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-rw-r--r--absl/synchronization/BUILD.bazel6
-rw-r--r--absl/synchronization/CMakeLists.txt1
-rw-r--r--absl/synchronization/internal/mutex_nonprod.cc325
-rw-r--r--absl/synchronization/internal/mutex_nonprod.inc249
-rw-r--r--absl/synchronization/mutex.h34
-rw-r--r--absl/synchronization/mutex_test.cc4
6 files changed, 2 insertions, 617 deletions
diff --git a/absl/synchronization/BUILD.bazel b/absl/synchronization/BUILD.bazel
index 4d4d6806..b2df4131 100644
--- a/absl/synchronization/BUILD.bazel
+++ b/absl/synchronization/BUILD.bazel
@@ -73,15 +73,13 @@ cc_library(
"internal/create_thread_identity.cc",
"internal/per_thread_sem.cc",
"internal/waiter.cc",
+ "mutex.cc",
"notification.cc",
- ] + select({
- "//conditions:default": ["mutex.cc"],
- }),
+ ],
hdrs = [
"barrier.h",
"blocking_counter.h",
"internal/create_thread_identity.h",
- "internal/mutex_nonprod.inc",
"internal/per_thread_sem.h",
"internal/waiter.h",
"mutex.h",
diff --git a/absl/synchronization/CMakeLists.txt b/absl/synchronization/CMakeLists.txt
index e5bc52fb..c255b03e 100644
--- a/absl/synchronization/CMakeLists.txt
+++ b/absl/synchronization/CMakeLists.txt
@@ -52,7 +52,6 @@ absl_cc_library(
"barrier.h"
"blocking_counter.h"
"internal/create_thread_identity.h"
- "internal/mutex_nonprod.inc"
"internal/per_thread_sem.h"
"internal/waiter.h"
"mutex.h"
diff --git a/absl/synchronization/internal/mutex_nonprod.cc b/absl/synchronization/internal/mutex_nonprod.cc
deleted file mode 100644
index 334c3bc0..00000000
--- a/absl/synchronization/internal/mutex_nonprod.cc
+++ /dev/null
@@ -1,325 +0,0 @@
-// Copyright 2017 The Abseil Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// https://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-// Implementation of a small subset of Mutex and CondVar functionality
-// for platforms where the production implementation hasn't been fully
-// ported yet.
-
-#include "absl/synchronization/mutex.h"
-
-#if defined(_WIN32)
-#include <chrono> // NOLINT(build/c++11)
-#else
-#include <sys/time.h>
-#include <time.h>
-#endif
-
-#include <algorithm>
-
-#include "absl/base/config.h"
-#include "absl/base/internal/raw_logging.h"
-#include "absl/time/time.h"
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-
-void SetMutexDeadlockDetectionMode(OnDeadlockCycle) {}
-void EnableMutexInvariantDebugging(bool) {}
-
-namespace synchronization_internal {
-
-namespace {
-
-// Return the current time plus the timeout.
-absl::Time DeadlineFromTimeout(absl::Duration timeout) {
- return absl::Now() + timeout;
-}
-
-// Limit the deadline to a positive, 32-bit time_t value to accommodate
-// implementation restrictions. This also deals with InfinitePast and
-// InfiniteFuture.
