Merge branch 'master' into uv_core_transport

14 files changed, 2903 insertions, 23 deletions

diff --git a/tools/doxygen/Doxyfile.core.internal b/tools/doxygen/Doxyfile.core.internal
index 130ea1d82e..9e6d53c284 100644
--- a/tools/doxygen/Doxyfile.core.internal
+++ b/tools/doxygen/Doxyfile.core.internal
@@ -847,10 +847,10 @@ src/core/lib/iomgr/timer_heap.h \
 src/core/lib/iomgr/timer_uv.h \
 src/core/lib/iomgr/udp_server.h \
 src/core/lib/iomgr/unix_sockets_posix.h \
+src/core/lib/iomgr/wakeup_fd_cv.h \
 src/core/lib/iomgr/wakeup_fd_pipe.h \
 src/core/lib/iomgr/wakeup_fd_posix.h \
 src/core/lib/iomgr/workqueue.h \
-src/core/lib/iomgr/workqueue_posix.h \
 src/core/lib/iomgr/workqueue_uv.h \
 src/core/lib/iomgr/workqueue_windows.h \
 src/core/lib/json/json.h \
@@ -1025,11 +1025,11 @@ src/core/lib/iomgr/timer_uv.c \
 src/core/lib/iomgr/udp_server.c \
 src/core/lib/iomgr/unix_sockets_posix.c \
 src/core/lib/iomgr/unix_sockets_posix_noop.c \
+src/core/lib/iomgr/wakeup_fd_cv.c \
 src/core/lib/iomgr/wakeup_fd_eventfd.c \
 src/core/lib/iomgr/wakeup_fd_nospecial.c \
 src/core/lib/iomgr/wakeup_fd_pipe.c \
 src/core/lib/iomgr/wakeup_fd_posix.c \
-src/core/lib/iomgr/workqueue_posix.c \
 src/core/lib/iomgr/workqueue_uv.c \
 src/core/lib/iomgr/workqueue_windows.c \
 src/core/lib/json/json.c \
diff --git a/tools/gce/create_linux_performance_worker.sh b/tools/gce/create_linux_performance_worker.sh
index c9a0ffa4e1..2c8cf0b96b 100755
--- a/tools/gce/create_linux_performance_worker.sh
+++ b/tools/gce/create_linux_performance_worker.sh
@@ -48,7 +48,8 @@ gcloud compute instances create $INSTANCE_NAME \
     --project="$CLOUD_PROJECT" \
     --zone "$ZONE" \
     --machine-type $MACHINE_TYPE \
-    --image ubuntu-15-10 \
+    --image-project ubuntu-os-cloud \
+    --image-family ubuntu-1604-lts \
     --boot-disk-size 300 \
     --scopes https://www.googleapis.com/auth/bigquery
 
diff --git a/tools/gce/linux_performance_worker_init.sh b/tools/gce/linux_performance_worker_init.sh
index 487672549f..523749ee81 100755
--- a/tools/gce/linux_performance_worker_init.sh
+++ b/tools/gce/linux_performance_worker_init.sh
@@ -90,6 +90,16 @@ sudo apt-get install -y libgflags-dev libgtest-dev libc++-dev clang
 # Python dependencies
 sudo pip install tabulate
 sudo pip install google-api-python-client
+sudo pip install virtualenv
+
+# TODO(jtattermusch): For some reason, building gRPC Python depends on python3.4
+# being installed, but python3.4 is not available on Ubuntu 16.04.
+# Temporarily fixing this by adding a PPA with python3.4, but we should
+# really remove this hack once possible.
+sudo add-apt-repository -y ppa:fkrull/deadsnakes
+sudo apt-get update
+sudo apt-get install -y python3.4 python3.4-dev
+python3.4 -m pip install virtualenv
 
 curl -O https://bootstrap.pypa.io/get-pip.py
 sudo pypy get-pip.py
@@ -105,17 +115,17 @@ nvm install 4 && npm config set cache /tmp/npm-cache
 nvm install 5 && npm config set cache /tmp/npm-cache
 nvm alias default 4
 
-# C# dependencies (http://www.mono-project.com/docs/getting-started/install/linux/#debian-ubuntu-and-derivatives)
-
+# C# mono dependencies (http://www.mono-project.com/docs/getting-started/install/linux/#debian-ubuntu-and-derivatives)
 sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF
 echo "deb http://download.mono-project.com/repo/debian wheezy main" | sudo tee /etc/apt/sources.list.d/mono-xamarin.list
 sudo apt-get update
 sudo apt-get install -y mono-devel nuget
 
-# The version of nuget that is installed using apt-get is too old to download
-# the System.Interactive.Async.3.0.0 C# dependency. Update to the latest version
-# in order to be able download it.
-sudo nuget update -self
+# C# .NET Core dependencies (https://www.microsoft.com/net/core#ubuntu)
+sudo sh -c 'echo "deb [arch=amd64] https://apt-mo.trafficmanager.net/repos/dotnet-release/ xenial main" > /etc/apt/sources.list.d/dotnetdev.list'
+sudo apt-key adv --keyserver apt-mo.trafficmanager.net --recv-keys 417A0893
+sudo apt-get update
+sudo apt-get install -y dotnet-dev-1.0.0-preview2-003131
 
 # Ruby dependencies
 gpg --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3
diff --git a/tools/jenkins/run_sweep_performance.sh b/tools/jenkins/run_sweep_performance.sh
index 6cd7a9129b..3b22e25a45 100755
--- a/tools/jenkins/run_sweep_performance.sh
+++ b/tools/jenkins/run_sweep_performance.sh
@@ -31,6 +31,9 @@
 # This script is invoked by Jenkins and runs full performance test suite.
 set -ex
 
+SERVER_HOST=${1:-grpc-performance-server-32core}
+CLIENT_HOST1=${2:-grpc-performance-client-32core}
+CLIENT_HOST2=${3:-grpc-performance-client2-32core}
 # Enter the gRPC repo root
 cd $(dirname $0)/../..
 
