diff options
| -rw-r--r-- | src/python/m5/simulate.py | 4 | ||||
| -rw-r--r-- | src/sim/drain.hh | 14 |
2 files changed, 18 insertions, 0 deletions
diff --git a/src/python/m5/simulate.py b/src/python/m5/simulate.py index 66344bc79..d89629d2d 100644 --- a/src/python/m5/simulate.py +++ b/src/python/m5/simulate.py @@ -308,4 +308,8 @@ def switchCpus(system, cpuList, verbose=True): for old_cpu, new_cpu in cpuList: new_cpu.takeOverFrom(old_cpu) +def notifyFork(root): + for obj in root.descendants(): + obj.notifyFork() + from internal.core import disableAllListeners diff --git a/src/sim/drain.hh b/src/sim/drain.hh index 31dbc97af..370217bd6 100644 --- a/src/sim/drain.hh +++ b/src/sim/drain.hh @@ -275,6 +275,20 @@ class Drainable /** Return the current drain state of an object. */ DrainState drainState() const { return _drainState; } + /** + * Notify a child process of a fork. + * + * When calling fork in gem5, we need to ensure that resources + * shared between the parent and the child are consistent. This + * method is intended to be overloaded to handle that. For + * example, an object could use this method to re-open input files + * to get a separate file description with a private file offset. + * + * This method is only called in the child of the fork. The call + * takes place in a drained system. + */ + virtual void notifyFork() {}; + private: /** DrainManager interface to request a drain operation */ DrainState dmDrain(); |