* linking the probe statically.
*
* Register refcount is protected by libc dynamic loader mutex.
+ *
+ * Note that when building this code as C++, the definition of constructors
+ * and destructors invoking the registration and unregistration functions
+ * must be performed _after_ the initialization of the probes.
+ *
+ * This is because we rely on the order of initialization of static variables
+ * and anonymous namespaces (their order of declaration) to ensure probes are
+ * fully initialized, see
+ * https://en.cppreference.com/w/cpp/language/initialization. This is especially
+ * important when LTTNG_UST_ALLOCATE_COMPOUND_LITERAL_ON_HEAP is defined as
+ * compound literals are then dynamically initialized.
*/
/* Reset all macros within LTTNG_UST_TRACEPOINT_EVENT */
#include <lttng/ust-tracepoint-event-reset.h>
+
static void
-LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__events_init__, LTTNG_UST_TRACEPOINT_PROVIDER)(void)
- lttng_ust_notrace __attribute__((constructor));
+LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__events_init__, LTTNG_UST_TRACEPOINT_PROVIDER)(void) lttng_ust_notrace;
static void
LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__events_init__, LTTNG_UST_TRACEPOINT_PROVIDER)(void)
{
}
static void
-LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__events_exit__, LTTNG_UST_TRACEPOINT_PROVIDER)(void)
- lttng_ust_notrace __attribute__((destructor));
+LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__events_exit__, LTTNG_UST_TRACEPOINT_PROVIDER)(void) lttng_ust_notrace;
static void
LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__events_exit__, LTTNG_UST_TRACEPOINT_PROVIDER)(void)
{
LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__probe_register_cookie___, LTTNG_UST_TRACEPOINT_PROVIDER) = NULL;
}
+LTTNG_UST_DECLARE_CONSTRUCTOR_DESTRUCTOR(
+ LTTNG_UST_TRACEPOINT_PROVIDER,
+ LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__events_init__, LTTNG_UST_TRACEPOINT_PROVIDER),
+ LTTNG_UST__TP_COMBINE_TOKENS(lttng_ust__events_exit__, LTTNG_UST_TRACEPOINT_PROVIDER),
+ lttng_ust_notrace)
+
/*
* LTTNG_UST_TRACEPOINT_PROVIDER_HIDDEN_DEFINITION: Define this before
* including a tracepoint instrumentation header to hide symbols