# \[Bug:trunk\] Failure: test\_priority (TestThread) on mswin32

**URL:** <https://www.ruby-forum.com/t/bug-trunk-failure-test-priority-testthread-on-mswin32/154705>\
**Category:** Development\
**Created:** [December 3, 2008, 4:52am UTC](https://www.ruby-forum.com/t/bug-trunk-failure-test-priority-testthread-on-mswin32/154705 "2008-12-03T04:52:53Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![U.Nakamura](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/b5ac83/32.png) [@U.Nakamura](https://www.ruby-forum.com/u/U.Nakamura)\
**Post date:** [December 3, 2008, 4:52am UTC](https://www.ruby-forum.com/t/bug-trunk-failure-test-priority-testthread-on-mswin32/154705/1 "2008-12-03T04:52:53Z")

</div>

e$B$3$s$K$A$O!"$J$+$`$ie(B(e$B$&e(B)e$B$G$9!#e(B

e$BI=Bj$NDL$j$G$9$,!"e(Bprioritye$B$NDc$$%9%l%C%I$NA\*BrN($r2\<$2$k5!9=e(B  
e$B$Oe(Bpthreade$B$G$be(Bwin32e$B$G$bF1$8$J$N$K!"e(Bwin32e$B$@$H$^$H$b$K5!G=$7$F$$e(B  
e$B$J$$$h$&$K8+$($k$N$O$J$\<$G$7$g$&$+e(B?

e$B;d$N4D6-$G\<B83$7$?8B$j$@$H!"$@$$$?$$e(B30e$B!Ae(B40%e$B$/$i$$$N3NN($G$3$Ne(B  
e$B%F%9%H$O\<:GT$K$J$j$^$9!#e(B  
e$BHyL/$K8z$$$F$$$k$h$&$J!"8z$$$F$J$/$F%9%l%C%I@8@.=g=x$K0MB8$7e(B  
e$B$F$k$@$1$N$h$&$J!"HyL/$J46$8$G$9$,e(B…

e$B$=$l$G$O!#e(B

---

<div class="post-metadata">

**Author:** ![U.Nakamura](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/b5ac83/32.png) [@U.Nakamura](https://www.ruby-forum.com/u/U.Nakamura)\
**Post date:** [April 13, 2010, 5:44pm UTC](https://www.ruby-forum.com/t/bug-trunk-failure-test-priority-testthread-on-mswin32/154705/2 "2010-04-13T17:44:54Z")

</div>

e$B%A%1%C%He(B #812 e$B$,99?7$5$l$^$7$?!#e(B (by Yusuke E.)

e$BC4Ev\<Te(B Koichi Sasadae$B$+$ie(BYusuke E.e$B$KJQ99e(B  
Target version 1.9.2e$B$K%;%C%He(B  
ruby -v -e$B$K%;%C%He(B

e$B1sF#$G$9!#e(B

2008e$BG/e(B12e$B7ne(B3e$BF|e(B12:46 U.Nakamura [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid):

> e$BI=Bj$NDL$j$G$9$,!"e(Bprioritye$B$NDc$$%9%l%C%I$NA\*BrN($r2\<$2$k5!9=e(B  
> e$B$Oe(Bpthreade$B$G$be(Bwin32e$B$G$bF1$8$J$N$K!"e(Bwin32e$B$@$H$^$H$b$K5!G=$7$F$$e(B  
> e$B$J$$$h$&$K8+$($k$N$O$J$\<$G$7$g$&$+e(B?

e$B$3$N5!9=$O!"e(Bnative\_thread\_yield()  
e$B$r8F$s$@$H$-$K6KNOB\>$N%9%l%C%I$Ke(B  
e$B%3%s%F%-%9%H%9%$%C%A$7$F$/$l$J$$$HF/$-$^$;$s!#e(B  
thread\_win32.c e$B$G$Oe(B native\_thread\_yield() e$B$Oe(B Sleep(0)  
e$B$H$J$C$F$$$F!"e(B  
Sleep(0) e$B$Oe(B MSDN e$B$K$h$k$He(B

> e$BCfCG;~4V$H$7$Fe(B 0ms e$B$r;XDj$7$F$3$N4X?t$r8F$S=P$9$H!"8=:\_$N%9%l%C%I$Oe(B  
> e$B\<+$i$K3d$jEv$F$i$l$F$$$k%?%$%`%9%i%$%9$N;D$j$NItJ,$rJ|4~$7$^$9!#e(B

e$B$i$7$$$N$G!“$3$l$,K\Ev$J$iF0$-$=$&$J$b$N$G$9$,!”$I$&$J$s$G$7$g$&$M!#e(B

e$B$$$:$l$K$7$F$b!“$3$N%F%9%H$O%W%i%C%H%U%)!\<%`$H%?%$%\_%s%0$K6/$/0MB8e(B  
e$B$9$k$N$G$”$^$jE,@Z$G$J$+$C$?$+$b$7$l$^$;$s!#$9$G$K$J$+$@$5$s$K$h$C$Fe(B  
e$B%3%a%s%H%"%&%H$5$l$F$$$k$N$G!"2r7h$7$F$$$k$H;W$$$^$9!#e(B

