mirror of https://github.com/grpc/grpc.git
Craig Tiller
8 years ago
commit
0d19c67ea9
209 changed files with 5932 additions and 4379 deletions
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gRPC environment variables |
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-------------------------- |
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|
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gRPC C core based implementations (those contained in this repository) expose |
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some configuration as environment variables that can be set. |
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|
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* GRPC_ABORT_ON_LEAKS |
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A debugging aid to cause a call to abort() when gRPC objects are leaked past |
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grpc_shutdown(). Set to 1 to cause the abort, if unset or 0 it does not |
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abort the process. |
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|
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* GRPC_GOOGLE_CREDENTIALS_ENV_VAR |
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The path to find the credentials to use when Google credentials are created |
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|
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* GRPC_SSL_CIPHER_SUITES |
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A colon separated list of cipher suites to use with OpenSSL |
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Defaults to: |
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ECDHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES256-GCM-SHA384 |
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|
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* GRPC_POLL_STRATEGY [posix-style environments only] |
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Declares which polling engines to try when starting gRPC. |
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This is a comma-separated list of engines, which are tried in priority order |
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first -> last. |
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Available polling engines include: |
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- epoll (linux-only) - a polling engine based around the epoll family of |
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system calls |
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- poll - a portable polling engine based around poll(), intended to be a |
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fallback engine when nothing better exists |
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- legacy - the (deprecated) original polling engine for gRPC |
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|
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* GRPC_TRACE |
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A comma separated list of tracers that provide additional insight into how |
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gRPC C core is processing requests via debug logs. Available tracers include: |
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- api - traces api calls to the C core |
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- channel - traces operations on the C core channel stack |
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- combiner - traces combiner lock state |
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- compression - traces compression operations |
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- connectivity_state - traces connectivity state changes to channels |
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- channel_stack_builder - traces information about channel stacks being built |
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- http - traces state in the http2 transport engine |
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- http1 - traces HTTP/1.x operations performed by gRPC |
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- flowctl - traces http2 flow control |
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- op_failure - traces error information when failure is pushed onto a |
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completion queue |
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- pending_tags - [debug builds only] traces still-in-progress tags on |
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completion queues |
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- round_robin - traces the round_robin load balancing policy |
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- glb - traces the grpclb load balancer |
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- queue_pluck |
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- queue_timeout |
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- server_channel - lightweight trace of significant server channel events |
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- secure_endpoint - traces bytes flowing through encrypted channels |
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- transport_security - traces metadata about secure channel establishment |
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- tcp - traces bytes in and out of a channel |
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'all' can additionally be used to turn all traces on. |
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Individual traces can be disabled by prefixing them with '-'. |
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Example: |
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export GRPC_TRACE=all,-pending_tags |
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|
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* GRPC_VERBOSITY |
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Default gRPC logging verbosity - one of: |
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- DEBUG - log all gRPC messages |
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- INFO - log INFO and ERROR message |
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- ERROR - log only errors |
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@ -1,196 +0,0 @@ |
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/*
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* |
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* Copyright 2015, Google Inc. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are |
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* met: |
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* |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* * Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following disclaimer |
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* in the documentation and/or other materials provided with the |
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* distribution. |
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* * Neither the name of Google Inc. nor the names of its |
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* contributors may be used to endorse or promote products derived from |
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* this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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*/ |
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|
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#include <grpc/support/port_platform.h> |
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#ifdef GPR_POSIX_SOCKET |
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#include "src/core/lib/iomgr/workqueue.h" |
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#include <stdio.h> |
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#include <grpc/support/alloc.h> |
