Re: [Pixman] [PATCH] Add destructor function to free pixman_implementation_t structs on exit
On 18 September 2017 at 11:46, Siarhei Siamashkawrote: > This fixes a few small memory leaks detected by valgrind. This memory > was allocated once on pixman library load and never freed (but still > was reachable). The fix only helps if the compiler has support for > __attribute__((constructor)) and __attribute__((destructor)) > function attributes. > > Reported-by: Emil Velikov > Signed-off-by: Siarhei Siamashka Looks and works like a charm. FWIW Reviewed-by: Emil Velikov Tested-by: Emil Velikov -Emil ___ Pixman mailing list Pixman@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/pixman
Re: [Pixman] [PATCH] Add destructor function to free pixman_implementation_t structs on exit
On Mon, 18 Sep 2017 13:46:06 +0300 Siarhei Siamashkawrote: > This fixes a few small memory leaks detected by valgrind. This memory > was allocated once on pixman library load and never freed (but still > was reachable). The fix only helps if the compiler has support for > __attribute__((constructor)) and __attribute__((destructor)) > function attributes. > > Reported-by: Emil Velikov > Signed-off-by: Siarhei Siamashka > --- > configure.ac| 1 + > pixman/pixman.c | 12 > 2 files changed, 13 insertions(+) > > diff --git a/configure.ac b/configure.ac > index e833e45..a592cba 100644 > --- a/configure.ac > +++ b/configure.ac > @@ -1047,6 +1047,7 @@ AC_LINK_IFELSE([AC_LANG_SOURCE([[ > */ > static int x = 1; > static void __attribute__((constructor)) constructor_function () { x = 0; } > +static void __attribute__((destructor)) destructor_function () { x = 0; } > int main (void) { return x; } > #else > #error not gcc or gcc version is older than 2.7 > diff --git a/pixman/pixman.c b/pixman/pixman.c > index f932eac..0bcc832 100644 > --- a/pixman/pixman.c > +++ b/pixman/pixman.c > @@ -38,6 +38,18 @@ pixman_constructor (void) > { > global_implementation = _pixman_choose_implementation (); > } > + > +static void __attribute__((destructor)) > +pixman_destructor (void) > +{ > +pixman_implementation_t *imp = global_implementation; > +while (imp) > +{ > + pixman_implementation_t *fallback = imp->fallback; > + free (imp); > + imp = fallback; > +} > +} > #endif > > typedef struct operator_info_t operator_info_t; Hi, looks good to me. Reviewed-by: Pekka Paalanen Didn't test. Thanks, pq pgpdZf9zWK0vN.pgp Description: OpenPGP digital signature ___ Pixman mailing list Pixman@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/pixman
[Pixman] [PATCH] Add destructor function to free pixman_implementation_t structs on exit
This fixes a few small memory leaks detected by valgrind. This memory was allocated once on pixman library load and never freed (but still was reachable). The fix only helps if the compiler has support for __attribute__((constructor)) and __attribute__((destructor)) function attributes. Reported-by: Emil VelikovSigned-off-by: Siarhei Siamashka --- configure.ac| 1 + pixman/pixman.c | 12 2 files changed, 13 insertions(+) diff --git a/configure.ac b/configure.ac index e833e45..a592cba 100644 --- a/configure.ac +++ b/configure.ac @@ -1047,6 +1047,7 @@ AC_LINK_IFELSE([AC_LANG_SOURCE([[ */ static int x = 1; static void __attribute__((constructor)) constructor_function () { x = 0; } +static void __attribute__((destructor)) destructor_function () { x = 0; } int main (void) { return x; } #else #error not gcc or gcc version is older than 2.7 diff --git a/pixman/pixman.c b/pixman/pixman.c index f932eac..0bcc832 100644 --- a/pixman/pixman.c +++ b/pixman/pixman.c @@ -38,6 +38,18 @@ pixman_constructor (void) { global_implementation = _pixman_choose_implementation (); } + +static void __attribute__((destructor)) +pixman_destructor (void) +{ +pixman_implementation_t *imp = global_implementation; +while (imp) +{ + pixman_implementation_t *fallback = imp->fallback; + free (imp); + imp = fallback; +} +} #endif typedef struct operator_info_t operator_info_t; -- 2.7.3 ___ Pixman mailing list Pixman@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/pixman