Library import 16 (#2433)

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1 files changed, 0 insertions, 502 deletions

diff --git a/contrib/tools/python3/src/Python/thread_nt.h b/contrib/tools/python3/src/Python/thread_nt.h
deleted file mode 100644
index 26f441bd6d3..00000000000
--- a/contrib/tools/python3/src/Python/thread_nt.h
+++ /dev/null
@@ -1,502 +0,0 @@
-#include "pycore_interp.h"    // _PyInterpreterState.threads.stacksize
-
-/* This code implemented by [email protected] */
-/* Fast NonRecursiveMutex support by Yakov Markovitch, [email protected] */
-/* Eliminated some memory leaks, [email protected] */
-
-#include <windows.h>
-#include <limits.h>
-#ifdef HAVE_PROCESS_H
-#include <process.h>
-#endif
-
-/* options */
-#ifndef _PY_USE_CV_LOCKS
-#define _PY_USE_CV_LOCKS 1     /* use locks based on cond vars */
-#endif
-
-/* Now, define a non-recursive mutex using either condition variables
- * and critical sections (fast) or using operating system mutexes
- * (slow)
- */
-
-#if _PY_USE_CV_LOCKS
-
-#include "condvar.h"
-
-typedef struct _NRMUTEX
-{
-    PyMUTEX_T cs;
-    PyCOND_T cv;
-    int locked;
-} NRMUTEX;
-typedef NRMUTEX *PNRMUTEX;
-
-static PNRMUTEX
-AllocNonRecursiveMutex(void)
-{
-    PNRMUTEX m = (PNRMUTEX)PyMem_RawMalloc(sizeof(NRMUTEX));
-    if (!m)
-        return NULL;
-    if (PyCOND_INIT(&m->cv))
-        goto fail;
-    if (PyMUTEX_INIT(&m->cs)) {
-        PyCOND_FINI(&m->cv);
-        goto fail;
-    }
-    m->locked = 0;
-    return m;
-fail:
-    PyMem_RawFree(m);
-    return NULL;
-}
-
-static VOID
-FreeNonRecursiveMutex(PNRMUTEX mutex)
-{
-    if (mutex) {
-        PyCOND_FINI(&mutex->cv);
-        PyMUTEX_FINI(&mutex->cs);
-        PyMem_RawFree(mutex);
-    }
-}
-
-static DWORD
-EnterNonRecursiveMutex(PNRMUTEX mutex, DWORD milliseconds)
-{
-    DWORD result = WAIT_OBJECT_0;
-    if (PyMUTEX_LOCK(&mutex->cs))
-        return WAIT_FAILED;
-    if (milliseconds == INFINITE) {
-        while (mutex->locked) {
-            if (PyCOND_WAIT(&mutex->cv, &mutex->cs)) {
-                result = WAIT_FAILED;
-                break;
-            }
-        }
-    } else if (milliseconds != 0) {
-        /* wait at least until the deadline */
-        _PyTime_t nanoseconds = _PyTime_FromNanoseconds((_PyTime_t)milliseconds * 1000000);
-        _PyTime_t deadline = _PyTime_Add(_PyTime_GetPerfCounter(), nanoseconds);
-        while (mutex->locked) {
-            _PyTime_t microseconds = _PyTime_AsMicroseconds(nanoseconds,
-                                                            _PyTime_ROUND_TIMEOUT);
-            if (PyCOND_TIMEDWAIT(&mutex->cv, &mutex->cs, microseconds) < 0) {
-                result = WAIT_FAILED;
-                break;
-            }
-            nanoseconds = deadline - _PyTime_GetPerfCounter();
-            if (nanoseconds <= 0) {
-                break;
-            }
-        }
-    }
-    if (!mutex->locked) {
-        mutex->locked = 1;
-        result = WAIT_OBJECT_0;
-    } else if (result == WAIT_OBJECT_0)
-        result = WAIT_TIMEOUT;
-    /* else, it is WAIT_FAILED */
-    PyMUTEX_UNLOCK(&mutex->cs); /* must ignore result here */
