LineageOS/android_hardware_libhardware
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fallback to ashmem when pmem is not availlable

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This commit is contained in:
Mathias Agopian
2009-06-19 16:14:09 -07:00
parent ed93e8b392
commit 31802ca9c0
1 changed files with 17 additions and 2 deletions
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19
modules/gralloc/gralloc.cpp
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@@ -217,17 +217,23 @@ static int gralloc_alloc_buffer(alloc_device_t* dev,
}
if ((flags & private_handle_t::PRIV_FLAGS_USES_PMEM) == 0) {
try_ashmem:
fd = ashmem_create_region("Buffer", size);
if (fd < 0) {
LOGE("couldn't create ashmem (%s)", strerror(-errno));
err = -errno;
}
} else {
private_module_t* m = reinterpret_cast<private_module_t*>(
dev->common.module);
pthread_mutex_lock(&m->lock);
if (m->pmem_master == -1)
if (m->pmem_master == -1) {
err = init_pmem_area(m);
if (err) {
m->pmem_master = err;
}
}
pthread_mutex_unlock(&m->lock);
if (m->pmem_master >= 0) {
@@ -254,6 +260,15 @@ static int gralloc_alloc_buffer(alloc_device_t* dev,
}
//LOGD_IF(!err, "allocating pmem size=%d, offset=%d", size, offset);
}
} else {
if ((usage & GRALLOC_USAGE_HW_2D) == 0) {
// the caller didn't request PMEM, so we can try something else
flags &= ~private_handle_t::PRIV_FLAGS_USES_PMEM;
err = 0;
goto try_ashmem;
} else {
LOGE("couldn't open pmem (%s)", strerror(-errno));
}
}
}