Changeset 227683 in webkit for trunk/Source/JavaScriptCore/runtime/VM.cpp

Timestamp:

Jan 26, 2018, 10:42:52 AM (8 years ago)

Author:

[email protected]

Message:

Disable TLS-based TLCs
​https://bugs.webkit.org/show_bug.cgi?id=182175

Reviewed by Saam Barati.

Source/JavaScriptCore:

Check for the new USE(FAST_TLS_FOR_TLC) flag instead of just ENABLE(FAST_TLS_JIT).

• heap/BlockDirectory.cpp:

(JSC::BlockDirectory::~BlockDirectory):

• heap/BlockDirectory.h:
• heap/ThreadLocalCache.cpp:

(JSC::ThreadLocalCache::installSlow):
(JSC::ThreadLocalCache::installData):

• heap/ThreadLocalCache.h:
• heap/ThreadLocalCacheInlines.h:

(JSC::ThreadLocalCache::getImpl):

• jit/AssemblyHelpers.cpp:

(JSC::AssemblyHelpers::emitAllocateWithNonNullAllocator):

• runtime/VM.cpp:

(JSC::VM::~VM):

• runtime/VM.h:

Source/WTF:

Add a flag for TLS-based TLCs and set it to 0. We can re-enable this feature when we need to use TLCs for
actual thread-local allocation and when we fix the fact that WebCore context switches JSC VMs without telling
us.

• wtf/Platform.h:

File:

• trunk/Source/JavaScriptCore/runtime/VM.cpp (modified) (1 diff)

trunk/Source/JavaScriptCore/runtime/VM.cpp

@@ -500 +500 @@
     heap.lastChanceToFinalize();
     
-#if !ENABLE(FAST_TLS_JIT)
+#if !USE(FAST_TLS_FOR_TLC)
     ThreadLocalCache::destructor(threadLocalCacheData);
 #endif