diff options
Diffstat (limited to 'src/corelib/global/qtrace_p.h')
| -rw-r--r-- | src/corelib/global/qtrace_p.h | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/src/corelib/global/qtrace_p.h b/src/corelib/global/qtrace_p.h index 3d04a7311d..b72fdd886d 100644 --- a/src/corelib/global/qtrace_p.h +++ b/src/corelib/global/qtrace_p.h @@ -52,11 +52,18 @@ // /* - * The Qt tracepoints API consists of only three macros: + * The Qt tracepoints API consists of only five macros: * * - Q_TRACE(tracepoint, args...) * Fires 'tracepoint' if it is enabled. * + * - Q_TRACE_EXIT(tracepoint, args...) + * Fires 'tracepoint' if it is enabled when the current scope exists. + * + * - Q_TRACE_SCOPE(tracepoint, args...) + * Wrapper around Q_TRACE/_EXIT to trace entry and exit. First it traces + * `${tracepoint}_entry` and then `${tracepoint}_exit` on scope exit. + * * - Q_UNCONDITIONAL_TRACE(tracepoint, args...) * Fires 'tracepoint' unconditionally: no check is performed to query * whether 'tracepoint' is enabled. @@ -110,15 +117,25 @@ */ #include <QtCore/qglobal.h> +#include <QtCore/qscopeguard.h> QT_BEGIN_NAMESPACE #if defined(Q_TRACEPOINT) && !defined(QT_BOOTSTRAPPED) +# define Q_HAS_TRACEPOINTS 1 # define Q_TRACE(x, ...) QtPrivate::trace_ ## x(__VA_ARGS__) +# define Q_TRACE_EXIT(x, ...) \ + const auto qTraceExit_ ## x ## __COUNTER__ = qScopeGuard([&]() { Q_TRACE(x, __VA_ARGS__); }); +# define Q_TRACE_SCOPE(x, ...) \ + Q_TRACE(x ## _entry, __VA_ARGS__); \ + Q_TRACE_EXIT(x ## _exit, __VA_ARGS__); # define Q_UNCONDITIONAL_TRACE(x, ...) QtPrivate::do_trace_ ## x(__VA_ARGS__) # define Q_TRACE_ENABLED(x) QtPrivate::trace_ ## x ## _enabled() #else +# define Q_HAS_TRACEPOINTS 0 # define Q_TRACE(x, ...) +# define Q_TRACE_EXIT(x, ...) +# define Q_TRACE_SCOPE(x, ...) # define Q_UNCONDITIONAL_TRACE(x, ...) # define Q_TRACE_ENABLED(x) false #endif // defined(Q_TRACEPOINT) && !defined(QT_BOOTSTRAPPED) |