Книга: Microsoft Windows Embedded CE 6.0 Exam Preparation Kit

Termination Handler Syntax

Termination Handler Syntax

Windows Embedded CE supports termination handling. As a Microsoft extension to the C and C++ languages, it enables you to guarantee that the system always runs a certain block of code not matter how the flow of control leaves the guarded code block. This code section is called a termination handler, and is used to perform cleanup tasks even if an exception or some other error occurs in the guarded code. For example, you can use a termination handler to close thread handles that are no longer needed.

The following code fragment illustrates how to use the __try and __finally keywords for structured exception handling:

__try {
 // Place guarded code here.
} __finally {
 // Place termination code here.
}

Termination handling supports the __leave keyword within the guarded section. This keyword ends thread execution at the current position in the guarded section and resumes thread execution at the first statement in the termination handler without unwinding the call stack.

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