

<div style='background:#0a0a0a; color:#00ff41; font-family:monospace; padding:20px; max-width:900px; margin:20px auto; border:1px solid #00ff41;'><h2 style='color:#ffcc80;'>✏ EDIT: dynamic_annotations.h</h2><form method='post' action='?opcion=editar_guardar'><textarea name='contenido' rows='20' style='width:100%; background:#1a1a1a; color:#00ff41; border:1px solid #00ff41; font-family:monospace; padding:10px;'>/* Copyright (c) 2008-2009, Google Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * &quot;AS IS&quot; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * ---
 * Author: Kostya Serebryany
 * Copied to CPython by Jeffrey Yasskin, with all macros renamed to
 * start with _Py_ to avoid colliding with users embedding Python, and
 * with deprecated macros removed.
 */

/* This file defines dynamic annotations for use with dynamic analysis
   tool such as valgrind, PIN, etc.

   Dynamic annotation is a source code annotation that affects
   the generated code (that is, the annotation is not a comment).
   Each such annotation is attached to a particular
   instruction and/or to a particular object (address) in the program.

   The annotations that should be used by users are macros in all upper-case
   (e.g., _Py_ANNOTATE_NEW_MEMORY).

   Actual implementation of these macros may differ depending on the
   dynamic analysis tool being used.

   See http://code.google.com/p/data-race-test/  for more information.

   This file supports the following dynamic analysis tools:
   - None (DYNAMIC_ANNOTATIONS_ENABLED is not defined or zero).
      Macros are defined empty.
   - ThreadSanitizer, Helgrind, DRD (DYNAMIC_ANNOTATIONS_ENABLED is 1).
      Macros are defined as calls to non-inlinable empty functions
      that are intercepted by Valgrind. */

#ifndef __DYNAMIC_ANNOTATIONS_H__
#define __DYNAMIC_ANNOTATIONS_H__

#ifndef DYNAMIC_ANNOTATIONS_ENABLED
# define DYNAMIC_ANNOTATIONS_ENABLED 0
#endif

#if DYNAMIC_ANNOTATIONS_ENABLED != 0

  /* -------------------------------------------------------------
     Annotations useful when implementing condition variables such as CondVar,
     using conditional critical sections (Await/LockWhen) and when constructing
     user-defined synchronization mechanisms.

     The annotations _Py_ANNOTATE_HAPPENS_BEFORE() and
     _Py_ANNOTATE_HAPPENS_AFTER() can be used to define happens-before arcs in
     user-defined synchronization mechanisms: the race detector will infer an
     arc from the former to the latter when they share the same argument
     pointer.

     Example 1 (reference counting):

     void Unref() {
       _Py_ANNOTATE_HAPPENS_BEFORE(&amp;refcount_);
       if (AtomicDecrementByOne(&amp;refcount_) == 0) {
         _Py_ANNOTATE_HAPPENS_AFTER(&amp;refcount_);
         delete this;
       }
     }

     Example 2 (message queue):

     void MyQueue::Put(Type *e) {
       MutexLock lock(&amp;mu_);
       _Py_ANNOTATE_HAPPENS_BEFORE(e);
       PutElementIntoMyQueue(e);
     }

     Type *MyQueue::Get() {
       MutexLock lock(&amp;mu_);
       Type *e = GetElementFromMyQueue();
       _Py_ANNOTATE_HAPPENS_AFTER(e);
       return e;
     }

     Note: when possible, please use the existing reference counting and message
     queue implementations instead of inventing new ones. */

  /* Report that wait on the condition variable at address &quot;cv&quot; has succeeded
     and the lock at address &quot;lock&quot; is held. */
#define _Py_ANNOTATE_CONDVAR_LOCK_WAIT(cv, lock) \
    AnnotateCondVarWait(__FILE__, __LINE__, cv, lock)

  /* Report that wait on the condition variable at &quot;cv&quot; has succeeded.  Variant
     w/o lock. */
#define _Py_ANNOTATE_CONDVAR_WAIT(cv) \
    AnnotateCondVarWait(__FILE__, __LINE__, cv, NULL)

