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Bug 1402274 - Adjust the shm allocation size in IpcResourceUpdateQueue. r=dvander

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This commit is contained in:
Nicolas Silva 2017-09-28 10:30:31 +02:00
parent e0a0f6988b
commit 3d115cd298
1 changed files with 5 additions and 5 deletions
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10
gfx/layers/wr/IpcResourceUpdateQueue.h
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@ -61,11 +61,11 @@ protected:
class IpcResourceUpdateQueue {
public:
// TODO: 32768 is completely arbitrary, needs some adjustments.
// Because we are using shmems, the size should be a multiple of the page size, and keep in mind
// that each shmem has guard pages, one of which contains meta-data so at least an extra page
// is mapped under the hood (so having a lot of smaller shmems = overhead).
explicit IpcResourceUpdateQueue(ipc::IShmemAllocator* aAllocator, size_t aChunkSize = 32768);
// Because we are using shmems, the size should be a multiple of the page size.
// Each shmem has two guard pages, and the minimum shmem size (at least one Windows)
// is 64k which is already quite large for a lot of the resources we use here.
// So we pick 64k - 2 * 4k = 57344 bytes as the defautl alloc
explicit IpcResourceUpdateQueue(ipc::IShmemAllocator* aAllocator, size_t aChunkSize = 57344);
void AddImage(wr::ImageKey aKey,
const ImageDescriptor& aDescriptor,