diff --git a/desmume/src/libretro-common/rthreads/rthreads.c b/desmume/src/libretro-common/rthreads/rthreads.c
index 794b09909..edf3829c4 100644
--- a/desmume/src/libretro-common/rthreads/rthreads.c
+++ b/desmume/src/libretro-common/rthreads/rthreads.c
@@ -1,556 +1,592 @@
-/* Copyright  (C) 2010-2016 The RetroArch team
- *
- * ---------------------------------------------------------------------------------------
- * The following license statement only applies to this file (rthreads.c).
- * ---------------------------------------------------------------------------------------
- *
- * Permission is hereby granted, free of charge,
- * to any person obtaining a copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation the rights to
- * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
- * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-#ifdef __unix__
-#define _POSIX_C_SOURCE 199309
-#endif
-
-#include <stdlib.h>
-
-#include <boolean.h>
-#include <rthreads/rthreads.h>
-
-/* with RETRO_WIN32_USE_PTHREADS, pthreads can be used even on win32. Maybe only supported in MSVC>=2005  */
-
-#if defined(_WIN32) && !defined(RETRO_WIN32_USE_PTHREADS)
-#define USE_WIN32_THREADS
-#ifdef _XBOX
-#include <xtl.h>
-#else
-#define WIN32_LEAN_AND_MEAN
-#include <windows.h>
-#endif
-#elif defined(GEKKO)
-#include "gx_pthread.h"
-#elif defined(PSP)
-#include "psp_pthread.h"
-#else
-#include <pthread.h>
-#include <time.h>
-#endif
-
-#ifdef __MACH__
-#include <mach/clock.h>
-#include <mach/mach.h>
-#endif
-
-struct thread_data
-{
-   void (*func)(void*);
-   void *userdata;
-};
-
-struct sthread
-{
-#ifdef USE_WIN32_THREADS
-   HANDLE thread;
-#else
-   pthread_t id;
-#endif
-};
-
-struct slock
-{
-#ifdef USE_WIN32_THREADS
-   HANDLE lock;
-#else
-   pthread_mutex_t lock;
-#endif
-};
-
-#ifdef USE_WIN32_THREADS
-//TODO - there's actually no need for this struct. we could do it all with ugly pointer syntax. save that for later.
-struct ConceptualBlock
-{
-   struct ConceptualBlock* next;
-};
-#endif
-
-struct scond
-{
-#ifdef USE_WIN32_THREADS
-   HANDLE event, hot_potato;
-   volatile struct ConceptualBlock* volatile root; //the root of the queue; NULL if queue is empty
-   volatile int waiters; //equivalent to the queue length
-   volatile int wakens;
-#else
-   pthread_cond_t cond;
-#endif
-};
-
-#ifdef USE_WIN32_THREADS
-static DWORD CALLBACK thread_wrap(void *data_)
-#else
-static void *thread_wrap(void *data_)
-#endif
-{
-   struct thread_data *data = (struct thread_data*)data_;
-   if (!data)
-	   return 0;
-   data->func(data->userdata);
-   free(data);
-   return 0;
-}
-
-/**
- * sthread_create:
- * @start_routine           : thread entry callback function
- * @userdata                : pointer to userdata that will be made
- *                            available in thread entry callback function
- *
- * Create a new thread.
- *
- * Returns: pointer to new thread if successful, otherwise NULL.
- */
-sthread_t *sthread_create(void (*thread_func)(void*), void *userdata)
-{
-   bool thread_created      = false;
-   struct thread_data *data = NULL;
-   sthread_t *thread        = (sthread_t*)calloc(1, sizeof(*thread));
-
-   if (!thread)
-      return NULL;
-
-   data                     = (struct thread_data*)calloc(1, sizeof(*data));
-   if (!data)
-      goto error;
-
-   data->func = thread_func;
-   data->userdata = userdata;
-
-#ifdef USE_WIN32_THREADS
-   thread->thread = CreateThread(NULL, 0, thread_wrap, data, 0, NULL);
-   thread_created = !!thread->thread;
-#else
-   thread_created = pthread_create(&thread->id, NULL, thread_wrap, data) == 0;
-#endif
-
-   if (!thread_created)
-      goto error;
-
-   return thread;
-
-error:
-   if (data)
-      free(data);
-   free(thread);
-   return NULL;
-}
-
-/**
- * sthread_detach:
- * @thread                  : pointer to thread object 
- *
- * Detach a thread. When a detached thread terminates, its
- * resource sare automatically released back to the system
- * without the need for another thread to join with the 
- * terminated thread.
