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Issue 11568014: Revert r13218 due to windows test failures. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 8 years ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 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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3472 * Returns true if JavaScript execution is currently terminating 3472 * Returns true if JavaScript execution is currently terminating
3473 * because of a call to TerminateExecution. In that case there are 3473 * because of a call to TerminateExecution. In that case there are
3474 * still JavaScript frames on the stack and the termination 3474 * still JavaScript frames on the stack and the termination
3475 * exception is still active. 3475 * exception is still active.
3476 * 3476 *
3477 * \param isolate The isolate in which to check. 3477 * \param isolate The isolate in which to check.
3478 */ 3478 */
3479 static bool IsExecutionTerminating(Isolate* isolate = NULL); 3479 static bool IsExecutionTerminating(Isolate* isolate = NULL);
3480 3480
3481 /** 3481 /**
3482 * Resume execution capability in the given isolate, whose execution
3483 * was previously forcefully terminated using TerminateExecution().
3484 *
3485 * When execution is forcefully terminated using TerminateExecution(),
3486 * the isolate can not resume execution until all JavaScript frames
3487 * have propagated the uncatchable exception which is generated. This
3488 * method allows the program embedding the engine to handle the
3489 * termination event and resume execution capability, even if
3490 * JavaScript frames remain on the stack.
3491 *
3492 * This method can be used by any thread even if that thread has not
3493 * acquired the V8 lock with a Locker object.
3494 *
3495 * \param isolate The isolate in which to resume execution capability.
3496 */
3497 static void ResumeExecution(Isolate* isolate);
3498
3499 /**
3500 * Releases any resources used by v8 and stops any utility threads 3482 * Releases any resources used by v8 and stops any utility threads
3501 * that may be running. Note that disposing v8 is permanent, it 3483 * that may be running. Note that disposing v8 is permanent, it
3502 * cannot be reinitialized. 3484 * cannot be reinitialized.
3503 * 3485 *
3504 * It should generally not be necessary to dispose v8 before exiting 3486 * It should generally not be necessary to dispose v8 before exiting
3505 * a process, this should happen automatically. It is only necessary 3487 * a process, this should happen automatically. It is only necessary
3506 * to use if the process needs the resources taken up by v8. 3488 * to use if the process needs the resources taken up by v8.
3507 */ 3489 */
3508 static bool Dispose(); 3490 static bool Dispose();
3509 3491
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3611 3593
3612 /** 3594 /**
3613 * Returns true if an exception has been caught by this try/catch block. 3595 * Returns true if an exception has been caught by this try/catch block.
3614 */ 3596 */
3615 bool HasCaught() const; 3597 bool HasCaught() const;
3616 3598
3617 /** 3599 /**
3618 * For certain types of exceptions, it makes no sense to continue 3600 * For certain types of exceptions, it makes no sense to continue
3619 * execution. 3601 * execution.
3620 * 3602 *
3603 * Currently, the only type of exception that can be caught by a
3604 * TryCatch handler and for which it does not make sense to continue
3605 * is termination exception. Such exceptions are thrown when the
3606 * TerminateExecution methods are called to terminate a long-running
3607 * script.
3608 *
3621 * If CanContinue returns false, the correct action is to perform 3609 * If CanContinue returns false, the correct action is to perform
3622 * any C++ cleanup needed and then return. If CanContinue returns 3610 * any C++ cleanup needed and then return.
3623 * false and HasTerminated returns true, it is possible to call
3624 * ResumeExecution in order to continue calling into the engine.
3625 */ 3611 */
3626 bool CanContinue() const; 3612 bool CanContinue() const;
3627 3613
3628 /** 3614 /**
3629 * Returns true if an exception has been caught due to script execution
3630 * being terminated.
3631 *
3632 * There is no JavaScript representation of an execution termination
3633 * exception. Such exceptions are thrown when the TerminateExecution
3634 * methods are called to terminate a long-running script.
3635 *
3636 * If such an exception has been thrown, HasTerminated will return
3637 * true, indicating that it is possible to call ResumeExecution in
3638 * order to continue calling into the engine.
3639 */
3640 bool HasTerminated() const;
3641
3642 /**
3643 * Throws the exception caught by this TryCatch in a way that avoids 3615 * Throws the exception caught by this TryCatch in a way that avoids
3644 * it being caught again by this same TryCatch. As with ThrowException 3616 * it being caught again by this same TryCatch. As with ThrowException
3645 * it is illegal to execute any JavaScript operations after calling 3617 * it is illegal to execute any JavaScript operations after calling
3646 * ReThrow; the caller must return immediately to where the exception 3618 * ReThrow; the caller must return immediately to where the exception
3647 * is caught. 3619 * is caught.
3648 */ 3620 */
3649 Handle<Value> ReThrow(); 3621 Handle<Value> ReThrow();
3650 3622
3651 /** 3623 /**
3652 * Returns the exception caught by this try/catch block. If no exception has 3624 * Returns the exception caught by this try/catch block. If no exception has
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3707 void operator delete(void*, size_t); 3679 void operator delete(void*, size_t);
3708 3680
3709 v8::internal::Isolate* isolate_; 3681 v8::internal::Isolate* isolate_;
3710 void* next_; 3682 void* next_;
3711 void* exception_; 3683 void* exception_;
3712 void* message_; 3684 void* message_;
3713 bool is_verbose_ : 1; 3685 bool is_verbose_ : 1;
3714 bool can_continue_ : 1; 3686 bool can_continue_ : 1;
3715 bool capture_message_ : 1; 3687 bool capture_message_ : 1;
3716 bool rethrow_ : 1; 3688 bool rethrow_ : 1;
3717 bool has_terminated_ : 1;
3718 3689
3719 friend class v8::internal::Isolate; 3690 friend class v8::internal::Isolate;
3720 }; 3691 };
3721 3692
3722 3693
3723 // --- Context --- 3694 // --- Context ---
3724 3695
3725 3696
3726 /** 3697 /**
3727 * Ignore 3698 * Ignore
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4892 4863
4893 4864
4894 } // namespace v8 4865 } // namespace v8
4895 4866
4896 4867
4897 #undef V8EXPORT 4868 #undef V8EXPORT
4898 #undef TYPE_CHECK 4869 #undef TYPE_CHECK
4899 4870
4900 4871
4901 #endif // V8_H_ 4872 #endif // V8_H_
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