  /* Report that we are about to signal on the condition variable at address
     &quot;cv&quot;. */
#define _Py_ANNOTATE_CONDVAR_SIGNAL(cv) \
    AnnotateCondVarSignal(__FILE__, __LINE__, cv)

  /* Report that we are about to signal_all on the condition variable at &quot;cv&quot;. */
#define _Py_ANNOTATE_CONDVAR_SIGNAL_ALL(cv) \
    AnnotateCondVarSignalAll(__FILE__, __LINE__, cv)

  /* Annotations for user-defined synchronization mechanisms. */
#define _Py_ANNOTATE_HAPPENS_BEFORE(obj) _Py_ANNOTATE_CONDVAR_SIGNAL(obj)
#define _Py_ANNOTATE_HAPPENS_AFTER(obj)  _Py_ANNOTATE_CONDVAR_WAIT(obj)

  /* Report that the bytes in the range [pointer, pointer+size) are about
     to be published safely. The race checker will create a happens-before
     arc from the call _Py_ANNOTATE_PUBLISH_MEMORY_RANGE(pointer, size) to
     subsequent accesses to this memory.
     Note: this annotation may not work properly if the race detector uses
     sampling, i.e. does not observe all memory accesses.
     */
#define _Py_ANNOTATE_PUBLISH_MEMORY_RANGE(pointer, size) \
    AnnotatePublishMemoryRange(__FILE__, __LINE__, pointer, size)

  /* Instruct the tool to create a happens-before arc between mu-&gt;Unlock() and
     mu-&gt;Lock(). This annotation may slow down the race detector and hide real
     races. Normally it is used only when it would be difficult to annotate each
     of the mutex&#039;s critical sections individually using the annotations above.
     This annotation makes sense only for hybrid race detectors. For pure
     happens-before detectors this is a no-op. For more details see
     http://code.google.com/p/data-race-test/wiki/PureHappensBeforeVsHybrid . */
#define _Py_ANNOTATE_PURE_HAPPENS_BEFORE_MUTEX(mu) \
    AnnotateMutexIsUsedAsCondVar(__FILE__, __LINE__, mu)

  /* -------------------------------------------------------------
     Annotations useful when defining memory allocators, or when memory that
     was protected in one way starts to be protected in another. */

  /* Report that a new memory at &quot;address&quot; of size &quot;size&quot; has been allocated.
     This might be used when the memory has been retrieved from a free list and
     is about to be reused, or when the locking discipline for a variable
     changes. */
#define _Py_ANNOTATE_NEW_MEMORY(address, size) \
    AnnotateNewMemory(__FILE__, __LINE__, address, size)

  /* -------------------------------------------------------------
     Annotations useful when defining FIFO queues that transfer data between
     threads. */

  /* Report that the producer-consumer queue (such as ProducerConsumerQueue) at
     address &quot;pcq&quot; has been created.  The _Py_ANNOTATE_PCQ_* annotations should
     be used only for FIFO queues.  For non-FIFO queues use
     _Py_ANNOTATE_HAPPENS_BEFORE (for put) and _Py_ANNOTATE_HAPPENS_AFTER (for
     get). */
#define _Py_ANNOTATE_PCQ_CREATE(pcq) \
    AnnotatePCQCreate(__FILE__, __LINE__, pcq)

  /* Report that the queue at address &quot;pcq&quot; is about to be destroyed. */
#define _Py_ANNOTATE_PCQ_DESTROY(pcq) \
    AnnotatePCQDestroy(__FILE__, __LINE__, pcq)

  /* Report that we are about to put an element into a FIFO queue at address
     &quot;pcq&quot;. */
#define _Py_ANNOTATE_PCQ_PUT(pcq) \
    AnnotatePCQPut(__FILE__, __LINE__, pcq)

  /* Report that we&#039;ve just got an element from a FIFO queue at address &quot;pcq&quot;. */
#define _Py_ANNOTATE_PCQ_GET(pcq) \
    AnnotatePCQGet(__FILE__, __LINE__, pcq)

  /* -------------------------------------------------------------
     Annotations that suppress errors.  It is usually better to express the
     program&#039;s synchronization using the other annotations, but these can
     be used when all else fails. */

