26 #if defined(_MSC_VER) && defined(_Wp64) 28 #pragma warning (disable: 4244) 32 namespace interface5 {
43 uintptr_t old = operand;
45 if (result==old)
return result;
52 uintptr_t old = operand;
54 if (result==old)
return result;
60 template<
typename T,
typename U>
68 template<
typename T,
typename U>
81 #if TBB_USE_THREADING_TOOLS 126 if ((pred =
writer_tail.compare_and_swap(I, NULL)) != NULL) {
257 __TBB_ASSERT(a_writer_lock !=
writer_head,
"Internal error: About to turn writer_head into dangling reference.");
258 delete a_writer_lock;
301 if (
mutex->is_current_writer()) {
319 if (
mutex->is_current_writer()) {
324 mutex->start_read(
this);
334 __TBB_ASSERT(
mutex->is_current_writer(),
"~scoped_lock() destroyed by thread different than thread that holds lock.");
335 mutex->end_write(
this);
uintptr_t fetch_and_and(atomic< uintptr_t > &operand, uintptr_t value)
tbb_thread::id my_current_writer
Writer that owns the mutex; tbb_thread::id() otherwise.
void const char const char int ITT_FORMAT __itt_group_sync x void const char ITT_FORMAT __itt_group_sync s void ITT_FORMAT __itt_group_sync p void ITT_FORMAT p void ITT_FORMAT p no args __itt_suppress_mode_t unsigned int void size_t ITT_FORMAT d void ITT_FORMAT p void ITT_FORMAT p __itt_model_site __itt_model_site_instance ITT_FORMAT p __itt_model_task __itt_model_task_instance ITT_FORMAT p void ITT_FORMAT p void ITT_FORMAT p void size_t ITT_FORMAT d void ITT_FORMAT p const wchar_t ITT_FORMAT s const char ITT_FORMAT s const char ITT_FORMAT s const char ITT_FORMAT s no args void ITT_FORMAT p size_t ITT_FORMAT d no args const wchar_t const wchar_t ITT_FORMAT s __itt_heap_function void size_t int ITT_FORMAT d __itt_heap_function void ITT_FORMAT p __itt_heap_function void void size_t int ITT_FORMAT d no args no args unsigned int ITT_FORMAT u const __itt_domain __itt_id id
atomic< scoped_lock * > writer_head
The list of pending writers.
scoped_lock()
Construct scoped_lock that is not holding lock.
void const char const char int ITT_FORMAT __itt_group_sync x void const char ITT_FORMAT __itt_group_sync s void ITT_FORMAT __itt_group_sync p void ITT_FORMAT p void ITT_FORMAT p no args __itt_suppress_mode_t unsigned int void size_t ITT_FORMAT d void ITT_FORMAT p void ITT_FORMAT p __itt_model_site __itt_model_site_instance ITT_FORMAT p __itt_model_task __itt_model_task_instance ITT_FORMAT p void ITT_FORMAT p void ITT_FORMAT p void size_t ITT_FORMAT d void ITT_FORMAT p const wchar_t ITT_FORMAT s const char ITT_FORMAT s const char ITT_FORMAT s const char ITT_FORMAT s no args void ITT_FORMAT p size_t ITT_FORMAT d no args const wchar_t const wchar_t ITT_FORMAT s __itt_heap_function void size_t int ITT_FORMAT d __itt_heap_function void ITT_FORMAT p __itt_heap_function void void size_t int ITT_FORMAT d no args no args unsigned int ITT_FORMAT u const __itt_domain __itt_id ITT_FORMAT lu const __itt_domain __itt_id __itt_id __itt_string_handle ITT_FORMAT p const __itt_domain __itt_id ITT_FORMAT p const __itt_domain __itt_id __itt_timestamp __itt_timestamp ITT_FORMAT lu const __itt_domain __itt_id __itt_id __itt_string_handle ITT_FORMAT p const __itt_domain ITT_FORMAT p const __itt_domain __itt_string_handle unsigned long long ITT_FORMAT lu const __itt_domain __itt_id __itt_string_handle __itt_metadata_type size_t void ITT_FORMAT p const __itt_domain __itt_id __itt_string_handle const wchar_t size_t ITT_FORMAT lu const __itt_domain __itt_id head
#define __TBB_ASSERT(predicate, comment)
No-op version of __TBB_ASSERT.
void unblock_readers()
Unblocks pending readers.
#define ITT_SYNC_CREATE(obj, type, name)
void start_read(scoped_lock_read *)
Attempts to acquire read lock.
scoped_lock * next
The next queued competitor for the mutex.
void set_next_writer(scoped_lock *w)
Sets writer_head to w and attempts to unblock.
scoped_lock_read * next
The next queued competitor for the mutex.
bool start_write(scoped_lock *)
Attempts to acquire write lock.
bool is_current_writer()
Checks if current thread holds write lock.
void pause()
Pause for a while.
