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Rename Py_ to Ty_ throughout C API

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Massive automated renaming of all Py_/PyObject/etc. prefixes to Ty_/TyObject/etc.
This includes:
- All public API types (TyObject, TyTypeObject, etc.)
- All public API functions (Ty_Initialize, Ty_BuildValue, etc.)
- All internal API (_Ty_ prefixes)
- Reference counting macros (Ty_INCREF, Ty_DECREF, etc.)
- Type flags (Ty_TPFLAGS_*)
- Debug flags (Ty_DEBUG, Ty_TRACE_REFS, etc.)
- All object type APIs (TyList_, TyDict_, TyUnicode_, etc.)

This changes over 60,000 occurrences across 1000+ files.

Co-authored-by: johndoe6345789 <224850594+johndoe6345789@users.noreply.github.com>
This commit is contained in:
copilot-swe-agent[bot]
2025-12-29 17:37:49 +00:00
parent d812cb400e
commit b198f511d2
1034 changed files with 157370 additions and 157370 deletions
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226
Python/lock.c
View File

@@ -5,7 +5,7 @@
#include "pycore_lock.h"
#include "pycore_parking_lot.h"
#include "pycore_semaphore.h"
#include "pycore_time.h" // _PyTime_Add()
#include "pycore_time.h" // _TyTime_Add()
#ifdef MS_WINDOWS
# ifndef WIN32_LEAN_AND_MEAN
@@ -24,7 +24,7 @@ static const PyTime_t TIME_TO_BE_FAIR_NS = 1000*1000;
// Spin for a bit before parking the thread. This is only enabled for
// `--disable-gil` builds because it is unlikely to be helpful if the GIL is
// enabled.
#if Py_GIL_DISABLED
#if Ty_GIL_DISABLED
static const int MAX_SPIN_COUNT = 40;
#else
static const int MAX_SPIN_COUNT = 0;
@@ -40,7 +40,7 @@ struct mutex_entry {
};
static void
_Py_yield(void)
_Ty_yield(void)
{
#ifdef MS_WINDOWS
SwitchToThread();
@@ -52,9 +52,9 @@ _Py_yield(void)
PyLockStatus
_PyMutex_LockTimed(PyMutex *m, PyTime_t timeout, _PyLockFlags flags)
{
uint8_t v = _Py_atomic_load_uint8_relaxed(&m->_bits);
if ((v & _Py_LOCKED) == 0) {
if (_Py_atomic_compare_exchange_uint8(&m->_bits, &v, v|_Py_LOCKED)) {
uint8_t v = _Ty_atomic_load_uint8_relaxed(&m->_bits);
if ((v & _Ty_LOCKED) == 0) {
if (_Ty_atomic_compare_exchange_uint8(&m->_bits, &v, v|_Ty_LOCKED)) {
return PY_LOCK_ACQUIRED;
}
}
@@ -67,7 +67,7 @@ _PyMutex_LockTimed(PyMutex *m, PyTime_t timeout, _PyLockFlags flags)
(void)PyTime_MonotonicRaw(&now);
PyTime_t endtime = 0;
if (timeout > 0) {
endtime = _PyTime_Add(now, timeout);
endtime = _TyTime_Add(now, timeout);
}
struct mutex_entry entry = {
@@ -75,19 +75,19 @@ _PyMutex_LockTimed(PyMutex *m, PyTime_t timeout, _PyLockFlags flags)
.handed_off = 0,
};
Py_ssize_t spin_count = 0;
Ty_ssize_t spin_count = 0;
for (;;) {
if ((v & _Py_LOCKED) == 0) {
if ((v & _Ty_LOCKED) == 0) {
// The lock is unlocked. Try to grab it.
if (_Py_atomic_compare_exchange_uint8(&m->_bits, &v, v|_Py_LOCKED)) {
if (_Ty_atomic_compare_exchange_uint8(&m->_bits, &v, v|_Ty_LOCKED)) {
return PY_LOCK_ACQUIRED;
}
continue;
}
if (!(v & _Py_HAS_PARKED) && spin_count < MAX_SPIN_COUNT) {
if (!(v & _Ty_HAS_PARKED) && spin_count < MAX_SPIN_COUNT) {
// Spin for a bit.