@@ -39,7 +42,7 @@ tools/run_tests/run_performance_tests.py \
     -l c++ \
     --category sweep \
     --bq_result_table performance_test.performance_experiment_32core \
-    --remote_worker_host grpc-performance-server-32core grpc-performance-client-32core grpc-performance-client2-32core \
+    --remote_worker_host ${SERVER_HOST} ${CLIENT_HOST1} ${CLIENT_HOST2} \
     || EXIT_CODE=1
 
 exit $EXIT_CODE
diff --git a/tools/profiling/perf/run_perf_unconstrained.sh b/tools/profiling/perf/run_perf_unconstrained.sh
new file mode 100755
index 0000000000..dbfd2828a8
--- /dev/null
+++ b/tools/profiling/perf/run_perf_unconstrained.sh
@@ -0,0 +1,95 @@
+#!/bin/bash
+# Copyright 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.
+
+# format argument via
+# $ echo '{...}' | python -mjson.tool
+read -r -d '' SCENARIOS_JSON_ARG <<'EOF'
+{
+    "scenarios": [
+        {
+            "benchmark_seconds": 60,
+            "warmup_seconds": 5,
+            "client_config": {
+                "client_channels": 100,
+                "client_type": "ASYNC_CLIENT",
+                "histogram_params": {
+                    "max_possible": 60000000000.0,
+                    "resolution": 0.01
+                },
+                "load_params": {
+                    "closed_loop": {}
+                },
+                "outstanding_rpcs_per_channel": 100,
+                "payload_config": {
+                    "simple_params": {
+                        "req_size": 0,
+                        "resp_size": 0
+                    }
+                },
+                "rpc_type": "UNARY",
+                "security_params": null
+            },
+            "name": "name_goes_here",
+            "num_clients": 1,
+            "num_servers": 1,
+            "server_config": {
+                "security_params": null,
+                "server_type": "ASYNC_SERVER"
+            },
+            "spawn_local_worker_count": -2
+        }
+    ]
+}
+
+EOF
+
+set -ex
+
+cd $(dirname $0)/../../..
+
+CPUS=`python -c 'import multiprocessing; print multiprocessing.cpu_count()'`
+
+# try to use pypy for generating reports
+# each trace dumps 7-8gig of text to disk, and processing this into a report is
+# heavyweight - so any speed boost is worthwhile
+# TODO(ctiller): consider rewriting report generation in C++ for performance
+if which pypy >/dev/null; then
+  PYTHON=pypy
+else
+  PYTHON=python2.7
+fi
+
+export config=mutrace
+
+make CONFIG=$config -j$CPUS qps_json_driver
+
+sudo perf record -F 997 -g bins/$config/qps_json_driver --scenarios_json="$SCENARIOS_JSON_ARG"
+sudo perf report
+
diff --git a/tools/run_tests/filter_pull_request_tests.py b/tools/run_tests/filter_pull_request_tests.py
new file mode 100644
index 0000000000..55dab42f8a
--- /dev/null
+++ b/tools/run_tests/filter_pull_request_tests.py
@@ -0,0 +1,184 @@
+#!/usr/bin/env python2.7
+# 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.
+
+"""Filter out tests based on file differences compared to merge target branch"""
+
+import re
+from subprocess import call, check_output
+
+
+class TestSuite:
+  """
+  Contains tag to identify job as belonging to this test suite and
+  triggers to identify if changed files are relevant
+  """
+  def __init__(self, tags):
+    """
+    Build TestSuite to group tests by their tags
+    :param tag: string used to identify if a job belongs to this TestSuite
+    todo(mattkwong): Change the use of tag because do not want to depend on
+    job.shortname to identify what suite a test belongs to
+    """
+    self.triggers = []
+    self.tags = tags
+
+  def add_trigger(self, trigger):
+    """
+    Add a regex to list of triggers that determine if a changed file should run tests
+    :param trigger: regex matching file relevant to tests
+    """
+    self.triggers.append(trigger)
+
+# Create test suites
+_core_test_suite = TestSuite(['_c_'])
+_cpp_test_suite = TestSuite(['_c++_'])
+_csharp_test_suite = TestSuite(['_csharp_'])
+_node_test_suite = TestSuite(['_node_'])
+_objc_test_suite = TestSuite(['_objc_'])
+_php_test_suite = TestSuite(['_php_', '_php7_'])
+_python_test_suite = TestSuite(['_python_'])
+_ruby_test_suite = TestSuite(['_ruby'])
+_all_test_suites = [_core_test_suite, _cpp_test_suite, _csharp_test_suite,
+                    _node_test_suite, _objc_test_suite, _php_test_suite,
+                    _python_test_suite, _ruby_test_suite]
+
+# Dictionary of whitelistable files where the key is a regex matching changed files
+# and the value is a list of tests that should be run. An empty list means that
+# the changed files should not trigger any tests. Any changed file that does not
+# match any of these regexes will trigger all tests
+_WHITELIST_DICT = {
+  '^templates/.*': [],
+  '^doc/.*': [],
+  '^examples/.*': [],
+  '^summerofcode/.*': [],
+  '.*README.md$': [],
+  '.*LICENSE$': [],
+  '^src/cpp.*': [_cpp_test_suite],