-absl::Time LimitedDeadline(absl::Time deadline) {
- deadline = std::max(absl::FromTimeT(0), deadline);
- deadline = std::min(deadline, absl::FromTimeT(0x7fffffff));
- return deadline;
-}
-
-} // namespace
-
-#if defined(_WIN32)
-
-MutexImpl::MutexImpl() {}
-
-MutexImpl::~MutexImpl() {
- if (locked_) {
- std_mutex_.unlock();
- }
-}
-
-void MutexImpl::Lock() {
- std_mutex_.lock();
- locked_ = true;
-}
-
-bool MutexImpl::TryLock() {
- bool locked = std_mutex_.try_lock();
- if (locked) locked_ = true;
- return locked;
-}
-
-void MutexImpl::Unlock() {
- locked_ = false;
- released_.SignalAll();
- std_mutex_.unlock();
-}
-
-CondVarImpl::CondVarImpl() {}
-
-CondVarImpl::~CondVarImpl() {}
-
-void CondVarImpl::Signal() { std_cv_.notify_one(); }
-
-void CondVarImpl::SignalAll() { std_cv_.notify_all(); }
-
-void CondVarImpl::Wait(MutexImpl* mu) {
- mu->released_.SignalAll();
- std_cv_.wait(mu->std_mutex_);
-}
-
-bool CondVarImpl::WaitWithDeadline(MutexImpl* mu, absl::Time deadline) {
- mu->released_.SignalAll();
- time_t when = ToTimeT(deadline);
- int64_t nanos = ToInt64Nanoseconds(deadline - absl::FromTimeT(when));
- std::chrono::system_clock::time_point deadline_tp =
- std::chrono::system_clock::from_time_t(when) +
- std::chrono::duration_cast<std::chrono::system_clock::duration>(
- std::chrono::nanoseconds(nanos));
- auto deadline_since_epoch =
- std::chrono::duration_cast<std::chrono::duration<double>>(
- deadline_tp - std::chrono::system_clock::from_time_t(0));
- return std_cv_.wait_until(mu->std_mutex_, deadline_tp) ==
- std::cv_status::timeout;
-}
-
-#else // ! _WIN32
-
-MutexImpl::MutexImpl() {
- ABSL_RAW_CHECK(pthread_mutex_init(&pthread_mutex_, nullptr) == 0,
- "pthread error");
-}
-
-MutexImpl::~MutexImpl() {
- if (locked_) {
- ABSL_RAW_CHECK(pthread_mutex_unlock(&pthread_mutex_) == 0, "pthread error");
- }
- ABSL_RAW_CHECK(pthread_mutex_destroy(&pthread_mutex_) == 0, "pthread error");
-}
-
-void MutexImpl::Lock() {
- ABSL_RAW_CHECK(pthread_mutex_lock(&pthread_mutex_) == 0, "pthread error");
- locked_ = true;
-}
-
-bool MutexImpl::TryLock() {
- bool locked = (0 == pthread_mutex_trylock(&pthread_mutex_));
- if (locked) locked_ = true;
- return locked;
-}
-
-void MutexImpl::Unlock() {
- locked_ = false;
- released_.SignalAll();
- ABSL_RAW_CHECK(pthread_mutex_unlock(&pthread_mutex_) == 0, "pthread error");
-}
-
-CondVarImpl::CondVarImpl() {
- ABSL_RAW_CHECK(pthread_cond_init(&pthread_cv_, nullptr) == 0,
- "pthread error");
-}
-
-CondVarImpl::~CondVarImpl() {
- ABSL_RAW_CHECK(pthread_cond_destroy(&pthread_cv_) == 0, "pthread error");
-}
-
-void CondVarImpl::Signal() {
- ABSL_RAW_CHECK(pthread_cond_signal(&pthread_cv_) == 0, "pthread error");
-}
-
-void CondVarImpl::SignalAll() {
- ABSL_RAW_CHECK(pthread_cond_broadcast(&pthread_cv_) == 0, "pthread error");
-}
-
-void CondVarImpl::Wait(MutexImpl* mu) {
- mu->released_.SignalAll();
- ABSL_RAW_CHECK(pthread_cond_wait(&pthread_cv_, &mu->pthread_mutex_) == 0,
- "pthread error");
-}
-
-bool CondVarImpl::WaitWithDeadline(MutexImpl* mu, absl::Time deadline) {
- mu->released_.SignalAll();
- struct timespec ts = ToTimespec(deadline);
- int rc = pthread_cond_timedwait(&pthread_cv_, &mu->pthread_mutex_, &ts);
