On Windows the C runtime appends by seeking to the end and then writing,
so concurrent appends through different descriptors overwrite each other
and lose data. Write and writev on an O_APPEND descriptor now go through
WriteFile at the end-of-file offset, which Windows appends atomically,
and writev gathers its buffers into one append as FreeBSD writes the
whole vector at the end.
flock, fstatfs, ftruncate, fsync, fdatasync, getdirentries, fchmod, futimes and mmap on an archived descriptor acted on its null device and succeeded or failed with an unrelated errno. They now throw NotImplemented, each covered by the kernel archive test; mmap is noexcept, so its refusal is checked through the terminate handler.
sceKernelOpen and open give an archived file a read-only null-device descriptor. Reads, positioned, vectored and AIO reads, seeks, fstat and FIONREAD are served from the archive; dup, dup2 and F_DUPFD share the position. sceKernelStat and sceKernelCheckReachability see archived paths.
Writing opens fail with EROFS, O_CREAT|O_EXCL with EEXIST and O_DIRECTORY on a file with ENOTDIR. Opening an archived directory or one merged with the disk throws until getdents can list it.
A ZArchive named app0.zar beside app0/ is a read-only layer under it. libc opens it at the first path resolution, looks paths missing from app0/ up case-insensitively, reads files across compressed blocks and keeps the archived descriptor table with shared positions.
Resolving an archive-only path through a call that does not read the archive throws instead of failing with ENOENT, as do opendir of a directory present in both places, fdopen of an archived descriptor and chdir into the archive. A path through .. in an archive-only directory resolves.
The cancelled replay's bound was taken from the totals before the torn-tail replay, which already
adds one present pipeline; when a worker reached the graphics recipe before the cancel, the test
failed (13 of 600 runs with 24 in parallel).
Co-Authored-By: Claude <noreply@anthropic.com>
wild 0.10.0 gives no canonical PLT entry to a DSO function whose address a
non-PIE executable takes (wild-linker/wild#2469, fixed after the release by
#2480), so the absolute personality pointer in .eh_frame names a local stub
and every exception reaching main is unhandled.
Co-Authored-By: Claude <noreply@anthropic.com>
On Windows the atexit handlers of a DLL run after the process has ended
its other threads, so the logger thread can be gone with lines still
queued and the unbounded Flush waits forever (guest_shader_link timed
out on 4 of the last 7 completed main builds since #6371). Run the bounded
FlushAtEnd there instead.
Co-Authored-By: Claude <noreply@anthropic.com>
The test set neither mode, so ctest ran only the two-lane form. It now
recompiles each program two-lane and then spanned through
SpirvTarget::spannedWaves, checks that the spanned module asks for full
subgroups, and skips the spanned pass on a device without full 32-lane
compute subgroups.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
APS5_SPANNED_WAVE is now read once by the driver, which sets
SpirvTarget::spannedWaves only on a device with 32-lane compute subgroup
control and computeFullSubgroups. The recompiler no longer reads the
environment. The field is part of the cache key and of the request
serialization (version 32), so a cached or replayed module keeps the mode
it was built in.
A spanned module numbers its lanes SubgroupId * 32 +
SubgroupLocalInvocationId, which needs two full 32-lane subgroups. The
artifact records this as fullSubgroups (disk cache and pipeline identity
included), and the driver creates those pipelines with
REQUIRE_FULL_SUBGROUPS. Compute pipeline captures accept the flag with a
required subgroup size.
The two-lane fallback now catches only SpannedWaveUnsupported, thrown for
a shuffle wider than 32 bits; other emit errors surface as before.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A program that stores to a 2D multisampled texture writes the samples of
its host multisampled color target through a storage view. Targets are
created without storage usage; the first storage binding that resolves
to a target moves it to an image with storage usage, copying its samples
once, and keeps the previous image until the target is released. Storage
usage needs the device's shaderStorageImageMultisample feature and its
format at the target's sample count. A surface no draw rendered to is
created from its uniform color memory, as for sampling; other color
memory still throws.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The layout guards only build on Linux with libstdc++, so a Windows or
macOS build of main after #5884 wrote journals whose mesh records lack
outputPrimitiveSize under the new shader-cache source version. The
journal format is now 3, so such a file is discarded instead of being
read with the new codec. MarcZX100 pointed this out.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The lock loop that emulates 64-bit LDS atomics runs only on the lanes
the guest's exec mask keeps, so a spanned wave's barrier-based ballot
there was not reached by both host subgroups. When one subgroup had no
active lane the other one paired its barriers with unrelated ones and
left the loop with lanes still pending, or the GPU hung (Ghost of
Yotei, program 0x80003af600). The elect and the lock are already per
host subgroup, so each subgroup now loops until its own lanes are done.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A spanned wave64 program exchanges ballots and shuffles through
workgroup-scope barriers. When a BDA fault stopped one invocation early,
the other 63 would wait at the next barrier forever. Spanned programs
now keep every invocation running and read zeros after a fault, as
programs with wave LDS barriers already do.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
#5884 added MeshConfiguration::outputPrimitiveSize, and #5875's pipeline
journal guards the layouts it encodes. The two merged separately, so on
Linux with libstdc++ PipelineJournal.cpp no longer compiles:
MeshConfiguration is 40 bytes, ShaderStages (which holds an optional
one) 112. The guards now name those sizes, and the recipe codec writes
and reads the new field, so a replayed line-strip geometry pipeline
keeps its two-vertex primitives.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
An import made at map time settles inside the guest's map call, so the mapping thread waits while the kernel maps the pages. A device that imports shared memory through host pointers settles nothing, so the test expects a settle only for a dma-buf import.
Adrià