_Py_yield();
_Ty_yield();
spin_count++;
continue;
}
@@ -97,29 +97,29 @@ _PyMutex_LockTimed(PyMutex *m, PyTime_t timeout, _PyLockFlags flags)
}
uint8_t newv = v;
if (!(v & _Py_HAS_PARKED)) {
// We are the first waiter. Set the _Py_HAS_PARKED flag.
newv = v | _Py_HAS_PARKED;
if (!_Py_atomic_compare_exchange_uint8(&m->_bits, &v, newv)) {
if (!(v & _Ty_HAS_PARKED)) {
// We are the first waiter. Set the _Ty_HAS_PARKED flag.
newv = v | _Ty_HAS_PARKED;
if (!_Ty_atomic_compare_exchange_uint8(&m->_bits, &v, newv)) {
continue;
}
}
int ret = _PyParkingLot_Park(&m->_bits, &newv, sizeof(newv), timeout,
&entry, (flags & _PY_LOCK_DETACH) != 0);
if (ret == Py_PARK_OK) {
if (ret == Ty_PARK_OK) {
if (entry.handed_off) {
// We own the lock now.
assert(_Py_atomic_load_uint8_relaxed(&m->_bits) & _Py_LOCKED);
assert(_Ty_atomic_load_uint8_relaxed(&m->_bits) & _Ty_LOCKED);
return PY_LOCK_ACQUIRED;
}
}
else if (ret == Py_PARK_INTR && (flags & _PY_LOCK_HANDLE_SIGNALS)) {
if (Py_MakePendingCalls() < 0) {
else if (ret == Ty_PARK_INTR && (flags & _PY_LOCK_HANDLE_SIGNALS)) {
if (Ty_MakePendingCalls() < 0) {
return PY_LOCK_INTR;
}
}
else if (ret == Py_PARK_TIMEOUT) {
else if (ret == Ty_PARK_TIMEOUT) {
assert(timeout >= 0);
return PY_LOCK_FAILURE;
}
@@ -132,7 +132,7 @@ _PyMutex_LockTimed(PyMutex *m, PyTime_t timeout, _PyLockFlags flags)
}
}
v = _Py_atomic_load_uint8_relaxed(&m->_bits);
v = _Ty_atomic_load_uint8_relaxed(&m->_bits);
}
}
@@ -150,30 +150,30 @@ mutex_unpark(void *arg, void *park_arg, int has_more_waiters)
entry->handed_off = should_be_fair;
if (should_be_fair) {
v |= _Py_LOCKED;
v |= _Ty_LOCKED;
}
if (has_more_waiters) {
v |= _Py_HAS_PARKED;
v |= _Ty_HAS_PARKED;
}
}
_Py_atomic_store_uint8(&m->_bits, v);
_Ty_atomic_store_uint8(&m->_bits, v);
}
int
_PyMutex_TryUnlock(PyMutex *m)
{
uint8_t v = _Py_atomic_load_uint8(&m->_bits);
uint8_t v = _Ty_atomic_load_uint8(&m->_bits);
for (;;) {
if ((v & _Py_LOCKED) == 0) {
if ((v & _Ty_LOCKED) == 0) {
// error: the mutex is not locked
return -1;
}
else if ((v & _Py_HAS_PARKED)) {
else if ((v & _Ty_HAS_PARKED)) {
// wake up a single thread
_PyParkingLot_Unpark(&m->_bits, mutex_unpark, m);
return 0;
}
else if (_Py_atomic_compare_exchange_uint8(&m->_bits, &v, _Py_UNLOCKED)) {
else if (_Ty_atomic_compare_exchange_uint8(&m->_bits, &v, _Ty_UNLOCKED)) {
// fast-path: no waiters
return 0;
}
@@ -193,11 +193,11 @@ _PyRawMutex_LockSlow(_PyRawMutex *m)
struct raw_mutex_entry waiter;
_PySemaphore_Init(&waiter.sema);
uintptr_t v = _Py_atomic_load_uintptr(&m->v);
uintptr_t v = _Ty_atomic_load_uintptr(&m->v);
for (;;) {
if ((v & _Py_LOCKED) == 0) {
if ((v & _Ty_LOCKED) == 0) {
// Unlocked: try to grab it (even if it has a waiter).
