def start(taskletCls, newname='Tasklet', newgroup=None, newuser=None, result1=None, *args, **kwargs):
# Temporarily disable TCB, so that calling tasklet's context
# is not used for misled API calls
# essentially bug-prevention
prev_tcb = S.loc.tcb
S.loc.tcb = None
task = taskletCls(*args, **kwargs)
S.loc.tcb = prev_tcb
current_tcb = prev_tcb
if (newuser != None) and (current_tcb.user != 'SYSTEMYA'):
raise Tasklet.AccessDenied('Cannot set user, not SYSTEMYA')
newuser = newuser or current_tcb.user
if (newgroup != None) and (current_tcb.group != 'admin'):
raise Tasklet.AccessDenied('Cannot set group, not admin')
newgroup = newgroup or current_tcb.group
tid = S.getNextTID()
tcb = TaskletControlBlock(tid, newuser, newgroup, newname)
if isinstance(task, GCTasklet):
tcb.is_gc_on = True
S.registerNewTasklet(tcb, task)
S.schedule(tcb, task.on_startup)
if result1 != None:
S.schedule(current_tcb, result1, Tasklet(tid, newuser, newgroup, newname))
def start(taskletCls,
newname='Tasklet',
newgroup=None,
newuser=None,
result1=None,
*args,
**kwargs):
# Temporarily disable TCB, so that calling tasklet's context
# is not used for misled API calls
# essentially bug-prevention
prev_tcb = S.loc.tcb
S.loc.tcb = None
task = taskletCls(*args, **kwargs)
S.loc.tcb = prev_tcb
current_tcb = prev_tcb
if (newuser != None) and (current_tcb.user != 'SYSTEMYA'):
raise Tasklet.AccessDenied('Cannot set user, not SYSTEMYA')
newuser = newuser or current_tcb.user
if (newgroup != None) and (current_tcb.group != 'admin'):
raise Tasklet.AccessDenied('Cannot set group, not admin')
newgroup = newgroup or current_tcb.group
tid = S.getNextTID()
tcb = TaskletControlBlock(tid, newuser, newgroup, newname)
if isinstance(task, GCTasklet):
tcb.is_gc_on = True
S.registerNewTasklet(tcb, task)
S.schedule(tcb, task.on_startup)
if result1 != None:
S.schedule(current_tcb, result1,
Tasklet(tid, newuser, newgroup, newname))
print ("INIT: Init v1.0 (part of System y) started")
for elem in self.initlist:
if len(elem) == 4: user, group, name, cls = elem; args = (); kwargs = {}
if len(elem) == 5: user, group, name, cls, args = elem; kwargs = {}
if len(elem) == 6: user, group, name, cls, args, kwargs = elem
if isinstance(cls, str):
# attempt an import
try:
mod = importlib.import_module('.'.join(cls.split('.')[:-1]))
cls = getattr(mod, cls.split('.')[-1])
except (ImportError, AttributeError):
print("INIT: Failed to import", cls)
continue
Tasklet.start(cls, name, group, user, None, *args, **kwargs)
print("INIT:", len(self.initlist), "tasklets spawned, exiting")
if __name__ == '__main__':
S.startup()
S.tidIssuer.adjustID(0) # 0th Page on 0th Frame
# manual bootstrap here
init = InitTasklet(initrd)
tcb = TaskletControlBlock(0, 'SYSTEMYA', 'admin', 'init')
S.registerNewTasklet(tcb, init)
S.schedule(tcb, init.on_startup)
kwargs = {}
if len(elem) == 5:
user, group, name, cls, args = elem
kwargs = {}
if len(elem) == 6: user, group, name, cls, args, kwargs = elem
if isinstance(cls, str):
# attempt an import
try:
mod = importlib.import_module('.'.join(
cls.split('.')[:-1]))
cls = getattr(mod, cls.split('.')[-1])
except (ImportError, AttributeError):
print("INIT: Failed to import", cls)
continue
Tasklet.start(cls, name, group, user, None, *args, **kwargs)
print("INIT:", len(self.initlist), "tasklets spawned, exiting")
if __name__ == '__main__':
S.startup()
S.tidIssuer.adjustID(0) # 0th Page on 0th Frame
# manual bootstrap here
init = InitTasklet(initrd)
tcb = TaskletControlBlock(0, 'SYSTEMYA', 'admin', 'init')
S.registerNewTasklet(tcb, init)
S.schedule(tcb, init.on_startup)