+  '^src/csharp.*': [_csharp_test_suite],
+  '^src/node.*': [_node_test_suite],
+  '^src/objective-c.*': [_objc_test_suite],
+  '^src/php.*': [_php_test_suite],
+  '^src/python.*': [_python_test_suite],
+  '^src/ruby.*': [_ruby_test_suite],
+  '^test/core.*': [_core_test_suite],
+  '^test/cpp.*': [_cpp_test_suite],
+  '^test/distrib/cpp.*': [_cpp_test_suite],
+  '^test/distrib/csharp.*': [_csharp_test_suite],
+  '^test/distrib/node.*': [_node_test_suite],
+  '^test/distrib/php.*': [_php_test_suite],
+  '^test/distrib/python.*': [_python_test_suite],
+  '^test/distrib/ruby.*': [_ruby_test_suite]
+}
+# Add all triggers to their respective test suites
+for trigger, test_suites in _WHITELIST_DICT.iteritems():
+  for test_suite in test_suites:
+    test_suite.add_trigger(trigger)
+
+
+def _get_changed_files(base_branch):
+  """
+  Get list of changed files between current branch and base of target merge branch
+  """
+  # git fetch might need to be called on Jenkins slave
+  # todo(mattkwong): remove or uncomment below after seeing if Jenkins needs this
+  # call(['git', 'fetch'])
+
+  # Get file changes between branch and merge-base of specified branch
+  # Not combined to be Windows friendly
+  base_commit = check_output(["git", "merge-base", base_branch, "HEAD"]).rstrip()
+  return check_output(["git", "diff", base_commit, "--name-only"]).splitlines()
+
+
+def _can_skip_tests(file_names, triggers):
+  """
+  Determines if tests are skippable based on if all files do not match list of regexes
+  :param file_names: list of changed files generated by _get_changed_files()
+  :param triggers: list of regexes matching file name that indicates tests should be run
+  :return: safe to skip tests
+  """
+  for file_name in file_names:
+    if any(re.match(trigger, file_name) for trigger in triggers):
+      return False
+  return True
+
+
+def _remove_irrelevant_tests(tests, tag):
+  """
+  Filters out tests by config or language - will not remove sanitizer tests
+  :param tests: list of all tests generated by run_tests_matrix.py
+  :param tag: string representing language or config to filter - "_(language)_" or "_(config)"
+  :return: list of relevant tests
+  """
+  # todo(mattkwong): find a more reliable way to filter tests - don't use shortname
+  return [test for test in tests if tag not in test.shortname or
+          any(san_tag in test.shortname for san_tag in ['_asan', '_tsan', '_msan'])]
+
+
+def _remove_sanitizer_tests(tests):
+  """
+  Filters out sanitizer tests
+  :param tests: list of all tests generated by run_tests_matrix.py
+  :return: list of relevant tests
+  """
+  # todo(mattkwong): find a more reliable way to filter tests - don't use shortname
+  return [test for test in tests if
+          all(san_tag not in test.shortname for san_tag in ['_asan', '_tsan', '_msan'])]
+
+
+def filter_tests(tests, base_branch):
+  """
+  Filters out tests that are safe to ignore
+  :param tests: list of all tests generated by run_tests_matrix.py
+  :return: list of relevant tests
+  """
+  print("Finding file differences between %s repo and current branch...\n" % base_branch)
+  changed_files = _get_changed_files(base_branch)
+  for changed_file in changed_files:
+    print(changed_file)
+  print
+
+  # Regex that combines all keys in _WHITELIST_DICT
+  all_triggers = "(" + ")|(".join(_WHITELIST_DICT.keys()) + ")"
+  # Check if all tests have to be run
+  for changed_file in changed_files:
+    if not re.match(all_triggers, changed_file):
+      return(tests)
+  # Filter out tests by language
+  for test_suite in _all_test_suites:
+    if _can_skip_tests(changed_files, test_suite.triggers):
+      for tag in test_suite.tags:
+        print("  Filtering %s tests" % tag)
+        tests = _remove_irrelevant_tests(tests, tag)
+  # Sanitizer tests skipped if core and c++ are skipped
+  if _can_skip_tests(changed_files, _cpp_test_suite.triggers + _core_test_suite.triggers):
+    print("  Filtering Sanitizer tests")
+    tests = _remove_sanitizer_tests(tests)
+
+  return tests
diff --git a/tools/run_tests/performance/build_performance.sh b/tools/run_tests/performance/build_performance.sh
index 352c679757..e981cae76b 100755
--- a/tools/run_tests/performance/build_performance.sh
+++ b/tools/run_tests/performance/build_performance.sh
@@ -54,6 +54,9 @@ do
   "go")
     tools/run_tests/performance/build_performance_go.sh
     ;;
+  "csharp")
+    tools/run_tests/run_tests.py -l $language -c $CONFIG --build_only -j 8 --compiler coreclr
+    ;;
   *)
     tools/run_tests/run_tests.py -l $language -c $CONFIG --build_only -j 8
     ;;
diff --git a/tools/run_tests/performance/kill_workers.sh b/tools/run_tests/performance/kill_workers.sh
index 279cc7df29..6e33efad4c 100755
--- a/tools/run_tests/performance/kill_workers.sh
+++ b/tools/run_tests/performance/kill_workers.sh
@@ -40,6 +40,7 @@ killall -9 qps_worker || true
 