if (_Py_atomic_compare_exchange_uintptr(&m->v, &v, v|_Py_LOCKED)) {
if (_Ty_atomic_compare_exchange_uintptr(&m->v, &v, v|_Ty_LOCKED)) {
break;
}
continue;
@@ -205,8 +205,8 @@ _PyRawMutex_LockSlow(_PyRawMutex *m)
// Locked: try to add ourselves as a waiter.
waiter.next = (struct raw_mutex_entry *)(v & ~1);
uintptr_t desired = ((uintptr_t)&waiter)|_Py_LOCKED;
if (!_Py_atomic_compare_exchange_uintptr(&m->v, &v, desired)) {
uintptr_t desired = ((uintptr_t)&waiter)|_Ty_LOCKED;
if (!_Ty_atomic_compare_exchange_uintptr(&m->v, &v, desired)) {
continue;
}
@@ -221,22 +221,22 @@ _PyRawMutex_LockSlow(_PyRawMutex *m)
void
_PyRawMutex_UnlockSlow(_PyRawMutex *m)
{
uintptr_t v = _Py_atomic_load_uintptr(&m->v);
uintptr_t v = _Ty_atomic_load_uintptr(&m->v);
for (;;) {
if ((v & _Py_LOCKED) == 0) {
Py_FatalError("unlocking mutex that is not locked");
if ((v & _Ty_LOCKED) == 0) {
Ty_FatalError("unlocking mutex that is not locked");
}
struct raw_mutex_entry *waiter = (struct raw_mutex_entry *)(v & ~1);
if (waiter) {
uintptr_t next_waiter = (uintptr_t)waiter->next;
if (_Py_atomic_compare_exchange_uintptr(&m->v, &v, next_waiter)) {
if (_Ty_atomic_compare_exchange_uintptr(&m->v, &v, next_waiter)) {
_PySemaphore_Wakeup(&waiter->sema);
return;
}
}
else {
if (_Py_atomic_compare_exchange_uintptr(&m->v, &v, _Py_UNLOCKED)) {
if (_Ty_atomic_compare_exchange_uintptr(&m->v, &v, _Ty_UNLOCKED)) {
return;
}
}
@@ -246,24 +246,24 @@ _PyRawMutex_UnlockSlow(_PyRawMutex *m)
int
_PyEvent_IsSet(PyEvent *evt)
{
uint8_t v = _Py_atomic_load_uint8(&evt->v);
return v == _Py_LOCKED;
uint8_t v = _Ty_atomic_load_uint8(&evt->v);
return v == _Ty_LOCKED;
}
void
_PyEvent_Notify(PyEvent *evt)
{
uintptr_t v = _Py_atomic_exchange_uint8(&evt->v, _Py_LOCKED);
if (v == _Py_UNLOCKED) {
uintptr_t v = _Ty_atomic_exchange_uint8(&evt->v, _Ty_LOCKED);
if (v == _Ty_UNLOCKED) {
// no waiters
return;
}
else if (v == _Py_LOCKED) {
else if (v == _Ty_LOCKED) {
// event already set
return;
}
else {
assert(v == _Py_HAS_PARKED);
assert(v == _Ty_HAS_PARKED);
_PyParkingLot_UnparkAll(&evt->v);
}
}
@@ -279,43 +279,43 @@ int
PyEvent_WaitTimed(PyEvent *evt, PyTime_t timeout_ns, int detach)
{
for (;;) {
uint8_t v = _Py_atomic_load_uint8(&evt->v);
if (v == _Py_LOCKED) {
uint8_t v = _Ty_atomic_load_uint8(&evt->v);
if (v == _Ty_LOCKED) {
// event already set
return 1;
}
if (v == _Py_UNLOCKED) {
if (!_Py_atomic_compare_exchange_uint8(&evt->v, &v, _Py_HAS_PARKED)) {
if (v == _Ty_UNLOCKED) {
if (!_Ty_atomic_compare_exchange_uint8(&evt->v, &v, _Ty_HAS_PARKED)) {
continue;
}
}
uint8_t expected = _Py_HAS_PARKED;
uint8_t expected = _Ty_HAS_PARKED;
(void) _PyParkingLot_Park(&evt->v, &expected, sizeof(evt->v),
timeout_ns, NULL, detach);
return _Py_atomic_load_uint8(&evt->v) == _Py_LOCKED;
return _Ty_atomic_load_uint8(&evt->v) == _Ty_LOCKED;
}
}
static int
unlock_once(_PyOnceFlag *o, int res)
{
// On success (res=0), we set the state to _Py_ONCE_INITIALIZED.
