Changeset 39337 in webkit for trunk/JavaScriptCore/wtf/ThreadingPthreads.cpp

Timestamp:

Dec 16, 2008, 1:15:22 PM (16 years ago)

Author:

Nikolas Zimmermann

Message:

Reviewed by Darin Adler.

Fixes: ​https://bugs.webkit.org/show_bug.cgi?id=22876

Unify random number generation in JavaScriptCore & WebCore, by introducing
wtf/RandomNumber.h and moving wtf_random/wtf_random_init out of MathExtras.h.

wtf_random_init() has been renamed to initializeRandomNumberGenerator() and
lives in it's own private header: wtf/RandomNumberSeed.h, only intended to
be used from within JavaScriptCore.

wtf_random() has been renamed to randomNumber() and lives in a public header
wtf/RandomNumber.h, usable from within JavaScriptCore & WebCore. It encapsulates
the code taking care of initializing the random number generator (only when
building without ENABLE(JSC_MULTIPLE_THREADS), otherwhise initializeThreading()
already took care of that).

Functional change on darwin: Use random() instead of rand(), as it got a larger
period (more randomness). HTMLFormElement already contains this implementation
and I just moved it in randomNumber(), as special case for PLATFORM(DARWIN).

File:

• trunk/JavaScriptCore/wtf/ThreadingPthreads.cpp (modified) (2 diffs)

trunk/JavaScriptCore/wtf/ThreadingPthreads.cpp

@@ -36 +36 @@
 #include "HashMap.h"
 #include "MainThread.h"
-#include "MathExtras.h"
+#include "RandomNumberSeed.h"
 
 #include <errno.h>
@@ -62 +62 @@
         atomicallyInitializedStaticMutex = new Mutex;
         threadMapMutex();
-        wtf_random_init();
+        initializeRandomNumberGenerator();
 #if !PLATFORM(DARWIN)
         mainThreadIdentifier = currentThread();