Add benchmarks, change project structure

bench/src/Bench.c

@@ -0,0 +1,112 @@
+#include <BH/Bench.h>
+#include <BH/Timer.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+
+struct BH_Bench
+{
+    struct BH_Bench *next;
+    const char *name;
+    BH_BenchCallback cb;
+    int started;
+    size_t iterations;
+};
+
+
+static BH_Bench *root = NULL;
+static BH_Timer *timer = NULL;
+
+
+static void cleanup(void)
+{
+    BH_Bench *current;
+
+    current = root;
+    while (current)
+    {
+        BH_Bench *next = current->next;
+
+        free(current);
+        current = next;
+    }
+}
+
+
+void BH_BenchAdd(const char *name,
+                 BH_BenchCallback cb)
+{
+    BH_Bench *bench, *current;
+
+    /* Allocate and fill new benchmark entry */
+    bench = malloc(sizeof(*bench));
+    if (!bench)
+        return;
+
+    bench->next = NULL;
+    bench->name = name;
+    bench->cb = cb;
+    bench->started = 0;
+    bench->iterations = 0;
+
+    /* Append benchmark entry */
+    current = root;
+    while (current && current->next)
+        current = current->next;
+
+    if (current)
+        current->next = bench;
+    else
+        root = bench;
+}
+
+
+int BH_BenchIter(BH_Bench *state)
+{
+    if (state->started)
+    {
+        int64_t millis;
+
+        state->iterations++;
+        millis = BH_TimerMilliseconds(timer);
+
+        if (millis > 1000 && state->iterations > 10)
+        {
+            printf("%s\t%f ips\n", state->name, state->iterations / (millis / 1000.0f));
+            return 0;
+        }
+    }
+    else
+    {
+        state->started = 1;
+        BH_TimerRestart(timer);
+    }
+
+    return 1;
+}
+
+
+int BH_BenchRun(void)
+{
+    BH_Bench *current;
+    int result = 0;
+
+    timer = BH_TimerNew();
+    if (!timer)
+    {
+        printf("ERROR: Can't create timer for benchmarks");
+        return -1;
+    }
+
+    printf("Running benchmarks...\n");
+    current = root;
+    while (current)
+    {
+        current->cb(current);
+        current = current->next;
+        fflush(stdout);
+    }
+
+    cleanup();
+    return 0;
+}