- if (rc == ETIMEDOUT) return true;
- ABSL_RAW_CHECK(rc == 0, "pthread error");
- return false;
-}
-
-#endif // ! _WIN32
-
-void MutexImpl::Await(const Condition& cond) {
- if (cond.Eval()) return;
- released_.SignalAll();
- do {
- released_.Wait(this);
- } while (!cond.Eval());
-}
-
-bool MutexImpl::AwaitWithDeadline(const Condition& cond, absl::Time deadline) {
- if (cond.Eval()) return true;
- released_.SignalAll();
- while (true) {
- if (released_.WaitWithDeadline(this, deadline)) return false;
- if (cond.Eval()) return true;
- }
-}
-
-} // namespace synchronization_internal
-
-Mutex::Mutex() {}
-
-Mutex::~Mutex() {}
-
-void Mutex::Lock() { impl()->Lock(); }
-
-void Mutex::Unlock() { impl()->Unlock(); }
-
-bool Mutex::TryLock() { return impl()->TryLock(); }
-
-void Mutex::ReaderLock() { Lock(); }
-
-void Mutex::ReaderUnlock() { Unlock(); }
-
-void Mutex::Await(const Condition& cond) { impl()->Await(cond); }
-
-void Mutex::LockWhen(const Condition& cond) {
- Lock();
- Await(cond);
-}
-
-bool Mutex::AwaitWithDeadline(const Condition& cond, absl::Time deadline) {
- return impl()->AwaitWithDeadline(
- cond, synchronization_internal::LimitedDeadline(deadline));
-}
-
-bool Mutex::AwaitWithTimeout(const Condition& cond, absl::Duration timeout) {
- return AwaitWithDeadline(
- cond, synchronization_internal::DeadlineFromTimeout(timeout));
-}
-
-bool Mutex::LockWhenWithDeadline(const Condition& cond, absl::Time deadline) {
- Lock();
- return AwaitWithDeadline(cond, deadline);
-}
-
-bool Mutex::LockWhenWithTimeout(const Condition& cond, absl::Duration timeout) {
- return LockWhenWithDeadline(
- cond, synchronization_internal::DeadlineFromTimeout(timeout));
-}
-
-void Mutex::ReaderLockWhen(const Condition& cond) {
- ReaderLock();
- Await(cond);
-}
-
-bool Mutex::ReaderLockWhenWithTimeout(const Condition& cond,
- absl::Duration timeout) {
- return LockWhenWithTimeout(cond, timeout);
-}
-bool Mutex::ReaderLockWhenWithDeadline(const Condition& cond,
- absl::Time deadline) {
- return LockWhenWithDeadline(cond, deadline);
-}
-
-void Mutex::EnableDebugLog(const char*) {}
-void Mutex::EnableInvariantDebugging(void (*)(void*), void*) {}
-void Mutex::ForgetDeadlockInfo() {}
-void Mutex::AssertHeld() const {}
-void Mutex::AssertReaderHeld() const {}
-void Mutex::AssertNotHeld() const {}
-
-CondVar::CondVar() {}
-
-CondVar::~CondVar() {}
-
-void CondVar::Signal() { impl()->Signal(); }
-
-void CondVar::SignalAll() { impl()->SignalAll(); }
-
-void CondVar::Wait(Mutex* mu) { return impl()->Wait(mu->impl()); }
-
-bool CondVar::WaitWithDeadline(Mutex* mu, absl::Time deadline) {
- return impl()->WaitWithDeadline(
- mu->impl(), synchronization_internal::LimitedDeadline(deadline));
-}
-
-bool CondVar::WaitWithTimeout(Mutex* mu, absl::Duration timeout) {
- return WaitWithDeadline(mu, absl::Now() + timeout);
-}
-
-void CondVar::EnableDebugLog(const char*) {}
-
-#ifdef ABSL_HAVE_THREAD_SANITIZER
-extern "C" void __tsan_read1(void *addr);
-#else
-#define __tsan_read1(addr) // do nothing if TSan not enabled
-#endif
-
-// A function that just returns its argument, dereferenced
-static bool Dereference(void *arg) {
- // ThreadSanitizer does not instrument this file for memory accesses.