-    return result;
-}
-
-static BOOL
-LeaveNonRecursiveMutex(PNRMUTEX mutex)
-{
-    BOOL result;
-    if (PyMUTEX_LOCK(&mutex->cs))
-        return FALSE;
-    mutex->locked = 0;
-    /* condvar APIs return 0 on success. We need to return TRUE on success. */
-    result = !PyCOND_SIGNAL(&mutex->cv);
-    PyMUTEX_UNLOCK(&mutex->cs);
-    return result;
-}
-
-#else /* if ! _PY_USE_CV_LOCKS */
-
-/* NR-locks based on a kernel mutex */
-#define PNRMUTEX HANDLE
-
-static PNRMUTEX
-AllocNonRecursiveMutex(void)
-{
-    return CreateSemaphore(NULL, 1, 1, NULL);
-}
-
-static VOID
-FreeNonRecursiveMutex(PNRMUTEX mutex)
-{
-    /* No in-use check */
-    CloseHandle(mutex);
-}
-
-static DWORD
-EnterNonRecursiveMutex(PNRMUTEX mutex, DWORD milliseconds)
-{
-    return WaitForSingleObjectEx(mutex, milliseconds, FALSE);
-}
-
-static BOOL
-LeaveNonRecursiveMutex(PNRMUTEX mutex)
-{
-    return ReleaseSemaphore(mutex, 1, NULL);
-}
-#endif /* _PY_USE_CV_LOCKS */
-
-unsigned long PyThread_get_thread_ident(void);
-
-#ifdef PY_HAVE_THREAD_NATIVE_ID
-unsigned long PyThread_get_thread_native_id(void);
-#endif
-
-/*
- * Initialization for the current runtime.
- */
-static void
-PyThread__init_thread(void)
-{
-    // Initialization of the C package should not be needed.
-}
-
-/*
- * Thread support.
- */
-
-typedef struct {
-    void (*func)(void*);
-    void *arg;
-} callobj;
-
-/* thunker to call adapt between the function type used by the system's
-thread start function and the internally used one. */
-static unsigned __stdcall
-bootstrap(void *call)
-{
-    callobj *obj = (callobj*)call;
-    void (*func)(void*) = obj->func;
-    void *arg = obj->arg;
-    HeapFree(GetProcessHeap(), 0, obj);
-    func(arg);
-    return 0;
-}
-
-unsigned long
-PyThread_start_new_thread(void (*func)(void *), void *arg)
-{
-    HANDLE hThread;
-    unsigned threadID;
-    callobj *obj;
-
-    if (!initialized)
-        PyThread_init_thread();
-
-    obj = (callobj*)HeapAlloc(GetProcessHeap(), 0, sizeof(*obj));
-    if (!obj)
-        return PYTHREAD_INVALID_THREAD_ID;
-    obj->func = func;
-    obj->arg = arg;
-    PyThreadState *tstate = _PyThreadState_GET();
-    size_t stacksize = tstate ? tstate->interp->threads.stacksize : 0;
-    hThread = (HANDLE)_beginthreadex(0,
-                      Py_SAFE_DOWNCAST(stacksize, Py_ssize_t, unsigned int),
-                      bootstrap, obj,
-                      0, &threadID);
-    if (hThread == 0) {
-        /* I've seen errno == EAGAIN here, which means "there are
-         * too many threads".
-         */
-        int e = errno;
-        threadID = (unsigned)-1;
-        HeapFree(GetProcessHeap(), 0, obj);
-    }
-    else {
-        CloseHandle(hThread);
-    }
-    return threadID;
-}
-
-/*
- * Return the thread Id instead of a handle. The Id is said to uniquely identify the
- * thread in the system
- */
-unsigned long
-PyThread_get_thread_ident(void)
-{
-    if (!initialized)
-        PyThread_init_thread();
-
-    return GetCurrentThreadId();
-}
-
-#ifdef PY_HAVE_THREAD_NATIVE_ID
-/*
- * Return the native Thread ID (TID) of the calling thread.
