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libgralloc: Map buffers during registration

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Map the gralloc buffer during the register_buffer phase. This allows
the clients to obtain the virtual address without the need to call an
additional mmap.

Change-Id: I9377584ee564ad5113fd353b727793f16d7b9b94
This commit is contained in:
Naomi Luis 2011-11-20 00:21:11 -08:00
parent 1b5f80522b
commit 09367ef6e8
1 changed files with 15 additions and 1 deletions
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16
libgralloc/mapper.cpp
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@ -133,6 +133,13 @@ int gralloc_register_buffer(gralloc_module_t const* module,
private_handle_t* hnd = (private_handle_t*)handle;
if (hnd->pid != getpid()) {
hnd->base = 0;
void *vaddr;
int err = gralloc_map(module, handle, &vaddr);
if (err) {
LOGE("%s: gralloc_map failed", __FUNCTION__);
return err;
}
hnd->lockState = 0;
hnd->writeOwner = 0;
// Reset the genlock private fd flag in the handle
@ -141,11 +148,18 @@ int gralloc_register_buffer(gralloc_module_t const* module,
// Check if there is a valid lock attached to the handle.
if (-1 == hnd->genlockHandle) {
LOGE("%s: the lock is invalid.", __FUNCTION__);
gralloc_unmap(module, handle);
hnd->base = 0;
return -EINVAL;
}
// Attach the genlock handle
return genlock_attach_lock((native_handle_t *)handle);
if (GENLOCK_FAILURE == genlock_attach_lock((native_handle_t *)handle)) {
LOGE("%s: genlock_attach_lock failed", __FUNCTION__);
gralloc_unmap(module, handle);
hnd->base = 0;
return -EINVAL;
}
}
return 0;
}