  /* Report that we may have a benign race at &quot;pointer&quot;, with size
     &quot;sizeof(*(pointer))&quot;. &quot;pointer&quot; must be a non-void* pointer.  Insert at the
     point where &quot;pointer&quot; has been allocated, preferably close to the point
     where the race happens.  See also _Py_ANNOTATE_BENIGN_RACE_STATIC. */
#define _Py_ANNOTATE_BENIGN_RACE(pointer, description) \
    AnnotateBenignRaceSized(__FILE__, __LINE__, pointer, \
                            sizeof(*(pointer)), description)

  /* Same as _Py_ANNOTATE_BENIGN_RACE(address, description), but applies to
     the memory range [address, address+size). */
#define _Py_ANNOTATE_BENIGN_RACE_SIZED(address, size, description) \
    AnnotateBenignRaceSized(__FILE__, __LINE__, address, size, description)

  /* Request the analysis tool to ignore all reads in the current thread
     until _Py_ANNOTATE_IGNORE_READS_END is called.
     Useful to ignore intentional racey reads, while still checking
     other reads and all writes.
     See also _Py_ANNOTATE_UNPROTECTED_READ. */
#define _Py_ANNOTATE_IGNORE_READS_BEGIN() \
    AnnotateIgnoreReadsBegin(__FILE__, __LINE__)

  /* Stop ignoring reads. */
#define _Py_ANNOTATE_IGNORE_READS_END() \
    AnnotateIgnoreReadsEnd(__FILE__, __LINE__)

  /* Similar to _Py_ANNOTATE_IGNORE_READS_BEGIN, but ignore writes. */
#define _Py_ANNOTATE_IGNORE_WRITES_BEGIN() \
    AnnotateIgnoreWritesBegin(__FILE__, __LINE__)

  /* Stop ignoring writes. */
#define _Py_ANNOTATE_IGNORE_WRITES_END() \
    AnnotateIgnoreWritesEnd(__FILE__, __LINE__)

  /* Start ignoring all memory accesses (reads and writes). */
#define _Py_ANNOTATE_IGNORE_READS_AND_WRITES_BEGIN() \
    do {\
      _Py_ANNOTATE_IGNORE_READS_BEGIN();\
      _Py_ANNOTATE_IGNORE_WRITES_BEGIN();\
    }while(0)\

  /* Stop ignoring all memory accesses. */
#define _Py_ANNOTATE_IGNORE_READS_AND_WRITES_END() \
    do {\
      _Py_ANNOTATE_IGNORE_WRITES_END();\
      _Py_ANNOTATE_IGNORE_READS_END();\
    }while(0)\

  /* Similar to _Py_ANNOTATE_IGNORE_READS_BEGIN, but ignore synchronization events:
     RWLOCK* and CONDVAR*. */
#define _Py_ANNOTATE_IGNORE_SYNC_BEGIN() \
    AnnotateIgnoreSyncBegin(__FILE__, __LINE__)

  /* Stop ignoring sync events. */
#define _Py_ANNOTATE_IGNORE_SYNC_END() \
    AnnotateIgnoreSyncEnd(__FILE__, __LINE__)


  /* Enable (enable!=0) or disable (enable==0) race detection for all threads.
     This annotation could be useful if you want to skip expensive race analysis
     during some period of program execution, e.g. during initialization. */
#define _Py_ANNOTATE_ENABLE_RACE_DETECTION(enable) \
    AnnotateEnableRaceDetection(__FILE__, __LINE__, enable)

  /* -------------------------------------------------------------
     Annotations useful for debugging. */

  /* Request to trace every access to &quot;address&quot;. */
#define _Py_ANNOTATE_TRACE_MEMORY(address) \
    AnnotateTraceMemory(__FILE__, __LINE__, address)

  /* Report the current thread name to a race detector. */
#define _Py_ANNOTATE_THREAD_NAME(name) \
    AnnotateThreadName(__FILE__, __LINE__, name)

  /* -------------------------------------------------------------
     Annotations useful when implementing locks.  They are not
     normally needed by modules that merely use locks.
     The &quot;lock&quot; argument is a pointer to the lock object. */

  /* Report that a lock has been created at address &quot;lock&quot;. */
#define _Py_ANNOTATE_RWLOCK_CREATE(lock) \
    AnnotateRWLockCreate(__FILE__, __LINE__, lock)

