-/*
- * SPDX-License-Identifier: MIT
- *
- * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- */
+// SPDX-FileCopyrightText: 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+//
+// SPDX-License-Identifier: MIT
#ifndef _LTTNG_UST_TRACEPOINT_H
#define _LTTNG_UST_TRACEPOINT_H
#include <lttng/ust-tracer.h>
#include <lttng/ust-api-compat.h>
+#if (defined(__cplusplus) && (__cplusplus <= 199711L))
+#error "C++11 support is required to build tracepoints and providers as C++"
+#endif
+
#define LTTNG_UST_TRACEPOINT_NAME_LEN_MAX 256
#ifdef LTTNG_UST_HAVE_SDT_INTEGRATION
}
#endif /* #ifdef LTTNG_UST_DEBUG */
+#ifdef LTTNG_UST_ABORT_ON_CRITICAL
+static inline
+bool lttng_ust_tracepoint_logging_abort_on_critical_enabled(void)
+{
+ return true;
+}
+#else /* #ifdef LTTNG_UST_ABORT_ON_CRITICAL */
+static inline
+bool lttng_ust_tracepoint_logging_abort_on_critical_enabled(void)
+{
+ return getenv("LTTNG_UST_ABORT_ON_CRITICAL");
+}
+#endif
+
#define LTTNG_UST_TRACEPOINT_THIS_IP \
({ __label__ here; here: &&here; })
static void
lttng_ust_tracepoints_print_disabled_message(void)
{
- if (!lttng_ust_tracepoint_logging_debug_enabled())
- return;
- fprintf(stderr, "lttng-ust-tracepoint [%ld]: dlopen() failed to find '%s', tracepoints in this binary won't be registered. "
- "(at addr=%p in %s() at " __FILE__ ":" lttng_ust_stringify(__LINE__) ")\n",
- (long) getpid(),
- LTTNG_UST_TRACEPOINT_LIB_SONAME,
- LTTNG_UST_TRACEPOINT_THIS_IP,
- __func__);
+ if (lttng_ust_tracepoint_logging_debug_enabled())
+ fprintf(stderr, "lttng-ust-tracepoint [%ld]: Critical: dlopen() failed to find '%s', tracepoints in this binary won't be registered. "
+ "(at addr=%p in %s() at " __FILE__ ":" lttng_ust_stringify(__LINE__) ")\n",
+ (long) getpid(),
+ LTTNG_UST_TRACEPOINT_LIB_SONAME,
+ LTTNG_UST_TRACEPOINT_THIS_IP,
+ __func__);
+ if (lttng_ust_tracepoint_logging_abort_on_critical_enabled())
+ abort();
}
static void
lttng_ust__tracepoints__init(void)
- lttng_ust_notrace __attribute__((constructor));
+ lttng_ust_notrace __attribute__((constructor(LTTNG_UST_CONSTRUCTOR_PRIO)));
static void
lttng_ust__tracepoints__init(void)
{
static void
lttng_ust__tracepoints__destroy(void)
- lttng_ust_notrace __attribute__((destructor));
+ lttng_ust_notrace __attribute__((destructor(LTTNG_UST_CONSTRUCTOR_PRIO)));
static void
lttng_ust__tracepoints__destroy(void)
{
# endif
#endif /* #if LTTNG_UST_COMPAT_API(0) */
+#if LTTNG_UST_COMPAT_API(0)
+#define tracepoint lttng_ust_tracepoint
+#define do_tracepoint lttng_ust_do_tracepoint
+#define tracepoint_enabled lttng_ust_tracepoint_enabled
+#define TP_ARGS LTTNG_UST_TP_ARGS
+#endif /* #if LTTNG_UST_COMPAT_API(0) */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _LTTNG_UST_TRACEPOINT_H */
+
+/* The following declarations must be outside re-inclusion protection. */
+
#ifdef LTTNG_UST_TRACEPOINT_DEFINE
+#ifndef _LTTNG_UST_TRACEPOINT_DEFINE_ONCE
+#define _LTTNG_UST_TRACEPOINT_DEFINE_ONCE
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
/*
* These weak symbols, the constructor, and destructor take care of
* registering only _one_ instance of the tracepoints per shared-ojbect
*/
#define LTTNG_UST__TP_EXTRACT_STRING(...) #__VA_ARGS__
+#undef LTTNG_UST__DEFINE_TRACEPOINT
#define LTTNG_UST__DEFINE_TRACEPOINT(_provider, _name, _args) \
lttng_ust_tracepoint_validate_name_len(_provider, _name); \
extern int lttng_ust_tracepoint_provider_##_provider \
static void
lttng_ust__tracepoints__ptrs_init(void)
- lttng_ust_notrace __attribute__((constructor));
+ lttng_ust_notrace __attribute__((constructor(LTTNG_UST_CONSTRUCTOR_PRIO)));
static void
lttng_ust__tracepoints__ptrs_init(void)
{
static void
lttng_ust__tracepoints__ptrs_destroy(void)
- lttng_ust_notrace __attribute__((destructor));
+ lttng_ust_notrace __attribute__((destructor(LTTNG_UST_CONSTRUCTOR_PRIO)));
static void
lttng_ust__tracepoints__ptrs_destroy(void)
{
}
}
-#else /* LTTNG_UST_TRACEPOINT_DEFINE */
-
-#define LTTNG_UST__DEFINE_TRACEPOINT(_provider, _name, _args)
-
-#endif /* #else LTTNG_UST_TRACEPOINT_DEFINE */
-
-#if LTTNG_UST_COMPAT_API(0)
-#define tracepoint lttng_ust_tracepoint
-#define do_tracepoint lttng_ust_do_tracepoint
-#define tracepoint_enabled lttng_ust_tracepoint_enabled
-#define TP_ARGS LTTNG_UST_TP_ARGS
-#endif /* #if LTTNG_UST_COMPAT_API(0) */
-
#ifdef __cplusplus
}
#endif
-#endif /* _LTTNG_UST_TRACEPOINT_H */
+#endif /* _LTTNG_UST_TRACEPOINT_DEFINE_ONCE */
-/* The following declarations must be outside re-inclusion protection. */
+#else /* LTTNG_UST_TRACEPOINT_DEFINE */
+
+#undef LTTNG_UST__DEFINE_TRACEPOINT
+#define LTTNG_UST__DEFINE_TRACEPOINT(_provider, _name, _args)
+
+#endif /* #else LTTNG_UST_TRACEPOINT_DEFINE */
/*
* LTTNG_UST_TRACEPOINT_HIDDEN_DEFINITION: Define this before including