- *
- * Returns: 0 on success, otherwise it returns a non-zero error number.
- */
-int sthread_detach(sthread_t *thread)
-{
-#ifdef USE_WIN32_THREADS
-   CloseHandle(thread->thread);
-   free(thread);
-   return 0;
-#else
-   return pthread_detach(thread->id);
-#endif
-}
-
-/**
- * sthread_join:
- * @thread                  : pointer to thread object 
- *
- * Join with a terminated thread. Waits for the thread specified by
- * @thread to terminate. If that thread has already terminated, then
- * it will return immediately. The thread specified by @thread must
- * be joinable.
- * 
- * Returns: 0 on success, otherwise it returns a non-zero error number.
- */
-void sthread_join(sthread_t *thread)
-{
-#ifdef USE_WIN32_THREADS
-   WaitForSingleObject(thread->thread, INFINITE);
-   CloseHandle(thread->thread);
-#else
-   pthread_join(thread->id, NULL);
-#endif
-   free(thread);
-}
-
-/**
- * sthread_isself:
- * @thread                  : pointer to thread object 
- *
- * Join with a terminated thread. Waits for the thread specified by
- * @thread to terminate. If that thread has already terminated, then
- * it will return immediately. The thread specified by @thread must
- * be joinable.
- * 
- * Returns: true (1) if calling thread is the specified thread
- */
-bool sthread_isself(sthread_t *thread)
-{
-#ifdef USE_WIN32_THREADS
-   return GetCurrentThread() == thread->thread;
-#else
-   return pthread_equal(pthread_self(),thread->id);
-#endif
-}
-
-/**
- * slock_new:
- *
- * Create and initialize a new mutex. Must be manually
- * freed.
- *
- * Returns: pointer to a new mutex if successful, otherwise NULL.
- **/
-slock_t *slock_new(void)
-{
-   bool mutex_created = false;
-   slock_t      *lock = (slock_t*)calloc(1, sizeof(*lock));
-   if (!lock)
-      return NULL;
-
-#ifdef USE_WIN32_THREADS
-   lock->lock         = CreateMutex(NULL, FALSE, NULL);
-   mutex_created      = !!lock->lock;
-#else
-   mutex_created      = (pthread_mutex_init(&lock->lock, NULL) == 0);
-#endif
-
-   if (!mutex_created)
-      goto error;
-
-   return lock;
-
-error:
-   free(lock);
-   return NULL;
-}
-
-/**
- * slock_free:
- * @lock                    : pointer to mutex object 
- *
- * Frees a mutex.
- **/
-void slock_free(slock_t *lock)
-{
-   if (!lock)
-      return;
-
-#ifdef USE_WIN32_THREADS
-   CloseHandle(lock->lock);
-#else
-   pthread_mutex_destroy(&lock->lock);
-#endif
-   free(lock);
-}
-
-/**
- * slock_lock:
- * @lock                    : pointer to mutex object 
- *
- * Locks a mutex. If a mutex is already locked by
- * another thread, the calling thread shall block until
- * the mutex becomes available.
-**/
-void slock_lock(slock_t *lock)
-{
-#ifdef USE_WIN32_THREADS
-   WaitForSingleObject(lock->lock, INFINITE);
-#else
-   pthread_mutex_lock(&lock->lock);
-#endif
-}
-
-/**
- * slock_unlock:
- * @lock                    : pointer to mutex object 
- *
- * Unlocks a mutex.
- **/
-void slock_unlock(slock_t *lock)
-{
-#ifdef USE_WIN32_THREADS
-   ReleaseMutex(lock->lock);
-#else
-   pthread_mutex_unlock(&lock->lock);
-#endif
-}
-
-/**
- * scond_new:
- *
- * Creates and initializes a condition variable. Must
- * be manually freed.
- *
- * Returns: pointer to new condition variable on success,
- * otherwise NULL.
