diff options
Diffstat (limited to 'src/cpu/o3/cpu.hh')
| -rw-r--r-- | src/cpu/o3/cpu.hh | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/cpu/o3/cpu.hh b/src/cpu/o3/cpu.hh index aabac5fea..ec6be657a 100644 --- a/src/cpu/o3/cpu.hh +++ b/src/cpu/o3/cpu.hh @@ -205,6 +205,9 @@ class FullO3CPU : public BaseO3CPU /** The tick event used for scheduling CPU ticks. */ EventFunctionWrapper tickEvent; + /** The exit event used for terminating all ready-to-exit threads */ + EventFunctionWrapper threadExitEvent; + /** Schedule tick event, regardless of its current state. */ void scheduleTickEvent(Cycles delay) { @@ -331,6 +334,21 @@ class FullO3CPU : public BaseO3CPU void serializeThread(CheckpointOut &cp, ThreadID tid) const override; void unserializeThread(CheckpointIn &cp, ThreadID tid) override; + /** Insert tid to the list of threads trying to exit */ + void addThreadToExitingList(ThreadID tid); + + /** Is the thread trying to exit? */ + bool isThreadExiting(ThreadID tid) const; + + /** + * If a thread is trying to exit and its corresponding trap event + * has been completed, schedule an event to terminate the thread. + */ + void scheduleThreadExitEvent(ThreadID tid); + + /** Terminate all threads that are ready to exit */ + void exitThreads(); + public: /** Executes a syscall. * @todo: Determine if this needs to be virtual. @@ -648,6 +666,13 @@ class FullO3CPU : public BaseO3CPU /** Active Threads List */ std::list<ThreadID> activeThreads; + /** + * This is a list of threads that are trying to exit. Each thread id + * is mapped to a boolean value denoting whether the thread is ready + * to exit. + */ + std::unordered_map<ThreadID, bool> exitingThreads; + /** Integer Register Scoreboard */ Scoreboard scoreboard; |