diff options
| -rw-r--r-- | src/core/ext/transport/chttp2/client/chttp2_connector.cc | 12 | ||||
| -rw-r--r-- | src/core/lib/iomgr/tcp_client_custom.cc | 17 | ||||
| -rw-r--r-- | test/core/iomgr/tcp_client_uv_test.cc | 27 | ||||
| -rw-r--r-- | test/core/iomgr/tcp_server_uv_test.cc | 40 |
4 files changed, 62 insertions, 34 deletions
diff --git a/src/core/ext/transport/chttp2/client/chttp2_connector.cc b/src/core/ext/transport/chttp2/client/chttp2_connector.cc index 1e9c5ee4d7..60a32022f5 100644 --- a/src/core/ext/transport/chttp2/client/chttp2_connector.cc +++ b/src/core/ext/transport/chttp2/client/chttp2_connector.cc @@ -212,9 +212,17 @@ static void chttp2_connector_connect(grpc_connector* con, GRPC_CLOSURE_INIT(&c->connected, connected, c, grpc_schedule_on_exec_ctx); GPR_ASSERT(!c->connecting); c->connecting = true; - grpc_tcp_client_connect(&c->connected, &c->endpoint, args->interested_parties, - args->channel_args, &addr, args->deadline); + grpc_closure* closure = &c->connected; + grpc_endpoint** ep = &c->endpoint; gpr_mu_unlock(&c->mu); + // In some implementations, the closure can be flushed before + // grpc_tcp_client_connect and since the closure requires access to c->mu, + // this can result in a deadlock. Refer + // https://github.com/grpc/grpc/issues/16427 + // grpc_tcp_client_connect would fill c->endpoint with proper contents and we + // make sure that we would still exist at that point by taking a ref. + grpc_tcp_client_connect(closure, ep, args->interested_parties, + args->channel_args, &addr, args->deadline); } static const grpc_connector_vtable chttp2_connector_vtable = { diff --git a/src/core/lib/iomgr/tcp_client_custom.cc b/src/core/lib/iomgr/tcp_client_custom.cc index 9389861d07..73344b18d8 100644 --- a/src/core/lib/iomgr/tcp_client_custom.cc +++ b/src/core/lib/iomgr/tcp_client_custom.cc @@ -81,9 +81,8 @@ static void on_alarm(void* acp, grpc_error* error) { } } -static void custom_connect_callback(grpc_custom_socket* socket, - grpc_error* error) { - grpc_core::ExecCtx exec_ctx; +static void custom_connect_callback_internal(grpc_custom_socket* socket, + grpc_error* error) { grpc_custom_tcp_connect* connect = socket->connector; int done; grpc_closure* closure = connect->closure; @@ -100,6 +99,18 @@ static void custom_connect_callback(grpc_custom_socket* socket, GRPC_CLOSURE_SCHED(closure, error); } +static void custom_connect_callback(grpc_custom_socket* socket, + grpc_error* error) { + if (grpc_core::ExecCtx::Get() == nullptr) { + /* If we are being run on a thread which does not have an exec_ctx created + * yet, we should create one. */ + grpc_core::ExecCtx exec_ctx; + custom_connect_callback_internal(socket, error); + } else { + custom_connect_callback_internal(socket, error); + } +} + static void tcp_connect(grpc_closure* closure, grpc_endpoint** ep, grpc_pollset_set* interested_parties, const grpc_channel_args* channel_args, diff --git a/test/core/iomgr/tcp_client_uv_test.cc b/test/core/iomgr/tcp_client_uv_test.cc index ffcc7937c7..27f894e3f3 100644 --- a/test/core/iomgr/tcp_client_uv_test.cc +++ b/test/core/iomgr/tcp_client_uv_test.cc @@ -129,6 +129,7 @@ void test_succeeds(void) { uv_close((uv_handle_t*)svr_handle, close_cb); gpr_mu_unlock(g_mu); + grpc_core::ExecCtx::Get()->Flush(); } void test_fails(void) { @@ -178,6 +179,7 @@ void test_fails(void) { } gpr_mu_unlock(g_mu); + grpc_core::ExecCtx::Get()->Flush(); } static void destroy_pollset(void* p, grpc_error* error) { @@ -186,21 +188,22 @@ static void destroy_pollset(void* p, grpc_error* error) { int main(int argc, char** argv) { grpc_closure destroyed; - grpc_core::ExecCtx exec_ctx; grpc_test_init(argc, argv); grpc_init(); - g_pollset = static_cast<grpc_pollset*>(gpr_malloc(grpc_pollset_size())); - grpc_pollset_init(g_pollset, &g_mu); - - test_succeeds(); - gpr_log(GPR_ERROR, "End of first test"); - test_fails(); - GRPC_CLOSURE_INIT(&destroyed, destroy_pollset, g_pollset, - grpc_schedule_on_exec_ctx); - grpc_pollset_shutdown(g_pollset, &destroyed); - + { + grpc_core::ExecCtx exec_ctx; + g_pollset = static_cast<grpc_pollset*>(gpr_malloc(grpc_pollset_size())); + grpc_pollset_init(g_pollset, &g_mu); + + test_succeeds(); + gpr_log(GPR_ERROR, "End of first test"); + test_fails(); + GRPC_CLOSURE_INIT(&destroyed, destroy_pollset, g_pollset, + grpc_schedule_on_exec_ctx); + grpc_pollset_shutdown(g_pollset, &destroyed); + gpr_free(g_pollset); + } grpc_shutdown(); - gpr_free(g_pollset); return 0; } diff --git a/test/core/iomgr/tcp_server_uv_test.cc b/test/core/iomgr/tcp_server_uv_test.cc index 35d62b51b7..e99fa79bfd 100644 --- a/test/core/iomgr/tcp_server_uv_test.cc +++ b/test/core/iomgr/tcp_server_uv_test.cc @@ -119,6 +119,7 @@ static void test_no_op(void) { grpc_tcp_server* s; GPR_ASSERT(GRPC_ERROR_NONE == grpc_tcp_server_create(NULL, NULL, &s)); grpc_tcp_server_unref(s); + grpc_core::ExecCtx::Get()->Flush(); } static void test_no_op_with_start(void) { @@ -128,6 +129,7 @@ static void test_no_op_with_start(void) { LOG_TEST("test_no_op_with_start"); grpc_tcp_server_start(s, NULL, 0, on_connect, NULL); grpc_tcp_server_unref(s); + grpc_core::ExecCtx::Get()->Flush(); } static void test_no_op_with_port(void) { @@ -147,6 +149,7 @@ static void test_no_op_with_port(void) { port > 0); grpc_tcp_server_unref(s); + grpc_core::ExecCtx::Get()->Flush(); } static void test_no_op_with_port_and_start(void) { @@ -168,6 +171,7 @@ static void test_no_op_with_port_and_start(void) { grpc_tcp_server_start(s, NULL, 0, on_connect, NULL); grpc_tcp_server_unref(s); + grpc_core::ExecCtx::Get()->Flush(); } static void connect_cb(uv_connect_t* req, int status) { @@ -273,7 +277,7 @@ static void test_connect(unsigned n) { GPR_ASSERT(weak_ref.server != NULL); grpc_tcp_server_unref(s); - + grpc_core::ExecCtx::Get()->Flush(); /* Weak ref lost. */ GPR_ASSERT(weak_ref.server == NULL); } @@ -284,25 +288,27 @@ static void destroy_pollset(void* p, grpc_error* error) { int main(int argc, char** argv) { grpc_closure destroyed; - grpc_core::ExecCtx exec_ctx; grpc_test_init(argc, argv); grpc_init(); - g_pollset = static_cast<grpc_pollset*>(gpr_malloc(grpc_pollset_size())); - grpc_pollset_init(g_pollset, &g_mu); - - test_no_op(); - test_no_op_with_start(); - test_no_op_with_port(); - test_no_op_with_port_and_start(); - test_connect(1); - test_connect(10); - - GRPC_CLOSURE_INIT(&destroyed, destroy_pollset, g_pollset, - grpc_schedule_on_exec_ctx); - grpc_pollset_shutdown(g_pollset, &destroyed); - + { + grpc_core::ExecCtx exec_ctx; + g_pollset = static_cast<grpc_pollset*>(gpr_malloc(grpc_pollset_size())); + grpc_pollset_init(g_pollset, &g_mu); + + test_no_op(); + test_no_op_with_start(); + test_no_op_with_port(); + test_no_op_with_port_and_start(); + test_connect(1); + test_connect(10); + + GRPC_CLOSURE_INIT(&destroyed, destroy_pollset, g_pollset, + grpc_schedule_on_exec_ctx); + grpc_pollset_shutdown(g_pollset, &destroyed); + + gpr_free(g_pollset); + } grpc_shutdown(); - gpr_free(g_pollset); return 0; } |