From a4710a090d595e49ce5a4771c0b50c7d8aec21a5 Mon Sep 17 00:00:00 2001 From: Ken Payson Date: Mon, 10 Jul 2017 16:49:59 -0700 Subject: Revert "Remove lockfree-stack implementation that is no longer used" This reverts commit 3d04e025bcffd1e583d502de4ee26625ea866b21. --- src/core/lib/support/stack_lockfree.h | 38 +++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 src/core/lib/support/stack_lockfree.h (limited to 'src/core/lib/support/stack_lockfree.h') diff --git a/src/core/lib/support/stack_lockfree.h b/src/core/lib/support/stack_lockfree.h new file mode 100644 index 0000000000..6324211b72 --- /dev/null +++ b/src/core/lib/support/stack_lockfree.h @@ -0,0 +1,38 @@ +/* + * + * Copyright 2015 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +#ifndef GRPC_CORE_LIB_SUPPORT_STACK_LOCKFREE_H +#define GRPC_CORE_LIB_SUPPORT_STACK_LOCKFREE_H + +#include + +typedef struct gpr_stack_lockfree gpr_stack_lockfree; + +/* This stack must specify the maximum number of entries to track. + The current implementation only allows up to 65534 entries */ +gpr_stack_lockfree *gpr_stack_lockfree_create(size_t entries); +void gpr_stack_lockfree_destroy(gpr_stack_lockfree *stack); + +/* Pass in a valid entry number for the next stack entry */ +/* Returns 1 if this is the first element on the stack, 0 otherwise */ +int gpr_stack_lockfree_push(gpr_stack_lockfree *, int entry); + +/* Returns -1 on empty or the actual entry number */ +int gpr_stack_lockfree_pop(gpr_stack_lockfree *stack); + +#endif /* GRPC_CORE_LIB_SUPPORT_STACK_LOCKFREE_H */ -- cgit v1.2.3