diff options
Diffstat (limited to 'src/core/iomgr/pollset_posix.h')
| -rw-r--r-- | src/core/iomgr/pollset_posix.h | 153 |
1 files changed, 0 insertions, 153 deletions
diff --git a/src/core/iomgr/pollset_posix.h b/src/core/iomgr/pollset_posix.h deleted file mode 100644 index bbedb66b00..0000000000 --- a/src/core/iomgr/pollset_posix.h +++ /dev/null @@ -1,153 +0,0 @@ -/* - * - * 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_INTERNAL_CORE_IOMGR_POLLSET_POSIX_H -#define GRPC_INTERNAL_CORE_IOMGR_POLLSET_POSIX_H - -#include <poll.h> - -#include <grpc/support/sync.h> - -#include "src/core/iomgr/exec_ctx.h" -#include "src/core/iomgr/iomgr.h" -#include "src/core/iomgr/pollset.h" -#include "src/core/iomgr/wakeup_fd_posix.h" - -typedef struct grpc_pollset_vtable grpc_pollset_vtable; - -/* forward declare only in this file to avoid leaking impl details via - pollset.h; real users of grpc_fd should always include 'fd_posix.h' and not - use the struct tag */ -struct grpc_fd; - -typedef struct grpc_cached_wakeup_fd { - grpc_wakeup_fd fd; - struct grpc_cached_wakeup_fd *next; -} grpc_cached_wakeup_fd; - -struct grpc_pollset_worker { - grpc_cached_wakeup_fd *wakeup_fd; - int reevaluate_polling_on_wakeup; - int kicked_specifically; - struct grpc_pollset_worker *next; - struct grpc_pollset_worker *prev; -}; - -struct grpc_pollset { - /* pollsets under posix can mutate representation as fds are added and - removed. - For example, we may choose a poll() based implementation on linux for - few fds, and an epoll() based implementation for many fds */ - const grpc_pollset_vtable *vtable; - gpr_mu mu; - grpc_pollset_worker root_worker; - int in_flight_cbs; - int shutting_down; - int called_shutdown; - int kicked_without_pollers; - grpc_closure *shutdown_done; - grpc_closure_list idle_jobs; - union { - int fd; - void *ptr; - } data; - /* Local cache of eventfds for workers */ - grpc_cached_wakeup_fd *local_wakeup_cache; -}; - -struct grpc_pollset_vtable { - void (*add_fd)(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, - struct grpc_fd *fd, int and_unlock_pollset); - void (*maybe_work_and_unlock)(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, - grpc_pollset_worker *worker, - gpr_timespec deadline, gpr_timespec now); - void (*finish_shutdown)(grpc_pollset *pollset); - void (*destroy)(grpc_pollset *pollset); -}; - -/* Add an fd to a pollset */ -void grpc_pollset_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, - struct grpc_fd *fd); - -/* Returns the fd to listen on for kicks */ -int grpc_kick_read_fd(grpc_pollset *p); -/* Call after polling has been kicked to leave the kicked state */ -void grpc_kick_drain(grpc_pollset *p); - -/* Convert a timespec to milliseconds: - - very small or negative poll times are clamped to zero to do a - non-blocking poll (which becomes spin polling) - - other small values are rounded up to one millisecond - - longer than a millisecond polls are rounded up to the next nearest - millisecond to avoid spinning - - infinite timeouts are converted to -1 */ -int grpc_poll_deadline_to_millis_timeout(gpr_timespec deadline, - gpr_timespec now); - -/* Allow kick to wakeup the currently polling worker */ -#define GRPC_POLLSET_CAN_KICK_SELF 1 -/* Force the wakee to repoll when awoken */ -#define GRPC_POLLSET_REEVALUATE_POLLING_ON_WAKEUP 2 -/* As per grpc_pollset_kick, with an extended set of flags (defined above) - -- mostly for fd_posix's use. */ -void grpc_pollset_kick_ext(grpc_pollset *p, - grpc_pollset_worker *specific_worker, - uint32_t flags); - -/* turn a pollset into a multipoller: platform specific */ -typedef void (*grpc_platform_become_multipoller_type)(grpc_exec_ctx *exec_ctx, - grpc_pollset *pollset, - struct grpc_fd **fds, - size_t fd_count); -extern grpc_platform_become_multipoller_type grpc_platform_become_multipoller; - -void grpc_poll_become_multipoller(grpc_exec_ctx *exec_ctx, - grpc_pollset *pollset, struct grpc_fd **fds, - size_t fd_count); - -/* Return 1 if the pollset has active threads in grpc_pollset_work (pollset must - * be locked) */ -int grpc_pollset_has_workers(grpc_pollset *pollset); - -void grpc_remove_fd_from_all_epoll_sets(int fd); - -/* override to allow tests to hook poll() usage */ -/* NOTE: Any changes to grpc_poll_function must take place when the gRPC - is certainly not doing any polling anywhere. - Otherwise, there might be a race between changing the variable and actually - doing a polling operation */ -typedef int (*grpc_poll_function_type)(struct pollfd *, nfds_t, int); -extern grpc_poll_function_type grpc_poll_function; -extern grpc_wakeup_fd grpc_global_wakeup_fd; - -#endif /* GRPC_INTERNAL_CORE_IOMGR_POLLSET_POSIX_H */ |