diff options
Diffstat (limited to 'absl/synchronization/mutex.h')
| -rw-r--r-- | absl/synchronization/mutex.h | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/absl/synchronization/mutex.h b/absl/synchronization/mutex.h index 95726f6b..157b7050 100644 --- a/absl/synchronization/mutex.h +++ b/absl/synchronization/mutex.h @@ -64,6 +64,7 @@ #include <iterator> #include <string> +#include "absl/base/attributes.h" #include "absl/base/const_init.h" #include "absl/base/internal/identity.h" #include "absl/base/internal/low_level_alloc.h" @@ -536,6 +537,7 @@ class ABSL_LOCKABLE Mutex { void Block(base_internal::PerThreadSynch* s); // Wake a thread; return successor. base_internal::PerThreadSynch* Wakeup(base_internal::PerThreadSynch* w); + void Dtor(); friend class CondVar; // for access to Trans()/Fer(). void Trans(MuHow how); // used for CondVar->Mutex transfer @@ -909,7 +911,6 @@ class CondVar { // A `CondVar` allocated on the heap or on the stack can use the this // constructor. CondVar(); - ~CondVar(); // CondVar::Wait() // @@ -1061,6 +1062,21 @@ inline Mutex::Mutex() : mu_(0) { inline constexpr Mutex::Mutex(absl::ConstInitType) : mu_(0) {} +#if !defined(__APPLE__) && !defined(ABSL_BUILD_DLL) +ABSL_ATTRIBUTE_ALWAYS_INLINE +inline Mutex::~Mutex() { Dtor(); } +#endif + +#if defined(NDEBUG) && !defined(ABSL_HAVE_THREAD_SANITIZER) +// Use default (empty) destructor in release build for performance reasons. +// We need to mark both Dtor and ~Mutex as always inline for inconsistent +// builds that use both NDEBUG and !NDEBUG with dynamic libraries. In these +// cases we want the empty functions to dissolve entirely rather than being +// exported from dynamic libraries and potentially override the non-empty ones. +ABSL_ATTRIBUTE_ALWAYS_INLINE +inline void Mutex::Dtor() {} +#endif + inline CondVar::CondVar() : cv_(0) {} // static |