The scoped lock pattern for write locks.
atomic< scoped_lock_read * > reader_head
The list of pending readers.
void end_read()
Relinquishes read lock by decrementing counter; last reader wakes pending writer.
void throw_exception(exception_id eid)
Versionless convenience wrapper for throw_exception_v4()
atomic< status_t > status
Status flag of the thread associated with this node.
void __TBB_EXPORTED_METHOD internal_destroy()
void __TBB_EXPORTED_METHOD internal_construct()
void __TBB_EXPORTED_METHOD internal_construct(reader_writer_lock &)
void const char const char int ITT_FORMAT __itt_group_sync x void const char ITT_FORMAT __itt_group_sync s void ITT_FORMAT __itt_group_sync p void ITT_FORMAT p void ITT_FORMAT p no args __itt_suppress_mode_t unsigned int void size_t ITT_FORMAT d void ITT_FORMAT p void ITT_FORMAT p __itt_model_site __itt_model_site_instance ITT_FORMAT p __itt_model_task __itt_model_task_instance ITT_FORMAT p void * lock
bool __TBB_EXPORTED_METHOD try_lock()
Tries to acquire the reader_writer_lock for write.
void __TBB_EXPORTED_METHOD internal_destroy()
void spin_wait_while_eq(const volatile T &location, U value)
Spin WHILE the value of the variable is equal to a given value.
#define _T(string_literal)
Standard Windows style macro to markup the string literals.
void const char const char int ITT_FORMAT __itt_group_sync x void const char ITT_FORMAT __itt_group_sync s void ITT_FORMAT __itt_group_sync p void ITT_FORMAT p void ITT_FORMAT p no args __itt_suppress_mode_t unsigned int void size_t ITT_FORMAT d void ITT_FORMAT p void ITT_FORMAT p __itt_model_site __itt_model_site_instance ITT_FORMAT p __itt_model_task __itt_model_task_instance ITT_FORMAT p void ITT_FORMAT p void ITT_FORMAT p void size_t ITT_FORMAT d void ITT_FORMAT p const wchar_t ITT_FORMAT s const char ITT_FORMAT s const char ITT_FORMAT s const char ITT_FORMAT s no args void ITT_FORMAT p size_t ITT_FORMAT d no args const wchar_t const wchar_t ITT_FORMAT s __itt_heap_function void size_t int ITT_FORMAT d __itt_heap_function void ITT_FORMAT p __itt_heap_function void void size_t int ITT_FORMAT d no args no args unsigned int ITT_FORMAT u const __itt_domain __itt_id ITT_FORMAT lu const __itt_domain __itt_id __itt_id __itt_string_handle ITT_FORMAT p const __itt_domain __itt_id ITT_FORMAT p const __itt_domain __itt_id __itt_timestamp __itt_timestamp ITT_FORMAT lu const __itt_domain __itt_id __itt_id __itt_string_handle ITT_FORMAT p const __itt_domain ITT_FORMAT p const __itt_domain __itt_string_handle unsigned long long value
void __TBB_EXPORTED_METHOD internal_construct(reader_writer_lock &)
void const char const char int ITT_FORMAT __itt_group_sync x void const char ITT_FORMAT __itt_group_sync s void ITT_FORMAT __itt_group_sync p void ITT_FORMAT p sync_releasing
atomic< status_t > status
Status flag of the thread associated with this node.
Class that implements exponential backoff.
void spin_wait_while_geq(const volatile T &location, U value)
Spin WHILE the value at the location is greater than or equal to a given value.
#define ITT_NOTIFY(name, obj)
void __TBB_EXPORTED_METHOD internal_destroy()
void __TBB_EXPORTED_METHOD lock_read()
Acquires the reader_writer_lock for read.
bool __TBB_EXPORTED_METHOD try_lock_read()
Tries to acquire the reader_writer_lock for read.
scoped_lock_read()
Construct scoped_lock_read that is not holding lock.
value_type compare_and_swap(value_type value, value_type comparand)
atomic< scoped_lock * > writer_tail
The last node in the list of pending writers.
uintptr_t fetch_and_or(atomic< uintptr_t > &operand, uintptr_t value)
void __TBB_EXPORTED_METHOD lock()
Acquires the reader_writer_lock for write.
Wrapper around the platform's native lock.
Writer-preference reader-writer lock with local-only spinning on readers.
void spin_wait_until_and(const volatile T &location, U value)
Spin UNTIL (location & value) is true.
void end_write(scoped_lock *)
Relinquishes write lock to next waiting writer or group of readers.
void __TBB_EXPORTED_METHOD unlock()
Releases the reader_writer_lock.
void __TBB_AtomicOR(volatile void *operand, uintptr_t addend)
atomic< uintptr_t > rdr_count_and_flags
Status of mutex.
The scoped lock pattern for read locks.