Using a condition variable lets the consumer find that when the queue is empty it can just wait on the condition variable indicating that the queue has had something put into it. No polling - that thread does nothing until a producer puts something in the queue, then signals the condition t...
stdcondition_variable astdmutex breadyidstd::unique_lock<std::mutex>lock(b);a.wait(lock,[]{returnready;});std::cout<<id<<" is proceeding.\n";}intmain(){std::threadx1(x,1);std::threadx2(x,2);std::this_thread::sleep_for(std::chrono::seconds(1));{std::lock_guard<std::mute...
assert(isLockedByThisThread()); }// internal usagevoidlock()ACQUIRE(){ MCHECK(pthread_mutex_lock(&mutex_));//上锁,并检查assignHolder();//并注册当前线程的tid}voidunlock()RELEASE(){ unassignHolder();//清除已经注册的此线程的tidMCHECK(pthread_mutex_unlock(&mutex_));//释放锁}pthread_mutex_...
Usage notes The _OPEN_SYS_MUTEX_EXT feature switch can be optionally included. If the feature is set, then significantly larger pthread_cond_t objects will be defined. The feature is used for the management of mutex and condition variables in shared memory. If the feature switch is set in ...
CounterVariable Coverage2 CoverageDetailedSummaryStatus CoverageQueryFlags CoverageStatistics CoverageStatus CoverageSummaryStatus CreateBoard CreatePipelineConfigurationParameters CreatePipelineParameters CreatePlan CreateProcessModel CreateProcessRuleRequest CreateProcessWorkItemTypeRequest CreateProfileContext CreateScopeInfo ...
MatchVariable MatchedRule MetricSpecification NatGatewaySku NatGatewaySkuName Network Network.Definition Network.DefinitionStages Network.DefinitionStages.Blank Network.DefinitionStages.WithCreate Network.DefinitionStages.WithCreateAndSubnet Network.DefinitionStages.WithDdosProtectionPlan Network.DefinitionStages.WithGroup...
Usage notes If the condition variable is shared (PTHREAD_PROCESS_SHARED), the mutex must also be shared, with the _OPEN_SYS_MUTEX_EXT feature defined when the mutex was created and initialized. If the condition variable is private (PTHREAD_PROCESS_PRIVATE), the mutex must also be private. ...
Except in the case of [ETIMEDOUT], all these error checks shall act as if they were performed immediately at the beginning of processing for the function and shall cause an error return, in effect, prior to modifying the state of the mutex specified bymutexor the condition variable specified...
l_usage TYPE kvewe, l_cond_tab TYPE kotabnr, l_appl TYPE kappl, l_cond_type TYPE kscha, l_cond_tab_name TYPE t681-kotab, v_sel_tab_name type string. * Fetch Condition Header data swc_get_property self 'Application' l_appl. ...
Formula Usage =Filter(array or table,Condition,Alternate result) I specified 2 conditions in the excel function above. Condition 1 = If STATUS is ANI Condition 2 = if USER ID appear ONCE(1) I used*symbol forANDto apply both conditions. I would have use + for OR. ...