Merge pull request #17202 from ziglang/llvm17

Update to LLVM 17

1 files changed, 54 insertions, 74 deletions

diff --git a/lib/libcxx/src/shared_mutex.cpp b/lib/libcxx/src/shared_mutex.cpp
index 73d4dc1c1c..49a51e0271 100644
--- a/lib/libcxx/src/shared_mutex.cpp
+++ b/lib/libcxx/src/shared_mutex.cpp
@@ -10,106 +10,86 @@
 
 #ifndef _LIBCPP_HAS_NO_THREADS
 
-#include <shared_mutex>
-#if defined(__ELF__) && defined(_LIBCPP_LINK_PTHREAD_LIB)
-#  pragma comment(lib, "pthread")
-#endif
+#  include <mutex>
+#  include <shared_mutex>
+#  if defined(__ELF__) && defined(_LIBCPP_LINK_PTHREAD_LIB)
+#    pragma comment(lib, "pthread")
+#  endif
 
 _LIBCPP_BEGIN_NAMESPACE_STD
 
 // Shared Mutex Base
-__shared_mutex_base::__shared_mutex_base()
-    : __state_(0)
-{
-}
+__shared_mutex_base::__shared_mutex_base() : __state_(0) {}
 
 // Exclusive ownership
 
-void
-__shared_mutex_base::lock()
-{
-    unique_lock<mutex> lk(__mut_);
-    while (__state_ & __write_entered_)
-        __gate1_.wait(lk);
-    __state_ |= __write_entered_;
-    while (__state_ & __n_readers_)
-        __gate2_.wait(lk);
+void __shared_mutex_base::lock() {
+  unique_lock<mutex> lk(__mut_);
+  while (__state_ & __write_entered_)
+    __gate1_.wait(lk);
+  __state_ |= __write_entered_;
+  while (__state_ & __n_readers_)
+    __gate2_.wait(lk);
 }
 
-bool
-__shared_mutex_base::try_lock()
-{
-    unique_lock<mutex> lk(__mut_);
-    if (__state_ == 0)
-    {
-        __state_ = __write_entered_;
-        return true;
-    }
-    return false;
+bool __shared_mutex_base::try_lock() {
+  unique_lock<mutex> lk(__mut_);
+  if (__state_ == 0) {
+    __state_ = __write_entered_;
+    return true;
+  }
+  return false;
 }
 
-void
-__shared_mutex_base::unlock()
-{
-    lock_guard<mutex> _(__mut_);
-    __state_ = 0;
-    __gate1_.notify_all();
+void __shared_mutex_base::unlock() {
+  lock_guard<mutex> _(__mut_);
+  __state_ = 0;
+  __gate1_.notify_all();
 }
 
 // Shared ownership
 
-void
-__shared_mutex_base::lock_shared()
-{
-    unique_lock<mutex> lk(__mut_);
-    while ((__state_ & __write_entered_) || (__state_ & __n_readers_) == __n_readers_)
-        __gate1_.wait(lk);
-    unsigned num_readers = (__state_ & __n_readers_) + 1;
-    __state_ &= ~__n_readers_;
-    __state_ |= num_readers;
-}
-
-bool
-__shared_mutex_base::try_lock_shared()
-{
-    unique_lock<mutex> lk(__mut_);
-    unsigned num_readers = __state_ & __n_readers_;
-    if (!(__state_ & __write_entered_) && num_readers != __n_readers_)
-    {
-        ++num_readers;
-        __state_ &= ~__n_readers_;
-        __state_ |= num_readers;
-        return true;
-    }
-    return false;
+void __shared_mutex_base::lock_shared() {
+  unique_lock<mutex> lk(__mut_);
+  while ((__state_ & __write_entered_) || (__state_ & __n_readers_) == __n_readers_)
+    __gate1_.wait(lk);
+  unsigned num_readers = (__state_ & __n_readers_) + 1;
+  __state_ &= ~__n_readers_;
+  __state_ |= num_readers;
 }
 
-void
-__shared_mutex_base::unlock_shared()
-{
-    lock_guard<mutex> _(__mut_);
-    unsigned num_readers = (__state_ & __n_readers_) - 1;
+bool __shared_mutex_base::try_lock_shared() {
+  unique_lock<mutex> lk(__mut_);
+  unsigned num_readers = __state_ & __n_readers_;
+  if (!(__state_ & __write_entered_) && num_readers != __n_readers_) {
+    ++num_readers;
     __state_ &= ~__n_readers_;
     __state_ |= num_readers;
-    if (__state_ & __write_entered_)
-    {
-        if (num_readers == 0)
-            __gate2_.notify_one();
-    }
-    else
-    {
-        if (num_readers == __n_readers_ - 1)
-            __gate1_.notify_one();
-    }
+    return true;
+  }
+  return false;
 }
 
+void __shared_mutex_base::unlock_shared() {
+  lock_guard<mutex> _(__mut_);
+  unsigned num_readers = (__state_ & __n_readers_) - 1;
+  __state_ &= ~__n_readers_;
+  __state_ |= num_readers;
+  if (__state_ & __write_entered_) {
+    if (num_readers == 0)
+      __gate2_.notify_one();
+  } else {
+    if (num_readers == __n_readers_ - 1)
+      __gate1_.notify_one();
+  }
+}
 
 // Shared Timed Mutex
 // These routines are here for ABI stability
 shared_timed_mutex::shared_timed_mutex() : __base_() {}
-void shared_timed_mutex::lock()     { return __base_.lock(); }
+void shared_timed_mutex::lock() { return __base_.lock(); }
 bool shared_timed_mutex::try_lock() { return __base_.try_lock(); }
-void shared_timed_mutex::unlock()   { return __base_.unlock(); }
+void shared_timed_mutex::unlock() { return __base_.unlock(); }
 void shared_timed_mutex::lock_shared() { return __base_.lock_shared(); }
 bool shared_timed_mutex::try_lock_shared() { return __base_.try_lock_shared(); }
 void shared_timed_mutex::unlock_shared() { return __base_.unlock_shared(); }