void testAtomicOps() {
volatile esint32 key = 0;
EAssert(AtomicIncrement(&key) == 1, "key != 1");
EAssert(AtomicDecrement(&key) == 0, "key != 0");
AtomicCompareExchange(1, 0, &key);
EAssert(AtomicIncrement(&key) == 2, "key != 2");
}
LargeMemoryBlock *ExtMemoryPool::mallocLargeObject(size_t allocationSize)
{
#if __TBB_MALLOC_LOCACHE_STAT
AtomicIncrement(mallocCalls);
AtomicAdd(memAllocKB, allocationSize/1024);
#endif
LargeMemoryBlock* lmb = loc.get(allocationSize);
if (!lmb) {
BackRefIdx backRefIdx = BackRefIdx::newBackRef(/*largeObj=*/true);
if (backRefIdx.isInvalid())
return NULL;
// unalignedSize is set in getLargeBlock
lmb = backend.getLargeBlock(allocationSize);
if (!lmb) {
removeBackRef(backRefIdx);
loc.rollbackCacheState(allocationSize);
return NULL;
}
lmb->backRefIdx = backRefIdx;
STAT_increment(getThreadId(), ThreadCommonCounters, allocNewLargeObj);
} else {
#if __TBB_MALLOC_LOCACHE_STAT
AtomicIncrement(cacheHits);
AtomicAdd(memHitKB, allocationSize/1024);
#endif
}
return lmb;
}
void AddonClass::Acquire() const
{
if (isDeleted)
CLog::Log(LOGERROR,"NEWADDON REFCNT Acquiring dead class %s 0x%lx",
GetClassname(), (long)(((void*)this)));
#ifdef LOG_LIFECYCLE_EVENTS
CLog::Log(LOGDEBUG,"NEWADDON REFCNT incrementing to %ld on %s 0x%lx",
AtomicIncrement((long*)&refs),GetClassname(), (long)(((void*)this)));
#else
AtomicIncrement((long*)&refs);
#endif
}
//-----------------------------------------------------------------------------
// LoadTextureXD
// Loads a texture
//-----------------------------------------------------------------------------
sint CRenderer::LoadTexture2D( const char* szFilename )
{
sint nIndex = AtomicIncrement( &m_nNumTextures ) - 1;
m_ppTextures[ nIndex ] = m_pDevice->LoadTexture( szFilename );
return nIndex;
}
//-----------------------------------------------------------------------------
// CreateMesh
// Creates a mesh from the file
//-----------------------------------------------------------------------------
sint CRenderer::CreateMesh( uint nVertexStride,
uint nVertexCount,
uint nIndexSize,
uint nIndexCount,
void* pVertices,
void* pIndices,
GFX_BUFFER_USAGE nUsage )
{
ASSERT( m_nNumMeshes < MAX_MESHES );
CMesh* pMesh = new CMesh;
//////////////////////////////////////////
// Create the vertex buffer
pMesh->m_pVertexBuffer = m_pDevice->CreateVertexBuffer( nVertexStride * nVertexCount, pVertices, nUsage );
//////////////////////////////////////////
// Create the index buffer
uint nSize = nIndexCount * nIndexSize;
pMesh->m_pIndexBuffer = m_pDevice->CreateIndexBuffer( nSize, pIndices );
pMesh->m_nIndexCount = nIndexCount;
pMesh->m_nIndexSize = nIndexSize;
pMesh->m_nVertexStride = nVertexStride;
pMesh->m_pDevice = m_pDevice; // Allow the mesh access to the device
//
sint nIndex = AtomicIncrement( &m_nNumMeshes ) - 1;
m_ppMeshes[ nIndex ] = pMesh;
return nIndex;
}
HRESULT CTestAtomicHelpers::Run()
{
HRESULT hr = S_OK;
int value = -2000;
int nextexpected = -2000;
int result = 0;
while (value < 2000)
{
nextexpected++;
result = AtomicIncrement(&value);
ChkIf(result != nextexpected, E_UNEXPECTED);
