[PATCH] D28442: [libc++] Implement terminate(), unexpected() and uncaught_exceptions() on Windows
Eric Fiselier via Phabricator via cfe-commits
cfe-commits at lists.llvm.org
Fri Jan 6 22:05:38 PST 2017
EricWF created this revision.
EricWF added reviewers: compnerd, smeenai, rnk, majnemer.
EricWF added a subscriber: cfe-commits.
This patch implements the following functions on Windows by forwarding to the MSVCRT:
- `get_terminate()`
- `set_terminate()`
- `terminate()`
- `set_unexpected()`
- `get_unexpected()`
- `unexpected()`
- `uncaught_exception()`
- `uncaught_exceptions()`
https://reviews.llvm.org/D28442
Files:
src/exception.cpp
Index: src/exception.cpp
===================================================================
--- src/exception.cpp
+++ src/exception.cpp
@@ -12,7 +12,10 @@
#include "exception"
#include "new"
-#if defined(__APPLE__) && !defined(LIBCXXRT) && \
+#if defined(_LIBCPP_ABI_MICROSOFT)
+#include <eh.h>
+#include <corecrt_terminate.h>
+#elif defined(__APPLE__) && !defined(LIBCXXRT) && \
!defined(_LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY)
#include <cxxabi.h>
@@ -46,13 +49,21 @@
unexpected_handler
set_unexpected(unexpected_handler func) _NOEXCEPT
{
- return __sync_lock_test_and_set(&__unexpected_handler, func);
+#if defined(_LIBCPP_ABI_MICROSOFT)
+ return ::set_unexpected(func);
+#else
+ return __sync_lock_test_and_set(&__unexpected_handler, func);
+#endif
}
unexpected_handler
get_unexpected() _NOEXCEPT
{
- return __sync_fetch_and_add(&__unexpected_handler, (unexpected_handler)0);
+#if defined(_LIBCPP_ABI_MICROSOFT)
+ return ::_get_unexpected();
+#else
+ return __sync_fetch_and_add(&__unexpected_handler, (unexpected_handler)0);
+#endif
}
_LIBCPP_NORETURN
@@ -67,13 +78,21 @@
terminate_handler
set_terminate(terminate_handler func) _NOEXCEPT
{
- return __sync_lock_test_and_set(&__terminate_handler, func);
+#if defined(_LIBCPP_ABI_MICROSOFT)
+ return ::set_terminate(func);
+#else
+ return __sync_lock_test_and_set(&__terminate_handler, func);
+#endif
}
terminate_handler
get_terminate() _NOEXCEPT
{
- return __sync_fetch_and_add(&__terminate_handler, (terminate_handler)0);
+#if defined(_LIBCPP_ABI_MICROSOFT)
+ return ::_get_terminate();
+#else
+ return __sync_fetch_and_add(&__terminate_handler, (terminate_handler)0);
+#endif
}
#ifndef __EMSCRIPTEN__ // We provide this in JS
@@ -103,6 +122,7 @@
#endif // !defined(LIBCXXRT) && !defined(_LIBCPPABI_VERSION)
#if !defined(LIBCXXRT) && !defined(__GLIBCXX__) && !defined(__EMSCRIPTEN__)
+
bool uncaught_exception() _NOEXCEPT { return uncaught_exceptions() > 0; }
int uncaught_exceptions() _NOEXCEPT
@@ -115,7 +135,9 @@
# else
return __cxa_uncaught_exception() ? 1 : 0;
# endif
-#else // __APPLE__
+#elif defined(_LIBCPP_ABI_MICROSOFT)
+ return __uncaught_exceptions();
+#else
# if defined(_MSC_VER) && ! defined(__clang__)
_LIBCPP_WARNING("uncaught_exceptions not yet implemented")
# else
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