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[Bug #2110] bug in threading implementation using guile-1.6.1
From: |
nobody |
Subject: |
[Bug #2110] bug in threading implementation using guile-1.6.1 |
Date: |
Thu, 02 Jan 2003 08:12:36 -0500 |
=================== BUG #2110: FULL BUG SNAPSHOT ===================
http://savannah.gnu.org/bugs/?func=detailbug&bug_id=2110&group_id=39
Submitted by: stan_pinte Project: Guile
Submitted on: 2003-Jan-02 13:12
Category: None Severity: 5 - Major
Bug Group: None Resolution: None
Assigned to: None Status: Open
Summary: bug in threading implementation using guile-1.6.1
Original Submission: hello,
I am using multiple threads within a guile-gtk application.
a call to (gtk-threads-ensure-handler) ensures that a first thread gets
started, and
allows the rest of my program to execute. At the end of that program, I call
(gtk-main), to
wait in the Gtk event thread.
If I run my program without starting a second thread, it is ok, but as soon as
I invoke
(gtk-threads-ensure-handler), my CPU is used at 100%
NOTES:
1: I configured guile-1.6.1 using the "--with-threads" flag.
2: if I strace my process, I see this:
ioctl(7, FIONREAD, [0]) = 0
select(32, [6 7], [], [], {0, 0}) = 1 (in [6], left {0, 0})
gettimeofday({1041338430, 454970}, NULL) = 0
gettimeofday({1041338430, 455055}, NULL) = 0
ioctl(7, FIONREAD, [0]) = 0
select(32, [6 7], [], [], {0, 0}) = 1 (in [6], left {0, 0})
gettimeofday({1041338430, 455767}, NULL) = 0
gettimeofday({1041338430, 455852}, NULL) = 0
ioctl(7, FIONREAD, [0]) = 0
select(32, [6 7], [], [], {0, 0}) = 1 (in [6], left {0, 0})
gettimeofday({1041338430, 456429}, NULL) = 0
gettimeofday({1041338430, 456511}, NULL) = 0
ioctl(7, FIONREAD, [0]) = 0
select(32, [6 7], [], [], {0, 0}) = 1 (in [6], left {0, 0})
gettimeofday({1041338430, 457084}, NULL) = 0
gettimeofday({1041338430, 457166}, NULL) = 0
ioctl(7, FIONREAD, [0]) = 0
select(32, [6 7], [], [], {0, 0}) = 1 (in [6], left {0, 0})
gettimeofday({1041338430, 459008}, NULL) = 0
gettimeofday({1041338430, 459097}, NULL) = 0
ioctl(7, FIONREAD, [0]) = 0
select(32, [6 7], [], [], {0, 0}) = 1 (in [6], left {0, 0})
gettimeofday({1041338430, 459688}, NULL) = 0
gettimeofday({1041338430, 459771}, NULL) = 0
ioctl(7, FIONREAD, [0]) = 0
select(32, [6 7], [], [], {0, 0}) = 1 (in [6], left {0, 0})
and so on....
--> I suspect a bug in the implementation of
coop_wait_for_runnable_thread () in libguile/isselect.c
if (QFIRST (coop_global_sleepq)->timeoutp)
gettimeofday (&now, NULL);
return coop_wait_for_runnable_thread_now (&now);
...
thanks a lot,
Stan
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http://savannah.gnu.org/bugs/?func=detailbug&bug_id=2110&group_id=39
- [Bug #2110] bug in threading implementation using guile-1.6.1,
nobody <=