From 8ee1e7b39febc94bf171db876eae9dec473ccf95 Mon Sep 17 00:00:00 2001
From: bparker06 <bparker06@users.noreply.github.com>
Date: Tue, 30 Jul 2019 14:53:03 -0400
Subject: [PATCH] remove rsemaphore (#8645)

---
 Makefile.common                       |   1 -
 griffin/griffin.c                     |   1 -
 libretro-common/rthreads/rsemaphore.c | 116 --------------------------
 3 files changed, 118 deletions(-)
 delete mode 100644 libretro-common/rthreads/rsemaphore.c

diff --git a/Makefile.common b/Makefile.common
index 6e4b08d430..28c8ec8b4a 100644
--- a/Makefile.common
+++ b/Makefile.common
@@ -868,7 +868,6 @@ endif
 
 ifeq ($(HAVE_THREADS), 1)
    OBJ += $(LIBRETRO_COMM_DIR)/rthreads/rthreads.o \
-			 $(LIBRETRO_COMM_DIR)/rthreads/rsemaphore.o \
           gfx/video_thread_wrapper.o \
           audio/audio_thread_wrapper.o
    DEFINES += -DHAVE_THREADS
diff --git a/griffin/griffin.c b/griffin/griffin.c
index 986abcdbe6..cc6c7c7b7a 100644
--- a/griffin/griffin.c
+++ b/griffin/griffin.c
@@ -1159,7 +1159,6 @@ THREAD
 #endif
 
 #include "../libretro-common/rthreads/rthreads.c"
-#include "../libretro-common/rthreads/rsemaphore.c"
 #include "../gfx/video_thread_wrapper.c"
 #include "../audio/audio_thread_wrapper.c"
 #endif
diff --git a/libretro-common/rthreads/rsemaphore.c b/libretro-common/rthreads/rsemaphore.c
deleted file mode 100644
index aa2a285d50..0000000000
--- a/libretro-common/rthreads/rsemaphore.c
+++ /dev/null
@@ -1,116 +0,0 @@
-/*
-  Copyright 2005 Allen B. Downey
-
-    This file contains an example program from The Little Book of
-    Semaphores, available from Green Tea Press, greenteapress.com
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, see http://www.gnu.org/licenses/gpl.html
-    or write to the Free Software Foundation, Inc., 51 Franklin St, 
-    Fifth Floor, Boston, MA  02110-1301  USA
-*/
-
-/*  Code taken from http://greenteapress.com/semaphores/semaphore.c
- *  and changed to use libretro-common's mutexes and conditions.
- */
-
-#include <stdlib.h>
-
-#include <rthreads/rthreads.h>
-#include <rthreads/rsemaphore.h>
-
-struct ssem
-{
-   int value;
-   int wakeups;
-   slock_t *mutex;
-   scond_t *cond;
-};
-
-ssem_t *ssem_new(int value)
-{
-   ssem_t *semaphore = (ssem_t*)calloc(1, sizeof(*semaphore));
-
-   if (!semaphore)
-      goto error;
-   
-   semaphore->value   = value;
-   semaphore->wakeups = 0;
-   semaphore->mutex   = slock_new();
-
-   if (!semaphore->mutex)
-      goto error;
-
-   semaphore->cond = scond_new();
-
-   if (!semaphore->cond)
-      goto error;
-
-   return semaphore;
-
-error:
-   if (semaphore->mutex)
-      slock_free(semaphore->mutex);
-   semaphore->mutex = NULL;
-   if (semaphore)
-      free((void*)semaphore);
-   return NULL;
-}
-
-void ssem_free(ssem_t *semaphore)
-{
-   if (!semaphore)
-      return;
-
-   scond_free(semaphore->cond);
-   slock_free(semaphore->mutex);
-   free((void*)semaphore);
-}
-
-void ssem_wait(ssem_t *semaphore)
-{
-   if (!semaphore)
-      return;
-
-   slock_lock(semaphore->mutex);
-   semaphore->value--;
-
-   if (semaphore->value < 0)
-   {
-      do
-      {
-         scond_wait(semaphore->cond, semaphore->mutex);
-      }while (semaphore->wakeups < 1);
-
-      semaphore->wakeups--;
-   }
-
-   slock_unlock(semaphore->mutex);
-}
-
-void ssem_signal(ssem_t *semaphore)
-{
-   if (!semaphore)
-      return;
-
-   slock_lock(semaphore->mutex);
-   semaphore->value++;
-
-   if (semaphore->value <= 0)
-   {
-      semaphore->wakeups++;
-      scond_signal(semaphore->cond);
-   }
-
-   slock_unlock(semaphore->mutex);
-}