- // This function dereferences a user variable that can participate
- // in a data race, so we need to manually tell TSan about this memory access.
- __tsan_read1(arg);
- return *(static_cast<bool *>(arg));
-}
-
-Condition::Condition() {} // null constructor, used for kTrue only
-const Condition Condition::kTrue;
-
-Condition::Condition(bool (*func)(void *), void *arg)
- : eval_(&CallVoidPtrFunction),
- function_(func),
- method_(nullptr),
- arg_(arg) {}
-
-bool Condition::CallVoidPtrFunction(const Condition *c) {
- return (*c->function_)(c->arg_);
-}
-
-Condition::Condition(const bool *cond)
- : eval_(CallVoidPtrFunction),
- function_(Dereference),
- method_(nullptr),
- // const_cast is safe since Dereference does not modify arg
- arg_(const_cast<bool *>(cond)) {}
-
-bool Condition::Eval() const {
- // eval_ == null for kTrue
- return (this->eval_ == nullptr) || (*this->eval_)(this);
-}
-
-void RegisterSymbolizer(bool (*)(const void*, char*, int)) {}
-
-ABSL_NAMESPACE_END
-} // namespace absl
diff --git a/absl/synchronization/internal/mutex_nonprod.inc b/absl/synchronization/internal/mutex_nonprod.inc
deleted file mode 100644
index d83bc8a9..00000000
--- a/absl/synchronization/internal/mutex_nonprod.inc
+++ /dev/null
@@ -1,249 +0,0 @@
-// Do not include. This is an implementation detail of base/mutex.h.
-//
-// Declares three classes:
-//
-// base::internal::MutexImpl - implementation helper for Mutex
-// base::internal::CondVarImpl - implementation helper for CondVar
-// base::internal::SynchronizationStorage<T> - implementation helper for
-// Mutex, CondVar
-
-#include <type_traits>
-
-#if defined(_WIN32)
-#include <condition_variable>
-#include <mutex>
-#else
-#include <pthread.h>
-#endif
-
-#include "absl/base/call_once.h"
-#include "absl/time/time.h"
-
-// Declare that Mutex::ReaderLock is actually Lock(). Intended primarily
-// for tests, and even then as a last resort.
-#ifdef ABSL_MUTEX_READER_LOCK_IS_EXCLUSIVE
-#error ABSL_MUTEX_READER_LOCK_IS_EXCLUSIVE cannot be directly set
-#else
-#define ABSL_MUTEX_READER_LOCK_IS_EXCLUSIVE 1
-#endif
-
-// Declare that Mutex::EnableInvariantDebugging is not implemented.
-// Intended primarily for tests, and even then as a last resort.
-#ifdef ABSL_MUTEX_ENABLE_INVARIANT_DEBUGGING_NOT_IMPLEMENTED
-#error ABSL_MUTEX_ENABLE_INVARIANT_DEBUGGING_NOT_IMPLEMENTED cannot be directly set
-#else
-#define ABSL_MUTEX_ENABLE_INVARIANT_DEBUGGING_NOT_IMPLEMENTED 1
-#endif
-
-namespace absl {
-ABSL_NAMESPACE_BEGIN
-class Condition;
-
-namespace synchronization_internal {
-
-class MutexImpl;
-
-// Do not use this implementation detail of CondVar. Provides most of the
-// implementation, but should not be placed directly in static storage
-// because it will not linker initialize properly. See
-// SynchronizationStorage<T> below for what we mean by linker
-// initialization.