 # C#
 ps -C mono -o pid=,cmd= | grep QpsWorker | awk '{print $1}' | xargs kill -9 || true
+ps -C dotnet -o pid=,cmd= | grep QpsWorker | awk '{print $1}' | xargs kill -9 || true
 
 # Ruby
 ps -C ruby -o pid=,cmd= | grep 'qps/worker.rb' | awk '{print $1}' | xargs kill -9 || true
diff --git a/tools/run_tests/performance/run_worker_csharp.sh b/tools/run_tests/performance/run_worker_csharp.sh
index b91df09b42..b4c5ec288f 100755
--- a/tools/run_tests/performance/run_worker_csharp.sh
+++ b/tools/run_tests/performance/run_worker_csharp.sh
@@ -33,6 +33,6 @@ set -ex
 cd $(dirname $0)/../../..
 
 # needed to correctly locate testca
-cd src/csharp/Grpc.IntegrationTesting.QpsWorker/bin/Release
+cd src/csharp/Grpc.IntegrationTesting.QpsWorker/bin/Release/netcoreapp1.0
 
-mono Grpc.IntegrationTesting.QpsWorker.exe $@
+dotnet exec Grpc.IntegrationTesting.QpsWorker.dll $@
diff --git a/tools/run_tests/run_interop_tests.py b/tools/run_tests/run_interop_tests.py
index 389d070d63..29f6533398 100755
--- a/tools/run_tests/run_interop_tests.py
+++ b/tools/run_tests/run_interop_tests.py
@@ -64,8 +64,9 @@ _SKIP_SERVER_COMPRESSION = ['server_compressed_unary',
 
 _SKIP_COMPRESSION = _SKIP_CLIENT_COMPRESSION + _SKIP_SERVER_COMPRESSION
 
-_SKIP_ADVANCED = ['custom_metadata', 'status_code_and_message',
-                  'unimplemented_method']
+_SKIP_ADVANCED_GO = ['custom_metadata', 'unimplemented_method']
+
+_SKIP_ADVANCED = _SKIP_ADVANCED_GO + ['status_code_and_message']
 
 _TEST_TIMEOUT = 3*60
 
@@ -89,10 +90,10 @@ class CXXLanguage:
     return {}
 
   def unimplemented_test_cases(self):
-    return _SKIP_ADVANCED
+    return []
 
   def unimplemented_test_cases_server(self):
-    return _SKIP_ADVANCED
+    return []
 
   def __str__(self):
     return 'c++'
@@ -206,10 +207,10 @@ class GoLanguage:
     return {}
 
   def unimplemented_test_cases(self):
-    return _SKIP_ADVANCED + _SKIP_COMPRESSION
+    return _SKIP_ADVANCED_GO + _SKIP_COMPRESSION
 
   def unimplemented_test_cases_server(self):
-    return _SKIP_ADVANCED + _SKIP_COMPRESSION
+    return _SKIP_ADVANCED_GO + _SKIP_COMPRESSION
 
   def __str__(self):
     return 'go'
diff --git a/tools/run_tests/run_tests.py b/tools/run_tests/run_tests.py
index ee32e1874d..db261d98c2 100755
--- a/tools/run_tests/run_tests.py
+++ b/tools/run_tests/run_tests.py
@@ -69,7 +69,7 @@ _FORCE_ENVIRON_FOR_WRAPPERS = {
 
 
 _POLLING_STRATEGIES = {
-  'linux': ['epoll', 'poll', 'legacy']
+  'linux': ['epoll', 'poll', 'poll-cv', 'legacy']
 }
 
 
diff --git a/tools/run_tests/run_tests_matrix.py b/tools/run_tests/run_tests_matrix.py
index 10ebb3d819..b65010ad8b 100755
--- a/tools/run_tests/run_tests_matrix.py
+++ b/tools/run_tests/run_tests_matrix.py
@@ -36,13 +36,14 @@ import multiprocessing
 import os
 import report_utils
 import sys
+from filter_pull_request_tests import filter_tests
 
 _ROOT = os.path.abspath(os.path.join(os.path.dirname(sys.argv[0]), '../..'))
 os.chdir(_ROOT)
 
 # Set the timeout high to allow enough time for sanitizers and pre-building
 # clang docker.
-_RUNTESTS_TIMEOUT = 2*60*60
+_RUNTESTS_TIMEOUT = 4*60*60
 
 # Number of jobs assigned to each run_tests.py instance
 _INNER_JOBS = 2
@@ -239,6 +240,15 @@ argp.add_argument('--dry_run',
                   action='store_const',
                   const=True,
                   help='Only print what would be run.')
+argp.add_argument('--filter_pr_tests',
+	          default=False,
+		  action='store_const',	
+		  const=True,	  
+		  help='Filters out tests irrelavant to pull request changes.')
+argp.add_argument('--base_branch',
+                  default='origin/master',
+                  type=str,
+                  help='Branch that pull request is requesting to merge into')
 args = argp.parse_args()
 
 extra_args = []
@@ -272,6 +282,19 @@ for job in jobs:
     print '  %s' % job.shortname
 print
 
