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evas: let's use HUGETLB when it makes sense.

This commit is contained in:
Cedric Bail 2014-01-05 22:44:50 +09:00
parent af83a4511c
commit 8c094d1b2d
1 changed files with 4 additions and 2 deletions
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6
src/lib/evas/common/evas_image_main.c
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@ -113,6 +113,7 @@ static inline size_t
_evas_common_rgba_image_surface_size(unsigned int w, unsigned int h, Eina_Bool alpha_only)
{
#define PAGE_SIZE (4 * 1024)
#define HUGE_PAGE_SIZE (2 * 1024 * 1024)
#if defined (HAVE_SYS_MMAN_H) && (!defined (_WIN32))
# define ALIGN_TO_PAGE(Siz) (((Siz / PAGE_SIZE) + (Siz % PAGE_SIZE ? 1 : 0)) * PAGE_SIZE)
#else
@ -136,7 +137,7 @@ static void *
_evas_common_rgba_image_surface_mmap(unsigned int w, unsigned int h, Eina_Bool alpha_only)
{
size_t siz;
void *r;
void *r = MAP_FAILED;
siz = _evas_common_rgba_image_surface_size(w, h, alpha_only);
@ -154,7 +155,8 @@ _evas_common_rgba_image_surface_mmap(unsigned int w, unsigned int h, Eina_Bool a
# endif
#endif
r = mmap(NULL, siz, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB, -1, 0);
if (siz > ((HUGE_PAGE_SIZE * 75) / 100))
r = mmap(NULL, siz, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB, -1, 0);
if (r == MAP_FAILED)
r = mmap(NULL, siz, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (r == MAP_FAILED)