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-rw-r--r--indra/llcommon/llexception.h114
1 files changed, 6 insertions, 108 deletions
diff --git a/indra/llcommon/llexception.h b/indra/llcommon/llexception.h
index f58a553eb3..68e609444e 100644
--- a/indra/llcommon/llexception.h
+++ b/indra/llcommon/llexception.h
@@ -12,7 +12,6 @@
#if ! defined(LL_LLEXCEPTION_H)
#define LL_LLEXCEPTION_H
-#include "always_return.h"
#include <stdexcept>
#include <boost/exception/exception.hpp>
#include <boost/throw_exception.hpp>
@@ -103,115 +102,14 @@ void crash_on_unhandled_exception_(const char*, int, const char*, const std::str
log_unhandled_exception_(__FILE__, __LINE__, BOOST_CURRENT_FUNCTION, CONTEXT)
void log_unhandled_exception_(const char*, int, const char*, const std::string&);
-/*****************************************************************************
-* Structured Exception Handling
-*****************************************************************************/
-// this is used in platform-generic code -- define outside #if LL_WINDOWS
-struct Windows_SEH_exception: public LLException
-{
- Windows_SEH_exception(const std::string& what): LLException(what) {}
-};
-
-namespace LL
-{
-namespace seh
-{
-
-#if LL_WINDOWS //-------------------------------------------------------------
-
-void fill_stacktrace(std::string& stacktrace, U32 code);
-
-// wrapper around caller's U32 filter(U32 code, struct _EXCEPTION_POINTERS*)
-// filter function: capture a stacktrace, if possible, before forwarding the
-// call to the caller's filter() function
-template <typename FILTER>
-U32 filter_(std::string& stacktrace, FILTER&& filter,
- U32 code, struct _EXCEPTION_POINTERS* exptrs)
-{
- // By the time the handler gets control, the stack has been unwound,
- // so report the stack trace now at filter() time.
- fill_stacktrace(stacktrace, code);
- return std::forward<FILTER>(filter)(code, exptrs);
-}
-
-template <typename TRYCODE, typename FILTER, typename HANDLER>
-auto catcher_inner(std::string& stacktrace,
- TRYCODE&& trycode, FILTER&& filter, HANDLER&& handler)
-{
- __try
- {
- return std::forward<TRYCODE>(trycode)();
- }
- __except (filter_(stacktrace,
- std::forward<FILTER>(filter),
- GetExceptionCode(), GetExceptionInformation()))
- {
- return always_return<decltype(trycode())>(
- std::forward<HANDLER>(handler), GetExceptionCode(), stacktrace);
- }
-}
-
-// triadic variant specifies try(), filter(U32, struct _EXCEPTION_POINTERS*),
-// handler(U32, const std::string& stacktrace)
-// stacktrace may or may not be available
-template <typename TRYCODE, typename FILTER, typename HANDLER>
-auto catcher(TRYCODE&& trycode, FILTER&& filter, HANDLER&& handler)
-{
- // Construct and destroy this stacktrace string in the outer function
- // because we can't do either in the function with __try/__except.
- std::string stacktrace;
- return catcher_inner(stacktrace,
- std::forward<TRYCODE>(trycode),
- std::forward<FILTER>(filter),
- std::forward<HANDLER>(handler));
-}
-// common_filter() handles the typical case in which we want our handler
-// clause to handle only Structured Exceptions rather than explicitly-thrown
-// C++ exceptions
-U32 common_filter(U32 code, struct _EXCEPTION_POINTERS*);
-
-// dyadic variant specifies try(), handler(U32, stacktrace), assumes common_filter()
-template <typename TRYCODE, typename HANDLER>
-auto catcher(TRYCODE&& trycode, HANDLER&& handler)
-{
- return catcher(std::forward<TRYCODE>(trycode),
- common_filter,
- std::forward<HANDLER>(handler));
-}
-
-// monadic variant specifies try(), assumes default filter and handler
-template <typename TRYCODE>
-auto catcher(TRYCODE&& trycode)
-{
- return catcher(std::forward<TRYCODE>(trycode), rethrow);
-}
-
-[[noreturn]] void rethrow(U32 code, const std::string& stacktrace);
-
-#else // not LL_WINDOWS -----------------------------------------------------
-
-template <typename TRYCODE, typename FILTER, typename HANDLER>
-auto catcher(TRYCODE&& trycode, FILTER&&, HANDLER&&)
-{
- return std::forward<TRYCODE>(trycode)();
-}
-
-template <typename TRYCODE, typename HANDLER>
-auto catcher(TRYCODE&& trycode, HANDLER&&)
-{
- return std::forward<TRYCODE>(trycode)();
-}
-
-template <typename TRYCODE>
-auto catcher(TRYCODE&& trycode)
-{
- return std::forward<TRYCODE>(trycode)();
-}
+#if LL_WINDOWS
-#endif // not LL_WINDOWS -----------------------------------------------------
+// SEH exception filtering for use in __try __except
+// Separates C++ exceptions from C SEH exceptions
+// Todo: might be good idea to do some kind of seh_to_msc_wrapper(function, ARGS&&);
+U32 msc_exception_filter(U32 code, struct _EXCEPTION_POINTERS *exception_infop);
-} // namespace LL::seh
-} // namespace LL
+#endif //LL_WINDOWS
#endif /* ! defined(LL_LLEXCEPTION_H) */