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libcfa/src/concurrency/preemption.cfa
radf34b3 rbfcf6b9 354 354 } 355 355 356 //-----------------------------------------------------------------------------357 // Kernel Signal Debug358 void __cfaabi_check_preemption() {359 bool ready = __preemption_enabled();360 if(!ready) { abort("Preemption should be ready"); }361 362 __cfaasm_label(debug, before);363 364 sigset_t oldset;365 int ret;366 ret = pthread_sigmask(0, ( const sigset_t * ) 0p, &oldset); // workaround trac#208: cast should be unnecessary367 if(ret != 0) { abort("ERROR sigprocmask returned %d", ret); }368 369 ret = sigismember(&oldset, SIGUSR1);370 if(ret < 0) { abort("ERROR sigismember returned %d", ret); }371 if(ret == 1) { abort("ERROR SIGUSR1 is disabled"); }372 373 ret = sigismember(&oldset, SIGALRM);374 if(ret < 0) { abort("ERROR sigismember returned %d", ret); }375 if(ret == 0) { abort("ERROR SIGALRM is enabled"); }376 377 ret = sigismember(&oldset, SIGTERM);378 if(ret < 0) { abort("ERROR sigismember returned %d", ret); }379 if(ret == 1) { abort("ERROR SIGTERM is disabled"); }380 381 __cfaasm_label(debug, after);382 }383 384 #ifdef __CFA_WITH_VERIFY__385 bool __cfaabi_dbg_in_kernel() {386 return !__preemption_enabled();387 }388 #endif389 390 356 #undef __cfaasm_label 391 392 //-----------------------------------------------------------------------------393 // Signal handling394 357 395 358 // sigprocmask wrapper : unblock a single signal … … 516 479 __cfaasm_label( check ); 517 480 __cfaasm_label( dsable ); 518 __cfaasm_label( debug );519 481 520 482 // Check if preemption is safe … … 523 485 if( __cfaasm_in( ip, check ) ) { ready = false; goto EXIT; }; 524 486 if( __cfaasm_in( ip, dsable ) ) { ready = false; goto EXIT; }; 525 if( __cfaasm_in( ip, debug ) ) { ready = false; goto EXIT; };526 487 if( !__cfaabi_tls.preemption_state.enabled) { ready = false; goto EXIT; }; 527 488 if( __cfaabi_tls.preemption_state.in_progress ) { ready = false; goto EXIT; }; … … 575 536 // Wait for the preemption thread to finish 576 537 577 pthread_join( alarm_thread, 0p ); 578 free( alarm_stack ); 538 __destroy_pthread( alarm_thread, alarm_stack, 0p ); 579 539 580 540 // Preemption is now fully stopped … … 736 696 } 737 697 698 //============================================================================================= 699 // Kernel Signal Debug 700 //============================================================================================= 701 702 void __cfaabi_check_preemption() { 703 bool ready = __preemption_enabled(); 704 if(!ready) { abort("Preemption should be ready"); } 705 706 sigset_t oldset; 707 int ret; 708 ret = pthread_sigmask(0, ( const sigset_t * ) 0p, &oldset); // workaround trac#208: cast should be unnecessary 709 if(ret != 0) { abort("ERROR sigprocmask returned %d", ret); } 710 711 ret = sigismember(&oldset, SIGUSR1); 712 if(ret < 0) { abort("ERROR sigismember returned %d", ret); } 713 if(ret == 1) { abort("ERROR SIGUSR1 is disabled"); } 714 715 ret = sigismember(&oldset, SIGALRM); 716 if(ret < 0) { abort("ERROR sigismember returned %d", ret); } 717 if(ret == 0) { abort("ERROR SIGALRM is enabled"); } 718 719 ret = sigismember(&oldset, SIGTERM); 720 if(ret < 0) { abort("ERROR sigismember returned %d", ret); } 721 if(ret == 1) { abort("ERROR SIGTERM is disabled"); } 722 } 723 724 #ifdef __CFA_WITH_VERIFY__ 725 bool __cfaabi_dbg_in_kernel() { 726 return !__preemption_enabled(); 727 } 728 #endif 729 738 730 // Local Variables: // 739 731 // mode: c //
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