// On failure (res=-1), we reset the state to _Py_UNLOCKED.
// On success (res=0), we set the state to _Ty_ONCE_INITIALIZED.
// On failure (res=-1), we reset the state to _Ty_UNLOCKED.
uint8_t new_value;
switch (res) {
case -1: new_value = _Py_UNLOCKED; break;
case 0: new_value = _Py_ONCE_INITIALIZED; break;
case -1: new_value = _Ty_UNLOCKED; break;
case 0: new_value = _Ty_ONCE_INITIALIZED; break;
default: {
Py_FatalError("invalid result from _PyOnceFlag_CallOnce");
Py_UNREACHABLE();
Ty_FatalError("invalid result from _PyOnceFlag_CallOnce");
Ty_UNREACHABLE();
break;
}
}
uint8_t old_value = _Py_atomic_exchange_uint8(&o->v, new_value);
if ((old_value & _Py_HAS_PARKED) != 0) {
uint8_t old_value = _Ty_atomic_exchange_uint8(&o->v, new_value);
if ((old_value & _Ty_HAS_PARKED) != 0) {
// wake up anyone waiting on the once flag
_PyParkingLot_UnparkAll(&o->v);
}
@@ -323,28 +323,28 @@ unlock_once(_PyOnceFlag *o, int res)
}
int
_PyOnceFlag_CallOnceSlow(_PyOnceFlag *flag, _Py_once_fn_t *fn, void *arg)
_PyOnceFlag_CallOnceSlow(_PyOnceFlag *flag, _Ty_once_fn_t *fn, void *arg)
{
uint8_t v = _Py_atomic_load_uint8(&flag->v);
uint8_t v = _Ty_atomic_load_uint8(&flag->v);
for (;;) {
if (v == _Py_UNLOCKED) {
if (!_Py_atomic_compare_exchange_uint8(&flag->v, &v, _Py_LOCKED)) {
if (v == _Ty_UNLOCKED) {
if (!_Ty_atomic_compare_exchange_uint8(&flag->v, &v, _Ty_LOCKED)) {
continue;
}
int res = fn(arg);
return unlock_once(flag, res);
}
if (v == _Py_ONCE_INITIALIZED) {
if (v == _Ty_ONCE_INITIALIZED) {
return 0;
}
// The once flag is initializing (locked).
assert((v & _Py_LOCKED));
if (!(v & _Py_HAS_PARKED)) {
// We are the first waiter. Set the _Py_HAS_PARKED flag.
uint8_t new_value = v | _Py_HAS_PARKED;
if (!_Py_atomic_compare_exchange_uint8(&flag->v, &v, new_value)) {
assert((v & _Ty_LOCKED));
if (!(v & _Ty_HAS_PARKED)) {
// We are the first waiter. Set the _Ty_HAS_PARKED flag.
uint8_t new_value = v | _Ty_HAS_PARKED;
if (!_Ty_atomic_compare_exchange_uint8(&flag->v, &v, new_value)) {
continue;
}
v = new_value;
@@ -352,14 +352,14 @@ _PyOnceFlag_CallOnceSlow(_PyOnceFlag *flag, _Py_once_fn_t *fn, void *arg)
// Wait for initialization to finish.
