diff options
| -rw-r--r-- | BUILD | 6 | ||||
| -rw-r--r-- | Makefile | 2 | ||||
| -rw-r--r-- | binding.gyp | 1 | ||||
| -rw-r--r-- | build.yaml | 2 | ||||
| -rw-r--r-- | config.m4 | 1 | ||||
| -rw-r--r-- | gRPC.podspec | 3 | ||||
| -rwxr-xr-x | grpc.gemspec | 2 | ||||
| -rw-r--r-- | include/grpc/impl/codegen/port_platform.h | 1 | ||||
| -rw-r--r-- | package.xml | 2 | ||||
| -rw-r--r-- | src/core/lib/iomgr/ev_epoll_linux.c | 1515 | ||||
| -rw-r--r-- | src/core/lib/iomgr/ev_epoll_linux.h | 41 | ||||
| -rw-r--r-- | src/core/lib/iomgr/ev_posix.c | 10 | ||||
| -rw-r--r-- | src/python/grpcio/grpc_core_dependencies.py | 1 | ||||
| -rw-r--r-- | tools/doxygen/Doxyfile.core.internal | 2 | ||||
| -rwxr-xr-x | tools/run_tests/run_tests.py | 4 | ||||
| -rw-r--r-- | tools/run_tests/sources_and_headers.json | 3 | ||||
| -rw-r--r-- | vsprojects/vcxproj/grpc/grpc.vcxproj | 3 | ||||
| -rw-r--r-- | vsprojects/vcxproj/grpc/grpc.vcxproj.filters | 6 | ||||
| -rw-r--r-- | vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj | 3 | ||||
| -rw-r--r-- | vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters | 6 |
20 files changed, 1606 insertions, 8 deletions
@@ -178,6 +178,7 @@ cc_library( "src/core/lib/iomgr/closure.h", "src/core/lib/iomgr/endpoint.h", "src/core/lib/iomgr/endpoint_pair.h", + "src/core/lib/iomgr/ev_epoll_linux.h", "src/core/lib/iomgr/ev_poll_and_epoll_posix.h", "src/core/lib/iomgr/ev_poll_posix.h", "src/core/lib/iomgr/ev_posix.h", @@ -325,6 +326,7 @@ cc_library( "src/core/lib/iomgr/endpoint.c", "src/core/lib/iomgr/endpoint_pair_posix.c", "src/core/lib/iomgr/endpoint_pair_windows.c", + "src/core/lib/iomgr/ev_epoll_linux.c", "src/core/lib/iomgr/ev_poll_and_epoll_posix.c", "src/core/lib/iomgr/ev_poll_posix.c", "src/core/lib/iomgr/ev_posix.c", @@ -895,6 +897,7 @@ cc_library( "src/core/lib/iomgr/closure.h", "src/core/lib/iomgr/endpoint.h", "src/core/lib/iomgr/endpoint_pair.h", + "src/core/lib/iomgr/ev_epoll_linux.h", "src/core/lib/iomgr/ev_poll_and_epoll_posix.h", "src/core/lib/iomgr/ev_poll_posix.h", "src/core/lib/iomgr/ev_posix.h", @@ -1020,6 +1023,7 @@ cc_library( "src/core/lib/iomgr/endpoint.c", "src/core/lib/iomgr/endpoint_pair_posix.c", "src/core/lib/iomgr/endpoint_pair_windows.c", + "src/core/lib/iomgr/ev_epoll_linux.c", "src/core/lib/iomgr/ev_poll_and_epoll_posix.c", "src/core/lib/iomgr/ev_poll_posix.c", "src/core/lib/iomgr/ev_posix.c", @@ -1718,6 +1722,7 @@ objc_library( "src/core/lib/iomgr/endpoint.c", "src/core/lib/iomgr/endpoint_pair_posix.c", "src/core/lib/iomgr/endpoint_pair_windows.c", + "src/core/lib/iomgr/ev_epoll_linux.c", "src/core/lib/iomgr/ev_poll_and_epoll_posix.c", "src/core/lib/iomgr/ev_poll_posix.c", "src/core/lib/iomgr/ev_posix.c", @@ -1926,6 +1931,7 @@ objc_library( "src/core/lib/iomgr/closure.h", "src/core/lib/iomgr/endpoint.h", "src/core/lib/iomgr/endpoint_pair.h", + "src/core/lib/iomgr/ev_epoll_linux.h", "src/core/lib/iomgr/ev_poll_and_epoll_posix.h", "src/core/lib/iomgr/ev_poll_posix.h", "src/core/lib/iomgr/ev_posix.h", @@ -2497,6 +2497,7 @@ LIBGRPC_SRC = \ src/core/lib/iomgr/endpoint.c \ src/core/lib/iomgr/endpoint_pair_posix.c \ src/core/lib/iomgr/endpoint_pair_windows.c \ + src/core/lib/iomgr/ev_epoll_linux.c \ src/core/lib/iomgr/ev_poll_and_epoll_posix.c \ src/core/lib/iomgr/ev_poll_posix.c \ src/core/lib/iomgr/ev_posix.c \ @@ -3098,6 +3099,7 @@ LIBGRPC_UNSECURE_SRC = \ src/core/lib/iomgr/endpoint.c \ src/core/lib/iomgr/endpoint_pair_posix.c \ src/core/lib/iomgr/endpoint_pair_windows.c \ + src/core/lib/iomgr/ev_epoll_linux.c \ src/core/lib/iomgr/ev_poll_and_epoll_posix.c \ src/core/lib/iomgr/ev_poll_posix.c \ src/core/lib/iomgr/ev_posix.c \ diff --git a/binding.gyp b/binding.gyp index 9b4ae5eb42..d9e6fd3339 100644 --- a/binding.gyp +++ b/binding.gyp @@ -581,6 +581,7 @@ 'src/core/lib/iomgr/endpoint.c', 'src/core/lib/iomgr/endpoint_pair_posix.c', 'src/core/lib/iomgr/endpoint_pair_windows.c', + 'src/core/lib/iomgr/ev_epoll_linux.c', 'src/core/lib/iomgr/ev_poll_and_epoll_posix.c', 'src/core/lib/iomgr/ev_poll_posix.c', 'src/core/lib/iomgr/ev_posix.c', diff --git a/build.yaml b/build.yaml index a94fb052a5..85b66d985b 100644 --- a/build.yaml +++ b/build.yaml @@ -174,6 +174,7 @@ filegroups: - src/core/lib/iomgr/closure.h - src/core/lib/iomgr/endpoint.h - src/core/lib/iomgr/endpoint_pair.h + - src/core/lib/iomgr/ev_epoll_linux.h - src/core/lib/iomgr/ev_poll_and_epoll_posix.h - src/core/lib/iomgr/ev_poll_posix.h - src/core/lib/iomgr/ev_posix.h @@ -250,6 +251,7 @@ filegroups: - src/core/lib/iomgr/endpoint.c - src/core/lib/iomgr/endpoint_pair_posix.c - src/core/lib/iomgr/endpoint_pair_windows.c + - src/core/lib/iomgr/ev_epoll_linux.c - src/core/lib/iomgr/ev_poll_and_epoll_posix.c - src/core/lib/iomgr/ev_poll_posix.c - src/core/lib/iomgr/ev_posix.c @@ -100,6 +100,7 @@ if test "$PHP_GRPC" != "no"; then src/core/lib/iomgr/endpoint.c \ src/core/lib/iomgr/endpoint_pair_posix.c \ src/core/lib/iomgr/endpoint_pair_windows.c \ + src/core/lib/iomgr/ev_epoll_linux.c \ src/core/lib/iomgr/ev_poll_and_epoll_posix.c \ src/core/lib/iomgr/ev_poll_posix.c \ src/core/lib/iomgr/ev_posix.c \ diff --git a/gRPC.podspec b/gRPC.podspec index 10a836eb73..97168bdcbb 100644 --- a/gRPC.podspec +++ b/gRPC.podspec @@ -181,6 +181,7 @@ Pod::Spec.new do |s| 'src/core/lib/iomgr/closure.h', 'src/core/lib/iomgr/endpoint.h', 'src/core/lib/iomgr/endpoint_pair.h', + 'src/core/lib/iomgr/ev_epoll_linux.h', 'src/core/lib/iomgr/ev_poll_and_epoll_posix.h', 'src/core/lib/iomgr/ev_poll_posix.h', 'src/core/lib/iomgr/ev_posix.h', @@ -362,6 +363,7 @@ Pod::Spec.new do |s| 'src/core/lib/iomgr/endpoint.c', 