- **/
-scond_t *scond_new(void)
-{
-   bool event_created = false;
-   scond_t      *cond = (scond_t*)calloc(1, sizeof(*cond));
-
-   if (!cond)
-      return NULL;
-
-#ifdef USE_WIN32_THREADS
-   /* this is very complex because recreating condition variable semantics with win32 parts is not easy (or maybe it is and I just havent seen how) */
-   /* the main problem is that a condition variable can be used to wake up a thread, but only if the thread is already waiting. */
-   /* whereas a win32 event will 'wake up' a thread in advance (the event will be set in advance, so a 'waiter' wont even have to wait on it) */
-   cond->event = CreateEvent(NULL, FALSE, FALSE, NULL);
-   cond->hot_potato = CreateEvent(NULL, FALSE, FALSE, NULL);
-   cond->waiters = 0;
-   cond->wakens = 0;
-   cond->root = NULL;
-   event_created = !!cond->event;
-#else
-   event_created = (pthread_cond_init(&cond->cond, NULL) == 0);
-#endif
-
-   if (!event_created)
-      goto error;
-
-   return cond;
-
-error:
-   free(cond);
-   return NULL;
-}
-
-/**
- * scond_free:
- * @cond                    : pointer to condition variable object 
- *
- * Frees a condition variable.
-**/
-void scond_free(scond_t *cond)
-{
-   if (!cond)
-      return;
-
-#ifdef USE_WIN32_THREADS
-   CloseHandle(cond->event);
-   CloseHandle(cond->hot_potato);
-#else
-   pthread_cond_destroy(&cond->cond);
-#endif
-   free(cond);
-}
-
-/**
- * scond_wait:
- * @cond                    : pointer to condition variable object 
- * @lock                    : pointer to mutex object 
- *
- * Block on a condition variable (i.e. wait on a condition). 
- **/
-void scond_wait(scond_t *cond, slock_t *lock)
-{
-#ifdef USE_WIN32_THREADS
-   
-   //setup a queue (linked list) of blocked threads
-   volatile struct ConceptualBlock myblock;
-   myblock.next = NULL;
-   volatile struct ConceptualBlock* volatile *  ptr = &cond->root;
-   while(*ptr != NULL)
-      ptr = &((*ptr)->next);
-   *ptr = &myblock;
-
-   //now the conceptual lock release and condition block are supposed to be atomic.
-   //we can't do that in windows, but we can simulate the effects by using the queue, by the following analysis:
-   //What happens if they aren't atomic?
-   //1. a signaller can rush in and signal, expecting a waiter to get it; but the waiter wouldn't, because he isn't blocked yet
-   //solution: win32 events make this easy. the event will sit there enabled
-   //2. a signaller can rush in and signal, and then turn right around and wait
-   //solution: the signaller will get queued behind the waiter, who's enqueued before he releases the mutex
-   
-   for(;;)
-   {
-      bool myturn = (cond->root == &myblock);
-
-      if(!myturn)
-      {
-         //well, someone else needs to get to go, maybe it's their turn
-         //NOTE: this depends on good fair behavour of thread blocking in the OS. I think it's OK
-         SetEvent(cond->hot_potato);
-      }
-      
-      ReleaseMutex(lock->lock);
-
-      if(myturn)
-      {
-         WaitForSingleObject(cond->event, INFINITE);
-         break;
-      }
-      else
-      {
-         WaitForSingleObject(cond->hot_potato, INFINITE);
-
-         //re-acquire mutex just for interrogating the queue
-         WaitForSingleObject(lock->lock, INFINITE);
-      }
-   }
-
-   //re-acquire mutex
-   WaitForSingleObject(lock->lock, INFINITE);
-
-   //remove ourselves from the queue
-   cond->root = myblock.next;
-
-   //if we have any more wakening to do, chain it here
-   cond->wakens--;
-   if(cond->wakens>0)
-      SetEvent(cond->event);
-
-   cond->waiters--;
-
-   //always leave this set. because--TBD: explain later
-   SetEvent(cond->hot_potato);
-
-#else
-   pthread_cond_wait(&cond->cond, &lock->lock);
-#endif
-}
-
-/**
- * scond_broadcast:
- * @cond                    : pointer to condition variable object 
- *
- * Broadcast a condition. Unblocks all threads currently blocked
- * on the specified condition variable @cond. 