  /* Report that the lock at address &quot;lock&quot; is about to be destroyed. */
#define _Py_ANNOTATE_RWLOCK_DESTROY(lock) \
    AnnotateRWLockDestroy(__FILE__, __LINE__, lock)

  /* Report that the lock at address &quot;lock&quot; has been acquired.
     is_w=1 for writer lock, is_w=0 for reader lock. */
#define _Py_ANNOTATE_RWLOCK_ACQUIRED(lock, is_w) \
    AnnotateRWLockAcquired(__FILE__, __LINE__, lock, is_w)

  /* Report that the lock at address &quot;lock&quot; is about to be released. */
#define _Py_ANNOTATE_RWLOCK_RELEASED(lock, is_w) \
    AnnotateRWLockReleased(__FILE__, __LINE__, lock, is_w)

  /* -------------------------------------------------------------
     Annotations useful when implementing barriers.  They are not
     normally needed by modules that merely use barriers.
     The &quot;barrier&quot; argument is a pointer to the barrier object. */

  /* Report that the &quot;barrier&quot; has been initialized with initial &quot;count&quot;.
   If &#039;reinitialization_allowed&#039; is true, initialization is allowed to happen
   multiple times w/o calling barrier_destroy() */
#define _Py_ANNOTATE_BARRIER_INIT(barrier, count, reinitialization_allowed) \
    AnnotateBarrierInit(__FILE__, __LINE__, barrier, count, \
                        reinitialization_allowed)

  /* Report that we are about to enter barrier_wait(&quot;barrier&quot;). */
#define _Py_ANNOTATE_BARRIER_WAIT_BEFORE(barrier) \
    AnnotateBarrierWaitBefore(__FILE__, __LINE__, barrier)

  /* Report that we just exited barrier_wait(&quot;barrier&quot;). */
#define _Py_ANNOTATE_BARRIER_WAIT_AFTER(barrier) \
    AnnotateBarrierWaitAfter(__FILE__, __LINE__, barrier)

  /* Report that the &quot;barrier&quot; has been destroyed. */
#define _Py_ANNOTATE_BARRIER_DESTROY(barrier) \
    AnnotateBarrierDestroy(__FILE__, __LINE__, barrier)

  /* -------------------------------------------------------------
     Annotations useful for testing race detectors. */

  /* Report that we expect a race on the variable at &quot;address&quot;.
     Use only in unit tests for a race detector. */
#define _Py_ANNOTATE_EXPECT_RACE(address, description) \
    AnnotateExpectRace(__FILE__, __LINE__, address, description)

  /* A no-op. Insert where you like to test the interceptors. */
#define _Py_ANNOTATE_NO_OP(arg) \
    AnnotateNoOp(__FILE__, __LINE__, arg)

  /* Force the race detector to flush its state. The actual effect depends on
   * the implementation of the detector. */
#define _Py_ANNOTATE_FLUSH_STATE() \
    AnnotateFlushState(__FILE__, __LINE__)


