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Diffstat (limited to 'src/core/lib/iomgr/pollset_windows.h')
| -rw-r--r-- | src/core/lib/iomgr/pollset_windows.h | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/src/core/lib/iomgr/pollset_windows.h b/src/core/lib/iomgr/pollset_windows.h new file mode 100644 index 0000000000..fa9553ffea --- /dev/null +++ b/src/core/lib/iomgr/pollset_windows.h @@ -0,0 +1,75 @@ +/* + * + * Copyright 2015-2016, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +#ifndef GRPC_CORE_LIB_IOMGR_POLLSET_WINDOWS_H +#define GRPC_CORE_LIB_IOMGR_POLLSET_WINDOWS_H + +#include <grpc/support/sync.h> + +#include "src/core/lib/iomgr/socket_windows.h" + +/* There isn't really any such thing as a pollset under Windows, due to the + nature of the IO completion ports. A Windows "pollset" is merely a mutex + used to synchronize with the IOCP, and workers are condition variables + used to block threads until work is ready. */ + +typedef enum { + GRPC_POLLSET_WORKER_LINK_POLLSET = 0, + GRPC_POLLSET_WORKER_LINK_GLOBAL, + GRPC_POLLSET_WORKER_LINK_TYPES +} grpc_pollset_worker_link_type; + +typedef struct grpc_pollset_worker_link { + struct grpc_pollset_worker *next; + struct grpc_pollset_worker *prev; +} grpc_pollset_worker_link; + +struct grpc_pollset; +typedef struct grpc_pollset grpc_pollset; + +typedef struct grpc_pollset_worker { + gpr_cv cv; + int kicked; + struct grpc_pollset *pollset; + grpc_pollset_worker_link links[GRPC_POLLSET_WORKER_LINK_TYPES]; +} grpc_pollset_worker; + +struct grpc_pollset { + int shutting_down; + int kicked_without_pollers; + int is_iocp_worker; + grpc_pollset_worker root_worker; + grpc_closure *on_shutdown; +}; + +#endif /* GRPC_CORE_LIB_IOMGR_POLLSET_WINDOWS_H */ |