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Glasgow Haskell Compiler
GHC
Commits
37d4af06
Commit
37d4af06
authored
Mar 23, 2000
by
simonmar
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[project @ 2000-03-23 12:02:38 by simonmar]
Don't wake up threads if the select() was interrupted by a signal.
parent
b14d8a68
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1
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8 additions
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4 deletions
+8
-4
ghc/rts/Select.c
ghc/rts/Select.c
+8
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ghc/rts/Select.c
View file @
37d4af06
/* -----------------------------------------------------------------------------
* $Id: Select.c,v 1.1
0 2000/03/20 09:42:50 andy
Exp $
* $Id: Select.c,v 1.1
1 2000/03/23 12:02:38 simonmar
Exp $
*
* (c) The GHC Team 1995-1999
*
...
...
@@ -52,6 +52,7 @@ awaitEvent(rtsBool wait)
int
numFound
;
nat
min
,
delta
;
int
maxfd
=
-
1
;
rtsBool
select_succeeded
=
rtsTrue
;
struct
timeval
tv
;
#ifndef linux_TARGET_OS
...
...
@@ -165,6 +166,8 @@ awaitEvent(rtsBool wait)
if
(
signals_pending
())
{
RELEASE_LOCK
(
&
sched_mutex
);
start_signal_handlers
();
/* Don't wake up any other threads that were waiting on I/O */
select_succeeded
=
rtsFalse
;
break
;
}
...
...
@@ -173,6 +176,7 @@ awaitEvent(rtsBool wait)
*/
if
(
run_queue_hd
!=
END_TSO_QUEUE
)
{
RELEASE_LOCK
(
&
sched_mutex
);
select_succeeded
=
rtsFalse
;
break
;
}
...
...
@@ -209,16 +213,15 @@ awaitEvent(rtsBool wait)
next
=
tso
->
link
;
switch
(
tso
->
why_blocked
)
{
case
BlockedOnRead
:
ready
=
FD_ISSET
(
tso
->
block_info
.
fd
,
&
rfd
);
ready
=
select_succeeded
&&
FD_ISSET
(
tso
->
block_info
.
fd
,
&
rfd
);
break
;
case
BlockedOnWrite
:
ready
=
FD_ISSET
(
tso
->
block_info
.
fd
,
&
wfd
);
ready
=
select_succeeded
&&
FD_ISSET
(
tso
->
block_info
.
fd
,
&
wfd
);
break
;
case
BlockedOnDelay
:
{
int
candidate
;
/* signed int is intentional */
#if defined(HAVE_SETITIMER)
if
(
tso
->
block_info
.
delay
>
delta
)
{
tso
->
block_info
.
delay
-=
delta
;
...
...
@@ -228,6 +231,7 @@ awaitEvent(rtsBool wait)
ready
=
1
;
}
#else
int
candidate
;
/* signed int is intentional */
candidate
=
tso
->
block_info
.
target
-
getourtimeofday
();
if
(
candidate
<
0
)
{
candidate
=
0
;
...
...
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