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diff --git a/src/vlib/unix/cj.h b/src/vlib/unix/cj.h
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+/*
+ *------------------------------------------------------------------
+ * cj.h
+ *
+ * Copyright (c) 2013 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *------------------------------------------------------------------
+ */
+
+#ifndef __included_cj_h__
+#define __included_cj_h__
+
+typedef struct
+{
+ f64 time;
+ u32 cpu;
+ u32 type;
+ u64 data[2];
+} cj_record_t;
+
+typedef struct
+{
+ volatile u64 tail;
+ cj_record_t *records;
+ u32 num_records;
+ volatile u32 enable;
+
+ vlib_main_t *vlib_main;
+} cj_main_t;
+
+void cj_log (u32 type, void *data0, void *data1);
+
+/*
+ * Supply in application main, so we can log from any library...
+ * Declare a weak reference in the library, off you go.
+ */
+
+#define DECLARE_CJ_GLOBAL_LOG \
+void cj_global_log (unsigned type, void * data0, void * data1) \
+ __attribute__ ((weak)); \
+ \
+unsigned __cj_type; \
+void * __cj_data0; \
+void * __cj_data1; \
+ \
+void \
+cj_global_log (unsigned type, void * data0, void * data1) \
+{ \
+ __cj_type = type; \
+ __cj_data0 = data0; \
+ __cj_data1 = data1; \
+}
+
+#define CJ_GLOBAL_LOG_PROTOTYPE
+void
+cj_global_log (unsigned type, void *data0, void *data1)
+__attribute__ ((weak));
+
+void cj_stop (void);
+
+#endif /* __included_cj_h__ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */