| /* |
| * |
| * Copyright 2015-2016, 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_SURFACE_COMPLETION_QUEUE_H |
| #define GRPC_CORE_LIB_SURFACE_COMPLETION_QUEUE_H |
| |
| /* Internal API for completion queues */ |
| |
| #include <grpc/grpc.h> |
| #include "src/core/lib/iomgr/pollset.h" |
| |
| extern int grpc_trace_operation_failures; |
| |
| typedef struct grpc_cq_completion { |
| /** user supplied tag */ |
| void *tag; |
| /** done callback - called when this queue element is no longer |
| needed by the completion queue */ |
| void (*done)(grpc_exec_ctx *exec_ctx, void *done_arg, |
| struct grpc_cq_completion *c); |
| void *done_arg; |
| /** next pointer; low bit is used to indicate success or not */ |
| uintptr_t next; |
| } grpc_cq_completion; |
| |
| #ifdef GRPC_CQ_REF_COUNT_DEBUG |
| void grpc_cq_internal_ref(grpc_completion_queue *cc, const char *reason, |
| const char *file, int line); |
| void grpc_cq_internal_unref(grpc_completion_queue *cc, const char *reason, |
| const char *file, int line); |
| #define GRPC_CQ_INTERNAL_REF(cc, reason) \ |
| grpc_cq_internal_ref(cc, reason, __FILE__, __LINE__) |
| #define GRPC_CQ_INTERNAL_UNREF(cc, reason) \ |
| grpc_cq_internal_unref(cc, reason, __FILE__, __LINE__) |
| #else |
| void grpc_cq_internal_ref(grpc_completion_queue *cc); |
| void grpc_cq_internal_unref(grpc_completion_queue *cc); |
| #define GRPC_CQ_INTERNAL_REF(cc, reason) grpc_cq_internal_ref(cc) |
| #define GRPC_CQ_INTERNAL_UNREF(cc, reason) grpc_cq_internal_unref(cc) |
| #endif |
| |
| /* Flag that an operation is beginning: the completion channel will not finish |
| shutdown until a corrensponding grpc_cq_end_* call is made. |
| \a tag is currently used only in debug builds. */ |
| void grpc_cq_begin_op(grpc_completion_queue *cc, void *tag); |
| |
| /* Queue a GRPC_OP_COMPLETED operation; tag must correspond to the tag passed to |
| grpc_cq_begin_op */ |
| void grpc_cq_end_op(grpc_exec_ctx *exec_ctx, grpc_completion_queue *cc, |
| void *tag, grpc_error *error, |
| void (*done)(grpc_exec_ctx *exec_ctx, void *done_arg, |
| grpc_cq_completion *storage), |
| void *done_arg, grpc_cq_completion *storage); |
| |
| grpc_pollset *grpc_cq_pollset(grpc_completion_queue *cc); |
| grpc_completion_queue *grpc_cq_from_pollset(grpc_pollset *ps); |
| |
| void grpc_cq_mark_non_listening_server_cq(grpc_completion_queue *cc); |
| bool grpc_cq_is_non_listening_server_cq(grpc_completion_queue *cc); |
| void grpc_cq_mark_server_cq(grpc_completion_queue *cc); |
| int grpc_cq_is_server_cq(grpc_completion_queue *cc); |
| |
| void grpc_cq_global_init(void); |
| void grpc_cq_global_shutdown(void); |
| |
| #endif /* GRPC_CORE_LIB_SURFACE_COMPLETION_QUEUE_H */ |