basic profiling

1 files changed, 52 insertions, 0 deletions

diff --git a/frontend/pcnt.h b/frontend/pcnt.h
new file mode 100644
index 0000000..57bc88a
--- /dev/null
+++ b/frontend/pcnt.h
@@ -0,0 +1,52 @@
+
+enum pcounters {
+	PCNT_ALL,
+	PCNT_GPU,
+	PCNT_SPU,
+	PCNT_CNT
+};
+
+extern unsigned int pcounters[PCNT_CNT];
+extern unsigned int pcounter_starts[PCNT_CNT];
+
+#define pcnt_start(id) \
+	pcounter_starts[id] = pcnt_get()
+
+#define pcnt_end(id) \
+	pcounters[id] += pcnt_get() - pcounter_starts[id]
+
+void pcnt_hook_plugins(void);
+
+static inline void pcnt_print(float fps)
+{
+	unsigned int total, gpu, spu, rem;
+	int i;
+
+	for (i = 0; i < PCNT_CNT; i++)
+		pcounters[i] >>= 10;
+
+	total = pcounters[PCNT_ALL];
+	gpu = pcounters[PCNT_GPU];
+	spu = pcounters[PCNT_SPU];
+	rem = total - gpu - spu;
+	if (!total)
+		total++;
+
+	printf("%2.1f %6u %6u %6u (%2d %2d %2d)\n", fps, gpu, spu, rem,
+		gpu * 100 / total, spu * 100 / total, rem * 100 / total);
+
+	memset(pcounters, 0, sizeof(pcounters));
+}
+
+static inline unsigned int pcnt_get(void)
+{
+	unsigned int val;
+#ifdef __ARM_ARCH_7A__
+	__asm__ volatile("mrc p15, 0, %0, c9, c13, 0"
+			 : "=r"(val));
+#else
+	val = 0;
+#endif
+	return val;
+}
+