timer's expiration time. */
switch
(
type
)
{
case
ATIMER_ABSOLUTE
:
t
->
expiration
=
time
;
break
;
case
ATIMER_RELATIVE
:
EMACS_GET_TIME
(
t
->
expiration
);
EMACS_ADD_TIME
(
t
->
expiration
,
t
->
expiration
,
time
);
break
;
case
ATIMER_CONTINUOUS
:
EMACS_GET_TIME
(
t
->
expiration
);
EMACS_ADD_TIME
(
t
->
expiration
,
t
->
expiration
,
time
);
t
->
interval
=
time
;
break
;
}
/* Insert the timer in the list of active atimers. */
schedule_atimer
(
t
);
UNBLOCK_ATIMERS
;
/* Arrange for a SIGALRM at the time the next atimer is ripe. */
set_alarm
();
return
t
;
}
/* Cancel and free atimer TIMER. */
void
cancel_atimer
(
timer
)
struct
atimer
*
timer
;
{
struct
atimer
*
t
,
*
prev
;
BLOCK_ATIMERS
;
/* See if TIMER is active. */
for
(
t
=
atimers
,
prev
=
0
;
t
&&
t
!=
timer
;
t
=
t
->
next
)
;
/* If it is, take it off the list of active timers, put in on the
free-list. We don't bother to arrange for setting a different
alarm time, since a too early one doesn't hurt. */
if
(
t
)
{
if
(
prev
)
prev
->
next
=
t
->
next
;
else
atimers
=
t
->
next
;
t
->
next
=
free_atimers
;
free_atimers
=
t
;
}
UNBLOCK_ATIMERS
;
}
/* Arrange for a SIGALRM to arrive when the next timer is ripe. */
static
void
set_alarm
()
{
#if defined (USG) && !defined (POSIX_SIGNALS)
/* USG systems forget handlers when they are used;
must reestablish each time. */
signal
(
SIGALRM
,
alarm_signal_handler
);
#endif
/* USG */
if
(
atimers
)
{
EMACS_TIME
now
,
time
;
#ifdef HAVE_SETITIMER
struct
itimerval
it
;
#endif
/* Determine s/us till the next timer is ripe. */
EMACS_GET_TIME
(
now
);
EMACS_SUB_TIME
(
time
,
atimers
->
expiration
,
now
);
#ifdef HAVE_SETITIMER
/* Don't set the interval to 0; this disables the timer. */
if
(
EMACS_TIME_LE
(
atimers
->
expiration
,
now
))
{
EMACS_SET_SECS
(
time
,
0
);
EMACS_SET_USECS
(
time
,
1000
);
}
bzero
(
&
it
,
sizeof
it
);
it
.
it_value
=
time
;
setitimer
(
ITIMER_REAL
,
&
it
,
0
);
#else
/* not HAVE_SETITIMER */
alarm
(
max
(
EMACS_SECS
(
time
),
1
));
#endif
/* not HAVE_SETITIMER */
}
}
/* Insert timer T into the list of active atimers `atimers', keeping
the list sorted by expiration time. T must not be in this list
already. */
static
void
schedule_atimer
(
t
)
struct
atimer
*
t
;
{
struct
atimer
*
a
=
atimers
,
*
prev
=
NULL
;
/* Look for the first atimer that is ripe after T. */
while
(
a
&&
EMACS_TIME_GT
(
t
->
expiration
,
a
->
expiration
))
prev
=
a
,
a
=
a
->
next
;
/* Insert T in front of the atimer found, if any. */
if
(
prev
)
prev
->
next
=
t
;
else
atimers
=
t
;
t
->
next
=
a
;
}
/* Signal handler for SIGALRM. SIGNO is the signal number, i.e.
SIGALRM. */
SIGTYPE
alarm_signal_handler
(
signo
)
int
signo
;
{
EMACS_TIME
now
;
EMACS_GET_TIME
(
now
);
pending_atimers
=
0
;
while
(
atimers
&&
(
pending_atimers
=
interrupt_input_blocked
)
==
0
&&
EMACS_TIME_LE
(
atimers
->
expiration
,
now
))
{
struct
atimer
*
t
;
t
=
atimers
;
atimers
=
atimers
->
next
;
t
->
fn
(
t
);
if
(
t
->
type
==
ATIMER_CONTINUOUS
)
{
EMACS_ADD_TIME
(
t
->
expiration
,
now
,
t
->
interval
);
schedule_atimer
(
t
);
}
else
{
t
->
next
=
free_atimers
;
free_atimers
=
t
;
}
EMACS_GET_TIME
(
now
);
}
#if defined (USG) && !defined (POSIX_SIGNALS)
/* USG systems forget handlers when they are used;
must reestablish each time. */
signal
(
SIGALRM
,
alarm_signal_handler
);
#endif
/* USG */
set_alarm
();
}
/* Call alarm_signal_handler for pending timers. */
void
do_pending_atimers
()
{
if
(
pending_atimers
)
{
BLOCK_ATIMERS
;
alarm_signal_handler
(
SIGALRM
);
UNBLOCK_ATIMERS
;
}
}
/* Turn alarms on/off. This seems to be temporarily necessary on
some systems like HPUX (see process.c). */
void
turn_on_atimers
(
on
)
int
on
;
{
if
(
on
)
{
signal
(
SIGALRM
,
alarm_signal_handler
);
set_alarm
();
}
else
alarm
(
0
);
}
void
init_atimer
()
{
free_atimers
=
atimers
=
NULL
;
pending_atimers
=
0
;
signal
(
SIGALRM
,
alarm_signal_handler
);
}
src/atimer.h
0 → 100644
View file @
e12489f9
/* Asynchronous timers.
Copyright (C) 2000 Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs 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; either version 2, or (at your option)
any later version.
GNU Emacs 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 GNU Emacs; see the file COPYING. If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
/* Forward declaration. */
struct
atimer
;
/* Types of timers. */
enum
atimer_type
{
/* Timer is ripe at some absolute time. */
ATIMER_ABSOLUTE
,
/* Timer is ripe at now plus an offset. */
ATIMER_RELATIVE
,
/* Timer runs continously. */
ATIMER_CONTINUOUS
};
/* Type of timer callback functions. */
typedef
void
(
*
atimer_callback
)
P_
((
struct
atimer
*
timer
));
/* Structure describing an asynchronous timer. */
struct
atimer
{
/* The type of this timer. */
enum
atimer_type
type
;
/* Time when this timer is ripe. */
EMACS_TIME
expiration
;
/* Interval of this timer. */
EMACS_TIME
interval
;
/* Function to call when timer is ripe. Interupt input is
garanteed to not be blocked when this function is called. */
atimer_callback
fn
;
/* Additional user-specified data to pass to FN. */
void
*
client_data
;
/* Next in list of active or free atimers. */
struct
atimer
*
next
;
};
/* Function prototypes. */
struct
atimer
*
start_atimer
P_
((
enum
atimer_type
,
EMACS_TIME
,
atimer_callback
,
void
*
));
void
cancel_atimer
P_
((
struct
atimer
*
));
void
do_pending_atimers
P_
((
void
));
void
init_atimer
P_
((
void
));
void
turn_on_atimers
P_
((
int
));
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