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| 1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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| 94 thread_local_.c_entry_fp_ = 0; | 94 thread_local_.c_entry_fp_ = 0; |
| 95 thread_local_.handler_ = 0; | 95 thread_local_.handler_ = 0; |
| 96 thread_local_.stack_is_cooked_ = false; | 96 thread_local_.stack_is_cooked_ = false; |
| 97 thread_local_.try_catch_handler_ = NULL; | 97 thread_local_.try_catch_handler_ = NULL; |
| 98 thread_local_.context_ = NULL; | 98 thread_local_.context_ = NULL; |
| 99 thread_local_.external_caught_exception_ = false; | 99 thread_local_.external_caught_exception_ = false; |
| 100 thread_local_.failed_access_check_callback_ = NULL; | 100 thread_local_.failed_access_check_callback_ = NULL; |
| 101 clear_pending_exception(); | 101 clear_pending_exception(); |
| 102 clear_scheduled_exception(); | 102 clear_scheduled_exception(); |
| 103 thread_local_.save_context_ = NULL; | 103 thread_local_.save_context_ = NULL; |
| 104 thread_local_.catcher_ = NULL; | 104 thread_local_.pending_external_caught_exception_ = false; |
| 105 } | 105 } |
| 106 | 106 |
| 107 | 107 |
| 108 // Create a dummy thread that will wait forever on a semaphore. The only | 108 // Create a dummy thread that will wait forever on a semaphore. The only |
| 109 // purpose for this thread is to have some stack area to save essential data | 109 // purpose for this thread is to have some stack area to save essential data |
| 110 // into for use by a stacks only core dump (aka minidump). | 110 // into for use by a stacks only core dump (aka minidump). |
| 111 class PreallocatedMemoryThread: public Thread { | 111 class PreallocatedMemoryThread: public Thread { |
| 112 public: | 112 public: |
| 113 PreallocatedMemoryThread() : keep_running_(true) { | 113 PreallocatedMemoryThread() : keep_running_(true) { |
| 114 wait_for_ever_semaphore_ = OS::CreateSemaphore(0); | 114 wait_for_ever_semaphore_ = OS::CreateSemaphore(0); |
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| 600 } | 600 } |
| 601 | 601 |
| 602 | 602 |
| 603 Failure* Top::Throw(Object* exception, MessageLocation* location) { | 603 Failure* Top::Throw(Object* exception, MessageLocation* location) { |
| 604 DoThrow(exception, location, NULL); | 604 DoThrow(exception, location, NULL); |
| 605 return Failure::Exception(); | 605 return Failure::Exception(); |
| 606 } | 606 } |
| 607 | 607 |
| 608 | 608 |
| 609 Failure* Top::ReThrow(Object* exception, MessageLocation* location) { | 609 Failure* Top::ReThrow(Object* exception, MessageLocation* location) { |
| 610 // Set the exception beeing re-thrown. | 610 // Set the exception being re-thrown. |
| 611 set_pending_exception(exception); | 611 set_pending_exception(exception); |
| 612 return Failure::Exception(); | 612 return Failure::Exception(); |
| 613 } | 613 } |
| 614 | 614 |
| 615 | 615 |
| 616 void Top::ScheduleThrow(Object* exception) { | 616 void Top::ScheduleThrow(Object* exception) { |
| 617 // When scheduling a throw we first throw the exception to get the | 617 // When scheduling a throw we first throw the exception to get the |
| 618 // error reporting if it is uncaught before rescheduling it. | 618 // error reporting if it is uncaught before rescheduling it. |
| 619 Throw(exception); | 619 Throw(exception); |
| 620 thread_local_.scheduled_exception_ = pending_exception(); | 620 thread_local_.scheduled_exception_ = pending_exception(); |
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| 782 } | 782 } |
| 783 Handle<String> stack_trace; | 783 Handle<String> stack_trace; |
| 784 if (FLAG_trace_exception) stack_trace = StackTrace(); | 784 if (FLAG_trace_exception) stack_trace = StackTrace(); |
| 785 message_obj = MessageHandler::MakeMessageObject("uncaught_exception", | 785 message_obj = MessageHandler::MakeMessageObject("uncaught_exception", |
| 786 location, HandleVector<Object>(&exception_handle, 1), stack_trace); | 786 location, HandleVector<Object>(&exception_handle, 1), stack_trace); |
| 787 } | 787 } |
| 788 | 788 |
| 789 // If the exception is caught externally, we store it in the | 789 // If the exception is caught externally, we store it in the |
| 790 // try/catch handler. The C code can find it later and process it if | 790 // try/catch handler. The C code can find it later and process it if |
| 791 // necessary. | 791 // necessary. |
| 792 thread_local_.catcher_ = NULL; | 792 thread_local_.pending_external_caught_exception_ = is_caught_externally; |
| 793 if (is_caught_externally) { | 793 if (is_caught_externally) { |
| 794 thread_local_.catcher_ = thread_local_.try_catch_handler_; | |
| 795 thread_local_.try_catch_handler_->exception_ = | 794 thread_local_.try_catch_handler_->exception_ = |
| 796 reinterpret_cast<void*>(*exception_handle); | 795 reinterpret_cast<void*>(*exception_handle); |
| 797 if (!message_obj.is_null()) { | 796 if (!message_obj.is_null()) { |
| 798 thread_local_.try_catch_handler_->message_ = | 797 thread_local_.try_catch_handler_->message_ = |
| 799 reinterpret_cast<void*>(*message_obj); | 798 reinterpret_cast<void*>(*message_obj); |
| 800 } | 799 } |
| 801 } | 800 } |
| 802 | 801 |
| 803 // Notify debugger of exception. | 802 // Notify debugger of exception. |
| 804 Debugger::OnException(exception_handle, report_exception); | 803 Debugger::OnException(exception_handle, report_exception); |
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| 893 Top::break_access_->Lock(); | 892 Top::break_access_->Lock(); |
| 894 } | 893 } |
| 895 | 894 |
| 896 | 895 |
| 897 ExecutionAccess::~ExecutionAccess() { | 896 ExecutionAccess::~ExecutionAccess() { |
| 898 Top::break_access_->Unlock(); | 897 Top::break_access_->Unlock(); |
| 899 } | 898 } |
| 900 | 899 |
| 901 | 900 |
| 902 } } // namespace v8::internal | 901 } } // namespace v8::internal |
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