v8
V8 is Google’s open source high-performance JavaScript and WebAssembly engine, written in C++.
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v8::internal::JSSynchronizationPrimitive Class Reference

#include <js-atomics-synchronization.h>

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Classes

class  BodyDescriptor
 

Public Member Functions

Tagged< Object > NumWaitersForTesting (Isolate *requester)
 
void SetNullWaiterQueueHead ()
 

Static Public Member Functions

static void IsolateDeinit (Isolate *isolate)
 

Static Public Attributes

static constexpr int kEndOfTaggedFieldsOffset = JSObject::kHeaderSize
 

Protected Types

using StateT = uint32_t
 
using HasWaitersField = base::BitField<bool, 0, 1>
 
using IsWaiterQueueLockedField = HasWaitersField::Next<bool, 1>
 
template<class T , int size>
using NextBitField = IsWaiterQueueLockedField::Next<T, size>
 
using DequeueMatcher = std::function<bool(WaiterQueueNode*)>
 

Protected Member Functions

std::atomic< StateT > * AtomicStatePtr ()
 
WaiterQueueNode * DestructivelyGetWaiterQueueHead (Isolate *requester)
 
StateT SetWaiterQueueHead (Isolate *requester, WaiterQueueNode *waiter_head, StateT new_state)
 

Static Protected Member Functions

static void SetWaiterQueueStateOnly (std::atomic< StateT > *state, StateT new_state)
 
static bool TryLockWaiterQueueExplicit (std::atomic< StateT > *state, StateT &expected)
 

Static Protected Attributes

static constexpr StateT kEmptyState = 0
 
static constexpr StateT kWaiterQueueMask
 

Private Member Functions

WaiterQueueNode ** waiter_queue_head_location () const
 

Static Private Member Functions

static void CleanupAsyncWaiterLists (Isolate *isolate, DequeueMatcher matcher)
 

Friends

class WaiterQueueLockGuard
 

Detailed Description

Definition at line 43 of file js-atomics-synchronization.h.

Member Typedef Documentation

◆ DequeueMatcher

using v8::internal::JSSynchronizationPrimitive::DequeueMatcher = std::function<bool(WaiterQueueNode*)>
protected

Definition at line 101 of file js-atomics-synchronization.h.

◆ HasWaitersField

using v8::internal::JSSynchronizationPrimitive::HasWaitersField = base::BitField<bool, 0, 1>
protected

Definition at line 70 of file js-atomics-synchronization.h.

◆ IsWaiterQueueLockedField

using v8::internal::JSSynchronizationPrimitive::IsWaiterQueueLockedField = HasWaitersField::Next<bool, 1>
protected

Definition at line 74 of file js-atomics-synchronization.h.

◆ NextBitField

template<class T , int size>
using v8::internal::JSSynchronizationPrimitive::NextBitField = IsWaiterQueueLockedField::Next<T, size>
protected

Definition at line 77 of file js-atomics-synchronization.h.

◆ StateT

using v8::internal::JSSynchronizationPrimitive::StateT = uint32_t
protected

Definition at line 58 of file js-atomics-synchronization.h.

Member Function Documentation

◆ AtomicStatePtr()

std::atomic< JSSynchronizationPrimitive::StateT > * v8::internal::JSSynchronizationPrimitive::AtomicStatePtr ( )
inlineprotected

Definition at line 28 of file js-atomics-synchronization-inl.h.

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◆ CleanupAsyncWaiterLists()

void v8::internal::JSSynchronizationPrimitive::CleanupAsyncWaiterLists ( Isolate * isolate,
DequeueMatcher matcher )
staticprivate

Definition at line 426 of file js-atomics-synchronization.cc.

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◆ DestructivelyGetWaiterQueueHead()

WaiterQueueNode * v8::internal::JSSynchronizationPrimitive::DestructivelyGetWaiterQueueHead ( Isolate * requester)
inlineprotected

Definition at line 57 of file js-atomics-synchronization-inl.h.

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◆ IsolateDeinit()

void v8::internal::JSSynchronizationPrimitive::IsolateDeinit ( Isolate * isolate)
static

Definition at line 420 of file js-atomics-synchronization.cc.

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◆ NumWaitersForTesting()

Tagged< Object > v8::internal::JSSynchronizationPrimitive::NumWaitersForTesting ( Isolate * requester)

Definition at line 471 of file js-atomics-synchronization.cc.

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◆ SetNullWaiterQueueHead()

void v8::internal::JSSynchronizationPrimitive::SetNullWaiterQueueHead ( )
inline

Definition at line 34 of file js-atomics-synchronization-inl.h.

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◆ SetWaiterQueueHead()

JSSynchronizationPrimitive::StateT v8::internal::JSSynchronizationPrimitive::SetWaiterQueueHead ( Isolate * requester,
WaiterQueueNode * waiter_head,
StateT new_state )
inlineprotected

Definition at line 80 of file js-atomics-synchronization-inl.h.

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◆ SetWaiterQueueStateOnly()

void v8::internal::JSSynchronizationPrimitive::SetWaiterQueueStateOnly ( std::atomic< StateT > * state,
StateT new_state )
staticprotected

Definition at line 459 of file js-atomics-synchronization.cc.

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◆ TryLockWaiterQueueExplicit()

bool v8::internal::JSSynchronizationPrimitive::TryLockWaiterQueueExplicit ( std::atomic< StateT > * state,
StateT & expected )
staticprotected

Definition at line 449 of file js-atomics-synchronization.cc.

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◆ waiter_queue_head_location()

WaiterQueueNode ** v8::internal::JSSynchronizationPrimitive::waiter_queue_head_location ( ) const
inlineprivate

Definition at line 50 of file js-atomics-synchronization-inl.h.

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Friends And Related Symbol Documentation

◆ WaiterQueueLockGuard

friend class WaiterQueueLockGuard
friend

Definition at line 108 of file js-atomics-synchronization.h.

Member Data Documentation

◆ kEmptyState

StateT v8::internal::JSSynchronizationPrimitive::kEmptyState = 0
staticconstexprprotected

Definition at line 103 of file js-atomics-synchronization.h.

◆ kEndOfTaggedFieldsOffset

int v8::internal::JSSynchronizationPrimitive::kEndOfTaggedFieldsOffset = JSObject::kHeaderSize
staticconstexpr

Definition at line 48 of file js-atomics-synchronization.h.

◆ kWaiterQueueMask

StateT v8::internal::JSSynchronizationPrimitive::kWaiterQueueMask
staticconstexprprotected
Initial value:
=
base::BitFieldUnion<HasWaitersField, IsWaiterQueueLockedField>::kMask
v8::base::BitFieldUnion::kMask
static constexpr int kMask
Definition bit-field.h:84

Definition at line 104 of file js-atomics-synchronization.h.

The documentation for this class was generated from the following files: