Changeset cd17862 for src/libcfa/concurrency/kernel.c

Timestamp:

Jul 4, 2017, 4:48:46 PM (7 years ago)

Author:

Thierry Delisle <tdelisle@…>

Branches:

ADT, aaron-thesis, arm-eh, ast-experimental, cleanup-dtors, deferred_resn, demangler, enum, forall-pointer-decay, jacob/cs343-translation, jenkins-sandbox, master, new-ast, new-ast-unique-expr, new-env, no_list, persistent-indexer, pthread-emulation, qualifiedEnum, resolv-new, with_gc

Children:

11dbfe1

Parents:

47ecf2b

Message:

Preemption now uses an oracle kernel thread

File:

• src/libcfa/concurrency/kernel.c (modified) (1 diff)

src/libcfa/concurrency/kernel.c

@@ -324 +324 @@
         LIB_DEBUG_PRINT_SAFE("Kernel : Starting core %p\n", this);
 
-        // SIGALRM must only be caught by the system processor
-        sigset_t old_mask;
-        bool is_system_proc = this_processor == &systemProcessor->proc;
-        if ( is_system_proc ) {
-                // Child kernel-thread inherits the signal mask from the parent kernel-thread. So one special case for the
-                // system processor creating the user processor => toggle the blocking SIGALRM on system processor, create user
-                // processor, and toggle back (below) previous signal mask of the system processor.
-
-                sigset_t new_mask;
-                sigemptyset( &new_mask );
-                sigemptyset( &old_mask );
-                sigaddset( &new_mask, SIGALRM );
-
-                if ( pthread_sigmask( SIG_BLOCK, &new_mask, &old_mask ) == -1 ) {
-                        abortf( "internal error, pthread_sigmask" );
-                }
-
-                assert( ! sigismember( &old_mask, SIGALRM ) );
-        }
-
         pthread_create( &this->kernel_thread, NULL, CtxInvokeProcessor, (void*)this );
-
-        // Toggle back previous signal mask of system processor.
-        if ( is_system_proc ) {
-                if ( pthread_sigmask( SIG_SETMASK, &old_mask, NULL ) == -1 ) {
-                        abortf( "internal error, pthread_sigmask" );
-                } // if
-        } // if
 
         LIB_DEBUG_PRINT_SAFE("Kernel : core %p started\n", this);