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libcxxabi/src/cxa_exception.cpp
| Show First 20 Lines • Show All 438 Lines • ▼ Show 20 Lines | __cxa_begin_catch(void* unwind_arg) throw() | ||||
| // exception_header is a hackish offset from a foreign exception, but it | // exception_header is a hackish offset from a foreign exception, but it | ||||
| // works as long as we're careful not to try to access any __cxa_exception | // works as long as we're careful not to try to access any __cxa_exception | ||||
| // parts. | // parts. | ||||
| __cxa_exception* exception_header = | __cxa_exception* exception_header = | ||||
| cxa_exception_from_exception_unwind_exception | cxa_exception_from_exception_unwind_exception | ||||
| ( | ( | ||||
| static_cast<_Unwind_Exception*>(unwind_exception) | static_cast<_Unwind_Exception*>(unwind_exception) | ||||
| ); | ); | ||||
| #if defined(__MVS__) | |||||
| // Remove the exception object from the linked list of exceptions that the z/OS unwinder | |||||
| // maintains before adding it to the libc++abi list of caught exceptions. | |||||
| // The libc++abi will manage the lifetime of the exception from this point forward. | |||||
| _UnwindZOS_PopException(); | |||||
| #endif | |||||
| if (native_exception) | if (native_exception) | ||||
| { | { | ||||
| // Increment the handler count, removing the flag about being rethrown | // Increment the handler count, removing the flag about being rethrown | ||||
| exception_header->handlerCount = exception_header->handlerCount < 0 ? | exception_header->handlerCount = exception_header->handlerCount < 0 ? | ||||
| -exception_header->handlerCount + 1 : exception_header->handlerCount + 1; | -exception_header->handlerCount + 1 : exception_header->handlerCount + 1; | ||||
| // place the exception on the top of the stack if it's not already | // place the exception on the top of the stack if it's not already | ||||
| // there by a previous rethrow | // there by a previous rethrow | ||||
| if (exception_header != globals->caughtExceptions) | if (exception_header != globals->caughtExceptions) | ||||
| ▲ Show 20 Lines • Show All 314 Lines • Show Last 20 Lines | |||||