[PATCH] stdlib: Fixing test-*atexit*-race tests on ia64

[PATCH] stdlib: Fixing test-*atexit*-race tests on ia64

[Adhemerval Zanella]

The tests requires a new thread stack size to a value (0x20000) lower than
architecture minimum (0x3000).  Set PTHREAD_STACK_MIN in this case.

Checked on ia64-linux-gnu.

	* stdlib/test-atexit-race-common.c (do_test): Check stack size
	against PTHREAD_STACK_MIN.
---
 ChangeLog                        | 5 +++++
 stdlib/test-atexit-race-common.c | 5 ++++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/stdlib/test-atexit-race-common.c b/stdlib/test-atexit-race-common.c
index 4d7f911..02d459c 100644
--- a/stdlib/test-atexit-race-common.c
+++ b/stdlib/test-atexit-race-common.c
@@ -34,9 +34,11 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <support/xthread.h>
+#include <sys/param.h>
 
 const size_t kNumThreads = 1024;
 const size_t kNumHandlers = 1024;
+const size_t kStacksize = 0x20000;
 
 static void *
 threadfunc (void *unused)
@@ -60,7 +62,8 @@ do_test (void)
   /* With default 8MiB Linux stack size, creating 1024 threads can cause
      VM exhausiton on 32-bit machines.  Reduce stack size of each thread to
      128KiB for a maximum required VM size of 128MiB.  */
-  xpthread_attr_setstacksize (&attr, 128 * 1024);
+  size_t ss = kStacksize < PTHREAD_STACK_MIN ? PTHREAD_STACK_MIN : kStacksize;
+  xpthread_attr_setstacksize (&attr, ss);
 
   for (i = 0; i < kNumThreads; ++i) {
     xpthread_create (&attr, threadfunc, NULL);
-- 
2.7.4

Re: [PATCH] stdlib: Fixing test-*atexit*-race tests on ia64

[Dmitry V. Levin]

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On Thu, Feb 01, 2018 at 10:41:05AM -0200, Adhemerval Zanella wrote:
> The tests requires a new thread stack size to a value (0x20000) lower than
> architecture minimum (0x3000).  Set PTHREAD_STACK_MIN in this case.

These tests require a new thread stack size set to a value (0x20000)
lower than the architecture minimum (0x30000).  Set the stack size
to PTHREAD_STACK_MIN in this case.

> Checked on ia64-linux-gnu.
> 
> 	* stdlib/test-atexit-race-common.c (do_test): Check stack size
> 	against PTHREAD_STACK_MIN.
> ---
>  ChangeLog                        | 5 +++++
>  stdlib/test-atexit-race-common.c | 5 ++++-
>  2 files changed, 9 insertions(+), 1 deletion(-)
> 
> diff --git a/stdlib/test-atexit-race-common.c b/stdlib/test-atexit-race-common.c
> index 4d7f911..02d459c 100644
> --- a/stdlib/test-atexit-race-common.c
> +++ b/stdlib/test-atexit-race-common.c
> @@ -34,9 +34,11 @@
>  #include <stdio.h>
>  #include <stdlib.h>
>  #include <support/xthread.h>
> +#include <sys/param.h>

#include <limits.h>

>  const size_t kNumThreads = 1024;
>  const size_t kNumHandlers = 1024;
> +const size_t kStacksize = 0x20000;

const size_t kStacksize =
	0x20000 < PTHREAD_STACK_MIN ? PTHREAD_STACK_MIN : 0x20000;

>  static void *
>  threadfunc (void *unused)
> @@ -60,7 +62,8 @@ do_test (void)
>    /* With default 8MiB Linux stack size, creating 1024 threads can cause
>       VM exhausiton on 32-bit machines.  Reduce stack size of each thread to
>       128KiB for a maximum required VM size of 128MiB.  */
> -  xpthread_attr_setstacksize (&attr, 128 * 1024);
> +  size_t ss = kStacksize < PTHREAD_STACK_MIN ? PTHREAD_STACK_MIN : kStacksize;
> +  xpthread_attr_setstacksize (&attr, ss);
>  
>    for (i = 0; i < kNumThreads; ++i) {
>      xpthread_create (&attr, threadfunc, NULL);

... and this hunk won't be needed at all.


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Re: [PATCH] stdlib: Fixing test-*atexit*-race tests on ia64

[Adhemerval Zanella]

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On 01/02/2018 11:04, Dmitry V. Levin wrote:
> On Thu, Feb 01, 2018 at 10:41:05AM -0200, Adhemerval Zanella wrote:
>> The tests requires a new thread stack size to a value (0x20000) lower than
>> architecture minimum (0x3000).  Set PTHREAD_STACK_MIN in this case.
> 
> These tests require a new thread stack size set to a value (0x20000)
> lower than the architecture minimum (0x30000).  Set the stack size
> to PTHREAD_STACK_MIN in this case.
> 
>> Checked on ia64-linux-gnu.
>>
>> 	* stdlib/test-atexit-race-common.c (do_test): Check stack size
>> 	against PTHREAD_STACK_MIN.
>> ---
>>  ChangeLog                        | 5 +++++
>>  stdlib/test-atexit-race-common.c | 5 ++++-
>>  2 files changed, 9 insertions(+), 1 deletion(-)
>>
>> diff --git a/stdlib/test-atexit-race-common.c b/stdlib/test-atexit-race-common.c
>> index 4d7f911..02d459c 100644
>> --- a/stdlib/test-atexit-race-common.c
>> +++ b/stdlib/test-atexit-race-common.c
>> @@ -34,9 +34,11 @@
>>  #include <stdio.h>
>>  #include <stdlib.h>
>>  #include <support/xthread.h>
>> +#include <sys/param.h>
> 
> #include <limits.h>
> 
>>  const size_t kNumThreads = 1024;
>>  const size_t kNumHandlers = 1024;
>> +const size_t kStacksize = 0x20000;
> 
> const size_t kStacksize =
> 	0x20000 < PTHREAD_STACK_MIN ? PTHREAD_STACK_MIN : 0x20000;

Alright, I just set the logic to be near the comment, I do not have a strong
preference here.

> 
>>  static void *
>>  threadfunc (void *unused)
>> @@ -60,7 +62,8 @@ do_test (void)
>>    /* With default 8MiB Linux stack size, creating 1024 threads can cause
>>       VM exhausiton on 32-bit machines.  Reduce stack size of each thread to
>>       128KiB for a maximum required VM size of 128MiB.  */
>> -  xpthread_attr_setstacksize (&attr, 128 * 1024);
>> +  size_t ss = kStacksize < PTHREAD_STACK_MIN ? PTHREAD_STACK_MIN : kStacksize;
>> +  xpthread_attr_setstacksize (&attr, ss);
>>  
>>    for (i = 0; i < kNumThreads; ++i) {
>>      xpthread_create (&attr, threadfunc, NULL);
> 
> ... and this hunk won't be needed at all.
> 
> 

I will commit with your suggestions.


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