- **/
-int scond_broadcast(scond_t *cond)
-{
-#ifdef USE_WIN32_THREADS
-   
-   /* remember: we currently have mutex */
-   if(cond->root == NULL) return 0;
-   
-   //awaken everything which is currently queued up
-   if(cond->wakens == 0) SetEvent(cond->event);
-   cond->wakens = cond->waiters;
-
-   return 0;
-#else
-   return pthread_cond_broadcast(&cond->cond);
-#endif
-}
-
-/**
- * scond_signal:
- * @cond                    : pointer to condition variable object 
- *
- * Signal a condition. Unblocks at least one of the threads currently blocked
- * on the specified condition variable @cond. 
- **/
-void scond_signal(scond_t *cond)
-{
-#ifdef USE_WIN32_THREADS
-
-   /* remember: we currently have mutex */
-   if(cond->root == NULL) return;
-   
-   //wake up the next thing in the queue
-   if(cond->wakens == 0) SetEvent(cond->event);
-   cond->wakens++;
-
-#else
-   pthread_cond_signal(&cond->cond);
-#endif
-}
-
-/**
- * scond_wait_timeout:
- * @cond                    : pointer to condition variable object 
- * @lock                    : pointer to mutex object 
- * @timeout_us              : timeout (in microseconds)
- *
- * Try to block on a condition variable (i.e. wait on a condition) until
- * @timeout_us elapses.
- *
- * Returns: false (0) if timeout elapses before condition variable is
- * signaled or broadcast, otherwise true (1).
- **/
-bool scond_wait_timeout(scond_t *cond, slock_t *lock, int64_t timeout_us)
-{
-#ifdef USE_WIN32_THREADS
-   DWORD ret;
-
-   WaitForSingleObject(cond->event, 0);
-   ret = SignalObjectAndWait(lock->lock, cond->event,
-         (DWORD)(timeout_us) / 1000, FALSE);
-
-   slock_lock(lock);
-   return ret == WAIT_OBJECT_0;
-#else
-   int ret;
-   int64_t seconds, remainder;
-   struct timespec now = {0};
-
-#ifdef __MACH__
-   /* OSX doesn't have clock_gettime. */
-   clock_serv_t cclock;
-   mach_timespec_t mts;
-
-   host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
-   clock_get_time(cclock, &mts);
-   mach_port_deallocate(mach_task_self(), cclock);
-   now.tv_sec = mts.tv_sec;
-   now.tv_nsec = mts.tv_nsec;
-#elif defined(__CELLOS_LV2__)
-   sys_time_sec_t s;
-   sys_time_nsec_t n;
-
-   sys_time_get_current_time(&s, &n);
-   now.tv_sec  = s;
-   now.tv_nsec = n;
-#elif defined(__mips__)
-   struct timeval tm;
-
-   gettimeofday(&tm, NULL);
-   now.tv_sec = tm.tv_sec;
-   now.tv_nsec = tm.tv_usec * 1000;
-#elif defined(RETRO_WIN32_USE_PTHREADS)
-   _ftime64_s(&now);
-#elif !defined(GEKKO)
-   /* timeout on libogc is duration, not end time. */
-   clock_gettime(CLOCK_REALTIME, &now);
-#endif
-
-   seconds      = timeout_us / INT64_C(1000000);
-   remainder    = timeout_us % INT64_C(1000000);
-
-   now.tv_sec  += seconds;
-   now.tv_nsec += remainder * INT64_C(1000);
-
-   ret = pthread_cond_timedwait(&cond->cond, &lock->lock, &now);
-   return (ret == 0);
-#endif
+/* Copyright  (C) 2010-2016 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (rthreads.c).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifdef __unix__
+#define _POSIX_C_SOURCE 199309
+#endif
+
+#include <stdlib.h>
+
+#include <boolean.h>
+#include <rthreads/rthreads.h>
+
+/* with RETRO_WIN32_USE_PTHREADS, pthreads can be used even on win32. Maybe only supported in MSVC>=2005  */
+
+#if defined(_WIN32) && !defined(RETRO_WIN32_USE_PTHREADS)
+#define USE_WIN32_THREADS
+#ifdef _XBOX
+#include <xtl.h>
+#else
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#endif
+#elif defined(GEKKO)
+#include "gx_pthread.h"
+#elif defined(PSP)
+#include "psp_pthread.h"
+#else
+#include <pthread.h>
+#include <time.h>
+#endif
+
+#ifdef __MACH__
+#include <mach/clock.h>
+#include <mach/mach.h>
+#endif
+
+struct thread_data
+{
+   void (*func)(void*);
+   void *userdata;
