1 //===- Exception.h - Generic language-independent exceptions ----*- C++ -*-===//
3 // This file defines the the shared data structures used by all language
4 // specific exception handling runtime libraries.
6 //===----------------------------------------------------------------------===//
11 struct llvm_exception {
12 // ExceptionDestructor - This call-back function is used to destroy the
13 // current exception, without requiring the caller to know what the concrete
16 void (*ExceptionDestructor)(llvm_exception *);
18 // ExceptionType - This field identifies what runtime library this exception
19 // came from. Currently defined values are:
21 // 1 - longjmp exception (see longjmp-exception.c)
22 // 2 - C++ exception (see c++-exception.c)
24 unsigned ExceptionType;
26 // Next - This points to the next exception in the current stack.
29 // HandlerCount - This is a count of the number of handlers which have
30 // currently caught this exception. If the handler is caught and this number
31 // falls to zero, the exception is destroyed.
33 unsigned HandlerCount;
35 // isRethrown - This field is set on an exception if it has been 'throw;'n.
36 // This is needed because the exception might exit through a number of the
37 // end_catch statements matching the number of begin_catch statements that
38 // have been processed. When this happens, the exception should become
39 // uncaught, not dead.
50 // Language independent exception handling API...
53 bool __llvm_eh_has_uncaught_exception() throw();
54 void *__llvm_eh_current_uncaught_exception_type(unsigned HandlerType) throw();
55 void __llvm_eh_add_uncaught_exception(llvm_exception *E) throw();
57 llvm_exception *__llvm_eh_get_uncaught_exception() throw();
58 llvm_exception *__llvm_eh_pop_from_uncaught_stack() throw();