| /* 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 |
| * "AS IS" 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(&refcount_); |
| if (AtomicDecrementByOne(&refcount_) == 0) { |
| _Py_ANNOTATE_HAPPENS_AFTER(&refcount_); |
| delete this; |
| } |
| } |
| |
| Example 2 (message queue): |
| |
| void MyQueue::Put(Type *e) { |
| MutexLock lock(&mu_); |
| _Py_ANNOTATE_HAPPENS_BEFORE(e); |
| PutElementIntoMyQueue(e); |
| } |
| |
| Type *MyQueue::Get() { |
| MutexLock lock(&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 "cv" has succeeded |
| and the lock at address "lock" is held. */ |
| #define _Py_ANNOTATE_CONDVAR_LOCK_WAIT(cv, lock) \ |
| AnnotateCondVarWait(__FILE__, __LINE__, cv, lock) |
| |
| /* Report that wait on the condition variable at "cv" 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 |
| "cv". */ |
| #define _Py_ANNOTATE_CONDVAR_SIGNAL(cv) \ |
| AnnotateCondVarSignal(__FILE__, __LINE__, cv) |
| |
| /* Report that we are about to signal_all on the condition variable at "cv". */ |
| #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->Unlock() and |
| mu->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'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 "address" of size "size" 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 "pcq" 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 "pcq" 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 |
| "pcq". */ |
| #define _Py_ANNOTATE_PCQ_PUT(pcq) \ |
| AnnotatePCQPut(__FILE__, __LINE__, pcq) |
| |
| /* Report that we've just got an element from a FIFO queue at address "pcq". */ |
| #define _Py_ANNOTATE_PCQ_GET(pcq) \ |
| AnnotatePCQGet(__FILE__, __LINE__, pcq) |
| |
| /* ------------------------------------------------------------- |
| Annotations that suppress errors. It is usually better to express the |
| program's synchronization using the other annotations, but these can |
| be used when all else fails. */ |
| |
| /* Report that we may have a benign race at "pointer", with size |
| "sizeof(*(pointer))". "pointer" must be a non-void* pointer. Insert at the |
| point where "pointer" 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 "address". */ |
| #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 "lock" argument is a pointer to the lock object. */ |
| |
| /* Report that a lock has been created at address "lock". */ |
| #define _Py_ANNOTATE_RWLOCK_CREATE(lock) \ |
| AnnotateRWLockCreate(__FILE__, __LINE__, lock) |
| |
| /* Report that the lock at address "lock" is about to be destroyed. */ |
| #define _Py_ANNOTATE_RWLOCK_DESTROY(lock) \ |
| AnnotateRWLockDestroy(__FILE__, __LINE__, lock) |
| |
| /* Report that the lock at address "lock" 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 "lock" 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 "barrier" argument is a pointer to the barrier object. */ |
| |
| /* Report that the "barrier" has been initialized with initial "count". |
| If 'reinitialization_allowed' 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("barrier"). */ |
| #define _Py_ANNOTATE_BARRIER_WAIT_BEFORE(barrier) \ |
| AnnotateBarrierWaitBefore(__FILE__, __LINE__, barrier) |
| |
| /* Report that we just exited barrier_wait("barrier"). */ |
| #define _Py_ANNOTATE_BARRIER_WAIT_AFTER(barrier) \ |
| AnnotateBarrierWaitAfter(__FILE__, __LINE__, barrier) |
| |
| /* Report that the "barrier" 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 "address". |
| 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 "C" { |
| #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 "valgrind.h" 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 "client requests". |
| The file "valgrind.h" may be obtained by doing |
| svn co svn://svn.valgrind.org/valgrind/trunk/include |
| |
| If for some reason you can't use "valgrind.h" 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 && 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 <class T> |
| inline T _Py_ANNOTATE_UNPROTECTED_READ(const volatile T &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(&static_var, \ |
| sizeof(static_var), \ |
| # static_var ": " 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__ */ |