-class CondVarImpl {
- public:
- CondVarImpl();
- CondVarImpl(const CondVarImpl&) = delete;
- CondVarImpl& operator=(const CondVarImpl&) = delete;
- ~CondVarImpl();
-
- void Signal();
- void SignalAll();
- void Wait(MutexImpl* mutex);
- bool WaitWithDeadline(MutexImpl* mutex, absl::Time deadline);
-
- private:
-#if defined(_WIN32)
- std::condition_variable_any std_cv_;
-#else
- pthread_cond_t pthread_cv_;
-#endif
-};
-
-// Do not use this implementation detail of Mutex. Provides most of the
-// implementation, but should not be placed directly in static storage
-// because it will not linker initialize properly. See
-// SynchronizationStorage<T> below for what we mean by linker
-// initialization.
-class MutexImpl {
- public:
- MutexImpl();
- MutexImpl(const MutexImpl&) = delete;
- MutexImpl& operator=(const MutexImpl&) = delete;
- ~MutexImpl();
-
- void Lock();
- bool TryLock();
- void Unlock();
- void Await(const Condition& cond);
- bool AwaitWithDeadline(const Condition& cond, absl::Time deadline);
-
- private:
- friend class CondVarImpl;
-
-#if defined(_WIN32)
- std::mutex std_mutex_;
-#else
- pthread_mutex_t pthread_mutex_;
-#endif
-
- // True if the underlying mutex is locked. If the destructor is entered
- // while locked_, the underlying mutex is unlocked. Mutex supports
- // destruction while locked, but the same is undefined behavior for both
- // pthread_mutex_t and std::mutex.
- bool locked_ = false;
-
- // Signaled before releasing the lock, in support of Await.
- CondVarImpl released_;
-};
-
-// Do not use this implementation detail of CondVar and Mutex. A storage
-// space for T that supports a LinkerInitialized constructor. T must
-// have a default constructor, which is called by the first call to
-// get(). T's destructor is never called if the LinkerInitialized
-// constructor is called.
-//
-// Objects constructed with the default constructor are constructed and
-// destructed like any other object, and should never be allocated in
-// static storage.
-//
-// Objects constructed with the LinkerInitialized constructor should
-// always be in static storage. For such objects, calls to get() are always
-// valid, except from signal handlers.
-//
-// Note that this implementation relies on undefined language behavior that
-// are known to hold for the set of supported compilers. An analysis
-// follows.
-//
-// From the C++11 standard:
-//
-// [basic.life] says an object has non-trivial initialization if it is of
-// class type and it is initialized by a constructor other than a trivial
-// default constructor. (the LinkerInitialized constructor is
-// non-trivial)
-//
-// [basic.life] says the lifetime of an object with a non-trivial
-// constructor begins when the call to the constructor is complete.
-//
-// [basic.life] says the lifetime of an object with non-trivial destructor
-// ends when the call to the destructor begins.
-//
-// [basic.life] p5 specifies undefined behavior when accessing non-static
-// members of an instance outside its
-// lifetime. (SynchronizationStorage::get() access non-static members)
-//
-// So, LinkerInitialized object of SynchronizationStorage uses a
-// non-trivial constructor, which is called at some point during dynamic
-// initialization, and is therefore subject to order of dynamic
-// initialization bugs, where get() is called before the object's
-// constructor is, resulting in undefined behavior.
-//
-// Similarly, a LinkerInitialized SynchronizationStorage object has a
-// non-trivial destructor, and so its lifetime ends at some point during
-// destruction of objects with static storage duration [basic.start.term]
-// p4. There is a window where other exit code could call get() after this
-// occurs, resulting in undefined behavior.
-//
-// Combined, these statements imply that LinkerInitialized instances
-// of SynchronizationStorage<T> rely on undefined behavior.
-//
-// However, in practice, the implementation works on all supported
-// compilers. Specifically, we rely on:
-//
-// a) zero-initialization being sufficient to initialize
-// LinkerInitialized instances for the purposes of calling
-// get(), regardless of when the constructor is called. This is
-// because the is_dynamic_ boolean is correctly zero-initialized to
-// false.
