vasilito
7686729069
Extract protocol-agnostic FenceTimeline from Intel to shared src/drivers/fence.rs — atomic-based fence tracking suitable for Intel, VIRGL, and AMD drivers. Extract protocol-agnostic SyncobjManager from Intel to shared src/drivers/syncobj.rs — syncobj create/destroy/signal/reset/ wait/query and sync_file fd export/import. Wire both into VirtioDriver: - Add FenceTimeline + SyncobjManager fields - Implement all 5 GpuDriver syncobj trait methods (create, destroy, wait, export_fd, import_fd) - Track fence seqnos in virgl_submit_3d (allocate before submit, signal after completion) Intel fence.rs and syncobj.rs converted to thin re-export modules pointing at shared sources — no behavioral change for Intel driver. This gives Mesa VIRGL userspace the standard DRM syncobj API for GPU/compositor synchronization.
51 lines
1.3 KiB
C
51 lines
1.3 KiB
C
/* Create a pipe.
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Copyright (C) 2009-2023 Free Software Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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This file is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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#include <config.h>
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/* Specification. */
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#include <unistd.h>
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#if defined _WIN32 && ! defined __CYGWIN__
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/* Native Windows API. */
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/* Get _pipe(). */
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# include <io.h>
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/* Get _O_BINARY. */
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# include <fcntl.h>
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int
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pipe (int fd[2])
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{
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/* Mingw changes fd to {-1,-1} on failure, but this violates
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http://austingroupbugs.net/view.php?id=467 */
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int tmp[2];
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int result = _pipe (tmp, 4096, _O_BINARY);
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if (!result)
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{
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fd[0] = tmp[0];
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fd[1] = tmp[1];
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}
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return result;
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}
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#else
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# error "This platform lacks a pipe function, and Gnulib doesn't provide a replacement. This is a bug in Gnulib."
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#endif
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