Restructure fifo_io event-related tests in order to support test cases

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relating to O_RDWR file descriptors, which while not defined in POSIX,
are in fact used:

(1) Revise assumption that we have two file descriptors when testing I/O
    operations on a fifo.  Provide cleanup routines that handle either
    two or three file descriptors (including a kqueue descriptor).

(2) Add an openfifo_rw() routine to supplement openfifo().

(3) kqueue_setup() now configures an existing kqueue to monitor a new
    file descriptor, rather than allocating a new kqueue to monitor two
    existing file descriptors.

(4) Wrap all direct poll/select/kqueue/FIONREAD interactions in a single
    function, assert_status(), which takes a file descriptor, kqueue
    descriptor, assertion of read/writable/exception states, and
    test description, then tests the assertion.  This reduces the bulk
    of calls in many of the tests, making them shorter, more readable,
    and easier to determine correct.

(5) Add a new test_events_rdwr() function, which performs a basic create/
    write/read event test on a O_RDWR fifo file descriptor.  This is
    currently failed by our fifo code in HEAD due to a bug in FIONREAD
    handling.  Fix to be merged shortly.

...

This commit is contained in:

Robert Watson 2005-09-13 17:15:05 +00:00

parent 544b9dfe25

commit 1c3c40d4c0

1 changed files with 329 additions and 487 deletions

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tools/regression/fifo/fifo_io/fifo_io.c

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