Rename C++ header files to .hpp

[lttng-tools.git] / src / common / compat / pthread.hpp

diff --git a/src/common/compat/pthread.hpp b/src/common/compat/pthread.hpp
new file mode 100644 (file)
index 0000000..209cd27
--- /dev/null
+++ b/src/common/compat/pthread.hpp
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2020 Michael Jeanson <mjeanson@efficios.com>
+ *
+ * SPDX-License-Identifier: LGPL-2.1-only
+ *
+ */
+
+#ifndef _COMPAT_PTHREAD_H
+#define _COMPAT_PTHREAD_H
+
+#include <pthread.h>
+#include <common/compat/errno.hpp>
+#include <string.h>
+
+#ifdef __FreeBSD__
+#include <pthread_np.h>
+#endif
+
+#define LTTNG_PTHREAD_NAMELEN 16
+
+#if defined(HAVE_PTHREAD_SETNAME_NP_WITH_TID)
+static inline
+int lttng_pthread_setname_np(const char *name)
+{
+       /*
+        * Some implementations don't error out, replicate this behavior for
+        * consistency.
+        */
+       if (strnlen(name, LTTNG_PTHREAD_NAMELEN) >= LTTNG_PTHREAD_NAMELEN) {
+               return ERANGE;
+       }
+
+       return pthread_setname_np(pthread_self(), name);
+}
+#elif defined(HAVE_PTHREAD_SETNAME_NP_WITHOUT_TID)
+static inline
+int lttng_pthread_setname_np(const char *name)
+{
+       return pthread_setname_np(name);
+}
+#elif defined(HAVE_PTHREAD_SET_NAME_NP_WITH_TID)
+
+static inline
+int lttng_pthread_setname_np(const char *name)
+{
+       /* Replicate pthread_setname_np's behavior. */
+       if (strnlen(name, LTTNG_PTHREAD_NAMELEN) >= LTTNG_PTHREAD_NAMELEN) {
+               return ERANGE;
+       }
+
+       pthread_set_name_np(pthread_self(), name);
+       return 0;
+}
+#elif defined(__linux__)
+
+/* Fallback on prtctl on Linux */
+#include <sys/prctl.h>
+
+static inline
+int lttng_pthread_setname_np(const char *name)
+{
+       /* Replicate pthread_setname_np's behavior. */
+       if (strnlen(name, LTTNG_UST_ABI_PROCNAME_LEN) >= LTTNG_UST_ABI_PROCNAME_LEN) {
+               return ERANGE;
+       }
+       return prctl(PR_SET_NAME, name, 0, 0, 0);
+}
+#else
+/*
+ * For platforms without thread name support, do nothing.
+ */
+static inline
+int lttng_pthread_setname_np(const char *name)
+{
+       return -ENOSYS;
+}
+#endif
+
+
+#if defined(HAVE_PTHREAD_GETNAME_NP_WITH_TID)
+static inline
+int lttng_pthread_getname_np(char *name, size_t len)
+{
+       return pthread_getname_np(pthread_self(), name, len);
+}
+#elif defined(HAVE_PTHREAD_GETNAME_NP_WITHOUT_TID)
+static inline
+int lttng_pthread_getname_np(char *name, size_t len)
+{
+       return pthread_getname_np(name, len);
+}
+#elif defined(HAVE_PTHREAD_GET_NAME_NP_WITH_TID)
+static inline
+int lttng_pthread_getname_np(char *name, size_t len)
+{
+       pthread_get_name_np(pthread_self(), name, len);
+       return 0;
+}
+#elif defined(__linux__)
+
+/* Fallback on prtctl on Linux */
+#include <sys/prctl.h>
+
+static inline
+int lttng_pthread_getname_np(char *name, size_t len)
+{
+       return prctl(PR_GET_NAME, name, 0, 0, 0);
+}
+#else
+/*
+ * For platforms without thread name support, do nothing.
+ */
+static inline
+int lttng_pthread_getname_np(char *name, size_t len)
+{
+       return -ENOSYS;
+}
+#endif
+
+#endif /* _COMPAT_PTHREAD_H */