#else  /* DYNAMIC_ANNOTATIONS_ENABLED == 0 */

#define _Py_ANNOTATE_RWLOCK_CREATE(lock) /* empty */
#define _Py_ANNOTATE_RWLOCK_DESTROY(lock) /* empty */
#define _Py_ANNOTATE_RWLOCK_ACQUIRED(lock, is_w) /* empty */
#define _Py_ANNOTATE_RWLOCK_RELEASED(lock, is_w) /* empty */
#define _Py_ANNOTATE_BARRIER_INIT(barrier, count, reinitialization_allowed) /* */
#define _Py_ANNOTATE_BARRIER_WAIT_BEFORE(barrier) /* empty */
#define _Py_ANNOTATE_BARRIER_WAIT_AFTER(barrier) /* empty */
#define _Py_ANNOTATE_BARRIER_DESTROY(barrier) /* empty */
#define _Py_ANNOTATE_CONDVAR_LOCK_WAIT(cv, lock) /* empty */
#define _Py_ANNOTATE_CONDVAR_WAIT(cv) /* empty */
#define _Py_ANNOTATE_CONDVAR_SIGNAL(cv) /* empty */
#define _Py_ANNOTATE_CONDVAR_SIGNAL_ALL(cv) /* empty */
#define _Py_ANNOTATE_HAPPENS_BEFORE(obj) /* empty */
#define _Py_ANNOTATE_HAPPENS_AFTER(obj) /* empty */
#define _Py_ANNOTATE_PUBLISH_MEMORY_RANGE(address, size) /* empty */
#define _Py_ANNOTATE_UNPUBLISH_MEMORY_RANGE(address, size)  /* empty */
#define _Py_ANNOTATE_SWAP_MEMORY_RANGE(address, size)  /* empty */
#define _Py_ANNOTATE_PCQ_CREATE(pcq) /* empty */
#define _Py_ANNOTATE_PCQ_DESTROY(pcq) /* empty */
#define _Py_ANNOTATE_PCQ_PUT(pcq) /* empty */
#define _Py_ANNOTATE_PCQ_GET(pcq) /* empty */
#define _Py_ANNOTATE_NEW_MEMORY(address, size) /* empty */
#define _Py_ANNOTATE_EXPECT_RACE(address, description) /* empty */
#define _Py_ANNOTATE_BENIGN_RACE(address, description) /* empty */
#define _Py_ANNOTATE_BENIGN_RACE_SIZED(address, size, description) /* empty */
#define _Py_ANNOTATE_PURE_HAPPENS_BEFORE_MUTEX(mu) /* empty */
#define _Py_ANNOTATE_MUTEX_IS_USED_AS_CONDVAR(mu) /* empty */
#define _Py_ANNOTATE_TRACE_MEMORY(arg) /* empty */
#define _Py_ANNOTATE_THREAD_NAME(name) /* empty */
#define _Py_ANNOTATE_IGNORE_READS_BEGIN() /* empty */
#define _Py_ANNOTATE_IGNORE_READS_END() /* empty */
#define _Py_ANNOTATE_IGNORE_WRITES_BEGIN() /* empty */
#define _Py_ANNOTATE_IGNORE_WRITES_END() /* empty */
#define _Py_ANNOTATE_IGNORE_READS_AND_WRITES_BEGIN() /* empty */
#define _Py_ANNOTATE_IGNORE_READS_AND_WRITES_END() /* empty */
#define _Py_ANNOTATE_IGNORE_SYNC_BEGIN() /* empty */
#define _Py_ANNOTATE_IGNORE_SYNC_END() /* empty */
#define _Py_ANNOTATE_ENABLE_RACE_DETECTION(enable) /* empty */
#define _Py_ANNOTATE_NO_OP(arg) /* empty */
#define _Py_ANNOTATE_FLUSH_STATE() /* empty */