+};
+
+struct sthread
+{
+#ifdef USE_WIN32_THREADS
+   HANDLE thread;
+#else
+   pthread_t id;
+#endif
+};
+
+struct slock
+{
+#ifdef USE_WIN32_THREADS
+   HANDLE lock;
+#else
+   pthread_mutex_t lock;
+#endif
+};
+
+struct scond
+{
+#ifdef USE_WIN32_THREADS
+
+   /* The syntax we'll use is mind-bending unless we use a struct. Plus, we might want to store more info later */
+   /* This will be used as a linked list immplementing a queue of waiting threads */
+   struct QueueEntry
+   {
+      struct QueueEntry* next;
+   };
+
+   /* With this implementation of scond, we don't have any way of waking (or even identifying) specific threads */
+   /* But we need to wake them in the order indicated by the queue. */
+   /* This potato token will get get passed around every waiter. The bearer can test whether he's next, and hold onto the potato if he is. */
+   /* When he's done he can then put it back into play to progress the queue further */
+   HANDLE hot_potato;
+
+   /* The primary signalled event. Hot potatoes are passed until this is set. */
+   HANDLE event; 
+
+   /* the head of the queue; NULL if queue is empty */
+   struct QueueEntry*  head; 
+
+   /* equivalent to the queue length */
+   int waiters; 
+
+   /* how many waiters in the queue have been conceptually wakened by signals (even if we haven't managed to actually wake them yet */
+   int wakens; 
+
+#else
+   pthread_cond_t cond;
+#endif
+};
+
+#ifdef USE_WIN32_THREADS
+static DWORD CALLBACK thread_wrap(void *data_)
+#else
+static void *thread_wrap(void *data_)
+#endif
+{
+   struct thread_data *data = (struct thread_data*)data_;
+   if (!data)
+	   return 0;
+   data->func(data->userdata);
+   free(data);
+   return 0;
+}
+
+/**
+ * sthread_create:
+ * @start_routine           : thread entry callback function
+ * @userdata                : pointer to userdata that will be made
+ *                            available in thread entry callback function
+ *
+ * Create a new thread.
+ *
+ * Returns: pointer to new thread if successful, otherwise NULL.
+ */
+sthread_t *sthread_create(void (*thread_func)(void*), void *userdata)
+{
+   bool thread_created      = false;
+   struct thread_data *data = NULL;
+   sthread_t *thread        = (sthread_t*)calloc(1, sizeof(*thread));
+
+   if (!thread)
+      return NULL;
+
+   data                     = (struct thread_data*)calloc(1, sizeof(*data));
+   if (!data)
+      goto error;
+
+   data->func = thread_func;
+   data->userdata = userdata;
+
+#ifdef USE_WIN32_THREADS
+   thread->thread = CreateThread(NULL, 0, thread_wrap, data, 0, NULL);
+   thread_created = !!thread->thread;
+#else
+   thread_created = pthread_create(&thread->id, NULL, thread_wrap, data) == 0;
+#endif
+
+   if (!thread_created)
+      goto error;
+
+   return thread;
+
+error:
+   if (data)
+      free(data);
+   free(thread);
+   return NULL;
+}
+
+/**
+ * sthread_detach:
+ * @thread                  : pointer to thread object 
+ *
+ * Detach a thread. When a detached thread terminates, its
+ * resource sare automatically released back to the system
+ * without the need for another thread to join with the 
+ * terminated thread.
+ *
+ * Returns: 0 on success, otherwise it returns a non-zero error number.
+ */
+int sthread_detach(sthread_t *thread)
+{
+#ifdef USE_WIN32_THREADS
+   CloseHandle(thread->thread);
+   free(thread);
+   return 0;
+#else
+   return pthread_detach(thread->id);
+#endif
+}
+
+/**
+ * sthread_join:
+ * @thread                  : pointer to thread object 
+ *
+ * Join with a terminated thread. Waits for the thread specified by
+ * @thread to terminate. If that thread has already terminated, then
+ * it will return immediately. The thread specified by @thread must
+ * be joinable.