ChkIf(result != value, E_UNEXPECTED);
}
value = 2000;
nextexpected = 2000;
while (value > -2000)
{
nextexpected--;
result = AtomicDecrement(&value);
ChkIf(result != nextexpected, E_UNEXPECTED);
ChkIf(result != value, E_UNEXPECTED);
}
Cleanup:
return hr;
}
Instance Lock() {
ELock_lock(&m_interlock);
if (!m_tid) {
m_tid = pthread_self();
}
else {
if (m_tid != pthread_self()) {
/// 这里先解锁了
ELock_unlock(&m_interlock);
///
while (1) {
ELock_lock(&m_interlock);
if (!m_tid) {
/// break以后实际上是锁住的
m_tid = pthread_self();
break;
}
ELock_unlock(&m_interlock);
}
}
}
AtomicIncrement(&m_lock);
ELock_unlock(&m_interlock);
return Instance(this);
}
//-----------------------------------------------------------------------------
// DrawDebugRay
// Draws a vector from the start point the length of the vector
//-----------------------------------------------------------------------------
void CRenderer::DrawDebugRay( const RVector3& start, const RVector3& dir )
{
sint nIndex = AtomicIncrement( &m_nNumRays ) - 1;
m_pCurrDebugRays[nIndex].start = start;
m_pCurrDebugRays[nIndex].end = start + dir;
}
CDVDMediaCodecInfo* CDVDMediaCodecInfo::Retain()
{
AtomicIncrement(&m_refs);
m_isReleased = false;
return this;
}
bool LargeObjectCacheImpl<Props>::regularCleanup(Backend *backend, uintptr_t currTime, bool doThreshDecr)
{
bool released = false;
BinsSummary binsSummary;
for (int i = bitMask.getMaxTrue(numBins-1); i >= 0;
i = bitMask.getMaxTrue(i-1)) {
bin[i].updateBinsSummary(&binsSummary);
if (!doThreshDecr && tooLargeLOC>2 && binsSummary.isLOCTooLarge()) {
// if LOC is too large for quite long time, decrease the threshold
// based on bin hit statistics.
// For this, redo cleanup from the beginnig.
// Note: on this iteration total usedSz can be not too large
// in comparison to total cachedSz, as we calculated it only
// partially. We are ok this it.
i = bitMask.getMaxTrue(numBins-1);
doThreshDecr = true;
binsSummary.reset();
continue;
}
if (doThreshDecr)
bin[i].decreaseThreshold();
if (bin[i].cleanToThreshold(backend, &bitMask, currTime, i))
released = true;
}
// We want to find if LOC was too large for some time continuously,
// so OK with races between incrementing and zeroing, but incrementing
// must be atomic.
if (binsSummary.isLOCTooLarge())
AtomicIncrement(tooLargeLOC);
else
tooLargeLOC = 0;
return released;
}
int NaClAppThreadUnblockIfFaulted(struct NaClAppThread *natp, int *signal) {
DWORD previous_suspend_count;
if (natp->fault_signal == 0) {
return 0;
}
*signal = natp->fault_signal;
natp->fault_signal = 0;
AtomicIncrement(&natp->nap->faulted_thread_count, -1);
/*
* Decrement Windows' suspension count for the thread. This undoes
* the effect of debug_exception_handler.c's SuspendThread() call.
*/
previous_suspend_count = ResumeThread(GetHostThreadHandle(natp));
if (previous_suspend_count == (DWORD) -1) {
NaClLog(LOG_FATAL, "NaClAppThreadUnblockIfFaulted: "
"ResumeThread() call failed\n");
}
/*
* This thread should already have been suspended using
* NaClUntrustedThreadSuspend(), so the thread will not actually
* resume until NaClUntrustedThreadResume() is called.
