bmalloc bun extras

oven-sh · Nov 21, 2024 · e25af35 · e25af35
1 parent ded1209
commit e25af35
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Showing 5 changed files with 19 additions and 0 deletions.
diff --git a/Source/bmalloc/bmalloc/BunExtras.h b/Source/bmalloc/bmalloc/BunExtras.h
@@ -0,0 +1,15 @@
+#include <bit>
+
+#if defined(__cpp_lib_bit_cast) && __cpp_lib_bit_cast >= 201806L
+#define __bit_cast std::bit_cast
+#else
+template <
+    typename Dest, typename Source,
+    typename std::enable_if<sizeof(Dest) == sizeof(Source) &&
+                                std::is_trivially_copyable<Source>::value &&
+                                std::is_trivially_copyable<Dest>::value,
+                            int>::type = 0>
+inline constexpr Dest __bit_cast(const Source &source) {
+  return __builtin_bit_cast(Dest, source);
+}
+#endif
diff --git a/Source/bmalloc/bmalloc/GigacageConfig.h b/Source/bmalloc/bmalloc/GigacageConfig.h
@@ -27,6 +27,7 @@
 
 #include "Algorithm.h"
 #include "GigacageKind.h"
+#include "BunExtras.h"
 #include <bit>
 #include <inttypes.h>
 

diff --git a/Source/bmalloc/bmalloc/IsoHeapImplInlines.h b/Source/bmalloc/bmalloc/IsoHeapImplInlines.h
@@ -29,6 +29,7 @@
 #include "IsoTLSDeallocatorEntry.h"
 #include "IsoSharedHeapInlines.h"
 #include "IsoSharedPageInlines.h"
+#include "BunExtras.h"
 
 #if !BUSE(LIBPAS)
 

diff --git a/Source/bmalloc/bmalloc/IsoPageInlines.h b/Source/bmalloc/bmalloc/IsoPageInlines.h
@@ -30,6 +30,7 @@
 #include "IsoHeapImpl.h"
 #include "IsoPage.h"
 #include "VMAllocate.h"
+#include "BunExtras.h"
 #include <bit>
 
 #if !BUSE(LIBPAS)

diff --git a/Source/bmalloc/bmalloc/Packed.h b/Source/bmalloc/bmalloc/Packed.h
@@ -26,6 +26,7 @@
 #pragma once
 
 #include "Algorithm.h"
+#include "BunExtras.h"
 #include <array>
 #include <bit>