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authorLiam <byteslice@airmail.cc>2022-06-08 00:05:32 +0200
committerLiam <byteslice@airmail.cc>2022-06-14 02:09:00 +0200
commit58fea44eb5bfe268c1ddd2ea063744eb7bbe7e44 (patch)
tree52b3e426fa061171cab80a7b61ab6e52aa163966 /src/common
parentcommon: Change semantics of UNREACHABLE to unconditionally crash (diff)
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Diffstat (limited to 'src/common')
-rw-r--r--src/common/assert.cpp10
-rw-r--r--src/common/assert.h58
2 files changed, 36 insertions, 32 deletions
diff --git a/src/common/assert.cpp b/src/common/assert.cpp
index a27a025ae..b20c19123 100644
--- a/src/common/assert.cpp
+++ b/src/common/assert.cpp
@@ -6,9 +6,13 @@
#include "common/settings.h"
-void assert_handle_failure() {
- if (Settings::values.use_debug_asserts) {
- Crash();
+void assert_check_condition(bool cond, std::function<void()>&& on_failure) {
+ if (!cond) {
+ on_failure();
+
+ if (Settings::values.use_debug_asserts) {
+ Crash();
+ }
}
}
diff --git a/src/common/assert.h b/src/common/assert.h
index 478bfa856..fb7808657 100644
--- a/src/common/assert.h
+++ b/src/common/assert.h
@@ -4,57 +4,57 @@
#pragma once
+#include <functional>
+
#include "common/logging/log.h"
// Sometimes we want to try to continue even after hitting an assert.
// However touching this file yields a global recompilation as this header is included almost
// everywhere. So let's just move the handling of the failed assert to a single cpp file.
-void assert_handle_failure();
-
-[[noreturn]] void unreachable_impl();
// For asserts we'd like to keep all the junk executed when an assert happens away from the
// important code in the function. One way of doing this is to put all the relevant code inside a
-// lambda and force the compiler to not inline it. Unfortunately, MSVC seems to have no syntax to
-// specify __declspec on lambda functions, so what we do instead is define a noinline wrapper
-// template that calls the lambda. This seems to generate an extra instruction at the call-site
-// compared to the ideal implementation (which wouldn't support ASSERT_MSG parameters), but is good
-// enough for our purposes.
-template <typename Fn>
-#if defined(_MSC_VER)
-[[msvc::noinline]]
-#elif defined(__GNUC__)
-[[gnu::cold, gnu::noinline]]
-#endif
-static void
-assert_noinline_call(const Fn& fn) {
- fn();
- assert_handle_failure();
-}
+// lambda and force the compiler to not inline it.
+void assert_check_condition(bool cond, std::function<void()>&& on_failure);
+
+[[noreturn]] void unreachable_impl();
#define ASSERT(_a_) \
- do \
- if (!(_a_)) { \
- assert_noinline_call([] { LOG_CRITICAL(Debug, "Assertion Failed!"); }); \
+ do { \
+ if (std::is_constant_evaluated()) { \
+ if (!(_a_)) { \
+ /* Will trigger compile error here */ \
+ assert_check_condition(bool(_a_), \
+ [] { LOG_CRITICAL(Debug, "Assertion Failed!"); }); \
+ } \
+ } else { \
+ assert_check_condition(bool(_a_), [] { LOG_CRITICAL(Debug, "Assertion Failed!"); }); \
} \
- while (0)
+ } while (0)
#define ASSERT_MSG(_a_, ...) \
- do \
- if (!(_a_)) { \
- assert_noinline_call([&] { LOG_CRITICAL(Debug, "Assertion Failed!\n" __VA_ARGS__); }); \
+ do { \
+ if (std::is_constant_evaluated()) { \
+ if (!(_a_)) { \
+ /* Will trigger compile error here */ \
+ assert_check_condition(bool(_a_), \
+ [] { LOG_CRITICAL(Debug, "Assertion Failed!"); }); \
+ } \
+ } else { \
+ assert_check_condition( \
+ bool(_a_), [&] { LOG_CRITICAL(Debug, "Assertion Failed!\n" __VA_ARGS__); }); \
} \
- while (0)
+ } while (0)
#define UNREACHABLE() \
do { \
- assert_noinline_call([] { LOG_CRITICAL(Debug, "Unreachable code!"); }); \
+ LOG_CRITICAL(Debug, "Unreachable code!"); \
unreachable_impl(); \
} while (0)
#define UNREACHABLE_MSG(...) \
do { \
- assert_noinline_call([&] { LOG_CRITICAL(Debug, "Unreachable code!\n" __VA_ARGS__); }); \
+ LOG_CRITICAL(Debug, "Unreachable code!\n" __VA_ARGS__); \
unreachable_impl(); \
} while (0)