/* * * 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. * */ #include #include #include #include #include #include #include #include "src/core/lib/channel/channel_stack.h" #include "src/core/lib/channel/connected_channel.h" #include "src/core/lib/channel/handshaker_registry.h" #include "src/core/lib/debug/trace.h" #include "src/core/lib/http/parser.h" #include "src/core/lib/iomgr/combiner.h" #include "src/core/lib/iomgr/executor.h" #include "src/core/lib/iomgr/iomgr.h" #include "src/core/lib/iomgr/resource_quota.h" #include "src/core/lib/profiling/timers.h" #include "src/core/lib/slice/slice_internal.h" #include "src/core/lib/surface/api_trace.h" #include "src/core/lib/surface/call.h" #include "src/core/lib/surface/channel_init.h" #include "src/core/lib/surface/completion_queue.h" #include "src/core/lib/surface/init.h" #include "src/core/lib/surface/lame_client.h" #include "src/core/lib/surface/server.h" #include "src/core/lib/transport/bdp_estimator.h" #include "src/core/lib/transport/connectivity_state.h" #include "src/core/lib/transport/transport_impl.h" /* (generated) built in registry of plugins */ extern void grpc_register_built_in_plugins(void); #define MAX_PLUGINS 128 static gpr_once g_basic_init = GPR_ONCE_INIT; static gpr_mu g_init_mu; static int g_initializations; static void do_basic_init(void) { gpr_log_verbosity_init(); gpr_mu_init(&g_init_mu); grpc_register_built_in_plugins(); g_initializations = 0; } static bool append_filter(grpc_exec_ctx *exec_ctx, grpc_channel_stack_builder *builder, void *arg) { return grpc_channel_stack_builder_append_filter( builder, (const grpc_channel_filter *)arg, NULL, NULL); } static bool prepend_filter(grpc_exec_ctx *exec_ctx, grpc_channel_stack_builder *builder, void *arg) { return grpc_channel_stack_builder_prepend_filter( builder, (const grpc_channel_filter *)arg, NULL, NULL); } static void register_builtin_channel_init() { grpc_channel_init_register_stage(GRPC_CLIENT_SUBCHANNEL, GRPC_CHANNEL_INIT_BUILTIN_PRIORITY, grpc_add_connected_filter, NULL); grpc_channel_init_register_stage(GRPC_CLIENT_DIRECT_CHANNEL, GRPC_CHANNEL_INIT_BUILTIN_PRIORITY, grpc_add_connected_filter, NULL); grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL, GRPC_CHANNEL_INIT_BUILTIN_PRIORITY, grpc_add_connected_filter, NULL); grpc_channel_init_register_stage(GRPC_CLIENT_LAME_CHANNEL, GRPC_CHANNEL_INIT_BUILTIN_PRIORITY, append_filter, (void *)&grpc_lame_filter); grpc_channel_init_register_stage(GRPC_SERVER_CHANNEL, INT_MAX, prepend_filter, (void *)&grpc_server_top_filter); } typedef struct grpc_plugin { void (*init)(); void (*destroy)(); } grpc_plugin; static grpc_plugin g_all_of_the_plugins[MAX_PLUGINS]; static int g_number_of_plugins = 0; void grpc_register_plugin(void (*init)(void), void (*destroy)(void)) { GRPC_API_TRACE("grpc_register_plugin(init=%p, destroy=%p)", 2, ((void *)(intptr_t)init, (void *)(intptr_t)destroy)); GPR_ASSERT(g_number_of_plugins != MAX_PLUGINS); g_all_of_the_plugins[g_number_of_plugins].init = init; g_all_of_the_plugins[g_number_of_plugins].destroy = destroy; g_number_of_plugins++; } void grpc_init(void) { int i; gpr_once_init(&g_basic_init, do_basic_init); gpr_mu_lock(&g_init_mu); if (++g_initializations == 1) { gpr_time_init(); grpc_slice_intern_init(); grpc_mdctx_global_init(); grpc_channel_init_init(); grpc_register_tracer("api", &grpc_api_trace); grpc_register_tracer("channel", &grpc_trace_channel); grpc_register_tracer("connectivity_state", &grpc_connectivity_state_trace); grpc_register_tracer("channel_stack_builder", &grpc_trace_channel_stack_builder); grpc_register_tracer("http1", &grpc_http1_trace); grpc_register_tracer("queue_pluck", &grpc_cq_pluck_trace); grpc_register_tracer("combiner", &grpc_combiner_trace); grpc_register_tracer("server_channel", &grpc_server_channel_trace); grpc_register_tracer("bdp_estimator", &grpc_bdp_estimator_trace); // Default pluck trace to 1 grpc_register_tracer("queue_timeout", &grpc_cq_event_timeout_trace); // Default timeout trace to 1 grpc_register_tracer("op_failure", &grpc_trace_operation_failures); grpc_register_tracer("resource_quota", &grpc_resource_quota_trace); grpc_register_tracer("call_error", &grpc_call_error_trace); #ifndef NDEBUG grpc_register_tracer("pending_tags", &grpc_trace_pending_tags); #endif grpc_security_pre_init(); grpc_iomgr_init(); grpc_executor_init(); gpr_timers_global_init(); grpc_handshaker_factory_registry_init(); grpc_security_init(); for (i = 0; i < g_number_of_plugins; i++) { if (g_all_of_the_plugins[i].init != NULL) { g_all_of_the_plugins[i].init(); } } /* register channel finalization AFTER all plugins, to ensure that it's run * at the appropriate time */ grpc_register_security_filters(); register_builtin_channel_init(); grpc_tracer_init("GRPC_TRACE"); /* no more changes to channel init pipelines */ grpc_channel_init_finalize(); grpc_iomgr_start(); } gpr_mu_unlock(&g_init_mu); GRPC_API_TRACE("grpc_init(void)", 0, ()); } void grpc_shutdown(void) { int i; GRPC_API_TRACE("grpc_shutdown(void)", 0, ()); grpc_exec_ctx exec_ctx = GRPC_EXEC_CTX_INIT; gpr_mu_lock(&g_init_mu); if (--g_initializations == 0) { grpc_executor_shutdown(&exec_ctx); grpc_iomgr_shutdown(&exec_ctx); gpr_timers_global_destroy(); grpc_tracer_shutdown(); for (i = g_number_of_plugins; i >= 0; i--) { if (g_all_of_the_plugins[i].destroy != NULL) { g_all_of_the_plugins[i].destroy(); } } grpc_mdctx_global_shutdown(&exec_ctx); grpc_handshaker_factory_registry_shutdown(&exec_ctx); grpc_slice_intern_shutdown(); } gpr_mu_unlock(&g_init_mu); grpc_exec_ctx_finish(&exec_ctx); } int grpc_is_initialized(void) { int r; gpr_once_init(&g_basic_init, do_basic_init); gpr_mu_lock(&g_init_mu); r = g_initializations > 0; gpr_mu_unlock(&g_init_mu); return r; }