third_party/grpc/src/core/support/stack_lockfree.h

/*
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#ifndef GRPC_INTERNAL_CORE_SUPPORT_STACK_LOCKFREE_H
#define GRPC_INTERNAL_CORE_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_INTERNAL_CORE_SUPPORT_STACK_LOCKFREE_H */