root
# Anything that can grow the stack can acquire STACKGROW.
# (Most higher layers imply STACKGROW, like MALLOC.)
< STACKGROW
# Below STACKGROW is the stack allocator/copying implementation.
< gscan;
gscan < stackpool;
gscan < stackLarge;
# Generally, hchan must be acquired before gscan. But in one case,
# where we suspend a G and then shrink its stack, syncadjustsudogs
# can acquire hchan locks while holding gscan. To allow this case,

REGISTER_NO_GRADIENT_OP("QueueDequeueUpTo");
REGISTER_NO_GRADIENT_OP("QueueClose");
REGISTER_NO_GRADIENT_OP("QueueSize");
REGISTER_NO_GRADIENT_OP("Stack");
REGISTER_NO_GRADIENT_OP("StackPush");
REGISTER_NO_GRADIENT_OP("StackPop");
REGISTER_NO_GRADIENT_OP("StackClose");
REGISTER_NO_GRADIENT_OP("GetSessionHandle");
REGISTER_NO_GRADIENT_OP("GetSessionHandleV2");
REGISTER_NO_GRADIENT_OP("GetSessionTensor");