Changeset 48300 in webkit for trunk/JavaScriptCore/wtf/Threading.h

Timestamp:

Sep 11, 2009, 6:29:25 AM (16 years ago)

Author:

[email protected]

Message:

2009-09-11 Jocelyn Turcotte <​[email protected]>

Reviewed by Simon Hausmann.

Compiling JavaScriptCore on sparc 64 with gcc fails.

ThreadSafeShared uses the atomic gnu_cxx::exchange_and_add with an int,
however on sparc 64 the _Atomic_word argument is typedefed to long (8 bytes).

The patch disables WTF_USE_LOCKFREE_THREADSAFESHARED in ThreadSafeShared to use
a mutex instead when compiling for sparc 64 with gcc.

​https://bugs.webkit.org/show_bug.cgi?id=29175

• wtf/Platform.h: sparc64 is not defined on all OS.

Uses instead: sparc && arch64

sparcv9

• wtf/Threading.h:

File:

• trunk/JavaScriptCore/wtf/Threading.h (modified) (1 diff)

trunk/JavaScriptCore/wtf/Threading.h

@@ -229 +229 @@
 inline int atomicDecrement(int volatile* addend) { return OSAtomicDecrement32Barrier(const_cast<int*>(addend)); }
 
-#elif COMPILER(GCC)
+#elif COMPILER(GCC) && !PLATFORM(SPARC64) // sizeof(_Atomic_word) != sizeof(int) on sparc64 gcc
 #define WTF_USE_LOCKFREE_THREADSAFESHARED 1