Chagne prof_accum_t to counter_accum_t for general purpose.

src/counter.c

@@ -0,0 +1,22 @@
+#define JEMALLOC_COUNTER_C_
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/counter.h"
+
+bool
+counter_accum_init(counter_accum_t *counter, uint64_t interval) {
+#ifndef JEMALLOC_ATOMIC_U64
+	if (malloc_mutex_init(&counter->mtx, "counter_accum",
+	    WITNESS_RANK_COUNTER_ACCUM, malloc_mutex_rank_exclusive)) {
+		return true;
+	}
+	counter->accumbytes = 0;
+#else
+	atomic_store_u64(&counter->accumbytes, 0,
+	    ATOMIC_RELAXED);
+#endif
+	counter->interval = interval;
+
+	return false;
+}