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Introduce IMLIB2_SHM_OPT to enable overriding/testing SHM modes

This commit is contained in:
Kim Woelders 2018-02-05 17:09:47 +01:00
parent c975dab9cd
commit 096316b476
1 changed files with 18 additions and 0 deletions
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18
src/lib/ximage.c
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@ -44,6 +44,9 @@ TmpXError(Display * d, XErrorEvent * ev)
static void
ShmCheck(Display * d)
{
const char *s;
int val;
/* if its there set x_does_shm flag */
if (XShmQueryExtension(d))
{
@ -63,6 +66,21 @@ ShmCheck(Display * d)
else
{
x_does_shm = 0;
return;
}
/* Modify SHM handling if requested */
s = getenv("IMLIB2_SHM_OPT");
if (s)
{
val = atoi(s);
if (val == 0)
x_does_shm = x_does_shm_fd = 0; /* Disable SHM entirely */
else if (val == 1)
x_does_shm_fd = 0; /* Disable SHM-FD */
printf("%s: x_does_shm=%d x_does_shm_fd=%d\n", __func__,
x_does_shm, x_does_shm_fd);
}
}