Add jul-app ABI/API and handle registration

[lttng-tools.git] / src / common / sessiond-comm / jul.h

diff --git a/src/common/sessiond-comm/jul.h b/src/common/sessiond-comm/jul.h
new file mode 100644 (file)
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--- /dev/null
+++ b/src/common/sessiond-comm/jul.h
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2013 - David Goulet <dgoulet@efficios.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License, version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 51
+ * Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef _JUL_COMM
+#define _JUL_COMM
+
+#define _GNU_SOURCE
+#include <stdint.h>
+
+#include <lttng/lttng.h>
+
+/*
+ * Command value pass in the header.
+ */
+enum lttcomm_jul_command {
+       JUL_CMD_LIST       = 1,
+       JUL_CMD_ENABLE     = 2,
+       JUL_CMD_DISABLE    = 3,
+};
+
+/*
+ * Return code from the Java agent.
+ */
+enum lttcomm_jul_ret_code {
+       JUL_RET_CODE_SUCCESS      = 1,
+       JUL_RET_CODE_INVALID      = 2,
+       JUL_RET_CODE_UNKNOWN_NAME = 3,
+};
+
+/*
+ * JUL application communication header.
+ */
+struct lttcomm_jul_hdr {
+       uint64_t data_size;             /* data size following this header */
+       uint32_t cmd;                   /* Enum of JUL command. */
+       uint32_t cmd_version;   /* command version */
+} LTTNG_PACKED;
+
+/*
+ * Enable event command payload.
+ */
+struct lttcomm_jul_enable {
+       char name[LTTNG_SYMBOL_NAME_LEN];
+} LTTNG_PACKED;
+
+/*
+ * Disable event command payload.
+ */
+struct lttcomm_jul_disable {
+       char name[LTTNG_SYMBOL_NAME_LEN];
+} LTTNG_PACKED;
+
+/*
+ * Generic reply coming from the Java Agent.
+ */
+struct lttcomm_jul_generic_reply {
+       uint32_t ret_code;
+} LTTNG_PACKED;
+
+/*
+ * List command reply header.
+ */
+struct lttcomm_jul_list_reply_hdr {
+       uint32_t ret_code;
+       uint32_t data_size;
+} LTTNG_PACKED;
+
+/*
+ * List command reply payload coming from the Java Agent.
+ */
+struct lttcomm_jul_list_reply {
+       uint32_t nb_event;
+       /* List of event name each of them ending by a NULL byte. */
+       char payload[];
+} LTTNG_PACKED;
+
+#endif /* _JUL_COMM */