'src/core/lib/iomgr/endpoint_pair_posix.c', 'src/core/lib/iomgr/endpoint_pair_windows.c', + 'src/core/lib/iomgr/ev_epoll_linux.c', 'src/core/lib/iomgr/ev_poll_and_epoll_posix.c', 'src/core/lib/iomgr/ev_poll_posix.c', 'src/core/lib/iomgr/ev_posix.c', @@ -554,6 +556,7 @@ Pod::Spec.new do |s| 'src/core/lib/iomgr/closure.h', 'src/core/lib/iomgr/endpoint.h', 'src/core/lib/iomgr/endpoint_pair.h', + 'src/core/lib/iomgr/ev_epoll_linux.h', 'src/core/lib/iomgr/ev_poll_and_epoll_posix.h', 'src/core/lib/iomgr/ev_poll_posix.h', 'src/core/lib/iomgr/ev_posix.h', diff --git a/grpc.gemspec b/grpc.gemspec index 24d512d152..401fd34450 100755 --- a/grpc.gemspec +++ b/grpc.gemspec @@ -190,6 +190,7 @@ Gem::Specification.new do |s| s.files += %w( src/core/lib/iomgr/closure.h ) s.files += %w( src/core/lib/iomgr/endpoint.h ) s.files += %w( src/core/lib/iomgr/endpoint_pair.h ) + s.files += %w( src/core/lib/iomgr/ev_epoll_linux.h ) s.files += %w( src/core/lib/iomgr/ev_poll_and_epoll_posix.h ) s.files += %w( src/core/lib/iomgr/ev_poll_posix.h ) s.files += %w( src/core/lib/iomgr/ev_posix.h ) @@ -341,6 +342,7 @@ Gem::Specification.new do |s| s.files += %w( src/core/lib/iomgr/endpoint.c ) s.files += %w( src/core/lib/iomgr/endpoint_pair_posix.c ) s.files += %w( src/core/lib/iomgr/endpoint_pair_windows.c ) + s.files += %w( src/core/lib/iomgr/ev_epoll_linux.c ) s.files += %w( src/core/lib/iomgr/ev_poll_and_epoll_posix.c ) s.files += %w( src/core/lib/iomgr/ev_poll_posix.c ) s.files += %w( src/core/lib/iomgr/ev_posix.c ) diff --git a/include/grpc/impl/codegen/port_platform.h b/include/grpc/impl/codegen/port_platform.h index 7fff36cb78..52fc13ad81 100644 --- a/include/grpc/impl/codegen/port_platform.h +++ b/include/grpc/impl/codegen/port_platform.h @@ -203,6 +203,7 @@ #ifdef __GLIBC_PREREQ #if __GLIBC_PREREQ(2, 9) #define GPR_LINUX_EVENTFD 1 +#define GPR_LINUX_EPOLL 1 #endif #if __GLIBC_PREREQ(2, 10) #define GPR_LINUX_SOCKETUTILS 1 diff --git a/package.xml b/package.xml index 9fa63e3090..ed4859d860 100644 --- a/package.xml +++ b/package.xml @@ -197,6 +197,7 @@ <file baseinstalldir="/" name="src/core/lib/iomgr/closure.h" role="src" /> <file baseinstalldir="/" name="src/core/lib/iomgr/endpoint.h" role="src" /> <file baseinstalldir="/" name="src/core/lib/iomgr/endpoint_pair.h" role="src" /> + <file baseinstalldir="/" name="src/core/lib/iomgr/ev_epoll_linux.h" role="src" /> <file baseinstalldir="/" name="src/core/lib/iomgr/ev_poll_and_epoll_posix.h" role="src" /> <file baseinstalldir="/" name="src/core/lib/iomgr/ev_poll_posix.h" role="src" /> <file baseinstalldir="/" name="src/core/lib/iomgr/ev_posix.h" role="src" /> @@ -348,6 +349,7 @@ <file baseinstalldir="/" name="src/core/lib/iomgr/endpoint.c" role="src" /> <file baseinstalldir="/" name="src/core/lib/iomgr/endpoint_pair_posix.c" role="src" /> <file baseinstalldir="/" name="src/core/lib/iomgr/endpoint_pair_windows.c" role="src" /> + <file baseinstalldir="/" name="src/core/lib/iomgr/ev_epoll_linux.c" role="src" /> <file baseinstalldir="/" name="src/core/lib/iomgr/ev_poll_and_epoll_posix.c" role="src" /> <file baseinstalldir="/" name="src/core/lib/iomgr/ev_poll_posix.c" role="src" /> <file baseinstalldir="/" name="src/core/lib/iomgr/ev_posix.c" role="src" /> diff --git a/src/core/lib/iomgr/ev_epoll_linux.c b/src/core/lib/iomgr/ev_epoll_linux.c new file mode 100644 index 0000000000..d2d5d2852b --- /dev/null +++ b/src/core/lib/iomgr/ev_epoll_linux.c @@ -0,0 +1,1515 @@ +/* + * + * 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. + * + */ + +#include <grpc/support/port_platform.h> + +#ifdef GPR_LINUX_EPOLL + +#include "src/core/lib/iomgr/ev_epoll_linux.h" + +#include <assert.h> +#include <errno.h> +#include <poll.h> +#include <signal.h> +#include <string.h> +#include <sys/epoll.h> +#include <sys/socket.h> +#include <unistd.h> + +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> +#include <grpc/support/string_util.h> +#include <grpc/support/tls.h> +#include <grpc/support/useful.h> + +#include "src/core/lib/iomgr/ev_posix.h" +#include "src/core/lib/iomgr/iomgr_internal.h" +#include "src/core/lib/iomgr/wakeup_fd_posix.h" +#include "src/core/lib/profiling/timers.h" +#include "src/core/lib/support/block_annotate.h" + +struct polling_island; + +static int grpc_poller_kick_signum; + +/******************************************************************************* + * Fd Declarations + */ +struct grpc_fd { + int fd; + /* refst format: + bit 0 : 1=Active / 0=Orphaned + bits 1-n : refcount + Ref/Unref by two to avoid altering the orphaned bit */ + gpr_atm refst; + + gpr_mu mu; + + /* Indicates that the fd is shutdown and that any pending read/write closures + should fail */ + bool shutdown; + + /* The fd is either closed or we relinquished control of it. In either cases, + this indicates that the 'fd' on this structure is no longer valid */ + bool orphaned; + + /* TODO: sreek - Move this to a lockfree implementation */ + grpc_closure *read_closure; + grpc_closure *write_closure; + + /* The polling island to which this fd belongs to and the mutex protecting the + the field */ + gpr_mu pi_mu; + struct polling_island *polling_island; + + struct grpc_fd *freelist_next; + grpc_closure *on_done_closure; + + /* The pollset that last noticed that the fd is readable */ + grpc_pollset *read_notifier_pollset; + + grpc_iomgr_object iomgr_object; +}; + +/* Reference counting for fds */ +#ifdef GRPC_FD_REF_COUNT_DEBUG +static void fd_ref(grpc_fd *fd, const char *reason, const char *file, int line); +static void fd_unref(grpc_fd *fd, const char *reason, const char *file, + int