*/
DCHECK(previous_suspend_count >= 2);
return 1;
}
HRESULT CStunMessageBuilder::AddRandomTransactionId(StunTransactionId* pTransId)
{
StunTransactionId transid;
uint32_t stun_cookie_nbo = htonl(STUN_COOKIE);
uint32_t entropy=0;
// on x86, the rdtsc instruction is about as good as it gets for a random sequence number
// on linux, there's /dev/urandom
#ifdef _WIN32
// on windows, there's lots of simple stuff we can get at to give us a random number
// the rdtsc instruction is about as good as it gets
uint64_t clock = __rdtsc();
entropy ^= (uint32_t)(clock);
#else
// on linux, /dev/urandom should be sufficient
{
int randomfile = ::open("/dev/urandom", O_RDONLY);
if (randomfile >= 0)
{
int readret = read(randomfile, &entropy, sizeof(entropy));
UNREFERENCED_VARIABLE(readret);
ASSERT(readret > 0);
close(randomfile);
}
}
if (entropy == 0)
{
entropy ^= getpid();
entropy ^= reinterpret_cast<uintptr_t>(this);
entropy ^= time(NULL);
entropy ^= AtomicIncrement(&g_sequence_number);
}
#endif
srand(entropy);
// the first four bytes of the transaction id is always the magic cookie
// followed by 12 bytes of the real transaction id
memcpy(transid.id, &stun_cookie_nbo, sizeof(stun_cookie_nbo));
for (int x = 4; x < (STUN_TRANSACTION_ID_LENGTH-4); x++)
{
transid.id[x] = (uint8_t)(rand() % 256);
}
if (pTransId)
{
*pTransId = transid;
}
return AddTransactionId(transid);
}
CMMALVideoBuffer* CMMALVideoBuffer::Acquire()
{
long count = AtomicIncrement(&m_refs);
if (g_advancedSettings.CanLogComponent(LOGVIDEO))
CLog::Log(LOGDEBUG, "%s::%s %p (%p) ref:%ld", CLASSNAME, __func__, this, mmal_buffer, count);
(void)count;
return this;
}
CYUVVideoBuffer *CYUVVideoBuffer::Acquire()
{
long count = AtomicIncrement(&m_refs);
#ifdef MMAL_DEBUG_VERBOSE
CLog::Log(LOGDEBUG, "%s::%s omvb:%p mmal:%p ref:%ld", CLASSNAME, __func__, this, mmal_buffer, count);
#endif
(void)count;
return this;
}
//-----------------------------------------------------------------------------
// AddCommand
// Adds a renderable object to the command buffer
//-----------------------------------------------------------------------------
void CRenderer::AddCommand( uint64 nCmd, RTransform& transform )
{
ASSERT( m_nNumCommands < MAX_RENDER_COMMANDS );
uint nIndex = AtomicIncrement( &m_nNumCommands ) - 1;
m_pCurrCommands[nIndex] = nCmd;
m_pCurrTransforms[nIndex] = transform;
}
void CRenderer::AddDirLight( const RVector3& vDir, const RVector3& vColor )
{
ASSERT( m_pCurrLights->nNumActiveLights < MAX_LIGHTS );
sint nIndex = AtomicIncrement( &m_pCurrLights->nNumActiveLights ) - 1;
m_pCurrLights->vLight[ nIndex ] = Homogonize( Normalize( -vDir ) );
m_pCurrLights->vColor[ nIndex ] = RVector4( vColor, 1.0f );
m_pCurrLights->nLightType &= ( 0 << nIndex);
}
//-----------------------------------------------------------------------------
// AddLight
// Adds a light to the scene
//-----------------------------------------------------------------------------
void CRenderer::AddPointLight( const RVector3& vPos, const RVector3& vColor, float fRange )
{
ASSERT( m_pCurrLights->nNumActiveLights < MAX_LIGHTS );
sint nIndex = AtomicIncrement( &m_pCurrLights->nNumActiveLights ) - 1;
m_pCurrLights->vLight[ nIndex ] = RVector4( vPos, fRange );
m_pCurrLights->vColor[ nIndex ] = RVector4( vColor, 1.0f );
m_pCurrLights->nLightType |= (1 << nIndex);
}
void ScanCacheInsert(
ScanCache* self,
const HashDigest& key,
uint64_t timestamp,
const char** included_files,
int count)
{
AtomicIncrement(&g_Stats.m_ScanCacheInserts);
ReadWriteLockWrite(&self->m_Lock);
ScanCache::Record* record = LookupDynamic(self, key);
// See if we have this record already (races to insert same include set are possible)
if (nullptr == record || record->m_FileTimestamp != timestamp)
{
// Make sure we have room to insert.