+if args.filter_pr_tests:
+  print 'IMPORTANT: Test filtering is not active; this is only for testing.'
+  relevant_jobs = filter_tests(jobs, args.base_branch)
+  # todo(mattkwong): add skipped tests to report.xml
+  print
+  if len(relevant_jobs) == len(jobs):
+    print '(TESTING) No tests will be skipped.'
+  else:
+    print '(TESTING) These tests will be skipped:'
+    for job in list(set(jobs) - set(relevant_jobs)):
+      print '  %s' % job.shortname
+  print
+
 if args.dry_run:
   print '--dry_run was used, exiting'
   sys.exit(1)
diff --git a/tools/run_tests/sources_and_headers.json b/tools/run_tests/sources_and_headers.json
index d765d51194..c010449e44 100644
--- a/tools/run_tests/sources_and_headers.json
+++ b/tools/run_tests/sources_and_headers.json
@@ -2084,6 +2084,23 @@
       "gpr", 
       "gpr_test_util", 
       "grpc", 
+      "grpc_test_util"
+    ], 
+    "headers": [], 
+    "is_filegroup": false, 
+    "language": "c", 
+    "name": "wakeup_fd_cv_test", 
+    "src": [
+      "test/core/iomgr/wakeup_fd_cv_test.c"
+    ], 
+    "third_party": false, 
+    "type": "target"
+  }, 
+  {
+    "deps": [
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
       "grpc++", 
       "grpc++_test_util", 
       "grpc_test_util"
@@ -2983,6 +3000,25 @@
       "gpr_test_util", 
       "grpc", 
       "grpc++", 
+      "grpc++_test", 
+      "grpc_test_util"
+    ], 
+    "headers": [], 
+    "is_filegroup": false, 
+    "language": "c++", 
+    "name": "server_context_test_spouse_test", 
+    "src": [
+      "test/cpp/test/server_context_test_spouse_test.cc"
+    ], 
+    "third_party": false, 
+    "type": "target"
+  }, 
+  {
+    "deps": [
+      "gpr", 
+      "gpr_test_util", 
+      "grpc", 
+      "grpc++", 
       "grpc++_test_util", 
       "grpc_test_util"
     ], 
@@ -4929,6 +4965,23 @@
     "type": "lib"
   }, 
   {
+    "deps": [
+      "grpc++"
+    ], 
+    "headers": [
+      "include/grpc++/test/server_context_test_spouse.h"
+    ], 
+    "is_filegroup": false, 
+    "language": "c++", 
+    "name": "grpc++_test", 
+    "src": [
+      "include/grpc++/test/server_context_test_spouse.h", 
+      "src/cpp/test/server_context_test_spouse.cc"
+    ], 
+    "third_party": false, 
+    "type": "lib"
+  }, 
+  {
     "deps": [], 
     "headers": [
       "test/cpp/util/test_config.h"
@@ -6411,10 +6464,10 @@
       "src/core/lib/iomgr/timer_uv.h", 
       "src/core/lib/iomgr/udp_server.h", 
       "src/core/lib/iomgr/unix_sockets_posix.h", 
+      "src/core/lib/iomgr/wakeup_fd_cv.h", 
       "src/core/lib/iomgr/wakeup_fd_pipe.h", 
       "src/core/lib/iomgr/wakeup_fd_posix.h", 
       "src/core/lib/iomgr/workqueue.h", 
-      "src/core/lib/iomgr/workqueue_posix.h", 
       "src/core/lib/iomgr/workqueue_uv.h", 
       "src/core/lib/iomgr/workqueue_windows.h", 
       "src/core/lib/json/json.h", 
@@ -6580,6 +6633,8 @@
       "src/core/lib/iomgr/unix_sockets_posix.c", 
       "src/core/lib/iomgr/unix_sockets_posix.h", 
       "src/core/lib/iomgr/unix_sockets_posix_noop.c", 
+      "src/core/lib/iomgr/wakeup_fd_cv.c", 
+      "src/core/lib/iomgr/wakeup_fd_cv.h", 
       "src/core/lib/iomgr/wakeup_fd_eventfd.c", 
       "src/core/lib/iomgr/wakeup_fd_nospecial.c", 
       "src/core/lib/iomgr/wakeup_fd_pipe.c", 
@@ -6587,8 +6642,6 @@
       "src/core/lib/iomgr/wakeup_fd_posix.c", 
       "src/core/lib/iomgr/wakeup_fd_posix.h", 
       "src/core/lib/iomgr/workqueue.h", 
-      "src/core/lib/iomgr/workqueue_posix.c", 
-      "src/core/lib/iomgr/workqueue_posix.h", 
       "src/core/lib/iomgr/workqueue_uv.c", 
       "src/core/lib/iomgr/workqueue_uv.h", 
       "src/core/lib/iomgr/workqueue_windows.c", 
diff --git a/tools/run_tests/tests.json b/tools/run_tests/tests.json
index 740a991db6..5dd0a5bb07 100644
--- a/tools/run_tests/tests.json
+++ b/tools/run_tests/tests.json
@@ -2208,6 +2208,26 @@
     "ci_platforms": [
       "linux", 
       "mac", 
+      "posix"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "gtest": false, 
+    "language": "c", 
+    "name": "wakeup_fd_cv_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix"
+    ]
+  }, 
+  {
+    "args": [], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
       "posix", 
       "windows"
     ], 
@@ -2816,6 +2836,28 @@
     "ci_platforms": [
       "linux", 
       "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "cpu_cost": 1.0, 
+    "exclude_configs": [], 
+    "exclude_iomgrs": [], 
+    "flaky": false, 
+    "gtest": true, 
+    "language": "c++", 
+    "name": "server_context_test_spouse_test", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ]
+  }, 
+  {
+    "args": [], 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
       "posix"
     ], 
     "cpu_cost": 0.1, 
@@ -65061,6 +65103,28 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/0083d5addbeca55271ed7ef93c8016bf7ca76903"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/00c8446b230bebbae2b473552b174a06b446337a"
     ], 
     "ci_platforms": [
@@ -65325,6 +65389,50 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/07b0bed3226eefac4a84000ec584e4ce06ebf1bf"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/07cec5c8d9c856a910c6fb57da2ae954f44beed0"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/08a8a647b6a8f47ae10852322d14832fc15021f1"
     ], 
     "ci_platforms": [
@@ -65391,6 +65499,28 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/0c27c9999302b39bf2256a90b0cdb767fb2b6fe3"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/0c30868720d5e1a19ff23c53740749c37a43540d"
     ], 
     "ci_platforms": [
@@ -65479,6 +65609,50 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/0d407f099f8418de3dd94bd2146c858a8c6575ad"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/0d4d486aa9fd6e9c10cc9ca8967e922cadddb2fe"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/0d8c547f1d261ba07c2648bae009636c17709600"
     ], 
     "ci_platforms": [
@@ -65501,6 +65675,28 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/0d9ba07b57eb0e076b187c4455f662db085e730b"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/0dd33527db106a3e84172e8f2189734b00ced4ed"
     ], 
     "ci_platforms": [
@@ -65567,6 +65763,28 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/0f6b989cec08ef9da603dc83704d85900bd22f1f"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/0f83cbec19c834f534f353f4fce20c0cd88231f5"
     ], 
     "ci_platforms": [
@@ -65677,6 +65895,28 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/10b25b0726cb6d820165699e5a453691c7a9c343"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/10f5d1937cb068fee7f85e2654be2bfe77498bb9"
     ], 
     "ci_platforms": [
@@ -65765,6 +66005,28 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/1231c6d007d9e43d169122348363e20d9f25ee93"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/1306c4c6ea714d4db0e4d814c944d8d40335e0fa"