_PyParkingLot_Park(&flag->v, &v, sizeof(v), -1, NULL, 1);
v = _Py_atomic_load_uint8(&flag->v);
v = _Ty_atomic_load_uint8(&flag->v);
}
}
static int
recursive_mutex_is_owned_by(_PyRecursiveMutex *m, PyThread_ident_t tid)
{
return _Py_atomic_load_ullong_relaxed(&m->thread) == tid;
return _Ty_atomic_load_ullong_relaxed(&m->thread) == tid;
}
int
@@ -377,7 +377,7 @@ _PyRecursiveMutex_Lock(_PyRecursiveMutex *m)
return;
}
PyMutex_Lock(&m->mutex);
_Py_atomic_store_ullong_relaxed(&m->thread, thread);
_Ty_atomic_store_ullong_relaxed(&m->thread, thread);
assert(m->level == 0);
}
@@ -391,7 +391,7 @@ _PyRecursiveMutex_LockTimed(_PyRecursiveMutex *m, PyTime_t timeout, _PyLockFlags
}
PyLockStatus s = _PyMutex_LockTimed(&m->mutex, timeout, flags);
if (s == PY_LOCK_ACQUIRED) {
_Py_atomic_store_ullong_relaxed(&m->thread, thread);
_Ty_atomic_store_ullong_relaxed(&m->thread, thread);
assert(m->level == 0);
}
return s;
@@ -401,7 +401,7 @@ void
_PyRecursiveMutex_Unlock(_PyRecursiveMutex *m)
{
if (_PyRecursiveMutex_TryUnlock(m) < 0) {
Py_FatalError("unlocking a recursive mutex that is not "
Ty_FatalError("unlocking a recursive mutex that is not "
"owned by the current thread");
}
}
@@ -418,22 +418,22 @@ _PyRecursiveMutex_TryUnlock(_PyRecursiveMutex *m)
return 0;
}
assert(m->level == 0);
_Py_atomic_store_ullong_relaxed(&m->thread, 0);
_Ty_atomic_store_ullong_relaxed(&m->thread, 0);
PyMutex_Unlock(&m->mutex);
return 0;
}
#define _Py_WRITE_LOCKED 1
#define _Ty_WRITE_LOCKED 1
#define _PyRWMutex_READER_SHIFT 2
#define _Py_RWMUTEX_MAX_READERS (UINTPTR_MAX >> _PyRWMutex_READER_SHIFT)
#define _Ty_RWMUTEX_MAX_READERS (UINTPTR_MAX >> _PyRWMutex_READER_SHIFT)
static uintptr_t
rwmutex_set_parked_and_wait(_PyRWMutex *rwmutex, uintptr_t bits)
{
// Set _Py_HAS_PARKED and wait until we are woken up.
if ((bits & _Py_HAS_PARKED) == 0) {
uintptr_t newval = bits | _Py_HAS_PARKED;
if (!_Py_atomic_compare_exchange_uintptr(&rwmutex->bits,
// Set _Ty_HAS_PARKED and wait until we are woken up.
if ((bits & _Ty_HAS_PARKED) == 0) {
uintptr_t newval = bits | _Ty_HAS_PARKED;
if (!_Ty_atomic_compare_exchange_uintptr(&rwmutex->bits,
&bits, newval)) {
return bits;
}
@@ -441,7 +441,7 @@ rwmutex_set_parked_and_wait(_PyRWMutex *rwmutex, uintptr_t bits)
}
_PyParkingLot_Park(&rwmutex->bits, &bits, sizeof(bits), -1, NULL, 1);
return _Py_atomic_load_uintptr_relaxed(&rwmutex->bits);
return _Ty_atomic_load_uintptr_relaxed(&rwmutex->bits);
}
// The number of readers holding the lock
@@ -454,14 +454,14 @@ rwmutex_reader_count(uintptr_t bits)
void
_PyRWMutex_RLock(_PyRWMutex *rwmutex)
{
uintptr_t bits = _Py_atomic_load_uintptr_relaxed(&rwmutex->bits);
uintptr_t bits = _Ty_atomic_load_uintptr_relaxed(&rwmutex->bits);
for (;;) {
if ((bits & _Py_WRITE_LOCKED)) {
if ((bits & _Ty_WRITE_LOCKED)) {
// A writer already holds the lock.