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#include <grpc/support/log.h> |
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#include <grpc/support/useful.h> |
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|
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#include "src/core/lib/iomgr/ev_posix.h" |
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#include "src/core/lib/profiling/timers.h" |
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|
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static void on_readable(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error); |
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|
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grpc_error *grpc_workqueue_create(grpc_exec_ctx *exec_ctx, |
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grpc_workqueue **workqueue) { |
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char name[32]; |
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*workqueue = gpr_malloc(sizeof(grpc_workqueue)); |
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gpr_ref_init(&(*workqueue)->refs, 1); |
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gpr_atm_no_barrier_store(&(*workqueue)->state, 1); |
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grpc_error *err = grpc_wakeup_fd_init(&(*workqueue)->wakeup_fd); |
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if (err != GRPC_ERROR_NONE) { |
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gpr_free(*workqueue); |
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return err; |
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} |
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sprintf(name, "workqueue:%p", (void *)(*workqueue)); |
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(*workqueue)->wakeup_read_fd = grpc_fd_create( |
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GRPC_WAKEUP_FD_GET_READ_FD(&(*workqueue)->wakeup_fd), name); |
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gpr_mpscq_init(&(*workqueue)->queue); |
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grpc_closure_init(&(*workqueue)->read_closure, on_readable, *workqueue); |
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grpc_fd_notify_on_read(exec_ctx, (*workqueue)->wakeup_read_fd, |
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&(*workqueue)->read_closure); |
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return GRPC_ERROR_NONE; |
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} |
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|
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static void workqueue_destroy(grpc_exec_ctx *exec_ctx, |
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grpc_workqueue *workqueue) { |
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grpc_fd_shutdown(exec_ctx, workqueue->wakeup_read_fd); |
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} |
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|
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static void workqueue_orphan(grpc_exec_ctx *exec_ctx, |
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grpc_workqueue *workqueue) { |
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if (gpr_atm_full_fetch_add(&workqueue->state, -1) == 1) { |
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workqueue_destroy(exec_ctx, workqueue); |
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} |
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} |
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|
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#ifdef GRPC_WORKQUEUE_REFCOUNT_DEBUG |
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void grpc_workqueue_ref(grpc_workqueue *workqueue, const char *file, int line, |
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const char *reason) { |
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if (workqueue == NULL) return; |
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gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG, "WORKQUEUE:%p ref %d -> %d %s", |
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workqueue, (int)workqueue->refs.count, (int)workqueue->refs.count + 1, |
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reason); |
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gpr_ref(&workqueue->refs); |
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} |
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#else |
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void grpc_workqueue_ref(grpc_workqueue *workqueue) { |
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if (workqueue == NULL) return; |
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gpr_ref(&workqueue->refs); |
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} |
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#endif |
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|
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#ifdef GRPC_WORKQUEUE_REFCOUNT_DEBUG |
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void grpc_workqueue_unref(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue, |
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const char *file, int line, const char *reason) { |
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if (workqueue == NULL) return; |
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gpr_log(file, line, GPR_LOG_SEVERITY_DEBUG, "WORKQUEUE:%p unref %d -> %d %s", |
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workqueue, (int)workqueue->refs.count, (int)workqueue->refs.count - 1, |
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reason); |
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if (gpr_unref(&workqueue->refs)) { |
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workqueue_orphan(exec_ctx, workqueue); |
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} |
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} |
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#else |
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void grpc_workqueue_unref(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue) { |
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if (workqueue == NULL) return; |
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if (gpr_unref(&workqueue->refs)) { |
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workqueue_orphan(exec_ctx, workqueue); |
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} |
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} |
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#endif |
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|
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static void drain(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue) { |
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abort(); |
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} |
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|
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static void wakeup(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue) { |
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GPR_TIMER_MARK("workqueue.wakeup", 0); |
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grpc_error *err = grpc_wakeup_fd_wakeup(&workqueue->wakeup_fd); |
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if (!GRPC_LOG_IF_ERROR("wakeupfd_wakeup", err)) { |
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drain(exec_ctx, workqueue); |
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} |
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} |
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|
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static void on_readable(grpc_exec_ctx *exec_ctx, void *arg, grpc_error *error) { |
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GPR_TIMER_BEGIN("workqueue.on_readable", 0); |
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grpc_workqueue *workqueue = arg; |