+ * 
+ * Returns: 0 on success, otherwise it returns a non-zero error number.
+ */
+void sthread_join(sthread_t *thread)
+{
+#ifdef USE_WIN32_THREADS
+   WaitForSingleObject(thread->thread, INFINITE);
+   CloseHandle(thread->thread);
+#else
+   pthread_join(thread->id, NULL);
+#endif
+   free(thread);
+}
+
+/**
+ * sthread_isself:
+ * @thread                  : pointer to thread object 
+ *
+ * Join with a terminated thread. Waits for the thread specified by
+ * @thread to terminate. If that thread has already terminated, then
+ * it will return immediately. The thread specified by @thread must
+ * be joinable.
+ * 
+ * Returns: true (1) if calling thread is the specified thread
+ */
+bool sthread_isself(sthread_t *thread)
+{
+#ifdef USE_WIN32_THREADS
+   return GetCurrentThread() == thread->thread;
+#else
+   return pthread_equal(pthread_self(),thread->id);
+#endif
+}
+
+/**
+ * slock_new:
+ *
+ * Create and initialize a new mutex. Must be manually
+ * freed.
+ *
+ * Returns: pointer to a new mutex if successful, otherwise NULL.
+ **/
+slock_t *slock_new(void)
+{
+   bool mutex_created = false;
+   slock_t      *lock = (slock_t*)calloc(1, sizeof(*lock));
+   if (!lock)
+      return NULL;
+
+#ifdef USE_WIN32_THREADS
+   lock->lock         = CreateMutex(NULL, FALSE, NULL);
+   mutex_created      = !!lock->lock;
+#else
+   mutex_created      = (pthread_mutex_init(&lock->lock, NULL) == 0);
+#endif
+
+   if (!mutex_created)
+      goto error;
+
+   return lock;
+
+error:
+   free(lock);
+   return NULL;
+}
+
+/**
+ * slock_free:
+ * @lock                    : pointer to mutex object 
+ *
+ * Frees a mutex.
+ **/
+void slock_free(slock_t *lock)
+{
+   if (!lock)
+      return;
+
+#ifdef USE_WIN32_THREADS
+   CloseHandle(lock->lock);
+#else
+   pthread_mutex_destroy(&lock->lock);
+#endif
+   free(lock);
+}
+
+/**
+ * slock_lock:
+ * @lock                    : pointer to mutex object 
+ *
+ * Locks a mutex. If a mutex is already locked by
+ * another thread, the calling thread shall block until
+ * the mutex becomes available.
+**/
+void slock_lock(slock_t *lock)
+{
+#ifdef USE_WIN32_THREADS
+   WaitForSingleObject(lock->lock, INFINITE);
+#else
+   pthread_mutex_lock(&lock->lock);
+#endif
+}
+
+/**
+ * slock_unlock:
+ * @lock                    : pointer to mutex object 
+ *
+ * Unlocks a mutex.
+ **/
+void slock_unlock(slock_t *lock)
+{
+#ifdef USE_WIN32_THREADS
+   ReleaseMutex(lock->lock);
+#else
+   pthread_mutex_unlock(&lock->lock);
+#endif
+}
+
+/**
+ * scond_new:
+ *
+ * Creates and initializes a condition variable. Must
+ * be manually freed.
+ *
+ * Returns: pointer to new condition variable on success,
+ * otherwise NULL.
