From: Christof Schmitt <cs@samba.org>
Date: Fri, 9 Jan 2015 23:17:08 +0000 (-0700)
Subject: debug: Add lttng backend
X-Git-Url: http://git.samba.org/?a=commitdiff_plain;h=1257977125b545ebd0d991e17ffa6afc50c2d907;p=obnox%2Fsamba%2Fsamba-obnox.git

debug: Add lttng backend

Signed-off-by: Christof Schmitt <cs@samba.org>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
---

diff --git a/docs-xml/smbdotconf/logging/logging.xml b/docs-xml/smbdotconf/logging/logging.xml
index 039a9656e88..20842bd9710 100644
--- a/docs-xml/smbdotconf/logging/logging.xml
+++ b/docs-xml/smbdotconf/logging/logging.xml
@@ -30,6 +30,7 @@
     <listitem><para><parameter moreinfo="none">syslog</parameter></para></listitem>
     <listitem><para><parameter moreinfo="none">file</parameter></para></listitem>
     <listitem><para><parameter moreinfo="none">systemd</parameter></para></listitem>
+    <listitem><para><parameter moreinfo="none">lttng</parameter></para></listitem>
   </itemizedlist>
 
 </description>
diff --git a/lib/util/debug.c b/lib/util/debug.c
index 81acbb1b33d..c2781afa390 100644
--- a/lib/util/debug.c
+++ b/lib/util/debug.c
@@ -186,6 +186,15 @@ static void debug_systemd_log(int msg_level,
 }
 #endif
 
+#ifdef HAVE_LTTNG_TRACEF
+#include <lttng/tracef.h>
+static void debug_lttng_log(int msg_level,
+			    const char *msg, const char *msg_no_nl)
+{
+	tracef(msg_no_nl);
+}
+#endif /* WITH_LTTNG_TRACEF */
+
 static struct debug_backend {
 	const char *name;
 	int log_level;
@@ -211,6 +220,14 @@ static struct debug_backend {
 		.log = debug_systemd_log,
 	},
 #endif
+
+#ifdef HAVE_LTTNG_TRACEF
+	{
+		.name = "lttng",
+		.log = debug_lttng_log,
+	},
+#endif
+
 };
 
 static struct debug_backend *debug_find_backend(const char *name)
diff --git a/lib/util/wscript b/lib/util/wscript
index 23716890317..26b5564babc 100644
--- a/lib/util/wscript
+++ b/lib/util/wscript
@@ -9,3 +9,11 @@ def set_options(opt):
     opt.add_option('--without-systemd',
                    help=("Disable systemd integration"),
                    action='store_false', dest='enable_systemd')
+
+    opt.add_option('--with-lttng',
+                   help=("Enable lttng integration"),
+                   action='store_true', dest='enable_lttng')
+
+    opt.add_option('--without-lttng',
+                   help=("Disable lttng integration"),
+                   action='store_false', dest='enable_lttng')
diff --git a/lib/util/wscript_build b/lib/util/wscript_build
index 5f89c83a20b..182f80af35e 100755
--- a/lib/util/wscript_build
+++ b/lib/util/wscript_build
@@ -31,7 +31,7 @@ bld.SAMBA_SUBSYSTEM('close-low-fd',
 bld.SAMBA_LIBRARY('samba-debug',
                   source='debug.c',
                   deps='replace time-basic close-low-fd talloc socket-blocking',
-                  public_deps='systemd-journal',
+                  public_deps='systemd-journal lttng-ust',
                   local_include=False,
                   private_library=True)
 
diff --git a/lib/util/wscript_configure b/lib/util/wscript_configure
index 0153fb8f67f..84c3414334b 100644
--- a/lib/util/wscript_configure
+++ b/lib/util/wscript_configure
@@ -127,3 +127,17 @@ if (conf.CONFIG_SET('HAVE_SYSTEMD_SD_JOURNAL_H') and
 else:
     conf.SET_TARGET_TYPE('systemd-journal', 'EMPTY')
     conf.undefine('HAVE_SYSTEMD_JOURNAL')
+
+if Options.options.enable_lttng != False:
+    conf.check_cfg(package='lttng-ust', args='--cflags --libs',
+                   msg='Checking for lttng-ust', uselib_store="LTTNG-UST")
+    conf.CHECK_HEADERS('lttng/tracef.h', lib='lttng-st')
+    conf.CHECK_LIB('lttng-ust', shlib=True)
+
+if (conf.CONFIG_SET('HAVE_LTTNG_TRACEF_H') and
+    conf.CONFIG_SET('HAVE_LTTNG_UST')):
+    conf.DEFINE('HAVE_LTTNG_TRACEF', '1')
+    conf.env['HAVE_LTTNG_TRACEF'] = True
+else:
+    conf.SET_TARGET_TYPE('lttng-ust', 'EMPTY')
+    conf.undefine('HAVE_LTTNG_TRACEF')