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The cache manager stores buffers with a reference count that dropped to 0.
pipe_reference asserts in this case on debug builds,
so use pipe_reference_init instead.
Signed-off-by: José Fonseca <jfonseca@vmware.com>
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Untested, but seems straightforward.
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Into os/os_thread.h and util/u_atomic.h respectively.
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This was discovered by the pipe_reference api change.
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Historically, parts of mesa code are not strict-aliasing safe, hence
-fno-strict-aliasing is needed to compile (this got forgotten for scons
builds for gallium, which indeed not only caused compiler warnings but also
unexplicable crashes in non-debug builds). However, we should try to eliminate
code not complying with strict-aliasing code at least for gallium.
Hence change pipe_reference functions to make them strict-aliasing compliant.
This adds a bit more complexity (especially for derived classes) but is the
right thing to do, and it does in fact fix a segfault.
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Avoids warnings on 64bit builds.
Use regular unsigned since that's what gallium expects, but use a
typedef to facilitate possible changes in the future.
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Signed-off-by: Thomas Hellstrom <thellstrom-at-vmware-dot-com>
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The core reference counting code is centralized in p_refcnt.h.
This has some consequences related to struct pipe_buffer:
* The screen member of struct pipe_buffer must be initialized, or
pipe_buffer_reference() will crash trying to destroy a buffer with reference
count 0. u_simple_screen takes care of this, but I may have missed some of
the drivers not using it.
* Except for rare exceptions deep in winsys code, buffers must always be
allocated via pipe_buffer_create() or via screen->*buffer_create() rather
than via winsys->*buffer_create().
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The debug functions depend on several util function for os abstractions, and
these depend on debug functions, so a seperate module is not possible.
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move it to pipe/internal/p_winsys_screen.h and start converting
the state trackers to the screen usage
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This reverts commit a6d866f72c88d48d2bcfb3e3c882fdb639b5a8ce.
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Used mostly to aid debugging memory issues or to clean up resources when
the drivers are long lived.
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Second loop was never run. Spotted by Keith.
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In p_thread.h replace _glthread_* functions with new pipe_* functions.
Remove other old cruft.
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Also, rename p_tile.[ch] to u_tile.[ch]
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Reuse cached buffers up to twice as big a requested.
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