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|
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if (error != GRPC_ERROR_NONE) { |
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/* HACK: let wakeup_fd code know that we stole the fd */ |
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workqueue->wakeup_fd.read_fd = 0; |
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grpc_wakeup_fd_destroy(&workqueue->wakeup_fd); |
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grpc_fd_orphan(exec_ctx, workqueue->wakeup_read_fd, NULL, NULL, "destroy"); |
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GPR_ASSERT(gpr_atm_no_barrier_load(&workqueue->state) == 0); |
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gpr_free(workqueue); |
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} else { |
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error = grpc_wakeup_fd_consume_wakeup(&workqueue->wakeup_fd); |
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gpr_mpscq_node *n = gpr_mpscq_pop(&workqueue->queue); |
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if (error == GRPC_ERROR_NONE) { |
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grpc_fd_notify_on_read(exec_ctx, workqueue->wakeup_read_fd, |
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&workqueue->read_closure); |
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} else { |
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/* recurse to get error handling */ |
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on_readable(exec_ctx, arg, error); |
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} |
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if (n == NULL) { |
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/* try again - queue in an inconsistant state */ |
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wakeup(exec_ctx, workqueue); |
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} else { |
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switch (gpr_atm_full_fetch_add(&workqueue->state, -2)) { |
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case 3: // had one count, one unorphaned --> done, unorphaned
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break; |
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case 2: // had one count, one orphaned --> done, orphaned
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workqueue_destroy(exec_ctx, workqueue); |
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break; |
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case 1: |
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case 0: |
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// these values are illegal - representing an already done or
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// deleted workqueue
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GPR_UNREACHABLE_CODE(break); |
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default: |
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// schedule a wakeup since there's more to do
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wakeup(exec_ctx, workqueue); |
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} |
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grpc_closure *cl = (grpc_closure *)n; |
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grpc_error *clerr = cl->error; |
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cl->cb(exec_ctx, cl->cb_arg, clerr); |
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GRPC_ERROR_UNREF(clerr); |
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} |
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} |
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|
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GPR_TIMER_END("workqueue.on_readable", 0); |
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} |
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|
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void grpc_workqueue_enqueue(grpc_exec_ctx *exec_ctx, grpc_workqueue *workqueue, |
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grpc_closure *closure, grpc_error *error) { |
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GPR_TIMER_BEGIN("workqueue.enqueue", 0); |
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gpr_atm last = gpr_atm_full_fetch_add(&workqueue->state, 2); |
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GPR_ASSERT(last & 1); |
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closure->error = error; |
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gpr_mpscq_push(&workqueue->queue, &closure->next_data.atm_next); |
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if (last == 1) { |
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wakeup(exec_ctx, workqueue); |
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} |
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GPR_TIMER_END("workqueue.enqueue", 0); |
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} |
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|
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#endif /* GPR_POSIX_SOCKET */ |
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@ -1,61 +0,0 @@ |
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/*
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* |
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* Copyright 2015, Google Inc. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are |
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* met: |
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* |
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* * 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. |
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* * 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, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
||||
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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* |
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*/ |
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|
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#ifndef GRPC_CORE_LIB_IOMGR_WORKQUEUE_POSIX_H |
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#define GRPC_CORE_LIB_IOMGR_WORKQUEUE_POSIX_H |
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#include "src/core/lib/iomgr/wakeup_fd_posix.h" |
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#include "src/core/lib/support/mpscq.h" |
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struct grpc_fd; |
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struct grpc_workqueue { |
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gpr_refcount refs; |
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gpr_mpscq queue; |
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// state is:
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// lower bit - zero if orphaned
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// other bits - number of items enqueued
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gpr_atm state; |
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grpc_wakeup_fd wakeup_fd; |
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struct grpc_fd *wakeup_read_fd; |
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grpc_closure read_closure; |
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}; |
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/** Create a work queue. Returns an error if creation fails. If creation
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succeeds, sets *workqueue to point to it. */ |
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grpc_error *grpc_workqueue_create(grpc_exec_ctx *exec_ctx, |
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grpc_workqueue **workqueue); |
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#endif /* GRPC_CORE_LIB_IOMGR_WORKQUEUE_POSIX_H */ |
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