+ **/
+scond_t *scond_new(void)
+{
+   scond_t      *cond = (scond_t*)calloc(1, sizeof(*cond));
+
+   if (!cond)
+      return NULL;
+
+#ifdef USE_WIN32_THREADS
+   /* This is very complex because recreating condition variable semantics with win32 parts is not easy */
+   /* The main problem is that a condition variable can be used to wake up a thread, but only if the thread is already waiting; */
+   /* whereas a win32 event will 'wake up' a thread in advance (the event will be set in advance, so a 'waiter' wont even have to wait on it) */
+   /* So at the very least, we need to do something clever. But there's bigger problems. */
+   /* We don't even have a straightforward way in win32 to satisfy pthread_cond_wait's atomicity requirement. The bulk of this algorithm is solving that. */
+   /* Note: We might could simplify this using vista+ condition variables, but we wanted an XP compatible solution. */
+   cond->event = CreateEvent(NULL, FALSE, FALSE, NULL);
+   if(!cond->event) goto error;
+   cond->hot_potato = CreateEvent(NULL, FALSE, FALSE, NULL);
+   if(!cond->hot_potato)
+   {
+      CloseHandle(cond->event);
+      goto error;
+   }
+   cond->waiters = cond->wakens = 0;
+   cond->head = NULL;
+
+#else
+   if(pthread_cond_init(&cond->cond, NULL) != 0)
+      goto error;
+#endif
+
+   return cond;
+
+error:
+   free(cond);
+   return NULL;
+}
+
+/**
+ * scond_free:
+ * @cond                    : pointer to condition variable object 
+ *
+ * Frees a condition variable.
+**/
+void scond_free(scond_t *cond)
+{
+   if (!cond)
+      return;
+
+#ifdef USE_WIN32_THREADS
+   CloseHandle(cond->event);
+   CloseHandle(cond->hot_potato);
+#else
+   pthread_cond_destroy(&cond->cond);
+#endif
+   free(cond);
+}
+
+/**
+ * scond_wait:
+ * @cond                    : pointer to condition variable object 
+ * @lock                    : pointer to mutex object 
+ *
+ * Block on a condition variable (i.e. wait on a condition). 
+ **/
+void scond_wait(scond_t *cond, slock_t *lock)
+{
+#ifdef USE_WIN32_THREADS
+   
+   /* add ourselves to a queue of waiting threads */
+   struct QueueEntry myentry;
+   myentry.next = NULL;
+   struct QueueEntry**  ptr = &cond->head;
+   while(*ptr) /* walk to the end of the linked list */
+      ptr = &((*ptr)->next);
+   *ptr = &myentry;
+
+   cond->waiters++;
+
+   /* now the conceptual lock release and condition block are supposed to be atomic. */
+   /* we can't do that in windows, but we can simulate the effects by using the queue, by the following analysis: */
+   /* What happens if they aren't atomic? */
+   /* 1. a signaller can rush in and signal, expecting a waiter to get it; but the waiter wouldn't, because he isn't blocked yet */
+   /* solution: win32 events make this easy. the event will sit there enabled */
+   /* 2. a signaller can rush in and signal, and then turn right around and wait */
+   /* solution: the signaller will get queued behind the waiter, who's enqueued before he releases the mutex */
+   
+   for(;;)
+   {
+      /* We're always in the mutex here*/
+
+      /* It's my turn if I'm the head of the queue */
+      bool myturn = (cond->head == &myentry);
+
+      if(!myturn)
+      {
+         /* As long as someone is even going to be able to wake up when they receive the potato, keep it going round */
+         if(cond->wakens>0)
+            SetEvent(cond->hot_potato); 
+      }
+
+      /* If it's my turn, I hold the potato */
+
+      ReleaseMutex(lock->lock);
+
+      if(myturn)
+      {
+         WaitForSingleObject(cond->event, INFINITE);
+         break;
+      }
+      else
+      {
+         /* Wait to catch the hot potato before checking for my turn again */
+         WaitForSingleObject(cond->hot_potato, INFINITE);
+
+         /* Re-acquire the mutex just for interrogating the queue */
+         WaitForSingleObject(lock->lock, INFINITE);
+      }
+   }
+
+   /* Reacquire the main mutex */
+   WaitForSingleObject(lock->lock, INFINITE);
+
+   /* Remove ourselves from the queue */
+   cond->head = myentry.next;
+   cond->waiters--;
+
+   /* If any other wakenings are pending, go ahead and set it up  */
+   /* There may actually be no waiters. That's OK. The first waiter will come in, find it's his turn, and immediately get the signaled event */
+   cond->wakens--;
+   if(cond->wakens>0)
+   {
+      SetEvent(cond->event);
+
+      /* Progress the queue: Put the hot potato back into play. It'll be tossed around until next in line gets it */
+      SetEvent(cond->hot_potato); 
+   }
+
+#else
+   pthread_cond_wait(&cond->cond, &lock->lock);
+#endif
+}
+
+/**
+ * scond_broadcast:
+ * @cond                    : pointer to condition variable object 
+ *
+ * Broadcast a condition. Unblocks all threads currently blocked
+ * on the specified condition variable @cond. 
