Re: [perl #25129] IO Buffer Test

2004-01-22 Thread Leopold Toetsch
Arvindh Rajesh Tamilmani [EMAIL PROTECTED] wrote:
   name=biotests.patch

Something is wrong with these tests: patching t/src/io.t and PASM code.
Even if that works, PASM tests shouldn't be in t/src but in t/pmc/io.t.

leo


RE: [perl #25129] IO Buffer Test

2004-01-22 Thread Tamilmani, Arvindh Rajesh (Cognizant)
Even if that works, PASM tests shouldn't be in t/src but in t/pmc/io.t.

Sorry, I didn't know that.
The attached patch is for t/pmc/io.t

leo

Thanks,
Arvindh


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RE: [perl #25129] IO Buffer Test

2004-01-21 Thread Tamilmani, Arvindh Rajesh (Cognizant)
This is a test for the buffer bug that
was discussed on p6i a few days ago.

It does not remove the test file it makes
because I do not know a good way to do this.

You may use teardown() defined in t/src/io.t

The attached patch contains stripped down versions of your program
that I used to simulate the buffer IO bugs (perl #24941).

Test cases for:
a) PIO_flush on buffer full
b) turn off buffering

Leo, even with old versions of the repository, I couldn't simulate the 'filling the 
disk on flush' bug.
My box is i386-linux with gcc.

/Stefan

Thanks,
Arvindh


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Re: [perl #25129] IO Buffer Test

2004-01-19 Thread Leopold Toetsch
Stefan Lidman [EMAIL PROTECTED] wrote:

 This is a test for the buffer bug that
 was discussed on p6i a few days ago.

Thanks, fine.

 output_is('CODE', OUTPUT, Buffer test);
 set S0, buffTest
 open P1, S0

  open P1, S0, 

I don't know, if it should even write the test file w/o that, but it
does (once).

Anyway, while the rest of the code seems to be totally ok, it PANICs
here with a memory shortage. I'll have a look at that first.

Thanks for the test,
leo


Re: [perl #25129] IO Buffer Test

2004-01-19 Thread Leopold Toetsch
Stefan Lidman [EMAIL PROTECTED] wrote:

 readline S1, P1

The implementation of readline looks rather bogus. It allocates a huge
(64K) string, sets that to zero, and the calls read, which calls
readline.

This is really suboptimal. It should probably call PIO_buf_readline or
such directly, which could return a newly created string of the needed
size.

WRT the PANIC:

interpreter-memory_allocated = 412528944,

I don't know yet, why. Printing statistics after the readline makes the
PANIC go away but still:

Successful
*** Parrot VM: Dumping GC info ***
Total memory allocated = 384226672
DOD runs = 547
Collect runs = 11

leo


Re: [perl #25129] IO Buffer Test

2004-01-19 Thread Leopold Toetsch
Stefan Lidman [EMAIL PROTECTED] wrote:

[ VM Panic ]
 SPLIT:
 substr S3, S1, 0, 1
 substr S1, 0, 1, 

The mem_allocate happens to be triggered by above string_replace, which
does unmake_COW. During that GC is blocked, so we are allocating
increasing blocks of memory until the PANIC.

leo


Re: [perl #25129] IO Buffer Test

2004-01-19 Thread Leopold Toetsch
Stefan Lidman [EMAIL PROTECTED] wrote:

[ and yet another f'up ]

I've now comitted a fix for unmakeCOW not to turn off GC. So the test
runs fine now with limited memory. *But*:

Total memory allocated = 532480
DOD runs = 9680
Collect runs = 9660
Collect memory = 1388032592
 ^^

Its horribly slow. /Me thinks that's the readline b0rkeness, I
summarized ealier.

Thanks Stefan again for this great test
leo