     ], 
     "ci_platforms": [
@@ -65787,6 +66049,28 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/13a9b61e431c20734c19bb36d85883b6a501284e"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/1402bbcac6fa24eeb0475250e33f704096e2fb45"
     ], 
     "ci_platforms": [
@@ -65919,6 +66203,28 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/1698ec182fad9d973b84615da3a683ecdf2d0b3b"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/169f579e66b4b8ff423891a40380e648e8d45247"
     ], 
     "ci_platforms": [
@@ -65985,6 +66291,28 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/1859e2ee759e20fe195f67615a1576ce2b7d5bbd"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/1875a4acdcffe505ca92ea8af8d9d6b174736e80"
     ], 
     "ci_platforms": [
@@ -66095,6 +66423,28 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/1a9017db5ad8a9dc6cfe72305da1683a87a73452"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/1aee32faadffa3c2ec508e8fd30006423665488f"
     ], 
     "ci_platforms": [
@@ -66139,6 +66489,50 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/1bd90335afc9e0a1e6a9296e3cc27c03c1201886"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/1be157b0fc79f0e7e1e05dfa3cbbe1ad71528bc2"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/1c222dae4e2cde1fca9f9bf6226200f70d625342"
     ], 
     "ci_platforms": [
@@ -66557,6 +66951,28 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/2185f411bdb1edc610f16ffc86836ae366193e03"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/21a6a133f3d1e06c077032ba56a7df4161f62efe"
     ], 
     "ci_platforms": [
@@ -66601,6 +67017,28 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/22661803bd1c7198df4be6e08924ef6a48af9cd4"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/230527b90b0179139c961aca426187893191fdf2"
     ], 
     "ci_platforms": [
@@ -66887,6 +67325,28 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/2717067bbc0e9bfc1d90d15cddf6154800a25ec6"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/27f37037525aac7a41ffbadd6ce52e5a1851a2b7"
     ], 
     "ci_platforms": [
@@ -66909,6 +67369,28 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/2825cfc19c9371f4fe70851283c68d49470d4d55"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/2862adc802092f1a422416a1666a5142f71d5d7f"
     ], 
     "ci_platforms": [
@@ -67019,6 +67501,28 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/29303c16f3afa18c2c0b84e77e587535a705a74c"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
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     ], 
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@@ -67151,6 +67655,28 @@
   }, 
   {
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+      "test/core/end2end/fuzzers/client_fuzzer_corpus/2b5eb5aac77af905877bd98ec2c4d746b247abb6"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
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+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/2b71439e9ebf611a92386b9f21ad44bde7926184"
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@@ -67283,6 +67809,28 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/2cc43573f271ecd332551c1fb34ebc8645eaefe8"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
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+    "exclude_iomgrs": [
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+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
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+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/2d83097b3cbd2245b085e749fe923fb590790e0c"
     ], 
     "ci_platforms": [
@@ -67415,6 +67963,50 @@
   }, 
   {
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+      "test/core/end2end/fuzzers/client_fuzzer_corpus/2feb41037f5dd34e9f3465a2fbf1a6d355c8ce9d"
+    ], 
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/300998021c7f743ff49d9cc192343ffd43eb47f2"
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+    "ci_platforms": [
+      "linux"
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
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+  {
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       "test/core/end2end/fuzzers/client_fuzzer_corpus/301e10bb6d9f60d91efde4e0c48893203a5b8b88"
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@@ -67459,6 +68051,28 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/310b2aff5e2ec78b6004630bed39d49f8d13bb21"
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
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+    "uses_polling": false
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+  {
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@@ -67899,6 +68513,28 @@
   }, 
   {
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+      "linux"
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
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+    "uses_polling": false
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@@ -67921,6 +68557,50 @@
   }, 
   {
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+    "ci_platforms": [
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
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+  {
+    "args": [
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
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@@ -68053,6 +68733,50 @@
   }, 
   {
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+    "name": "client_fuzzer_one_entry", 
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+      "linux"
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+      "test/core/end2end/fuzzers/client_fuzzer_corpus/407cedf992b14edac6e19f7d440ab73c88e72465"
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       "test/core/end2end/fuzzers/client_fuzzer_corpus/4097094277bc09981f428280fc0cc0f590f20ded"
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@@ -68075,6 +68799,50 @@
   }, 
   {
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+      "test/core/end2end/fuzzers/client_fuzzer_corpus/411966ea7d9164fc432eeab55a55248ad808bb01"
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+    "platforms": [
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@@ -68713,6 +69481,28 @@
   }, 
   {
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+    "platforms": [
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@@ -68779,6 +69569,28 @@
   }, 
   {
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
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@@ -68845,6 +69657,50 @@
   }, 
   {
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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@@ -68955,6 +69811,72 @@
   }, 
   {
