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.
61 lines
2.4 KiB
C
61 lines
2.4 KiB
C
/* fpending.c -- return the number of pending output bytes on a stream
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Copyright (C) 2000, 2004, 2006-2007, 2009-2017 Free Software Foundation,
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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 of the License, or
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(at your option) 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 Jim Meyering. */
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#include <config.h>
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/* Specification. */
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#include "fpending.h"
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#include "stdio-impl.h"
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/* Return the number of pending (aka buffered, unflushed)
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bytes on the stream, FP, that is open for writing. */
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size_t
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__fpending (FILE *fp)
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{
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/* Most systems provide FILE as a struct and the necessary bitmask in
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<stdio.h>, because they need it for implementing getc() and putc() as
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fast macros. */
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#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
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return fp->_IO_write_ptr - fp->_IO_write_base;
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#elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
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/* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
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return fp->_p - fp->_bf._base;
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#elif defined __EMX__ /* emx+gcc */
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return fp->_ptr - fp->_buffer;
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#elif defined __minix /* Minix */
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return fp_->_ptr - fp_->_buf;
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#elif defined _IOERR /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw, MSVC, NonStop Kernel */
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return (fp_->_ptr ? fp_->_ptr - fp_->_base : 0);
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#elif defined __UCLIBC__ /* uClibc */
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return (fp->__modeflags & __FLAG_WRITING ? fp->__bufpos - fp->__bufstart : 0);
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#elif defined __QNX__ /* QNX */
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return (fp->_Mode & 0x2000 /*_MWRITE*/ ? fp->_Next - fp->_Buf : 0);
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#elif defined __MINT__ /* Atari FreeMiNT */
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return fp->__bufp - fp->__buffer;
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#elif defined EPLAN9 /* Plan9 */
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return fp->wp - fp->buf;
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#elif defined __VMS /* VMS */
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return (*fp)->_ptr - (*fp)->_base;
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#else
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# error "Please port gnulib fpending.c to your platform!"
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return 1;
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#endif
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}
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