-//
-// b) the LinkerInitialized constructor is a NOP, and immaterial to
-// even to concurrent calls to get().
-//
-// c) the destructor being a NOP for LinkerInitialized objects
-// (guaranteed by a check for !is_dynamic_), and so any concurrent and
-// subsequent calls to get() functioning as if the destructor were not
-// called, by virtue of the instances' storage remaining valid after the
-// destructor runs.
-//
-// d) That a-c apply transitively when SynchronizationStorage<T> is the
-// only member of a class allocated in static storage.
-//
-// Nothing in the language standard guarantees that a-d hold. In practice,
-// these hold in all supported compilers.
-//
-// Future direction:
-//
-// Ideally, we would simply use std::mutex or a similar class, which when
-// allocated statically would support use immediately after static
-// initialization up until static storage is reclaimed (i.e. the properties
-// we require of all "linker initialized" instances).
-//
-// Regarding construction in static storage, std::mutex is required to
-// provide a constexpr default constructor [thread.mutex.class], which
-// ensures the instance's lifetime begins with static initialization
-// [basic.start.init], and so is immune to any problems caused by the order
-// of dynamic initialization. However, as of this writing Microsoft's
-// Visual Studio does not provide a constexpr constructor for std::mutex.
-// See
-// https://blogs.msdn.microsoft.com/vcblog/2015/06/02/constexpr-complete-for-vs-2015-rtm-c11-compiler-c17-stl/
-//
-// Regarding destruction of instances in static storage, [basic.life] does
-// say an object ends when storage in which the occupies is released, in
-// the case of non-trivial destructor. However, std::mutex is not specified
-// to have a trivial destructor.
-//
-// So, we would need a class with a constexpr default constructor and a
-// trivial destructor. Today, we can achieve neither desired property using
-// std::mutex directly.
-template <typename T>
-class SynchronizationStorage {
- public:
- // Instances allocated on the heap or on the stack should use the default
- // constructor.
- SynchronizationStorage()
- : destruct_(true), once_() {}
-
- constexpr explicit SynchronizationStorage(absl::ConstInitType)
- : destruct_(false), once_(), space_{{0}} {}
-
- SynchronizationStorage(SynchronizationStorage&) = delete;
- SynchronizationStorage& operator=(SynchronizationStorage&) = delete;
-
- ~SynchronizationStorage() {
- if (destruct_) {
- get()->~T();
- }
- }
-
- // Retrieve the object in storage. This is fast and thread safe, but does
- // incur the cost of absl::call_once().
- T* get() {
- absl::call_once(once_, SynchronizationStorage::Construct, this);
- return reinterpret_cast<T*>(&space_);
- }
-
- private:
- static void Construct(SynchronizationStorage<T>* self) {
- new (&self->space_) T();
- }
-
- // When true, T's destructor is run when this is destructed.
- const bool destruct_;
-
- absl::once_flag once_;
-
- // An aligned space for the T.
- alignas(T) unsigned char space_[sizeof(T)];
-};
-
-} // namespace synchronization_internal
-ABSL_NAMESPACE_END
-} // namespace absl
diff --git a/absl/synchronization/mutex.h b/absl/synchronization/mutex.h
index 52401fe3..6340bd63 100644
--- a/absl/synchronization/mutex.h
+++ b/absl/synchronization/mutex.h
@@ -72,15 +72,6 @@
#include "absl/synchronization/internal/per_thread_sem.h"
#include "absl/time/time.h"
-// Decide if we should use the non-production implementation because
-// the production implementation hasn't been fully ported yet.