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+      "test/core/end2end/fuzzers/client_fuzzer_corpus/560c1057487e6b0d2d457748c3ad8434423eb263"
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
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+      "test/core/end2end/fuzzers/client_fuzzer_corpus/564f203f678fb333c7b1f8f4df79237589ce346d"
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
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+  {
+    "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/56b0ac0636c57838f63415082b3ae2ec7a93f017"
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+    "ci_platforms": [
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+    "exclude_configs": [
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
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+  {
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@@ -69043,6 +69965,28 @@
   }, 
   {
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+    ], 
+    "ci_platforms": [
+      "linux"
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+    "uses_polling": false
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@@ -69087,6 +70031,28 @@
   }, 
   {
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
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+    "uses_polling": false
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@@ -69153,6 +70119,28 @@
   }, 
   {
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
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+    "uses_polling": false
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+  {
+    "args": [
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@@ -69197,6 +70185,28 @@
   }, 
   {
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+      "test/core/end2end/fuzzers/client_fuzzer_corpus/5de72e607205dc17a45df703ec4e9b63c36821ec"
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+      "linux"
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
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@@ -69219,6 +70229,50 @@
   }, 
   {
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+  {
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+      "test/core/end2end/fuzzers/client_fuzzer_corpus/5f247d7b6753f7a8798cf952f49f303c532e017c"
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+  {
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@@ -69351,6 +70405,28 @@
   }, 
   {
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+      "test/core/end2end/fuzzers/client_fuzzer_corpus/63a1cb41d219394c9bab947202921506f3574ad0"
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
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+  {
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@@ -69439,6 +70515,28 @@
   }, 
   {
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+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
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@@ -69461,6 +70559,28 @@
   }, 
   {
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@@ -69549,6 +70669,28 @@
   }, 
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@@ -69571,6 +70713,50 @@
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@@ -69659,6 +70845,28 @@
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@@ -69989,6 +71197,28 @@
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@@ -70077,6 +71307,28 @@
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@@ -70605,6 +71857,50 @@
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@@ -70759,6 +72055,28 @@
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@@ -70781,6 +72099,28 @@
   }, 
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@@ -70913,6 +72253,28 @@
   }, 
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@@ -71001,6 +72363,72 @@
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@@ -71221,6 +72649,50 @@
   }, 
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@@ -71661,6 +73133,28 @@
   }, 
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@@ -71727,6 +73221,28 @@
   }, 
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@@ -71837,6 +73353,28 @@
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@@ -71881,6 +73419,28 @@
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@@ -71991,6 +73551,50 @@
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@@ -72013,6 +73617,28 @@
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@@ -72233,6 +73859,28 @@
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@@ -72255,6 +73903,28 @@
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@@ -72365,6 +74035,28 @@
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@@ -72497,6 +74189,28 @@
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       "test/core/end2end/fuzzers/client_fuzzer_corpus/b39bfaf6a3072d8a50984dcc54967e9246f8d3e5"
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@@ -72519,6 +74233,28 @@
   }, 
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+    "ci_platforms": [
+      "linux"
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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       "test/core/end2end/fuzzers/client_fuzzer_corpus/b3f33b78433af7f607bc99b569b0cef95a1a6ca0"
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@@ -72607,6 +74343,28 @@
   }, 
   {
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+      "linux"
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+    "name": "client_fuzzer_one_entry", 
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@@ -72651,6 +74409,50 @@
   }, 
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+    "name": "client_fuzzer_one_entry", 
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@@ -72805,6 +74607,28 @@
   }, 
   {
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@@ -72981,6 +74805,28 @@
   }, 
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@@ -73201,6 +75047,28 @@
   }, 
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@@ -73223,6 +75091,72 @@
   }, 
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       "test/core/end2end/fuzzers/client_fuzzer_corpus/cbe59c62c6d36c7307c438159327e320cd2fcf57"
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@@ -73333,6 +75267,28 @@
   }, 
   {
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+    "name": "client_fuzzer_one_entry", 
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@@ -73443,6 +75399,28 @@
   }, 
   {
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+    "name": "client_fuzzer_one_entry", 
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       "test/core/end2end/fuzzers/client_fuzzer_corpus/cfa40fccc5ea4304e83ca26f4e567765c2c08627"
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@@ -73509,6 +75487,28 @@
   }, 
   {
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