line); +#define GRPC_FD_REF(fd, reason) fd_ref(fd, reason, __FILE__, __LINE__) +#define GRPC_FD_UNREF(fd, reason) fd_unref(fd, reason, __FILE__, __LINE__) +#else +static void fd_ref(grpc_fd *fd); +static void fd_unref(grpc_fd *fd); +#define GRPC_FD_REF(fd, reason) fd_ref(fd) +#define GRPC_FD_UNREF(fd, reason) fd_unref(fd) +#endif + +static void fd_global_init(void); +static void fd_global_shutdown(void); + +#define CLOSURE_NOT_READY ((grpc_closure *)0) +#define CLOSURE_READY ((grpc_closure *)1) + +/******************************************************************************* + * Polling-island Declarations + */ +/* TODO: sree: Consider making ref_cnt and merged_to to gpr_atm - This would + * significantly reduce the number of mutex acquisition calls. */ +typedef struct polling_island { + gpr_mu mu; + int ref_cnt; + + /* Points to the polling_island this merged into. + * If merged_to is not NULL, all the remaining fields (except mu and ref_cnt) + * are invalid and must be ignored */ + struct polling_island *merged_to; + + /* The fd of the underlying epoll set */ + int epoll_fd; + + /* The file descriptors in the epoll set */ + size_t fd_cnt; + size_t fd_capacity; + grpc_fd **fds; + + /* Polling islands that are no longer needed are kept in a freelist so that + they can be reused. This field points to the next polling island in the + free list */ + struct polling_island *next_free; +} polling_island; + +/******************************************************************************* + * Pollset Declarations + */ +struct grpc_pollset_worker { + pthread_t pt_id; /* Thread id of this worker */ + struct grpc_pollset_worker *next; + struct grpc_pollset_worker *prev; +}; + +struct grpc_pollset { + gpr_mu mu; + grpc_pollset_worker root_worker; + bool kicked_without_pollers; + + bool shutting_down; /* Is the pollset shutting down ? */ + bool finish_shutdown_called; /* Is the 'finish_shutdown_locked()' called ? */ + grpc_closure *shutdown_done; /* Called after after shutdown is complete */ + + /* The polling island to which this pollset belongs to and the mutex + protecting the field */ + /* TODO: sreek: This lock might actually be adding more overhead to the + critical path (i.e pollset_work() function). Consider removing this lock + and just using the overall pollset lock */ + gpr_mu pi_mu; + struct polling_island *polling_island; +}; + +/******************************************************************************* + * Pollset-set Declarations + */ +/* TODO: sreek - Change the pollset_set implementation such that a pollset_set + * directly points to a polling_island (and adding an fd/pollset/pollset_set to + * the current pollset_set would result in polling island merges. This would + * remove the need to maintain fd_count here. This will also significantly + * simplify the grpc_fd structure since we would no longer need to explicitly + * maintain the orphaned state */ +struct grpc_pollset_set { + gpr_mu mu; + + size_t pollset_count; + size_t pollset_capacity; + grpc_pollset **pollsets; + + size_t pollset_set_count; + size_t pollset_set_capacity; + struct grpc_pollset_set **pollset_sets; + + size_t fd_count; + size_t fd_capacity; + grpc_fd **fds; +}; + +/******************************************************************************* + * Polling island Definitions + */ + +/* The wakeup fd that is used to wake up all threads in a Polling island. This + is useful in the polling island merge operation where we need to wakeup all + the threads currently polling the smaller polling island (so that they can + start polling the new/merged polling island) + + NOTE: This fd is initialized to be readable and MUST NOT be consumed i.e the + threads that woke up MUST NOT call grpc_wakeup_fd_consume_wakeup() */ +static grpc_wakeup_fd polling_island_wakeup_fd; + +/* Polling island freelist */ +static gpr_mu g_pi_freelist_mu; +static polling_island *g_pi_freelist = NULL; + +/* The caller is expected to hold pi->mu lock before calling this function */ +static void polling_island_add_fds_locked(polling_island *pi, grpc_fd **fds, + size_t fd_count, bool add_fd_refs) { + int err; + size_t i; + struct epoll_event ev; + + for (i = 0; i < fd_count; i++) { + ev.events = (uint32_t)(EPOLLIN | EPOLLOUT | EPOLLET); + ev.data.ptr = fds[i]; + err = epoll_ctl(pi->epoll_fd, EPOLL_CTL_ADD, fds[i]->fd, &ev); + + if (err < 0) { + if (errno != EEXIST) { + /* TODO: sreek - We need a better way to bubble up this error instead of + just logging a message */ + gpr_log(GPR_ERROR, "epoll_ctl add for fd: %d failed with error: %s", + fds[i]->fd, strerror(errno)); + } + + continue; + } + + if (pi->fd_cnt == pi->fd_capacity) { + pi->fd_capacity = GPR_MAX(pi->fd_capacity + 8, pi->fd_cnt * 3 / 2); + pi->fds = gpr_realloc(pi->fds, sizeof(grpc_fd *) * pi->fd_capacity); + } + + pi->fds[pi->fd_cnt++] = fds[i]; + if (add_fd_refs) { + GRPC_FD_REF(fds[i], "polling_island"); + } + } +} + +/* The caller is expected to hold pi->mu before calling this */ +static void polling_island_add_wakeup_fd_locked(polling_island *pi, + grpc_wakeup_fd *wakeup_fd) { + struct epoll_event ev; + int err; + + ev.events = (uint32_t)(EPOLLIN | EPOLLET); + ev.data.ptr = wakeup_fd; + err = epoll_ctl(pi->epoll_fd, EPOLL_CTL_ADD, + GRPC_WAKEUP_FD_GET_READ_FD(wakeup_fd), &ev); + if (err < 0) { + gpr_log(GPR_ERROR, + "Failed to add grpc_wake_up_fd (%d) to the epoll set (epoll_fd: %d)" + ". Error: %s", + GRPC_WAKEUP_FD_GET_READ_FD(&grpc_global_wakeup_fd), pi->epoll_fd, + strerror(errno)); + } +} + +/* The caller is expected to hold pi->mu lock before calling