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+Sun Nov 28 12:23:57 2010 Koichi Sasada <ko1@atdot.net>
+
+ * thread.c, vm_core.h: make gvl_acquire/release/init/destruct
+ APIs to modularize GVL implementation.
+
+ * thread_pthread.c, thread_pthread.h: Two GVL implementations.
+ (1) Simple locking GVL which is same as existing GVL.
+ (2) Wake-up queued threads. The wake-up order is simple FIFO.
+ (We can make several queues to support exact priorities, however
+ this causes some issues such as priority inversion and so on.)
+ This impl. prevents spin-loop (*1) caused on SMP environemnts.
+ *1: Only one Ruby thread acqures GVL again and again.
+ Bug #2359 [ruby-core:26694]
+
+ * thread_win32.c, thread_win32.h: Using simple lock
+ not by CRITICAL_SECTION but by Mutex.
+ Bug #3890 [ruby-dev:42315]
+
+ * vm.c (ruby_vm_destruct): ditto.
+
Sun Nov 28 04:40:00 2010 Luis Lavena <luislavena@gmail.com>
* io.c (io_fwrite): use rb_w32_write_console under Windows.