src/core/lib/channel/context.h

/*
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#ifndef GRPC_CORE_LIB_CHANNEL_CONTEXT_H
#define GRPC_CORE_LIB_CHANNEL_CONTEXT_H

/// Call object context pointers.

/// Call context is represented as an array of \a grpc_call_context_elements.
/// This enum represents the indexes into the array, where each index
/// contains a different type of value.
typedef enum {
  /// Value is either a \a grpc_client_security_context or a
  /// \a grpc_server_security_context.
  GRPC_CONTEXT_SECURITY = 0,

  /// Value is a \a census_context.
  GRPC_CONTEXT_TRACING,

  /// Reserved for traffic_class_context.
  GRPC_CONTEXT_TRAFFIC,

  /// Costs for Load Reporting.
  GRPC_CONTEXT_LR_COST,

  GRPC_CONTEXT_COUNT
} grpc_context_index;

typedef struct {
  void *value;
  void (*destroy)(void *);
} grpc_call_context_element;

#endif /* GRPC_CORE_LIB_CHANNEL_CONTEXT_H */