this function */ +static void polling_island_remove_all_fds_locked(polling_island *pi, + bool remove_fd_refs) { + int err; + size_t i; + + for (i = 0; i < pi->fd_cnt; i++) { + err = epoll_ctl(pi->epoll_fd, EPOLL_CTL_DEL, pi->fds[i]->fd, NULL); + if (err < 0 && errno != ENOENT) { + /* TODO: sreek - We need a better way to bubble up this error instead of + * just logging a message */ + gpr_log(GPR_ERROR, "epoll_ctl deleting fds[%d]: %d failed with error: %s", + i, pi->fds[i]->fd, strerror(errno)); + } + + if (remove_fd_refs) { + GRPC_FD_UNREF(pi->fds[i], "polling_island"); + } + } + + pi->fd_cnt = 0; +} + +/* The caller is expected to hold pi->mu lock before calling this function */ +static void polling_island_remove_fd_locked(polling_island *pi, grpc_fd *fd, + bool is_fd_closed) { + int err; + size_t i; + + /* If fd is already closed, then it would have been automatically been removed + from the epoll set */ + if (!is_fd_closed) { + err = epoll_ctl(pi->epoll_fd, EPOLL_CTL_DEL, fd->fd, NULL); + if (err < 0 && errno != ENOENT) { + gpr_log(GPR_ERROR, "epoll_ctl deleting fd: %d failed with error; %s", + fd->fd, strerror(errno)); + } + } + + for (i = 0; i < pi->fd_cnt; i++) { + if (pi->fds[i] == fd) { + pi->fds[i] = pi->fds[--pi->fd_cnt]; + GRPC_FD_UNREF(fd, "polling_island"); + break; + } + } +} + +static polling_island *polling_island_create(grpc_fd *initial_fd, + int initial_ref_cnt) { + polling_island *pi = NULL; + + /* Try to get one from the polling island freelist */ + gpr_mu_lock(&g_pi_freelist_mu); + if (g_pi_freelist != NULL) { + pi = g_pi_freelist; + g_pi_freelist = g_pi_freelist->next_free; + pi->next_free = NULL; + } + gpr_mu_unlock(&g_pi_freelist_mu); + + /* Create new polling island if we could not get one from the free list */ + if (pi == NULL) { + pi = gpr_malloc(sizeof(*pi)); + gpr_mu_init(&pi->mu); + pi->fd_cnt = 0; + pi->fd_capacity = 0; + pi->fds = NULL; + } + + pi->epoll_fd = epoll_create1(EPOLL_CLOEXEC); + if (pi->epoll_fd < 0) { + gpr_log(GPR_ERROR, "epoll_create1() failed with error: %s", + strerror(errno)); + } + GPR_ASSERT(pi->epoll_fd >= 0); + + polling_island_add_wakeup_fd_locked(pi, &grpc_global_wakeup_fd); + + pi->ref_cnt = initial_ref_cnt; + pi->merged_to = NULL; + pi->next_free = NULL; + + if (initial_fd != NULL) { + /* It is not really needed to get the pi->mu lock here. If this is a newly + created polling island (or one that we got from the freelist), no one + else would be holding a lock to it anyway */ + gpr_mu_lock(&pi->mu); + polling_island_add_fds_locked(pi, &initial_fd, 1, true); + gpr_mu_unlock(&pi->mu); + } + + return pi; +} + +static void polling_island_delete(polling_island *pi) { + GPR_ASSERT(pi->ref_cnt == 0); + GPR_ASSERT(pi->fd_cnt == 0); + + close(pi->epoll_fd); + pi->epoll_fd = -1; + + pi->merged_to = NULL; + + gpr_mu_lock(&g_pi_freelist_mu); + pi->next_free = g_pi_freelist; + g_pi_freelist = pi; + gpr_mu_unlock(&g_pi_freelist_mu); +} + +void polling_island_unref_and_unlock(polling_island *pi, int unref_by) { + pi->ref_cnt -= unref_by; + int ref_cnt = pi->ref_cnt; + GPR_ASSERT(ref_cnt >= 0); + + gpr_mu_unlock(&pi->mu); + + if (ref_cnt == 0) { + polling_island_delete(pi); + } +} + +polling_island *polling_island_update_and_lock(polling_island *pi, int unref_by, + int add_ref_by) { + polling_island *next = NULL; + gpr_mu_lock(&pi->mu); + while (pi->merged_to != NULL) { + next = pi->merged_to; + polling_island_unref_and_unlock(pi, unref_by); + pi = next; + gpr_mu_lock(&pi->mu); + } + + pi->ref_cnt += add_ref_by; + return pi; +} + +void polling_island_pair_update_and_lock(polling_island **p, + polling_island **q) { + polling_island *pi_1 = *p; + polling_island *pi_2 = *q; + polling_island *temp = NULL; + bool pi_1_locked = false; + bool pi_2_locked = false; + int num_swaps = 0; + + /* Loop until either pi_1 == pi_2 or until we acquired locks on both pi_1 + and pi_2 */ + while (pi_1 != pi_2 && !(pi_1_locked && pi_2_locked)) { + /* The following assertions are true at this point: + - pi_1 != pi_2 (else, the while loop would have exited) + - pi_1 MAY be locked + - pi_2 is NOT locked */ + + /* To maintain lock order consistency, always lock polling_island node with + lower address first. + First, make sure pi_1 < pi_2 before proceeding any further. If it turns + out that pi_1 > pi_2, unlock pi_1 if locked (because pi_2 is not locked + at this point and having pi_1 locked would violate the lock order) and + swap pi_1 and pi_2 so that pi_1 becomes less than pi_2 */ + if (pi_1 > pi_2) { + if (pi_1_locked) { + gpr_mu_unlock(&pi_1->mu); + pi_1_locked = false; + } + + GPR_SWAP(polling_island *, pi_1, pi_2); + num_swaps++; + } + + /* The following assertions are true at this point: + - pi_1 != pi_2 + - pi_1 < pi_2 (address of pi_1 is less than that of pi_2) + - pi_1 MAYBE locked + - pi_2 is NOT locked */ + + /* Lock pi_1 (if pi_1 is pointing to the terminal node in the list) */ + if (!pi_1_locked) { + gpr_mu_lock(&pi_1->mu); + pi_1_locked = true; + + /* If pi_1 is not terminal node (i.e pi_1->merged_to != NULL), we are not + done locking this polling_island yet. Release the lock on this node and + advance pi_1 to the next node in the list; and go to the beginning of + the loop (we can't proceed to locking pi_2 unless we locked pi_1 first) + */ + if (pi_1->merged_to != NULL) { + temp = pi_1->merged_to; + polling_island_unref_and_unlock(pi_1, 1); + pi_1 = temp; + pi_1_locked = false; + + continue; + } + } + + /* The following assertions are true at this point: + - pi_1 is locked + - pi_2 is unlocked + - pi_1 != pi_2 */ + + gpr_mu_lock(&pi_2->mu); + pi_2_locked = true; + + /* If pi_2 is not terminal node, we are not done locking this polling_island + yet. Release the lock and update pi_2 to the next node in the list */ + if (pi_2->merged_to != NULL) { + temp = pi_2->merged_to; + polling_island_unref_and_unlock(pi_2, 1); + pi_2 = temp; + pi_2_locked = false; + } + } + + /* At this point, either pi_1 == pi_2 AND/OR we got both locks */ + if (pi_1 == pi_2) { + /* We may or may not have gotten the lock. If we didn't, walk the rest of + the polling_island list and get the lock */ + GPR_ASSERT(pi_1_locked || (!pi_1_locked && !pi_2_locked)); + if (!pi_1_locked) { + pi_1 = pi_2 = polling_island_update_and_lock(pi_1, 2, 0); + } + } else { + GPR_ASSERT(pi_1_locked && pi_2_locked); + /* If we swapped pi_1 and pi_2 odd number of times, do one more swap so that + pi_1 and pi_2 point to the same polling_island lists they started off + with at the beginning of this function (i.e *p and *q respectively) */ + if (num_swaps % 2 > 0) { + GPR_SWAP(polling_island *, pi_1, pi_2); + } + } + + *p = pi_1; + *q = pi_2; +} + +polling_island *polling_island_merge(polling_island *p, polling_island *q) { + /* Get locks on both the polling islands */ + polling_island_pair_update_and_lock(&p, &q); + + if (p == q) { + /* Nothing needs to be done here */ + gpr_mu_unlock(&p->mu); + return p; + } + + /* Make sure that p points to the polling island with fewer fds than q */ + if (p->fd_cnt > q->fd_cnt) { + GPR_SWAP(polling_island *, p, q); + } + + /* "Merge" p with q i.e move all the fds from p (The one with fewer fds) to q + Note that the refcounts on the fds being moved will not change here. This + is why the last parameter in the following two functions is 'false') */ + polling_island_add_fds_locked(q, p->fds, p->fd_cnt, false); + polling_island_remove_all_fds_locked(p, false); + + /* Wakeup all the pollers (if any) on p so that they can pickup this change */ + polling_island_add_wakeup_fd_locked(p, &polling_island_wakeup_fd); + + /* - The merged polling island (i.e q) inherits all the ref counts of the + island merging with it (i.e p) + - The island p will lose a ref count */ + q->ref_cnt += p->ref_cnt; + p->ref_cnt--; + + gpr_mu_unlock(&p->mu); + gpr_mu_unlock(&q->mu); + + return q; +} + +static void polling_island_global_init() { + gpr_mu_init(&g_pi_freelist_mu); + g_pi_freelist = NULL; + grpc_wakeup_fd_init(&polling_island_wakeup_fd); + grpc_wakeup_fd_wakeup(&polling_island_wakeup_fd); +} + +static void polling_island_global_shutdown() { + polling_island *next; + gpr_mu_lock(&g_pi_freelist_mu); + gpr_mu_unlock(&g_pi_freelist_mu); + while (g_pi_freelist != NULL) { + next = g_pi_freelist->next_free; + gpr_mu_destroy(&g_pi_freelist->mu); + gpr_free(g_pi_freelist->fds); + gpr_free(g_pi_freelist); + g_pi_freelist = next; + } + gpr_mu_destroy(&g_pi_freelist_mu); + + grpc_wakeup_fd_destroy(&polling_island_wakeup_fd); +} + +/******************************************************************************* + * Fd Definitions + */ + +/* We need to keep a freelist not because of any concerns of malloc performance + * but instead so that implementations with multiple threads in (for example) + * epoll_wait deal with the race between pollset removal and incoming poll + * notifications. + * + * The problem is that the poller ultimately holds a reference to this + * object, so it is very difficult to know when is safe to free it, at least + * without some expensive synchronization. + * + * If we keep the object freelisted, in the worst case losing this race just + * becomes a spurious read notification on a reused fd. + */ + +/* The alarm system needs to be able to wakeup 'some poller' sometimes + * (specifically when a new alarm needs to be triggered earlier than the next + * alarm 'epoch'). This wakeup_fd gives us something to alert on when such a + * case occurs. */ + +/* TODO: sreek: Right now, this wakes up all pollers. In future we should make + * sure to wake up one polling thread (which can wake up other threads if + * needed) */ +grpc_wakeup_fd grpc_global_wakeup_fd; + +static grpc_fd *fd_freelist = NULL; +static gpr_mu fd_freelist_mu; + +#ifdef GRPC_FD_REF_COUNT_DEBUG +#define REF_BY(fd, n, reason) ref_by(fd, n, reason, __FILE__, __LINE__) +#define UNREF_BY(fd, n, reason) unref_by(fd, n, reason, __FILE__, __LINE__) +static void ref_by(grpc_fd *fd, int n, const char *reason, const char *file, + int line) { + gpr_log(GPR_DEBUG, "FD %d %p ref %d %d -> %d [%s; %s:%d]", fd->fd, fd, n, + gpr_atm_no_barrier_load(&fd->refst), + gpr_atm_no_barrier_load(&fd->refst) + n, reason, file, line); +#else +#define REF_BY(fd, n, reason) ref_by(fd, n) +#define UNREF_BY(fd, n, reason) unref_by(fd, n) +static void ref_by(grpc_fd *fd, int n) { +#endif + GPR_ASSERT(gpr_atm_no_barrier_fetch_add(&fd->refst, n) > 0); +} + +#ifdef GRPC_FD_REF_COUNT_DEBUG +static void unref_by(grpc_fd *fd, int n, const char *reason, const char *file, + int line) { + gpr_atm old; + gpr_log(GPR_DEBUG, "FD %d %p unref %d %d -> %d [%s; %s:%d]", fd->fd, fd, n, + gpr_atm_no_barrier_load(&fd->refst), + gpr_atm_no_barrier_load(&fd->refst) - n, reason, file, line); +#else +static void unref_by(grpc_fd *fd, int n) { + gpr_atm old; +#endif + old = gpr_atm_full_fetch_add(&fd->refst, -n); + if (old == n) { + /* Add the fd to the freelist */ + gpr_mu_lock(&fd_freelist_mu); + fd->freelist_next = fd_freelist; + fd_freelist = fd; + grpc_iomgr_unregister_object(&fd->iomgr_object); + gpr_mu_unlock(&fd_freelist_mu); + } else { + GPR_ASSERT(old > n); + } +} + +/* Increment refcount by two to avoid changing