ScanCachePrepareInsert(self);
uint32_t table_size = self->m_TableSize;
#if ENABLED(USE_SHA1_HASH)
uint32_t hash = key.m_Words.m_C;
#elif ENABLED(USE_FAST_HASH)
uint32_t hash = key.m_Words32[0];
#endif
uint32_t index = hash &(table_size - 1);
// Allocate a new record if needed
const bool is_fresh = record == nullptr;
if (is_fresh)
{
record = LinearAllocate<ScanCache::Record>(self->m_Allocator);
record->m_Key = key;
}
record->m_FileTimestamp = timestamp;
record->m_IncludeCount = count;
record->m_Includes = LinearAllocateArray<FileAndHash>(self->m_Allocator, count);
for (int i = 0; i < count; ++i)
{
record->m_Includes[i].m_Filename = StrDup(self->m_Allocator, included_files[i]);
record->m_Includes[i].m_Hash = Djb2HashPath(included_files[i]);
}
if (is_fresh)
{
record->m_Next = self->m_Table[index];
self->m_Table[index] = record;
self->m_RecordCount++;
}
}
ReadWriteUnlockWrite(&self->m_Lock);
}
//-----------------------------------------------------------------------------
// DrawDebugBox
// Renders a wireframe debug AAB
//-----------------------------------------------------------------------------
void CRenderer::DrawDebugBox( const RAABB& box, const RVector3& vColor )
{
if( !gnShowBoundingVolumes )
return;
sint nIndex = AtomicIncrement( &m_nNumBoxes ) - 1;
m_pCurrDebugBoxes[nIndex].box = box;
m_pCurrDebugBoxes[nIndex].color = vColor;
}
CDVDVideoCodecIMXBuffer::CDVDVideoCodecIMXBuffer(int idx)
: m_refs(1)
, m_idx(idx)
#else
CDVDVideoCodecIMXBuffer::CDVDVideoCodecIMXBuffer()
: m_refs(1)
#endif
, m_frameBuffer(NULL)
, m_rendered(false)
, m_pts(DVD_NOPTS_VALUE)
, m_previousBuffer(NULL)
{
}
void CDVDVideoCodecIMXBuffer::Lock()
{
#ifdef TRACE_FRAMES
long count = AtomicIncrement(&m_refs);
CLog::Log(LOGDEBUG, "R+ %02d - ref : %d (VPU)\n", m_idx, count);
#else
AtomicIncrement(&m_refs);
#endif
}
int NaClAppThreadUnblockIfFaulted(struct NaClAppThread *natp, int *signal) {
/* This function may only be called on a thread that is suspended. */
DCHECK(natp->suspend_state == (NACL_APP_THREAD_UNTRUSTED |
NACL_APP_THREAD_SUSPENDING |
NACL_APP_THREAD_SUSPENDED) ||
natp->suspend_state == (NACL_APP_THREAD_TRUSTED |
NACL_APP_THREAD_SUSPENDING));
if (natp->fault_signal == 0) {
return 0;
}
*signal = natp->fault_signal;
natp->fault_signal = 0;
AtomicIncrement(&natp->nap->faulted_thread_count, -1);
return 1;
}
uintptr_t LargeObjectCache::cleanupCacheIfNeed(ExtMemoryPool *extMemPool)
{
/* loCacheStat.age overflow is OK, as we only want difference between
* its current value and some recent.
