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.
50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
/* Return a safer copy of a file descriptor.
|
|
|
|
Copyright (C) 2005-2006, 2009-2023 Free Software Foundation, Inc.
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <https://www.gnu.org/licenses/>. */
|
|
|
|
/* Written by Paul Eggert. */
|
|
|
|
#include <config.h>
|
|
|
|
#include "unistd-safer.h"
|
|
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
|
|
/* Return FD, unless FD would be a copy of standard input, output, or
|
|
error; in that case, return a duplicate of FD, closing FD. On
|
|
failure to duplicate, close FD, set errno, and return -1. Preserve
|
|
errno if FD is negative, so that the caller can always inspect
|
|
errno when the returned value is negative.
|
|
|
|
This function is usefully wrapped around functions that return file
|
|
descriptors, e.g., fd_safer (open ("file", O_RDONLY)). */
|
|
|
|
int
|
|
fd_safer (int fd)
|
|
{
|
|
if (STDIN_FILENO <= fd && fd <= STDERR_FILENO)
|
|
{
|
|
int f = dup_safer (fd);
|
|
int e = errno;
|
|
close (fd);
|
|
errno = e;
|
|
fd = f;
|
|
}
|
|
|
|
return fd;
|
|
}
|