- * The native ID of a thread is valid and guaranteed to be unique system-wide
- * from the time the thread is created until the thread has been terminated.
- */
-unsigned long
-PyThread_get_thread_native_id(void)
-{
-    if (!initialized) {
-        PyThread_init_thread();
-    }
-
-    DWORD native_id;
-    native_id = GetCurrentThreadId();
-    return (unsigned long) native_id;
-}
-#endif
-
-void _Py_NO_RETURN
-PyThread_exit_thread(void)
-{
-    if (!initialized)
-        exit(0);
-    _endthreadex(0);
-}
-
-/*
- * Lock support. It has to be implemented as semaphores.
- * I [Dag] tried to implement it with mutex but I could find a way to
- * tell whether a thread already own the lock or not.
- */
-PyThread_type_lock
-PyThread_allocate_lock(void)
-{
-    PNRMUTEX mutex;
-
-    if (!initialized)
-        PyThread_init_thread();
-
-    mutex = AllocNonRecursiveMutex() ;
-
-    PyThread_type_lock aLock = (PyThread_type_lock) mutex;
-    assert(aLock);
-
-    return aLock;
-}
-
-void
-PyThread_free_lock(PyThread_type_lock aLock)
-{
-    FreeNonRecursiveMutex(aLock) ;
-}
-
-// WaitForSingleObject() accepts timeout in milliseconds in the range
-// [0; 0xFFFFFFFE] (DWORD type). INFINITE value (0xFFFFFFFF) means no
-// timeout. 0xFFFFFFFE milliseconds is around 49.7 days.
-const DWORD TIMEOUT_MS_MAX = 0xFFFFFFFE;
-
-/*
- * Return 1 on success if the lock was acquired
- *
- * and 0 if the lock was not acquired. This means a 0 is returned
- * if the lock has already been acquired by this thread!
- */
-PyLockStatus
-PyThread_acquire_lock_timed(PyThread_type_lock aLock,
-                            PY_TIMEOUT_T microseconds, int intr_flag)
-{
-    assert(aLock);
-
-    /* Fow now, intr_flag does nothing on Windows, and lock acquires are
-     * uninterruptible.  */
-    PyLockStatus success;
-    PY_TIMEOUT_T milliseconds;
-
-    if (microseconds >= 0) {
-        milliseconds = microseconds / 1000;
-        // Round milliseconds away from zero
-        if (microseconds % 1000 > 0) {
-            milliseconds++;
-        }
-        if (milliseconds > (PY_TIMEOUT_T)TIMEOUT_MS_MAX) {
-            // bpo-41710: PyThread_acquire_lock_timed() cannot report timeout
-            // overflow to the caller, so clamp the timeout to
-            // [0, TIMEOUT_MS_MAX] milliseconds.
-            //
-            // _thread.Lock.acquire() and _thread.RLock.acquire() raise an
-            // OverflowError if microseconds is greater than PY_TIMEOUT_MAX.
-            milliseconds = TIMEOUT_MS_MAX;
-        }
-        assert(milliseconds != INFINITE);
-    }
-    else {
-        milliseconds = INFINITE;
-    }
-
-    if (EnterNonRecursiveMutex((PNRMUTEX)aLock,
-                               (DWORD)milliseconds) == WAIT_OBJECT_0) {
-        success = PY_LOCK_ACQUIRED;
-    }
-    else {
-        success = PY_LOCK_FAILURE;
-    }
-
-    return success;
-}
-int
-PyThread_acquire_lock(PyThread_type_lock aLock, int waitflag)
-{
-    return PyThread_acquire_lock_timed(aLock, waitflag ? -1 : 0, 0);
-}
-
-void
-PyThread_release_lock(PyThread_type_lock aLock)
-{
-    assert(aLock);
-    (void)LeaveNonRecursiveMutex((PNRMUTEX) aLock);
-}
-
-/* minimum/maximum thread stack sizes supported */
-#define THREAD_MIN_STACKSIZE    0x8000          /* 32 KiB */
-#define THREAD_MAX_STACKSIZE    0x10000000      /* 256 MiB */
-
-/* set the thread stack size.
