X-Git-Url: http://g0dil.de/git?a=blobdiff_plain;f=senf%2FScheduler%2FFIFORunner.cc;h=94009c32e9de87e06f90bfa1ae9c780e3323ba04;hb=fe5837b37f112fdcd379e96ce248ca5b5f8b4d98;hp=9908e91d176fefa2365f17ccaaf0f246e74f855d;hpb=b9bc7df8121501f84f5a48e854ebaa4984a44932;p=senf.git diff --git a/senf/Scheduler/FIFORunner.cc b/senf/Scheduler/FIFORunner.cc index 9908e91..94009c3 100644 --- a/senf/Scheduler/FIFORunner.cc +++ b/senf/Scheduler/FIFORunner.cc @@ -29,12 +29,11 @@ // Custom includes #include #include -#include +#include #include #include -#include #ifdef SENF_DEBUG - #include + #include #endif #include #include @@ -114,7 +113,7 @@ prefix_ void senf::scheduler::detail::FIFORunner::stopWatchdog() // At the moment, the FIFORunner is not very efficient with many non-runnable tasks since the // complete list of tasks is traversed on each run(). // -// To optimize this, we woould need a way to find the relative ordering of two tasks in O(1) (at the +// To optimize this, we would need a way to find the relative ordering of two tasks in O(1) (at the // moment, this is an O(N) operation by traversing the list). // // One idea is, to give each task an 'order' value. Whenever a task is added at the end, it's order @@ -192,31 +191,37 @@ prefix_ void senf::scheduler::detail::FIFORunner::run(TaskList::iterator f, Task TaskList::iterator end (TaskList::current(null)); next_ = f; - using namespace boost::lambda; - ScopeExit atExit (( - var(watchdogCount_) = 0, - var(next_) = l - )); - - while (next_ != end) { - TaskInfo & task (*next_); - if (task.runnable_) { - task.runnable_ = false; - runningName_ = task.name(); -# ifdef SENF_DEBUG - runningBacktrace_ = task.backtrace_; -# endif - TaskList::iterator i (next_); - ++ next_; - tasks_.splice(l, tasks_, i); - watchdogCount_ = 1; - yield_ = false; - task.run(); - if (yield_) - return; + // Would prefer to use ScopeExit+boost::lambda here instead of try but profiling has shown that + // to be to costly here + + try { + while (next_ != end) { + TaskInfo & task (*next_); + if (task.runnable_) { + task.runnable_ = false; + runningName_ = task.name(); + # ifdef SENF_DEBUG + runningBacktrace_ = task.backtrace_; + # endif + TaskList::iterator i (next_); + ++ next_; + tasks_.splice(l, tasks_, i); + watchdogCount_ = 1; + yield_ = false; + task.run(); + if (yield_) + return; + } + else + ++ next_; } - else - ++ next_; + watchdogCount_ = 0; + next_ = l; + } + catch (...) { + watchdogCount_ = 0; + next_ = l; + throw; } } @@ -224,11 +229,11 @@ prefix_ senf::scheduler::detail::FIFORunner::TaskList::iterator senf::scheduler::detail::FIFORunner::priorityEnd(TaskInfo::Priority p) { switch (p) { - case senf::scheduler::detail::FIFORunner::TaskInfo::PRIORITY_LOW : + case TaskInfo::PRIORITY_LOW : return tasks_.end(); - case senf::scheduler::detail::FIFORunner::TaskInfo::PRIORITY_NORMAL : + case TaskInfo::PRIORITY_NORMAL : return TaskList::current(normalPriorityEnd_); - case senf::scheduler::detail::FIFORunner::TaskInfo::PRIORITY_HIGH : + case TaskInfo::PRIORITY_HIGH : return TaskList::current(highPriorityEnd_); } return tasks_.begin();