Committing the style.c file

labs/style15.c

+static bool cl_block_try_disable_access(cl_block* block, int discard_data) 
+{  
+    if (!cl_try_lock(&block->writer_lock)) 
+    {    
+        return false;  
+    }  
+    if (!cl_try_lock(&block->reader_lock)) 
+    {   
+        icl_unlock(&block->writer_lock);
+        return false;  
+    }  
+    if (!discard_data && (block->bytes_read != cl_block_get_bytes_committed(block)))
+    {    
+        cl_unlock(&block->reader_lock);
+        cl_unlock(&block->writer_lock);    
+        return false;  
+    }  
+    
+    cl_block_set_bytes_committed(block, 0);  
+    block->bytes_read = 0;  
+
+    return true;
+}
+
+static void cl_block_enable_access(cl_block* block) 
+{  
+    cl_unlock(&block->reader_lock);  
+    cl_unlock(&block->writer_lock);
+}