#49084 [Opn->Fbk]: PSFS_FEED_ME causes stream block

ID: 49084 Updated by: jani@php.net Reported By: morrisdavidd at gmail dot com -Status: Open +Status: Feedback Bug Type: Streams related Operating System: Linux/Unix PHP Version: 5.3.0 New Comment: We must have different idea of "working" or this is what you expect: $ sapi/cli/php -n working_demo.txt bool(true) Loop! xLoop! x Now, what should this output? Previous Comments: ------------------------------------------------------------------------ [2009-07-29 19:00:30] morrisdavidd at gmail dot com See: http://capricorn.physics.fsu.edu/~ddm05/working_demo.txt Or were you asking for something else? The whole fgets vs fread thing shouldn't matter for this bug, I've came across plenty of "you should use fgets instead of fread when not blocking" statements before I submitted this code. So I did test fread which had no changes with respect to the bug except more overhead to extract separate lines.) ------------------------------------------------------------------------ [2009-07-29 13:50:54] jani@php.net Can you please provide reproducing scripts that actually give the expected output with the "goodFilter" ?? And fyi, with non-blocking you should use fread() instead of fgets().. ------------------------------------------------------------------------ [2009-07-28 06:08:58] morrisdavidd at gmail dot com Actual result is when leaving "badFilter".) ------------------------------------------------------------------------ [2009-07-28 06:07:22] morrisdavidd at gmail dot com Description: ------------ According to: http://us3.php.net/manual/en/function.stream-filter-register.php The return value of PSFS_FEED_ME for the method filter of extended classes of php_user_filter means: "Filter processed successfully, however no data was available to return. More data is required from the stream or prior filter." However, using the return value of PSFS_FEED_ME also inadvertently causes a block on stream read requests that should not be blocked (and an infinite poll for data?). Reproduce code: --------------- bug_demo.php: http://capricorn.physics.fsu.edu/~ddm05/bug_demo.txt test2.php: http://capricorn.physics.fsu.edu/~ddm05/test2.txt Expected result: ---------------- When replacing the phrase "badFilter" with "goodFilter" in line 44: bool(true) Loop! xLoop! xxtest2: 1248760722 Loop! xLoop! xLoop! xLoop! xxtest2: 1248760724 Loop! xLoop! xLoop! xLoop! xxtest2: 1248760726 Loop! ... Actual result: -------------- bool(true) Loop! xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx... ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=49084&edit=1