+ **/
+int scond_broadcast(scond_t *cond)
+{
+#ifdef USE_WIN32_THREADS
+   
+   /* remember: we currently have mutex */
+   if(cond->waiters == 0) return 0;
+   
+   /* awaken everything which is currently queued up */
+   if(cond->wakens == 0) SetEvent(cond->event);
+   cond->wakens = cond->waiters;
+
+   /* Since there is now at least one pending waken, the potato must be in play */
+   SetEvent(cond->hot_potato); 
+
+   return 0;
+#else
+   return pthread_cond_broadcast(&cond->cond);
+#endif
+}
+
+/**
+ * scond_signal:
+ * @cond                    : pointer to condition variable object 
+ *
+ * Signal a condition. Unblocks at least one of the threads currently blocked
+ * on the specified condition variable @cond. 
+ **/
+void scond_signal(scond_t *cond)
+{
+#ifdef USE_WIN32_THREADS
+
+   /* remember: we currently have mutex */
+   if(cond->waiters == 0) return;
+ 
+   /* wake up the next thing in the queue */
+   if(cond->wakens == 0) SetEvent(cond->event);
+   cond->wakens++;
+
+   /* Since there is now at least one pending waken, the potato must be in play */
+   SetEvent(cond->hot_potato); 
+
+#else
+   pthread_cond_signal(&cond->cond);
+#endif
+}
+
+/**
+ * scond_wait_timeout:
+ * @cond                    : pointer to condition variable object 
+ * @lock                    : pointer to mutex object 
+ * @timeout_us              : timeout (in microseconds)
+ *
+ * Try to block on a condition variable (i.e. wait on a condition) until
+ * @timeout_us elapses.
+ *
+ * Returns: false (0) if timeout elapses before condition variable is
+ * signaled or broadcast, otherwise true (1).
+ **/
+bool scond_wait_timeout(scond_t *cond, slock_t *lock, int64_t timeout_us)
+{
+#ifdef USE_WIN32_THREADS
+   DWORD ret;
+
+   /* TODO: this is woefully inadequate. It needs to be solved with the newer approach used above */
+   WaitForSingleObject(cond->event, 0);
+   ret = SignalObjectAndWait(lock->lock, cond->event,
+         (DWORD)(timeout_us) / 1000, FALSE);
+
+   slock_lock(lock);
+   return ret == WAIT_OBJECT_0;
+#else
+   int ret;
+   int64_t seconds, remainder;
+   struct timespec now = {0};
+
+#ifdef __MACH__
+   /* OSX doesn't have clock_gettime. */
+   clock_serv_t cclock;
+   mach_timespec_t mts;
+
+   host_get_clock_service(mach_host_self(), CALENDAR_CLOCK, &cclock);
+   clock_get_time(cclock, &mts);
+   mach_port_deallocate(mach_task_self(), cclock);
+   now.tv_sec = mts.tv_sec;
+   now.tv_nsec = mts.tv_nsec;
+#elif defined(__CELLOS_LV2__)
+   sys_time_sec_t s;
+   sys_time_nsec_t n;
+
+   sys_time_get_current_time(&s, &n);
+   now.tv_sec  = s;
+   now.tv_nsec = n;
+#elif defined(__mips__)
+   struct timeval tm;
+
+   gettimeofday(&tm, NULL);
+   now.tv_sec = tm.tv_sec;
+   now.tv_nsec = tm.tv_usec * 1000;
+#elif defined(RETRO_WIN32_USE_PTHREADS)
+   _ftime64_s(&now);
+#elif !defined(GEKKO)
+   /* timeout on libogc is duration, not end time. */
+   clock_gettime(CLOCK_REALTIME, &now);
+#endif
+
+   seconds      = timeout_us / INT64_C(1000000);
+   remainder    = timeout_us % INT64_C(1000000);
+
+   now.tv_sec  += seconds;
+   now.tv_nsec += remainder * INT64_C(1000);
+
+   ret = pthread_cond_timedwait(&cond->cond, &lock->lock, &now);
+   return (ret == 0);
+#endif
 }
\ No newline at end of file