*
* Both malloc and free should increment loCacheStat.age, as in
* a different case multiple cached blocks would have same age,
* and accuracy of predictors suffers.
*/
uintptr_t currAge = (uintptr_t)AtomicIncrement((intptr_t&)loCacheStat.age);
if ( 0 == currAge % cacheCleanupFreq )
regularCleanup(extMemPool, currAge);
return currAge;
}
EventData* Event::Start(const EventDescription& description)
{
EventData* result = nullptr;
if (EventStorage* storage = Core::storage)
{
result = &storage->NextEvent();
result->description = &description;
result->Start();
if (description.isSampling)
{
AtomicIncrement(&storage->isSampling);
}
}
return result;
}
void WorkerThread::Idle()
{
// decrease the active worker count
AtomicDecrement(&Pool_->ActiveWorkers_);
// were we the last active worker?
if(AtomicRead(&Pool_->ActiveWorkers_) == 1)
// notify the pool that everyone is now idle
ConditionWakeAll(Pool_->AllWorkersIdle_);
// wait until we get woken up by the pool, immediately unlock our locked local mutex
MutexLock(TaskMutex_);
ConditionWait(Pool_->WakeupNotifiction_, TaskMutex_);
MutexUnlock(TaskMutex_);
// increase the number of active workers
AtomicIncrement(&Pool_->ActiveWorkers_);
}
int NaClAppThreadUnblockIfFaulted(struct NaClAppThread *natp, int *signal) {
kern_return_t result;
if (natp->fault_signal == 0) {
return 0;
}
*signal = natp->fault_signal;
natp->fault_signal = 0;
AtomicIncrement(&natp->nap->faulted_thread_count, -1);
/*
* Decrement the kernel's suspension count for the thread. This
* undoes the effect of mach_exception_handler.c's thread_suspend()
* call.
*/
result = thread_resume(GetHostThreadPort(natp));
if (result != KERN_SUCCESS) {
NaClLog(LOG_FATAL, "NaClAppThreadUnblockIfFaulted: "
"thread_resume() call failed: error %d\n", (int) result);
}
return 1;
}
static void HandleUntrustedFault(int signal,
struct NaClSignalContext *regs,
struct NaClAppThread *natp) {
/* Sanity check. */
if ((natp->suspend_state & NACL_APP_THREAD_UNTRUSTED) == 0) {
NaClSignalErrorMessage("HandleUntrustedFault: Unexpected suspend_state\n");
NaClAbort();
}
/* Notify the debug stub by marking this thread as faulted. */
natp->fault_signal = signal;
AtomicIncrement(&natp->nap->faulted_thread_count, 1);
/*
* We now expect the debug stub to suspend this thread via the
* thread suspension API. This will allow the debug stub to get the
* register state at the point the fault happened. The debug stub
* will be able to modify the register state before unblocking the
* thread using NaClAppThreadUnblockIfFaulted().
*/
do {
int new_signal;
sigset_t sigset;
sigemptyset(&sigset);
sigaddset(&sigset, NACL_THREAD_SUSPEND_SIGNAL);
if (sigwait(&sigset, &new_signal) != 0) {
NaClSignalErrorMessage("HandleUntrustedFault: sigwait() failed\n");
NaClAbort();
}
if (new_signal != NACL_THREAD_SUSPEND_SIGNAL) {
NaClSignalErrorMessage("HandleUntrustedFault: "
"sigwait() returned unexpected result\n");
NaClAbort();
}
HandleSuspendSignal(regs);
} while (natp->fault_signal != 0);
}
//! @brief Increment the reference count
void acquire( ) const
{
AtomicIncrement( &m_refCount );
}
inline static void IncThrows() {
AtomicIncrement(Throws_);
}
inline static void IncProceed() {
AtomicIncrement(Proceed_);
}
static inline T RandomizeSleepTime(T t) throw () {
static TAtomic counter = 0;
const T rndNum = IntHash((T)AtomicIncrement(counter));
return (t * (T)4 + (rndNum % t) * (T)2) / (T)5;
}