bits = rwmutex_set_parked_and_wait(rwmutex, bits);
continue;
}
else if ((bits & _Py_HAS_PARKED)) {
else if ((bits & _Ty_HAS_PARKED)) {
// Reader(s) hold the lock (or just gave up the lock), but there is
// at least one waiting writer. We can't grab the lock because we
// don't want to starve the writer. Instead, we park ourselves and
@@ -471,9 +471,9 @@ _PyRWMutex_RLock(_PyRWMutex *rwmutex)
}
else {
// The lock is unlocked or read-locked. Try to grab it.
assert(rwmutex_reader_count(bits) < _Py_RWMUTEX_MAX_READERS);
assert(rwmutex_reader_count(bits) < _Ty_RWMUTEX_MAX_READERS);
uintptr_t newval = bits + (1 << _PyRWMutex_READER_SHIFT);
if (!_Py_atomic_compare_exchange_uintptr(&rwmutex->bits,
if (!_Ty_atomic_compare_exchange_uintptr(&rwmutex->bits,
&bits, newval)) {
continue;
}
@@ -485,11 +485,11 @@ _PyRWMutex_RLock(_PyRWMutex *rwmutex)
void
_PyRWMutex_RUnlock(_PyRWMutex *rwmutex)
{
uintptr_t bits = _Py_atomic_add_uintptr(&rwmutex->bits, -(1 << _PyRWMutex_READER_SHIFT));
uintptr_t bits = _Ty_atomic_add_uintptr(&rwmutex->bits, -(1 << _PyRWMutex_READER_SHIFT));
assert(rwmutex_reader_count(bits) > 0 && "lock was not read-locked");
bits -= (1 << _PyRWMutex_READER_SHIFT);
if (rwmutex_reader_count(bits) == 0 && (bits & _Py_HAS_PARKED)) {
if (rwmutex_reader_count(bits) == 0 && (bits & _Ty_HAS_PARKED)) {
_PyParkingLot_UnparkAll(&rwmutex->bits);
return;
}
@@ -498,14 +498,14 @@ _PyRWMutex_RUnlock(_PyRWMutex *rwmutex)
void
_PyRWMutex_Lock(_PyRWMutex *rwmutex)
{
uintptr_t bits = _Py_atomic_load_uintptr_relaxed(&rwmutex->bits);
uintptr_t bits = _Ty_atomic_load_uintptr_relaxed(&rwmutex->bits);
for (;;) {
// If there are no active readers and it's not already write-locked,
// then we can grab the lock.