- * Return 0 if size is valid, -1 otherwise.
- */
-static int
-_pythread_nt_set_stacksize(size_t size)
-{
-    /* set to default */
-    if (size == 0) {
-        _PyInterpreterState_GET()->threads.stacksize = 0;
-        return 0;
-    }
-
-    /* valid range? */
-    if (size >= THREAD_MIN_STACKSIZE && size < THREAD_MAX_STACKSIZE) {
-        _PyInterpreterState_GET()->threads.stacksize = size;
-        return 0;
-    }
-
-    return -1;
-}
-
-#define THREAD_SET_STACKSIZE(x) _pythread_nt_set_stacksize(x)
-
-
-/* Thread Local Storage (TLS) API
-
-   This API is DEPRECATED since Python 3.7.  See PEP 539 for details.
-*/
-
-int
-PyThread_create_key(void)
-{
-    DWORD result = TlsAlloc();
-    if (result == TLS_OUT_OF_INDEXES)
-        return -1;
-    return (int)result;
-}
-
-void
-PyThread_delete_key(int key)
-{
-    TlsFree(key);
-}
-
-int
-PyThread_set_key_value(int key, void *value)
-{
-    BOOL ok = TlsSetValue(key, value);
-    return ok ? 0 : -1;
-}
-
-void *
-PyThread_get_key_value(int key)
-{
-    /* because TLS is used in the Py_END_ALLOW_THREAD macro,
-     * it is necessary to preserve the windows error state, because
-     * it is assumed to be preserved across the call to the macro.
-     * Ideally, the macro should be fixed, but it is simpler to
-     * do it here.
-     */
-    DWORD error = GetLastError();
-    void *result = TlsGetValue(key);
-    SetLastError(error);
-    return result;
-}
-
-void
-PyThread_delete_key_value(int key)
-{
-    /* NULL is used as "key missing", and it is also the default
-     * given by TlsGetValue() if nothing has been set yet.
-     */
-    TlsSetValue(key, NULL);
-}
-
-
-/* reinitialization of TLS is not necessary after fork when using
- * the native TLS functions.  And forking isn't supported on Windows either.
- */
-void
-PyThread_ReInitTLS(void)
-{
-}
-
-
-/* Thread Specific Storage (TSS) API
-
-   Platform-specific components of TSS API implementation.
-*/
-
-int
-PyThread_tss_create(Py_tss_t *key)
-{
-    assert(key != NULL);
-    /* If the key has been created, function is silently skipped. */
-    if (key->_is_initialized) {
-        return 0;
-    }
-
-    DWORD result = TlsAlloc();
-    if (result == TLS_OUT_OF_INDEXES) {
-        return -1;
-    }
-    /* In Windows, platform-specific key type is DWORD. */
-    key->_key = result;
-    key->_is_initialized = 1;
-    return 0;
-}
-
-void
-PyThread_tss_delete(Py_tss_t *key)
-{
-    assert(key != NULL);
-    /* If the key has not been created, function is silently skipped. */
-    if (!key->_is_initialized) {
-        return;
-    }
-
-    TlsFree(key->_key);
-    key->_key = TLS_OUT_OF_INDEXES;
-    key->_is_initialized = 0;
-}
-
-int
-PyThread_tss_set(Py_tss_t *key, void *value)
-{
-    assert(key != NULL);
-    BOOL ok = TlsSetValue(key->_key, value);
-    return ok ? 0 : -1;
-}
-
-void *
-PyThread_tss_get(Py_tss_t *key)
-{
-    assert(key != NULL);
-    /* because TSS is used in the Py_END_ALLOW_THREAD macro,
-     * it is necessary to preserve the windows error state, because
-     * it is assumed to be preserved across the call to the macro.
-     * Ideally, the macro should be fixed, but it is simpler to
-     * do it here.
-     */
-    DWORD error = GetLastError();
-    void *result = TlsGetValue(key->_key);
-    SetLastError(error);
-    return result;
-}