From bb430864cb61f5bdb7b3f2a3adef12bf5119110b Mon Sep 17 00:00:00 2001
From: Aaron Helton <aaron@nytework.com>
Date: Sat, 31 Jul 2021 17:50:03 -0400
Subject: [PATCH] Added some timing functionality for convenience

---
 demo/demo.c                        | 48 ++++++++++++++++--------------
 include/EmberLib/Util/EmberTimer.h | 10 +++++++
 src/CMakeLists.txt                 |  9 ++++--
 src/Util/EmberTimer.c              | 27 +++++++++++++++++
 4 files changed, 70 insertions(+), 24 deletions(-)
 create mode 100644 include/EmberLib/Util/EmberTimer.h
 create mode 100644 src/Util/EmberTimer.c

diff --git a/demo/demo.c b/demo/demo.c
index 4a89ad1..895805c 100644
--- a/demo/demo.c
+++ b/demo/demo.c
@@ -6,6 +6,10 @@
 #include <EmberLib/IO/EmberFile.h>
 #include <stdio.h>
 
+/* TEMPORARY */
+#include <stdlib.h>
+#include <time.h>
+
 void print_bitarray(BitArray *array)
 {
     for(uint32 i = 0; i < ebitarray_size(array); i++)
@@ -15,32 +19,32 @@ void print_bitarray(BitArray *array)
     printf("\n");
 }
 
+#include <EmberLib/Util/EmberTimer.h>
 int main(void)
 {
-    BitArray *array = ebitarray_create(32);
-    printf("Current Array: ");
-    print_bitarray(array);
+    for(int i = 0; i < 3; i++)
+    {
+        srand(771996);
 
-    ebitarray_set(array, 1, 1);
-    printf("After setting bit pos 1 to 1: ");
-    print_bitarray(array);
+        double start = get_time();
+        for(int i = 0; i < 10000000; i++)
+        {
+            BitArray *array = ebitarray_create(1024);
 
-    ebitarray_set(array, 1, 0);
-    printf("After setting bit pos 1 to 0: ");
-    print_bitarray(array);
+            // set a random bit some random number of times
+            int times = 100;
+            for(int j = 0; j < times; j++)
+            {
+                uint32 index = rand() % 32;
+                uint8 value = rand() & 1;
+                ebitarray_set(array, index, value);
+            }
 
-    ebitarray_set(array, 1, 20);
-    printf("After setting bit pos 1 to 20: ");
-    print_bitarray(array);
+            ebitarray_destroy(array);
+            array = NULL;
+        }
+        double end = get_time();
 
-    ebitarray_set_range(array, 10, 20, 1);
-    printf("After setting bits 10-20 to 1: ");
-    print_bitarray(array);
-
-    ebitarray_set_range(array, 10, 20, 0);
-    printf("After setting bits 10-20 to 0: ");
-    print_bitarray(array);
-
-    ebitarray_destroy(array);
-    return 0;
+        printf("Elapsed Time: %f\n", end - start);
+    }
 }
diff --git a/include/EmberLib/Util/EmberTimer.h b/include/EmberLib/Util/EmberTimer.h
new file mode 100644
index 0000000..7607503
--- /dev/null
+++ b/include/EmberLib/Util/EmberTimer.h
@@ -0,0 +1,10 @@
+/*
+ * Created by Aaron Helton on 7/31/21.
+ */
+
+#ifndef EMBERLIB_EMBERTIMER_H
+#define EMBERLIB_EMBERTIMER_H
+
+double get_time(void);
+
+#endif//EMBERLIB_EMBERTIMER_H
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index bc3962f..451d6e6 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,13 +1,18 @@
 set(header_path ${CMAKE_CURRENT_SOURCE_DIR}/../include/EmberLib)
+
 set(headers ${CONFIG_HEADER}
     ${header_path}/IO/EmberFile.h
     ${header_path}/Util/EmberString.h
     ${header_path}/Util/EmberList.h
-    ${header_path}/Util/EmberDefines.h)
-set(sources Util/EmberList.c
+    ${header_path}/Util/EmberDefines.h
+    ${header_path}/Util/EmberTimer.h)
+
+set(sources
+    Util/EmberList.c
     Util/EmberString.c
     Util/EmberMath.c
     Util/BitArray.c
+    Util/EmberTimer.c
     IO/EmberFile.c)
 
 add_library(EmberLib STATIC ${headers} ${sources})
diff --git a/src/Util/EmberTimer.c b/src/Util/EmberTimer.c
new file mode 100644
index 0000000..f22d52d
--- /dev/null
+++ b/src/Util/EmberTimer.c
@@ -0,0 +1,27 @@
+/*
+ * Created by Aaron Helton on 7/31/21.
+ */
+
+#include <EmberLib/Util/EmberTimer.h>
+
+#ifdef WIN32
+    #include <windows.h>
+#else
+    #include <sys/time.h>
+    #include <sys/resource.h>
+#endif
+
+double get_time()
+{
+#ifdef WIN32
+    LARGE_INTEGER t, f;
+    QueryPerformanceCounter(&t);
+    QueryPerformanceFrequency(&f);
+    return (double)t.QuadPart/(double)f.QuadPart;
+#else
+    struct timeval t;
+    struct timezone tzp;
+    gettimeofday(&t, &tzp);
+    return (double)t.tv_sec + t.tv_usec*1e-6;
+#endif
+}
\ No newline at end of file