/* * * Copyright 2015, Google Inc. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following disclaimer * in the documentation and/or other materials provided with the * distribution. * * Neither the name of Google Inc. nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ #ifndef GRPC_CORE_LIB_SUPPORT_STACK_LOCKFREE_H #define GRPC_CORE_LIB_SUPPORT_STACK_LOCKFREE_H #include <stddef.h> 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 */