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.
74 lines
1.8 KiB
C
74 lines
1.8 KiB
C
/* Multithreading primitives.
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Copyright (C) 2005-2017 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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This program 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 General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>. */
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/* Written by Bruno Haible <bruno@clisp.org>, 2005. */
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#include <config.h>
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/* ========================================================================= */
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#if USE_POSIX_THREADS
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/* Use the POSIX threads library. */
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# include <pthread.h>
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# include <stdlib.h>
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# if PTHREAD_IN_USE_DETECTION_HARD
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/* The function to be executed by a dummy thread. */
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static void *
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dummy_thread_func (void *arg)
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{
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return arg;
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}
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int
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glthread_in_use (void)
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{
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static int tested;
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static int result; /* 1: linked with -lpthread, 0: only with libc */
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if (!tested)
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{
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pthread_t thread;
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if (pthread_create (&thread, NULL, dummy_thread_func, NULL) != 0)
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/* Thread creation failed. */
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result = 0;
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else
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{
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/* Thread creation works. */
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void *retval;
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if (pthread_join (thread, &retval) != 0)
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abort ();
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result = 1;
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}
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tested = 1;
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}
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return result;
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}
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# endif
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#endif
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/* ========================================================================= */
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/* This declaration is solely to ensure that after preprocessing
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this file is never empty. */
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typedef int dummy;
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