-#ifdef ABSL_INTERNAL_USE_NONPROD_MUTEX
-#error ABSL_INTERNAL_USE_NONPROD_MUTEX cannot be directly set
-#elif defined(ABSL_LOW_LEVEL_ALLOC_MISSING)
-#define ABSL_INTERNAL_USE_NONPROD_MUTEX 1
-#include "absl/synchronization/internal/mutex_nonprod.inc"
-#endif
-
namespace absl {
ABSL_NAMESPACE_BEGIN
@@ -461,15 +452,6 @@ class ABSL_LOCKABLE Mutex {
static void InternalAttemptToUseMutexInFatalSignalHandler();
private:
-#ifdef ABSL_INTERNAL_USE_NONPROD_MUTEX
- friend class CondVar;
-
- synchronization_internal::MutexImpl *impl() { return impl_.get(); }
-
- synchronization_internal::SynchronizationStorage<
- synchronization_internal::MutexImpl>
- impl_;
-#else
std::atomic<intptr_t> mu_; // The Mutex state.
// Post()/Wait() versus associated PerThreadSem; in class for required
@@ -504,7 +486,6 @@ class ABSL_LOCKABLE Mutex {
void Trans(MuHow how); // used for CondVar->Mutex transfer
void Fer(
base_internal::PerThreadSynch *w); // used for CondVar->Mutex transfer
-#endif
// Catch the error of writing Mutex when intending MutexLock.
Mutex(const volatile Mutex * /*ignored*/) {} // NOLINT(runtime/explicit)
@@ -838,17 +819,10 @@ class CondVar {
void EnableDebugLog(const char *name);
private:
-#ifdef ABSL_INTERNAL_USE_NONPROD_MUTEX
- synchronization_internal::CondVarImpl *impl() { return impl_.get(); }
- synchronization_internal::SynchronizationStorage<
- synchronization_internal::CondVarImpl>
- impl_;
-#else
bool WaitCommon(Mutex *mutex, synchronization_internal::KernelTimeout t);
void Remove(base_internal::PerThreadSynch *s);
void Wakeup(base_internal::PerThreadSynch *w);
std::atomic<intptr_t> cv_; // Condition variable state.
-#endif
CondVar(const CondVar&) = delete;
CondVar& operator=(const CondVar&) = delete;
};
@@ -906,12 +880,6 @@ class ABSL_SCOPED_LOCKABLE ReleasableMutexLock {
ReleasableMutexLock& operator=(ReleasableMutexLock&&) = delete;
};
-#ifdef ABSL_INTERNAL_USE_NONPROD_MUTEX
-
-inline constexpr Mutex::Mutex(absl::ConstInitType) : impl_(absl::kConstInit) {}
-
-#else
-
inline Mutex::Mutex() : mu_(0) {
ABSL_TSAN_MUTEX_CREATE(this, __tsan_mutex_not_static);
}
@@ -920,8 +888,6 @@ inline constexpr Mutex::Mutex(absl::ConstInitType) : mu_(0) {}
inline CondVar::CondVar() : cv_(0) {}
-#endif // ABSL_INTERNAL_USE_NONPROD_MUTEX
-
// static
template <typename T>
bool Condition::CastAndCallMethod(const Condition *c) {
diff --git a/absl/synchronization/mutex_test.cc b/absl/synchronization/mutex_test.cc
index 16fc9058..66d5f2aa 100644
--- a/absl/synchronization/mutex_test.cc
+++ b/absl/synchronization/mutex_test.cc
@@ -1002,9 +1002,6 @@ TEST(Mutex, AcquireFromCondition) {
x.mu0.Unlock();
}
-// The deadlock detector is not part of non-prod builds, so do not test it.
-#if !defined(ABSL_INTERNAL_USE_NONPROD_MUTEX)
-
TEST(Mutex, DeadlockDetector) {
absl::SetMutexDeadlockDetectionMode(absl::OnDeadlockCycle::kAbort);
@@ -1158,7 +1155,6 @@ TEST(Mutex, DeadlockIdBug) ABSL_NO_THREAD_SAFETY_ANALYSIS {
c.Lock();
c.Unlock();
}
-#endif // !defined(ABSL_INTERNAL_USE_NONPROD_MUTEX)
// --------------------------------------------------------
// Test for timeouts/deadlines on condition waits that are specified using