Added sac/queue.h, moved timer.h to utl folder, new queue benchmark

benchmarks/queue/Makefile

@@ -0,0 +1,10 @@
+CFLAGS = -Wall -Wextra
+INCLUDE = ../../src
+
+main:
+	gcc queue.c -I $(INCLUDE) $(CFLAGS) -o a.exe -DCMC_QUEUE
+	a.exe
+	gcc queue.c -I $(INCLUDE) $(CFLAGS) -o a.exe -DSAC_QUEUE
+	a.exe
+	gcc queue.c -I $(INCLUDE) $(CFLAGS) -o a.exe -DEXT_QUEUE
+	a.exe

benchmarks/queue/queue.c

@@ -0,0 +1,82 @@
+/**
+ * queue.c
+ *
+ * Creation Date: 24/06/2019
+ *
+ * Authors:
+ * Leonardo Vencovsky (https://github.com/LeoVen)
+ *
+ */
+
+/* Showing off how different queue implementations affect runtime cost */
+
+#include "utl/timer.h"
+#include <stdio.h>
+#include <inttypes.h>
+
+#define MAX 200000
+
+#if defined(CMC_QUEUE)
+#include "cmc/queue.h"
+QUEUE_GENERATE(q, queue, , int)
+#define TARGET "QUEUE"
+#elif defined(SAC_QUEUE)
+#include "sac/queue.h"
+SAC_QUEUE_GENERATE(q, queue, , int, MAX)
+#define TARGET "SAC QUEUE"
+#elif defined(EXT_QUEUE)
+#include "ext/linkedqueue.h"
+LINKEDQUEUE_GENERATE(q, queue, , int)
+#define TARGET "LINKED QUEUE"
+#else
+#error Please define either CMC_QUEUE, SAC_QUEUE or EXT_QUEUE
+#endif
+
+int main(void)
+{
+
+#if defined(CMC_QUEUE)
+    queue *q = q_new(MAX);
+#elif defined(SAC_QUEUE)
+    queue _q = q_new();
+    queue_ptr q = &_q;
+#elif defined(EXT_QUEUE)
+    queue *q = q_new();
+#endif
+
+    size_t sum = 0;
+    int i = 0;
+
+    timer_t timer;
+    TIMER_START(timer);
+
+    while (q_count(q) != MAX)
+    {
+        q_enqueue(q, i++);
+
+        if (i % 10 == 0)
+        {
+            for (size_t i = 0; i < 9; i++)
+            {
+                sum += q_peek(q);
+                q_dequeue(q);
+            }
+        }
+
+    }
+
+    TIMER_STOP(timer);
+    TIMER_CALC(timer);
+
+    printf("----------------------------------------\n");
+    printf("%s\n", TARGET);
+    printf("Execution time: %.0lf milliseconds\n", timer.result);
+    printf("SUM: %" PRIuMAX "\n", sum);
+    printf("----------------------------------------\n");
+
+#if defined(CMC_QUEUE) || defined(EXT_QUEUE)
+    q_free(q);
+#endif
+
+    return 0;
+}