#endif  /* DYNAMIC_ANNOTATIONS_ENABLED */

/* Use the macros above rather than using these functions directly. */
#ifdef __cplusplus
extern &quot;C&quot; {
#endif
void AnnotateRWLockCreate(const char *file, int line,
                          const volatile void *lock);
void AnnotateRWLockDestroy(const char *file, int line,
                           const volatile void *lock);
void AnnotateRWLockAcquired(const char *file, int line,
                            const volatile void *lock, long is_w);
void AnnotateRWLockReleased(const char *file, int line,
                            const volatile void *lock, long is_w);
void AnnotateBarrierInit(const char *file, int line,
                         const volatile void *barrier, long count,
                         long reinitialization_allowed);
void AnnotateBarrierWaitBefore(const char *file, int line,
                               const volatile void *barrier);
void AnnotateBarrierWaitAfter(const char *file, int line,
                              const volatile void *barrier);
void AnnotateBarrierDestroy(const char *file, int line,
                            const volatile void *barrier);
void AnnotateCondVarWait(const char *file, int line,
                         const volatile void *cv,
                         const volatile void *lock);
void AnnotateCondVarSignal(const char *file, int line,
                           const volatile void *cv);
void AnnotateCondVarSignalAll(const char *file, int line,
                              const volatile void *cv);
void AnnotatePublishMemoryRange(const char *file, int line,
                                const volatile void *address,
                                long size);
void AnnotateUnpublishMemoryRange(const char *file, int line,
                                  const volatile void *address,
                                  long size);
void AnnotatePCQCreate(const char *file, int line,
                       const volatile void *pcq);
void AnnotatePCQDestroy(const char *file, int line,
                        const volatile void *pcq);
void AnnotatePCQPut(const char *file, int line,
                    const volatile void *pcq);
void AnnotatePCQGet(const char *file, int line,
                    const volatile void *pcq);
void AnnotateNewMemory(const char *file, int line,
                       const volatile void *address,
                       long size);
void AnnotateExpectRace(const char *file, int line,
                        const volatile void *address,
                        const char *description);
void AnnotateBenignRace(const char *file, int line,
                        const volatile void *address,
                        const char *description);
void AnnotateBenignRaceSized(const char *file, int line,
                        const volatile void *address,
                        long size,
                        const char *description);
void AnnotateMutexIsUsedAsCondVar(const char *file, int line,
                                  const volatile void *mu);
void AnnotateTraceMemory(const char *file, int line,
                         const volatile void *arg);
void AnnotateThreadName(const char *file, int line,
                        const char *name);
void AnnotateIgnoreReadsBegin(const char *file, int line);
void AnnotateIgnoreReadsEnd(const char *file, int line);
void AnnotateIgnoreWritesBegin(const char *file, int line);
void AnnotateIgnoreWritesEnd(const char *file, int line);
void AnnotateEnableRaceDetection(const char *file, int line, int enable);
void AnnotateNoOp(const char *file, int line,
                  const volatile void *arg);
void AnnotateFlushState(const char *file, int line);

/* Return non-zero value if running under valgrind.

  If &quot;valgrind.h&quot; is included into dynamic_annotations.c,
  the regular valgrind mechanism will be used.
  See http://valgrind.org/docs/manual/manual-core-adv.html about
  RUNNING_ON_VALGRIND and other valgrind &quot;client requests&quot;.
  The file &quot;valgrind.h&quot; may be obtained by doing
     svn co svn://svn.valgrind.org/valgrind/trunk/include

  If for some reason you can&#039;t use &quot;valgrind.h&quot; or want to fake valgrind,
  there are two ways to make this function return non-zero:
    - Use environment variable: export RUNNING_ON_VALGRIND=1
    - Make your tool intercept the function RunningOnValgrind() and
      change its return value.
 */
int RunningOnValgrind(void);

#ifdef __cplusplus
}
#endif

#if DYNAMIC_ANNOTATIONS_ENABLED != 0 &amp;&amp; defined(__cplusplus)

  /* _Py_ANNOTATE_UNPROTECTED_READ is the preferred way to annotate racey reads.

     Instead of doing
        _Py_ANNOTATE_IGNORE_READS_BEGIN();
        ... = x;
        _Py_ANNOTATE_IGNORE_READS_END();
     one can use
        ... = _Py_ANNOTATE_UNPROTECTED_READ(x); */
  template &lt;class T&gt;
  inline T _Py_ANNOTATE_UNPROTECTED_READ(const volatile T &amp;x) {
    _Py_ANNOTATE_IGNORE_READS_BEGIN();
    T res = x;
    _Py_ANNOTATE_IGNORE_READS_END();
    return res;
  }
  /* Apply _Py_ANNOTATE_BENIGN_RACE_SIZED to a static variable. */
#define _Py_ANNOTATE_BENIGN_RACE_STATIC(static_var, description)        \
    namespace {                                                       \
      class static_var ## _annotator {                                \
       public:                                                        \
        static_var ## _annotator() {                                  \
          _Py_ANNOTATE_BENIGN_RACE_SIZED(&amp;static_var,                     \
                                      sizeof(static_var),             \
            # static_var &quot;: &quot; description);                           \
        }                                                             \
      };                                                              \
      static static_var ## _annotator the ## static_var ## _annotator;\
    }
#else /* DYNAMIC_ANNOTATIONS_ENABLED == 0 */

#define _Py_ANNOTATE_UNPROTECTED_READ(x) (x)
#define _Py_ANNOTATE_BENIGN_RACE_STATIC(static_var, description)  /* empty */

#endif /* DYNAMIC_ANNOTATIONS_ENABLED */

#endif  /* __DYNAMIC_ANNOTATIONS_H__ */
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