Thread#priority, #priority= e$B$Ne(B rdoc  
e$B$O!“9bM%@hEY$N%9%l%C%I$,$$$k8B$je(B  
e$BDcM%@hEY$N%9%l%C%I$,A4$/\<B9T$5$l$J$$$+$N$h$&$KFI$a$k$N$G!”$3$l$r=$@5e(B  
e$B$7$D$D!“%W%i%C%H%U%)!\<%`$K$h$C$F$OL5;k$5$l$k$H$$$&$3$H$r=q$$$F!”$3$Ne(B  
e$B%A%1%C%H$O%/%m!\<%:$7$^$9!#e(B

diff --git a/thread.c b/thread.c  
index 10d6047…40a3483 100644  
— a/thread.c  
+++ b/thread.c  
@@ -2142,8 +2142,11 @@ rb\_thread\_keys(VALUE self)  
\*

- Returns the priority of _thr_. Default is inherited from the
- current thread which creating the new thread, or zero for the

- 
  - initial main thread; higher-priority threads will run before

- 
  - lower-priority threads.

- 
  - initial main thread; higher-priority thread will run more  
frequently

- 
  - than lower-priority threads (but lower-priority threads can also  
run).

- 
  - 

- 
  - This is just hint for Ruby thread scheduler. It may be ignored on  
some

- 
  - platform.
  - 
  - 

```
Thread.current.priority #=> 0

```

\*/  
@@ -2162,7 +2165,11 @@ rb\_thread\_priority(VALUE thread)
  - 

```
thr.priority= integer => thr

```

  - 
  - Sets the priority of _thr_ to _integer_. Higher-priority  
threads

- 
  - will run before lower-priority threads.

- 
  - will run more frequently than lower-priority threads (but  
lower-priority

- 
  - threads can also run).

- 
  - 

- 
  - This is just hint for Ruby thread scheduler. It may be ignored on  
some

- 
  - platform.
  - 
  - 

```
count1 = count2 = 0

```

  - 

```
a = Thread.new do

```

## – Yusuke E. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)

[http://redmine.ruby-lang.org/issues/show/812](http://redmine.ruby-lang.org/issues/show/812)

---

<div class="post-metadata">

**Author:** ![U.Nakamura](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/b5ac83/32.png) [@U.Nakamura](https://www.ruby-forum.com/u/U.Nakamura)\
**Post date:** [April 14, 2010, 3:09am UTC](https://www.ruby-forum.com/t/bug-trunk-failure-test-priority-testthread-on-mswin32/154705/3 "2010-04-14T03:09:54Z")

</div>

e$B$3$s$K$A$O!"$J$+$`$ie(B(e$B$&e(B)e$B$G$9!#e(B

In message “[ruby-dev:40977] [Bug #812] Failure: test\_priority  
(TestThread) on mswin32”  
on Apr.14,2010 00:44:30, [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> > e$B\<+$i$K3d$jEv$F$i$l$F$$$k%?%$%`%9%i%$%9$N;D$j$NItJ,$rJ|4~$7$^$9!#e(B
> 
> e$B$i$7$$$N$G!“$3$l$,K\Ev$J$iF0$-$=$&$J$b$N$G$9$,!”$I$&$J$s$G$7$g$&$M!#e(B

e$B$b$A$m$sK\Ev$J$N$GF0$-$=$&$J$N$G$9$,!“$J$s$G$@$m$&!”$H$$$&$Ne(B  
e$B$,L$$@$KFf$G$9!#e(B

> Thread#priority, #priority= e$B$Ne(B rdoc e$B$O!“9bM%@hEY$N%9%l%C%I$,$$$k8B$je(B  
> e$BDcM%@hEY$N%9%l%C%I$,A4$/\<B9T$5$l$J$$$+$N$h$&$KFI$a$k$N$G!”$3$l$r=$@5e(B  
> e$B$7$D$D!“%W%i%C%H%U%)!\<%`$K$h$C$F$OL5;k$5$l$k$H$$$&$3$H$r=q$$$F!”$3$Ne(B  
> e$B%A%1%C%H$O%/%m!\<%:$7$^$9!#e(B

e$B$=$l$G$$$$$H;W$$$^$9!#e(B

e$B$=$l$G$O!#e(B