On Wed, Dec 21, 2016 at 03:17:21PM -0500, Lyude wrote: > This is a simple macro for executing a block of code at the beginning of > intel-gpu-tools, before any tests have been ran. Useful for > initialization of global resources used in IGT libraries. > > Signed-off-by: Lyude <lyude@xxxxxxxxxx> > --- > configure.ac | 1 + > lib/igt_core.h | 13 +++++++++++++ > 2 files changed, 14 insertions(+) > > diff --git a/configure.ac b/configure.ac > index fa31a52..411bfab 100644 > --- a/configure.ac > +++ b/configure.ac > @@ -65,6 +65,7 @@ AC_CHECK_TYPES([sighandler_t],[],[],[AC_INCLUDES_DEFAULT > #include <signal.h>]) > AC_CHECK_FUNCS([swapctl]) > AC_CHECK_FUNCS([asprintf]) > +AX_GCC_FUNC_ATTRIBUTE([constructor]) > > dnl Check for POSIX timers > AC_CHECK_FUNCS(timer_create, [], [ > diff --git a/lib/igt_core.h b/lib/igt_core.h > index 661a634..e76fd5f 100644 > --- a/lib/igt_core.h > +++ b/lib/igt_core.h > @@ -281,6 +281,19 @@ void igt_simple_init_parse_opts(int *argc, char **argv, > } \ > static void igt_tokencat(__real_main, __LINE__)(void) \ > > +/** > + * igt_constructor: > + * > + * Convenience macro to run the provided code block when igt first starts, > + * before any tests have been run. This should be used for parts of the igt > + * library that require initialization of objects with global context. > + * > + * This code block will be executed exactly once. > + */ > +#define igt_constructor \ > + static void __igt_constructor_block(void) __attribute__((constructor)); \ > + static void __igt_constructor_block(void) #define igt_constructor \ __attribute__((constructor)) \ static void igt_tokencat(__igt_constructor, __LINE__)(void) Allows for the flexibility to use multiple constructors from the file. -chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
