9a0d47bcf1
Unix mmap(2) system calls do allow for mapping beyond the end of the file, though what happens after you try to dereference the pointers it gives is unspecified. POSIX[1] says that implementations shouldn't allow it: The system shall always zero-fill any partial page at the end of an object. Further, the system shall never write out any modified portions of the last page of an object which are beyond its end. References within the address range starting at pa and continuing for len bytes to whole pages following the end of an object shall result in delivery of a SIGBUS signal. However, Linux allows this in read-write mode and extends the file (depending on the filesystem). Windows MapViewOfFile never allows mapping beyond the end. [1] http://pubs.opengroup.org/onlinepubs/9699919799/functions/mmap.html Change-Id: Ie67d35dff21147e99ad9fffd14acc8d9a1a0c38d Reviewed-by: Sami Nurmenniemi <sami.nurmenniemi@qt.io> Reviewed-by: Teemu Holappa <teemu.holappa@qt.io> Reviewed-by: Thiago Macieira <thiago.macieira@intel.com> |
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| .. | ||
| auto | ||
| baselineserver | ||
| benchmarks | ||
| global | ||
| manual | ||
| shared | ||
| README | ||
| tests.pro | ||
This directory contains autotests and benchmarks based on Qt Test. In order
to run the autotests reliably, you need to configure a desktop to match the
test environment that these tests are written for.
Linux X11:
* The user must be logged in to an active desktop; you can't run the
autotests without a valid DISPLAY that allows X11 connections.
* The tests are run against a KDE3 or KDE4 desktop.
* Window manager uses "click to focus", and not "focus follows mouse". Many
tests move the mouse cursor around and expect this to not affect focus
and activation.
* Disable "click to activate", i.e., when a window is opened, the window
manager should automatically activate it (give it input focus) and not
wait for the user to click the window.