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       "test/core/end2end/fuzzers/client_fuzzer_corpus/crash-3bd02c98286bfa7be8e13c5500ddb587bba74fbb"
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@@ -73531,6 +75531,28 @@
   }, 
   {
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
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       "test/core/end2end/fuzzers/client_fuzzer_corpus/crash-53e93a1906d8442d058500e7107929cdd3e84ff8"
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@@ -73663,6 +75685,50 @@
   }, 
   {
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+    "name": "client_fuzzer_one_entry", 
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+      "linux"
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+      "test/core/end2end/fuzzers/client_fuzzer_corpus/d17e9507af1855fcf9eca78e2d25c8fb2c40a34c"
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@@ -73905,6 +75971,28 @@
   }, 
   {
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
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@@ -73949,6 +76037,50 @@
   }, 
   {
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
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+      "test/core/end2end/fuzzers/client_fuzzer_corpus/d5a85ad91cfde27a96960b2e783d2ee43c50dcb9"
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+    "name": "client_fuzzer_one_entry", 
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@@ -74037,6 +76169,28 @@
   }, 
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+    "name": "client_fuzzer_one_entry", 
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@@ -74059,6 +76213,28 @@
   }, 
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
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@@ -74125,6 +76301,28 @@
   }, 
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
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@@ -74213,6 +76411,28 @@
   }, 
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+    "name": "client_fuzzer_one_entry", 
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@@ -74565,6 +76785,28 @@
   }, 
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
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@@ -74653,6 +76895,28 @@
   }, 
   {
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+      "test/core/end2end/fuzzers/client_fuzzer_corpus/e4f55281c481484bd9edc28fd10df0c2e0f7d546"
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
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@@ -74763,6 +77027,28 @@
   }, 
   {
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+      "linux"
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+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
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@@ -75115,6 +77401,50 @@
   }, 
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+      "test/core/end2end/fuzzers/client_fuzzer_corpus/f09cd3e3a16658174717668e51e7382e491df1da"
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+    "ci_platforms": [
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+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/f11abb090bae8cdac1f7d9a2e344f2def0e50066"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
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+    "exclude_iomgrs": [
+      "uv"
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+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/f1b9b6803e41beabb1a762d511fc148116e09e78"
     ], 
     "ci_platforms": [
@@ -75225,6 +77555,50 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/f4ae2a2b692bfa83cdde75d007813426e14daef7"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
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+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/f5a629c8fd5720236b66a875e96ea22e29c45965"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
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+    "exclude_iomgrs": [
+      "uv"
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+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/f5b1eab444efb2664a295d4e6d087eb209c0c480"
     ], 
     "ci_platforms": [
@@ -75247,6 +77621,28 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/f6627c55881fe4f0c8e6999980fb226836e6f5ce"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/f66305230042fa83fcd1b98c469d90ffef3ff6da"
     ], 
     "ci_platforms": [
@@ -75335,6 +77731,50 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/f7aeceaf0b6d971038a677994b5d080fa0e18011"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
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+    "exclude_iomgrs": [
+      "uv"
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+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/f803c87a92662898e2c8c847787b56d2c31f63b3"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
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+    "exclude_iomgrs": [
+      "uv"
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+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/f8467d9574de94b9bb904f75a6a7e2405c36f105"
     ], 
     "ci_platforms": [
@@ -75379,6 +77819,28 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/f89ad475ff51a5a9fe18603df833453bed320f36"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
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+    "exclude_iomgrs": [
+      "uv"
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+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/f8fb1348ec3ceeb75c2a03df6a2ead0de6f4127a"
     ], 
     "ci_platforms": [
@@ -75423,6 +77885,28 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/f9583b3a39c1aecbba6e81d71e7fe9b9519c8b08"
+    ], 
+    "ci_platforms": [
+      "linux"
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+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
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+    "exclude_iomgrs": [
+      "uv"
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+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/f96843fdf2d6fdd661c26201d96ae7bec72c6c3d"
     ], 
     "ci_platforms": [
@@ -75665,6 +78149,28 @@
   }, 
   {
     "args": [
+      "test/core/end2end/fuzzers/client_fuzzer_corpus/ffd52d31f9c59a346aa195a683f077dda5ecef6b"
+    ], 
+    "ci_platforms": [
+      "linux"
+    ], 
+    "cpu_cost": 0.1, 
+    "exclude_configs": [
+      "tsan"
+    ], 
+    "exclude_iomgrs": [
+      "uv"
+    ], 
+    "flaky": false, 
+    "language": "c", 
+    "name": "client_fuzzer_one_entry", 
+    "platforms": [
+      "linux"
+    ], 
+    "uses_polling": false
+  }, 
+  {
+    "args": [
       "test/core/end2end/fuzzers/client_fuzzer_corpus/hdr_frame.bin"
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     "ci_platforms": [