Implemented global cross-reference generation

[senf.git] / Scheduler / Scheduler.cc

diff --git a/Scheduler/Scheduler.cc b/Scheduler/Scheduler.cc
index 5e8a860..01e33c8 100644 (file)
--- a/Scheduler/Scheduler.cc
+++ b/Scheduler/Scheduler.cc
@@ -20,7 +20,19 @@
 // Free Software Foundation, Inc.,
 // 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
-// TODO: Implement signal handling
+/** \file
+
+    \idea Implement signal handling (See source for more discussion
+    about this) 
+
+    \idea Multithreading support: To support multithreading, the
+    static member Scheduler::instance() must return a thread-local
+    value (that is Scheduler::instance() must allocate one Scheduler
+    instance per thread)
+
+    \fixme Test2
+ */
+
 // Here a basic concept of how to add signal support to the scheduler:
 //
 // Every signal to be reported by the scheduler will be asigned a
@@ -57,11 +69,6 @@
 // scheduler must be blocked as soon as it is registered with the
 // scheduler.
 
-// TODO: Multithreading support
-// To support multithreading, the static member Scheduler::instance()
-// must return a thread-local value (that is Scheduler::instance()
-// must allocate one Scheduler instance per thread)
-
 // Definition of non-inline non-template functions
 
 #include "Scheduler.hh"
@@ -71,26 +78,32 @@
 #include <errno.h>
 #include <sys/epoll.h>
 #include "Utils/Exception.hh"
+#include "Utils/MicroTime.hh"
 
 static const int EPollInitialSize = 16;
 
 #define prefix_
 ///////////////////////////////cc.p////////////////////////////////////////
 
-prefix_ satcom::lib::Scheduler::Scheduler & satcom::lib::Scheduler::instance()
+prefix_ senf::Scheduler::Scheduler & senf::Scheduler::instance()
 {
     static Scheduler instance;
     return instance;
 }
 
-prefix_ satcom::lib::Scheduler::Scheduler()
+prefix_ void senf::Scheduler::timeout(unsigned long timeout, TimerCallback const & cb)
+{
+    timerQueue_.push(TimerSpec(now()+1000*timeout,cb));
+}
+
+prefix_ senf::Scheduler::Scheduler()
     : epollFd_(epoll_create(EPollInitialSize))
 {
     if (epollFd_<0)
         throw SystemException(errno);
 }
 
-prefix_ void satcom::lib::Scheduler::do_add(int fd, InternalCallback const & cb, EventId eventMask)
+prefix_ void senf::Scheduler::do_add(int fd, SimpleCallback const & cb, int eventMask)
 {
     FdTable::iterator i (fdTable_.find(fd));
     int action (EPOLL_CTL_MOD);
@@ -114,7 +127,7 @@ prefix_ void satcom::lib::Scheduler::do_add(int fd, InternalCallback const & cb,
         throw SystemException(errno);
 }
 
-prefix_ void satcom::lib::Scheduler::do_remove(int fd, EventId eventMask)
+prefix_ void senf::Scheduler::do_remove(int fd, int eventMask)
 {
     FdTable::iterator i (fdTable_.find(fd));
     if (i == fdTable_.end()) 
@@ -130,7 +143,7 @@ prefix_ void satcom::lib::Scheduler::do_remove(int fd, EventId eventMask)
     memset(&ev,0,sizeof(ev));
     ev.events = i->second.epollMask();
     ev.data.fd = fd;
-
+    
     int action (EPOLL_CTL_MOD);
     if (ev.events==0) {
         action = EPOLL_CTL_DEL;
@@ -141,7 +154,8 @@ prefix_ void satcom::lib::Scheduler::do_remove(int fd, EventId eventMask)
         throw SystemException(errno);
 }
 
-prefix_ int satcom::lib::Scheduler::EventSpec::epollMask()
+
+prefix_ int senf::Scheduler::EventSpec::epollMask()
     const
 {
     int mask (0);
@@ -153,16 +167,27 @@ prefix_ int satcom::lib::Scheduler::EventSpec::epollMask()
     return mask;
 }
 
-prefix_ void satcom::lib::Scheduler::process()
+prefix_ void senf::Scheduler::process()
 {
     terminate_ = false;
     while (! terminate_) {
+
+       MicroTime timeNow = now();
+       while ( ! timerQueue_.empty() && timerQueue_.top().timeout <= timeNow ) {
+           timerQueue_.top().cb();
+           timerQueue_.pop();
+       }
+       if (terminate_) 
+           return;
+       int timeout = timerQueue_.empty() ? -1 : int((timerQueue_.top().timeout - timeNow)/1000);
+           
         struct epoll_event ev;
-        int events = epoll_wait(epollFd_, &ev, 1, 1000);
+        int events = epoll_wait(epollFd_, &ev, 1, timeout);
         if (events<0)
             // Hmm ... man epoll says, it will NOT return with EINTR ??
             throw SystemException(errno);
         if (events==0)
+           // Timeout .. it will be run when reachiung the top of the loop
             continue;
         
         FdTable::iterator i = fdTable_.find(ev.data.fd);
@@ -183,13 +208,22 @@ prefix_ void satcom::lib::Scheduler::process()
         }
 
         else if (ev.events & EPOLLHUP) {
-            BOOST_ASSERT(spec.cb_hup);
-            spec.cb_hup(EV_HUP);
+           if (spec.cb_hup)
+               spec.cb_hup(EV_HUP);
+           else if (ev.events & EPOLLERR) {
+               if (spec.cb_write) spec.cb_write(EV_HUP);
+               if (spec.cb_read) spec.cb_read(EV_HUP);
+           }
         }
-        else if (ev.events & EPOLLERR) {
-            BOOST_ASSERT(spec.cb_err);
-            spec.cb_err(EV_ERR);
+        else if (ev.events & EPOLLERR && ! ev.events & EPOLLHUP) {
+           if (spec.cb_err)
+               spec.cb_err(EV_ERR);
+           else {
+               if (spec.cb_write) spec.cb_write(EV_ERR);
+               if (spec.cb_read) spec.cb_read(EV_ERR);
+           }
         }
+
     }
 }
 
@@ -199,5 +233,5 @@ prefix_ void satcom::lib::Scheduler::process()
 \f
 // Local Variables:
 // mode: c++
-// c-file-style: "satcom"
+// c-file-style: "senf"
 // End: