Changeset 53580 in webkit for trunk/JavaScriptCore/wtf/TCSpinLock.h

Timestamp:

Jan 20, 2010, 5:01:58 PM (15 years ago)

Author:

[email protected]

Message:

Use the inline i386 assembly for x86_64 as well rather than falling back to using pthread mutexes.

Reviewed by Oliver Hunt.

• wtf/TCSpinLock.h:

(TCMalloc_SpinLock::Lock):
(TCMalloc_SpinLock::Unlock):
(TCMalloc_SlowLock):

File:

• trunk/JavaScriptCore/wtf/TCSpinLock.h (modified) (4 diffs)

trunk/JavaScriptCore/wtf/TCSpinLock.h

@@ -34 +34 @@
 #define TCMALLOC_INTERNAL_SPINLOCK_H__
 
-#if (CPU(X86) || CPU(PPC)) && (COMPILER(GCC) || COMPILER(MSVC))
+#if (CPU(X86) || CPU(X86_64) || CPU(PPC)) && (COMPILER(GCC) || COMPILER(MSVC))
 
 #include <time.h>       /* For nanosleep() */
@@ -63 +63 @@
     int r;
 #if COMPILER(GCC)
-#if CPU(X86)
+#if CPU(X86) || CPU(X86_64)
     __asm__ __volatile__
       ("xchgl %0, %1"
@@ -93 +93 @@
   inline void Unlock() {
 #if COMPILER(GCC)
-#if CPU(X86)
+#if CPU(X86) || CPU(X86_64)
     __asm__ __volatile__
       ("movl $0, %0"
@@ -139 +139 @@
     int r;
 #if COMPILER(GCC)
-#if CPU(X86)
+#if CPU(X86) || CPU(X86_64)
     __asm__ __volatile__
       ("xchgl %0, %1"