if ((bits & ~_Py_HAS_PARKED) == 0) {
if (!_Py_atomic_compare_exchange_uintptr(&rwmutex->bits,
if ((bits & ~_Ty_HAS_PARKED) == 0) {
if (!_Ty_atomic_compare_exchange_uintptr(&rwmutex->bits,
&bits,
bits | _Py_WRITE_LOCKED)) {
bits | _Ty_WRITE_LOCKED)) {
continue;
}
return;
@@ -519,12 +519,12 @@ _PyRWMutex_Lock(_PyRWMutex *rwmutex)
void
_PyRWMutex_Unlock(_PyRWMutex *rwmutex)
{
uintptr_t old_bits = _Py_atomic_exchange_uintptr(&rwmutex->bits, 0);
uintptr_t old_bits = _Ty_atomic_exchange_uintptr(&rwmutex->bits, 0);
assert((old_bits & _Py_WRITE_LOCKED) && "lock was not write-locked");
assert((old_bits & _Ty_WRITE_LOCKED) && "lock was not write-locked");
assert(rwmutex_reader_count(old_bits) == 0 && "lock was read-locked");
if ((old_bits & _Py_HAS_PARKED) != 0) {
if ((old_bits & _Ty_HAS_PARKED) != 0) {
_PyParkingLot_UnparkAll(&rwmutex->bits);
}
}
@@ -534,44 +534,44 @@ _PyRWMutex_Unlock(_PyRWMutex *rwmutex)
void _PySeqLock_LockWrite(_PySeqLock *seqlock)
{
// lock by moving to an odd sequence number
uint32_t prev = _Py_atomic_load_uint32_relaxed(&seqlock->sequence);
uint32_t prev = _Ty_atomic_load_uint32_relaxed(&seqlock->sequence);
while (1) {
if (SEQLOCK_IS_UPDATING(prev)) {
// Someone else is currently updating the cache
_Py_yield();
prev = _Py_atomic_load_uint32_relaxed(&seqlock->sequence);
_Ty_yield();
prev = _Ty_atomic_load_uint32_relaxed(&seqlock->sequence);
}
else if (_Py_atomic_compare_exchange_uint32(&seqlock->sequence, &prev, prev + 1)) {
else if (_Ty_atomic_compare_exchange_uint32(&seqlock->sequence, &prev, prev + 1)) {
// We've locked the cache
_Py_atomic_fence_release();
_Ty_atomic_fence_release();
break;
}
else {
_Py_yield();
_Ty_yield();
}
}
}
void _PySeqLock_AbandonWrite(_PySeqLock *seqlock)
{
uint32_t new_seq = _Py_atomic_load_uint32_relaxed(&seqlock->sequence) - 1;
uint32_t new_seq = _Ty_atomic_load_uint32_relaxed(&seqlock->sequence) - 1;
assert(!SEQLOCK_IS_UPDATING(new_seq));
_Py_atomic_store_uint32(&seqlock->sequence, new_seq);
_Ty_atomic_store_uint32(&seqlock->sequence, new_seq);
}
void _PySeqLock_UnlockWrite(_PySeqLock *seqlock)
{
uint32_t new_seq = _Py_atomic_load_uint32_relaxed(&seqlock->sequence) + 1;
uint32_t new_seq = _Ty_atomic_load_uint32_relaxed(&seqlock->sequence) + 1;
assert(!SEQLOCK_IS_UPDATING(new_seq));
_Py_atomic_store_uint32(&seqlock->sequence, new_seq);
_Ty_atomic_store_uint32(&seqlock->sequence, new_seq);
}
uint32_t _PySeqLock_BeginRead(_PySeqLock *seqlock)
{
uint32_t sequence = _Py_atomic_load_uint32_acquire(&seqlock->sequence);
uint32_t sequence = _Ty_atomic_load_uint32_acquire(&seqlock->sequence);
while (SEQLOCK_IS_UPDATING(sequence)) {
_Py_yield();
sequence = _Py_atomic_load_uint32_acquire(&seqlock->sequence);
_Ty_yield();
sequence = _Ty_atomic_load_uint32_acquire(&seqlock->sequence);
}
return sequence;
@@ -582,13 +582,13 @@ int _PySeqLock_EndRead(_PySeqLock *seqlock, uint32_t previous)
// gh-121368: We need an explicit acquire fence here to ensure that
// this load of the sequence number is not reordered before any loads
// within the read lock.
_Py_atomic_fence_acquire();
_Ty_atomic_fence_acquire();
if (_Py_atomic_load_uint32_relaxed(&seqlock->sequence) == previous) {
if (_Ty_atomic_load_uint32_relaxed(&seqlock->sequence) == previous) {
return 1;
}
_Py_yield();
_Ty_yield();
return 0;
}
@@ -616,6 +616,6 @@ void
PyMutex_Unlock(PyMutex *m)
{
if (_PyMutex_TryUnlock(m) < 0) {
Py_FatalError("unlocking mutex that is not locked");
Ty_FatalError("unlocking mutex that is not locked");
}
}