sceKernelGetProcessTimeCounter counted nanoseconds and
sceKernelGetProcessTimeCounterFrequency returned 1 GHz, while
sceKernelGetTscFrequency reports the host TSC rate. On the console the
process time counter runs at the TSC frequency, so a title may scale
the counter by sceKernelGetTscFrequency. PPSA34501 does, and its clock
ran 3.4 times slow on a 3.4 GHz host: it paced its 60 Hz frames to
17.6 fps and its game time and audio drifted apart.
The counter now ticks at sceKernelGetTscFrequency, over the same
monotonic clock and APS5_TIME_SCALE, and its frequency is that rate.
A sleep of 1 ms or less returns once the AGC driver sees a GPU batch
complete (a thread waits on the recorder's timeline semaphore), runs a
batch's completion actions, or VideoOut completes a flip. A thread
returns early at most 8 times in a run of back-to-back sleeps; the run
restarts when the thread submits AGC work or did not sleep for the
requested time. APS5_NO_SLEEP_WAKE=1 keeps every sleep in full.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The APC delivery was allocated after SuspendThread, so a target holding
the allocator lock deadlocked the raising thread; it is now allocated
before the suspend. The wait count a raise checks lived in the target's
thread_local storage and dangled once the thread exited; it is now a
member of PthreadPrivate, which TimedWait counts into through a
thread-local pointer bound when the thread starts, and a raise on a
thread that already finished returns ESRCH. TechnicalDebt gets one line
per unverified choice: Windows only, the FreeBSD ucontext layout, the
signal mask, the YMM upper halves, and delivery to threads outside
TimedWait.
AI-assisted: yes
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Run the SIGUSR1 handler recorded by sceKernelInstallExceptionHandler on the
target thread with a PS5 ucontext (uc_mcontext at 0x40, FreeBSD amd64
layout) of its interrupted state:
- on the calling thread, directly;
- on a thread in a libkernel wait, from an APC: the TimedWait waits are
alertable and count themselves in a per-thread wait state, so the
handler runs inside the wait, which then continues;
- on a running thread, by suspending it and redirecting it to an entry
that calls the handler and restores the possibly modified context.
Other signals return EINVAL, as in shadPS4; raising without a handler
throws. Linux still throws.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
libkernel: a TimedWait service for condition variables, semaphores, event flags, rwlocks and
equeues with the scheduler tick; mutex/cond/sem corner cases the title hits; job worker
affinity is opt-in (APS5_JOB_AFFINITY). libc: calloc/realloc heap slot swap, a default
terminate handler with a backtrace, CPU topology helper. libSceRtc export fixes with tests.
libSceVideoOut: APS5_NO_PAD_INPUT ignores host input for unattended measurements,
APS5_FLIP_QUEUE_WAIT keeps a stalled process alive for a debugger. ApplicationHeap and
GuestRtc tests wired into the test build.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0177gthrWEBBfBu5xJDXgBfo
- libc: reserve guest memory in one arena below the PS5 map limit with
MEM_WRITE_WATCH (GuestArena) and a caching guest heap; the allocation
registry gains a generation counter, an invalidator callback for the
driver's page cache and a pin waiter for leased ranges. This replaces
the fault-based GuestMemoryTracking/GuestMemoryBacking layer, whose
files are removed.
- libkernel: mmap/mprotect/munmap on the arena, flexible memory budget,
real sceKernelVirtualQuery; POSIX pthread layer, rwlocks, timed locks,
TSD, event flags; 0.5 ms scheduler tick and high-resolution sleeps;
TSC/clock/time functions; file APIs return SCE errno codes; the APR
file-streaming API.
- libc: vectored crash reporter with backtraces for fatal exceptions,
SIGABRT, UCRT invalid parameters and process exit; SSE4a EXTRQ/INSERTQ
emulation for Intel hosts; %ls/%lc/%S/%C with the guest's 16-bit
wchar_t; hand-written setjmp/longjmp for the guest jmp_buf; a path
alias table for short save-data mount points; more string, stdio and
math exports.
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0177gthrWEBBfBu5xJDXgBfo
memob