X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=markers-userspace%2Fmarker-lib.c;h=b2165b8b7ac542a86f4da1399a1be0c0a6bda1b1;hb=ae40690b4e49e10908cc6320e1c875b56cb2eb9d;hp=da5bcaa33802bbc2c9ae6acbf5d73f295eb26fa4;hpb=99c5a0863a248fe49e6fb0463e0661673f1c8f67;p=lttv.git

diff --git a/markers-userspace/marker-lib.c b/markers-userspace/marker-lib.c
index da5bcaa3..b2165b8b 100644
--- a/markers-userspace/marker-lib.c
+++ b/markers-userspace/marker-lib.c
@@ -1,5 +1,13 @@
 
 #include "marker.h"
+#include <stdio.h>
+#include <errno.h>
+
+__attribute__ ((visibility ("protected")))
+extern struct marker __start___markers[];
+
+__attribute__ ((visibility ("protected")))
+extern struct marker __stop___markers[];
 
 /**
  * __mark_empty_function - Empty probe callback
@@ -13,6 +21,7 @@
  * though the function pointer change and the marker enabling are two distinct
  * operations that modifies the execution flow of preemptible code.
  */
+__attribute__ ((visibility ("protected")))
 void __mark_empty_function(void *probe_private, void *call_private,
 	const char *fmt, va_list *args)
 {
@@ -26,9 +35,58 @@ void __mark_empty_function(void *probe_private, void *call_private,
  * @...:  Variable argument list.
  *
  */
+__attribute__ ((visibility ("protected")))
 void marker_probe_cb(const struct marker *mdata, void *call_private,
 	const char *fmt, ...)
 {
+	char buf[PAGE_SIZE];
+	va_list ap;
+
+	va_start(ap, fmt);
+	vsnprintf(buf, PAGE_SIZE-1, fmt, ap);
+	sys_trace(0, 0, buf);
+	va_end(ap);
+}
+
+//FIXME : imv_read won't work with optimized immediate values.
+//will need to issue one sys_marker call for each immediate value.
+__attribute__ ((visibility ("protected")))
+void testip(void)
+{
+	printf("addr : %p\n", __builtin_return_address(0));
+}
+
+__attribute__((constructor, visibility ("protected")))
+void marker_init(void)
+{
+	struct marker *iter;
+	int ret;
 
+	printf("Marker section : from %p to %p (init)\n",
+		__start___markers, __stop___markers);
+	testip();
+	for (iter = __start___markers; iter < __stop___markers; iter++) {
+		printf("Marker : %s\n", iter->name);
+		ret = sys_marker(iter->name, iter->format,
+			&imv_read(iter->state), 1);
+		if (ret)
+			perror("Error connecting markers");
+	}
+}
+
+__attribute__((destructor, visibility ("protected")))
+void marker_fini(void)
+{
+	struct marker *iter;
+	int ret;
 
+	printf("Marker section : from %p to %p (fini)\n",
+		__start___markers, __stop___markers);
+	for (iter = __start___markers; iter < __stop___markers; iter++) {
+		printf("Marker : %s\n", iter->name);
+		ret = sys_marker(iter->name, iter->format,
+			&imv_read(iter->state), 0);
+		if (ret)
+			perror("Error disconnecting markers");
+	}
 }