Remove gettid warning

[lttng-ust.git] / liblttng-ust / compat.h

diff --git a/liblttng-ust/compat.h b/liblttng-ust/compat.h
index 8ee4470a0b381289986e48742274fa287d835e1a..2690a7607ded20571f96cb79a417c9c3be0cb0e8 100644 (file)
--- a/liblttng-ust/compat.h
+++ b/liblttng-ust/compat.h
@@ -2,29 +2,62 @@
 #define _UST_COMPAT_H
 
 /*
- * Copyright (C) 2011   Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+ * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
  *
- * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
- * OR IMPLIED.  ANY USE IS AT YOUR OWN RISK.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; only
+ * version 2.1 of the License.
  *
- * Permission is hereby granted to use or copy this program
- * for any purpose,  provided the above notices are retained on all copies.
- * Permission to modify the code and to distribute modified code is granted,
- * provided the above notices are retained, and a notice that the code was
- * modified is included with the above copyright notice.
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#include <sys/syscall.h>
+/*
+ * lttng_ust_getprocname.
+ */
+#ifdef __linux__
+
+#include <sys/prctl.h>
+
+#define LTTNG_UST_PROCNAME_LEN 17
 
-#ifdef __UCLIBC__
-#define __getcpu(cpu, node, cache)     syscall(__NR_getcpu, cpu, node, cache)
 static inline
-int sched_getcpu(void)
+void lttng_ust_getprocname(char *name)
 {
-       int c, s;
+       (void) prctl(PR_GET_NAME, (unsigned long) name, 0, 0, 0);
+}
+
+#elif defined(__FreeBSD__)
+#include <stdlib.h>
+#include <string.h>
 
-       s = __getcpu(&c, NULL, NULL);
-       return (s == -1) ? s : c;
+/*
+ * Limit imposed by Linux UST-sessiond ABI.
+ */
+#define LTTNG_UST_PROCNAME_LEN 17
+
+/*
+ * Acts like linux prctl, the string is not necessarily 0-terminated if
+ * 16-byte long.
+ */
+static inline
+void lttng_ust_getprocname(char *name)
+{
+       const char *bsd_name;
+
+       bsd_name = getprogname();
+       if (!bsd_name)
+               name[0] = '\0';
+       memcpy(name, bsd_name, LTTNG_UST_PROCNAME_LEN - 1);
 }
-#endif /* __UCLIBC__ */
+
+#endif
+
 #endif /* _UST_COMPAT_H */