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drisw: Fix build on Android Nougat, which lacks shm (v2)

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In commit cf54bd5e8, dri_sw_winsys.c began using <sys/shm.h> to support
the new functions putImageShm, getImageShm in DRI_SWRastLoader. But
Android began supporting System V shared memory only in Oreo. Nougat has
no shm headers.

Fix the build by ifdef'ing out the shm code on Nougat.

Fixes: cf54bd5e8 "drisw: use shared memory when possible"
Reviewed-by: Dave Airlie <airlied@redhat.com>
Cc: Marc-André Lureau <marcandre.lureau@gmail.com>
(cherry picked from commit aaa41cd297)
This commit is contained in:
Chad Versace 2018-07-18 17:43:35 -07:00 • committed by Andres Gomez
parent 3c3589a0ba
commit fdbbe4c50c
1 changed files with 11 additions and 0 deletions
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11
src/gallium/winsys/sw/dri/dri_sw_winsys.c
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@ -26,8 +26,12 @@
*
**************************************************************************/
#if !defined(ANDROID) || ANDROID_API_LEVEL >= 26
/* Android's libc began supporting shm in Oreo */
#define HAVE_SHM
#include <sys/ipc.h>
#include <sys/shm.h>
#endif
#include "pipe/p_compiler.h"
#include "pipe/p_format.h"
@ -83,6 +87,7 @@ dri_sw_is_displaytarget_format_supported( struct sw_winsys *ws,
return TRUE;
}
#ifdef HAVE_SHM
static char *
alloc_shm(struct dri_sw_displaytarget *dri_sw_dt, unsigned size)
{
@ -101,6 +106,7 @@ alloc_shm(struct dri_sw_displaytarget *dri_sw_dt, unsigned size)
return addr;
}
#endif
static struct sw_displaytarget *
dri_sw_displaytarget_create(struct sw_winsys *winsys,
@ -131,8 +137,11 @@ dri_sw_displaytarget_create(struct sw_winsys *winsys,
size = dri_sw_dt->stride * nblocksy;
dri_sw_dt->shmid = -1;
#ifdef HAVE_SHM
if (ws->lf->put_image_shm)
dri_sw_dt->data = alloc_shm(dri_sw_dt, size);
#endif
if(!dri_sw_dt->data)
dri_sw_dt->data = align_malloc(size, alignment);
@ -156,8 +165,10 @@ dri_sw_displaytarget_destroy(struct sw_winsys *ws,
struct dri_sw_displaytarget *dri_sw_dt = dri_sw_displaytarget(dt);
if (dri_sw_dt->shmid >= 0) {
#ifdef HAVE_SHM
shmdt(dri_sw_dt->data);
shmctl(dri_sw_dt->shmid, IPC_RMID, 0);
#endif
} else {
align_free(dri_sw_dt->data);
}