the orphan bit */ +#ifdef GRPC_FD_REF_COUNT_DEBUG +static void fd_ref(grpc_fd *fd, const char *reason, const char *file, + int line) { + ref_by(fd, 2, reason, file, line); +} + +static void fd_unref(grpc_fd *fd, const char *reason, const char *file, + int line) { + unref_by(fd, 2, reason, file, line); +} +#else +static void fd_ref(grpc_fd *fd) { ref_by(fd, 2); } +static void fd_unref(grpc_fd *fd) { unref_by(fd, 2); } +#endif + +static void fd_global_init(void) { gpr_mu_init(&fd_freelist_mu); } + +static void fd_global_shutdown(void) { + gpr_mu_lock(&fd_freelist_mu); + gpr_mu_unlock(&fd_freelist_mu); + while (fd_freelist != NULL) { + grpc_fd *fd = fd_freelist; + fd_freelist = fd_freelist->freelist_next; + gpr_mu_destroy(&fd->mu); + gpr_free(fd); + } + gpr_mu_destroy(&fd_freelist_mu); +} + +static grpc_fd *fd_create(int fd, const char *name) { + grpc_fd *new_fd = NULL; + + gpr_mu_lock(&fd_freelist_mu); + if (fd_freelist != NULL) { + new_fd = fd_freelist; + fd_freelist = fd_freelist->freelist_next; + } + gpr_mu_unlock(&fd_freelist_mu); + + if (new_fd == NULL) { + new_fd = gpr_malloc(sizeof(grpc_fd)); + gpr_mu_init(&new_fd->mu); + gpr_mu_init(&new_fd->pi_mu); + } + + /* Note: It is not really needed to get the new_fd->mu lock here. If this is a + newly created fd (or an fd we got from the freelist), no one else would be + holding a lock to it anyway. */ + gpr_mu_lock(&new_fd->mu); + + gpr_atm_rel_store(&new_fd->refst, 1); + new_fd->fd = fd; + new_fd->shutdown = false; + new_fd->orphaned = false; + new_fd->read_closure = CLOSURE_NOT_READY; + new_fd->write_closure = CLOSURE_NOT_READY; + new_fd->polling_island = NULL; + new_fd->freelist_next = NULL; + new_fd->on_done_closure = NULL; + new_fd->read_notifier_pollset = NULL; + + gpr_mu_unlock(&new_fd->mu); + + char *fd_name; + gpr_asprintf(&fd_name, "%s fd=%d", name, fd); + grpc_iomgr_register_object(&new_fd->iomgr_object, fd_name); + gpr_free(fd_name); +#ifdef GRPC_FD_REF_COUNT_DEBUG + gpr_log(GPR_DEBUG, "FD %d %p create %s", fd, r, fd_name); +#endif + return new_fd; +} + +static bool fd_is_orphaned(grpc_fd *fd) { + return (gpr_atm_acq_load(&fd->refst) & 1) == 0; +} + +static int fd_wrapped_fd(grpc_fd *fd) { + int ret_fd = -1; + gpr_mu_lock(&fd->mu); + if (!fd->orphaned) { + ret_fd = fd->fd; + } + gpr_mu_unlock(&fd->mu); + + return ret_fd; +} + +static void fd_orphan(grpc_exec_ctx *exec_ctx, grpc_fd *fd, + grpc_closure *on_done, int *release_fd, + const char *reason) { + bool is_fd_closed = false; + gpr_mu_lock(&fd->mu); + fd->on_done_closure = on_done; + + /* If release_fd is not NULL, we should be relinquishing control of the file + descriptor fd->fd (but we still own the grpc_fd structure). */ + if (release_fd != NULL) { + *release_fd = fd->fd; + } else { + close(fd->fd); + is_fd_closed = true; + } + + fd->orphaned = true; + + /* Remove the active status but keep referenced. We want this grpc_fd struct + to be alive (and not added to freelist) until the end of this function */ + REF_BY(fd, 1, reason); + + /* Remove the fd from the polling island: + - Update the fd->polling_island to point to the latest polling island + - Remove the fd from the polling island. + - Remove a ref to the polling island and set fd->polling_island to NULL */ + gpr_mu_lock(&fd->pi_mu); + if (fd->polling_island != NULL) { + fd->polling_island = + polling_island_update_and_lock(fd->polling_island, 1, 0); + polling_island_remove_fd_locked(fd->polling_island, fd, is_fd_closed); + + polling_island_unref_and_unlock(fd->polling_island, 1); + fd->polling_island = NULL; + } + gpr_mu_unlock(&fd->pi_mu); + + grpc_exec_ctx_enqueue(exec_ctx, fd->on_done_closure, true, NULL); + + gpr_mu_unlock(&fd->mu); + UNREF_BY(fd, 2, reason); /* Drop the reference */ +} + +static void notify_on_locked(grpc_exec_ctx *exec_ctx, grpc_fd *fd, + grpc_closure **st, grpc_closure *closure) { + if (*st == CLOSURE_NOT_READY) { + /* not ready ==> switch to a waiting state by setting the closure */ + *st = closure; + } else if (*st == CLOSURE_READY) { + /* already ready ==> queue the closure to run immediately */ + *st = CLOSURE_NOT_READY; + grpc_exec_ctx_enqueue(exec_ctx, closure, !fd->shutdown, NULL); + } else { + /* upcallptr was set to a different closure. This is an error! */ + gpr_log(GPR_ERROR, + "User called a notify_on function with a previous callback still " + "pending"); + abort(); + } +} + +/* returns 1 if state becomes not ready */ +static int set_ready_locked(grpc_exec_ctx *exec_ctx, grpc_fd *fd, + grpc_closure **st) { + if (*st == CLOSURE_READY) { + /* duplicate ready ==> ignore */ + return 0; + } else if (*st == CLOSURE_NOT_READY) { + /* not ready, and not waiting ==> flag ready */ + *st = CLOSURE_READY; + return 0; + } else { + /* waiting ==> queue closure */ + grpc_exec_ctx_enqueue(exec_ctx, *st, !fd->shutdown, NULL); + *st = CLOSURE_NOT_READY; + return 1; + } +} + +static grpc_pollset *fd_get_read_notifier_pollset(grpc_exec_ctx *exec_ctx, + grpc_fd *fd) { + grpc_pollset *notifier = NULL; + + gpr_mu_lock(&fd->mu); + notifier = fd->read_notifier_pollset; + gpr_mu_unlock(&fd->mu); + + return notifier; +} + +static void fd_shutdown(grpc_exec_ctx *exec_ctx, grpc_fd *fd) { + gpr_mu_lock(&fd->mu); + GPR_ASSERT(!fd->shutdown); + fd->shutdown = true; + + /* Flush any pending read and write closures. Since fd->shutdown is 'true' at + this point, the closures would be called with 'success = false' */ + set_ready_locked(exec_ctx, fd, &fd->read_closure); + set_ready_locked(exec_ctx, fd, &fd->write_closure); + gpr_mu_unlock(&fd->mu); +} + +static void fd_notify_on_read(grpc_exec_ctx *exec_ctx, grpc_fd *fd, + grpc_closure *closure) { + gpr_mu_lock(&fd->mu); + notify_on_locked(exec_ctx, fd, &fd->read_closure, closure); + gpr_mu_unlock(&fd->mu); +} + +static void fd_notify_on_write(grpc_exec_ctx *exec_ctx, grpc_fd *fd, + grpc_closure *closure) { + gpr_mu_lock(&fd->mu); + notify_on_locked(exec_ctx, fd, &fd->write_closure, closure); + gpr_mu_unlock(&fd->mu); +} + +/******************************************************************************* + * Pollset Definitions + */ +GPR_TLS_DECL(g_current_thread_pollset); +GPR_TLS_DECL(g_current_thread_worker); + +static void sig_handler(int sig_num) { +#ifdef GRPC_EPOLL_DEBUG + gpr_log(GPR_INFO, "Received signal %d", sig_num); +#endif +} + +static void poller_kick_init() { + grpc_poller_kick_signum = SIGRTMIN + 2; + signal(grpc_poller_kick_signum, sig_handler); +} + +/* Global state management */ +static void pollset_global_init(void) { + grpc_wakeup_fd_init(&grpc_global_wakeup_fd); + gpr_tls_init(&g_current_thread_pollset); + gpr_tls_init(&g_current_thread_worker); + poller_kick_init(); +} + +static void pollset_global_shutdown(void) { + grpc_wakeup_fd_destroy(&grpc_global_wakeup_fd); + gpr_tls_destroy(&g_current_thread_pollset); + gpr_tls_destroy(&g_current_thread_worker); +} + +static void pollset_worker_kick(grpc_pollset_worker *worker) { + pthread_kill(worker->pt_id, grpc_poller_kick_signum); +} + +/* Return 1 if the pollset has active threads in pollset_work (pollset must + * be locked) */ +static int pollset_has_workers(grpc_pollset *p) { + return p->root_worker.next != &p->root_worker; +} + +static void remove_worker(grpc_pollset *p, grpc_pollset_worker *worker) { + worker->prev->next = worker->next; + worker->next->prev = worker->prev; +} + +static grpc_pollset_worker *pop_front_worker(grpc_pollset *p) { + if (pollset_has_workers(p)) { + grpc_pollset_worker *w = p->root_worker.next; + remove_worker(p, w); + return w; + } else { + return NULL; + } +} + +static void push_back_worker(grpc_pollset *p, grpc_pollset_worker *worker) { + worker->next = &p->root_worker; + worker->prev = worker->next->prev; + worker->prev->next = worker->next->prev = worker; +} + +static void push_front_worker(grpc_pollset *p, grpc_pollset_worker *worker) { + worker->prev = &p->root_worker; + worker->next = worker->prev->next; + worker->prev->next = worker->next->prev = worker; +} + +/* p->mu must be held before calling this function */ +static void pollset_kick(grpc_pollset *p, + grpc_pollset_worker *specific_worker) { + GPR_TIMER_BEGIN("pollset_kick", 0); + + grpc_pollset_worker *worker = specific_worker; + if (worker != NULL) { + if (worker == GRPC_POLLSET_KICK_BROADCAST) { + if (pollset_has_workers(p)) { + GPR_TIMER_BEGIN("pollset_kick.broadcast", 0); + for (worker = p->root_worker.next; worker != &p->root_worker; + worker = worker->next) { + if (gpr_tls_get(&g_current_thread_worker) != (intptr_t)worker) { + pollset_worker_kick(worker); + } + } + } else { + p->kicked_without_pollers = true; + } + GPR_TIMER_END("pollset_kick.broadcast", 0); + } else { + GPR_TIMER_MARK("kicked_specifically", 0); + if (gpr_tls_get(&g_current_thread_worker) != (intptr_t)worker) { + pollset_worker_kick(worker); + } + } + } else if (gpr_tls_get(&g_current_thread_pollset) != (intptr_t)p) { + /* Since worker == NULL, it means that we can kick "any" worker on this + pollset 'p'. If 'p' happens to be the same pollset this thread is + currently polling (i.e in pollset_work() function), then there is no need + to kick any other worker since the current thread can just absorb the + kick. This is the reason why we enter this case only when + g_current_thread_pollset is != p */ + + GPR_TIMER_MARK("kick_anonymous", 0); + worker = pop_front_worker(p); + if (worker != NULL) { + GPR_TIMER_MARK("finally_kick", 0); + push_back_worker(p, worker); + pollset_worker_kick(worker); + } else { + GPR_TIMER_MARK("kicked_no_pollers", 0); + p->kicked_without_pollers = true; + } + } + + GPR_TIMER_END("pollset_kick", 0); +} + +static void kick_poller(void) { grpc_wakeup_fd_wakeup(&grpc_global_wakeup_fd); } + +static void pollset_init(grpc_pollset *pollset, gpr_mu **mu) { + gpr_mu_init(&pollset->mu); + *mu = &pollset->mu; + + pollset->root_worker.next = pollset->root_worker.prev = &pollset->root_worker; + pollset->kicked_without_pollers = false; + + pollset->shutting_down = false; + pollset->finish_shutdown_called = false; + pollset->shutdown_done = NULL; + + gpr_mu_init(&pollset->pi_mu); + pollset->polling_island = NULL; +} + +/* 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 */ +static int poll_deadline_to_millis_timeout(gpr_timespec deadline, + gpr_timespec now) { + gpr_timespec timeout; + static const int64_t max_spin_polling_us = 10; + if (gpr_time_cmp(deadline, gpr_inf_future(deadline.clock_type)) == 0) { + return -1; + } + + if (gpr_time_cmp(deadline, gpr_time_add(now, gpr_time_from_micros( + max_spin_polling_us, + GPR_TIMESPAN))) <= 0) { + return 0; + } + timeout = gpr_time_sub(deadline, now); + return gpr_time_to_millis(gpr_time_add( + timeout, gpr_time_from_nanos(GPR_NS_PER_MS - 1, GPR_TIMESPAN))); +} + +static void fd_become_readable(grpc_exec_ctx *exec_ctx, grpc_fd *fd, + grpc_pollset *notifier) { + /* Need the fd->mu since we might be racing with fd_notify_on_read */ + gpr_mu_lock(&fd->mu); + set_ready_locked(exec_ctx, fd, &fd->read_closure); + fd->read_notifier_pollset = notifier; + gpr_mu_unlock(&fd->mu); +} + +static void fd_become_writable(grpc_exec_ctx *exec_ctx, grpc_fd *fd) { + /* Need the fd->mu since we might be racing with fd_notify_on_write */ + gpr_mu_lock(&fd->mu); + set_ready_locked(exec_ctx, fd, &fd->write_closure); + gpr_mu_unlock(&fd->mu); +} + +/* Release the reference to pollset->polling_island and set it to NULL. + pollset->mu must be held */ +static void pollset_release_polling_island_locked(grpc_pollset *pollset) { + gpr_mu_lock(&pollset->pi_mu); + if (pollset->polling_island) { + pollset->polling_island = + polling_island_update_and_lock(pollset->polling_island, 1, 0); + polling_island_unref_and_unlock(pollset->polling_island, 1); + pollset->polling_island = NULL; + } + gpr_mu_unlock(&pollset->pi_mu); +} + +static void finish_shutdown_locked(grpc_exec_ctx *exec_ctx, + grpc_pollset *pollset) { + /* The pollset cannot have any workers if we are at this stage */ + GPR_ASSERT(!pollset_has_workers(pollset)); + + pollset->finish_shutdown_called = true; + pollset_release_polling_island_locked(pollset); + + grpc_exec_ctx_enqueue(exec_ctx, pollset->shutdown_done, true, NULL); +} + +/* pollset->mu lock must be held by the caller before calling this */ +static void pollset_shutdown(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, + grpc_closure *closure) { + GPR_TIMER_BEGIN("pollset_shutdown", 0); + GPR_ASSERT(!pollset->shutting_down); + pollset->shutting_down = true; + pollset->shutdown_done = closure; + pollset_kick(pollset, GRPC_POLLSET_KICK_BROADCAST); + + /* If the pollset has any workers, we cannot call finish_shutdown_locked() + because it would release the underlying polling island. In such a case, we + let the last worker call finish_shutdown_locked() from pollset_work() */ + if (!pollset_has_workers(pollset)) { + GPR_ASSERT(!pollset->finish_shutdown_called); + GPR_TIMER_MARK("pollset_shutdown.finish_shutdown_locked", 0); + finish_shutdown_locked(exec_ctx, pollset); + } + GPR_TIMER_END("pollset_shutdown", 0); +} + +/* pollset_shutdown is guaranteed to be called before pollset_destroy. So other + * than destroying the mutexes, there is nothing special that needs to be done + * here */ +static void pollset_destroy(grpc_pollset *pollset) { + GPR_ASSERT(!pollset_has_workers(pollset)); + gpr_mu_destroy(&pollset->pi_mu); + gpr_mu_destroy(&pollset->mu); +} + +static void pollset_reset(grpc_pollset *pollset) { + GPR_ASSERT(pollset->shutting_down); + GPR_ASSERT(!pollset_has_workers(pollset)); + pollset->shutting_down = false; + pollset->finish_shutdown_called = false; + pollset->kicked_without_pollers = false; + pollset->shutdown_done = NULL; + pollset_release_polling_island_locked(pollset); +} + +#define GRPC_EPOLL_MAX_EVENTS 1000 +static void pollset_work_and_unlock(grpc_exec_ctx *exec_ctx, + grpc_pollset *pollset, int timeout_ms, + sigset_t *sig_mask) { + struct epoll_event ep_ev[GRPC_EPOLL_MAX_EVENTS]; + int epoll_fd = -1; + int ep_rv; + polling_island *pi = NULL; + GPR_TIMER_BEGIN("pollset_work_and_unlock", 0); + + /* We need to get the epoll_fd to wait on. The epoll_fd is in inside the + polling island pointed by pollset->polling_island. + Acquire the following locks: + - pollset->mu (which we already have) + - pollset->pi_mu + - pollset->polling_island->mu */ + gpr_mu_lock(&pollset->pi_mu); + + pi = pollset->polling_island; + if (pi == NULL) { + pi = polling_island_create(NULL, 1); + } + + /* In addition to locking the polling island, add a ref so that the island + does not get destroyed (which means the epoll_fd won't be closed) while + we are are doing an epoll_wait() on the epoll_fd */ + pi = polling_island_update_and_lock(pi, 1, 1); + epoll_fd = pi->epoll_fd; + + /* Update the pollset->polling_island */ + pollset->polling_island = pi; + +#ifdef GRPC_EPOLL_DEBUG + if (pollset->polling_island->fd_cnt == 0) { + gpr_log(GPR_DEBUG, "pollset_work_and_unlock: epoll_fd: %d, No other fds", + epoll_fd); + } + for (size_t i = 0; i < pollset->polling_island->fd_cnt; i++) { + gpr_log(GPR_DEBUG, + "pollset_work_and_unlock: epoll_fd: %d, fd_count: %d, fd[%d]: %d", + epoll_fd, pollset->polling_island->fd_cnt, i, + pollset->polling_island->fds[i]->fd); + } +#endif + gpr_mu_unlock(&pollset->polling_island->mu); + + gpr_mu_unlock(&pollset->pi_mu); + gpr_mu_unlock(&pollset->mu); + + do { + ep_rv = epoll_pwait(epoll_fd, ep_ev, GRPC_EPOLL_MAX_EVENTS, timeout_ms, + sig_mask); + if (ep_rv < 0) { + if (errno != EINTR) { + gpr_log(GPR_ERROR, "epoll_pwait() failed: %s", strerror(errno)); + } else { + /* We were interrupted. Save an interation by doing a zero timeout + epoll_wait to see if there are any other events of interest */ + ep_rv = epoll_wait(epoll_fd, ep_ev, GRPC_EPOLL_MAX_EVENTS, 0); + } + } + + int i; + for (i = 0; i < ep_rv; ++i) { + void *data_ptr = ep_ev[i].data.ptr; + if (data_ptr == &grpc_global_wakeup_fd) { + grpc_wakeup_fd_consume_wakeup(&grpc_global_wakeup_fd); + } else if (data_ptr == &polling_island_wakeup_fd) { + /* This means that our polling island is merged with a different + island. We do not have to do anything here since the subsequent call + to the function pollset_work_and_unlock() will pick up the correct + epoll_fd */ + } else { + grpc_fd *fd = data_ptr; + int cancel = ep_ev[i].events & (EPOLLERR | EPOLLHUP); + int read_ev = ep_ev[i].events & (EPOLLIN | EPOLLPRI); + int write_ev = ep_ev[i].events & EPOLLOUT; + if (read_ev || cancel) { + fd_become_readable(exec_ctx, fd, pollset); + } + if (write_ev || cancel) { + fd_become_writable(exec_ctx, fd); + } + } + } + } while (ep_rv == GRPC_EPOLL_MAX_EVENTS); + + GPR_ASSERT(pi != NULL); + + /* Before leaving, release the extra ref we added to the polling island */ + /* It is important to note that at this point 'pi' may not be the same as + * pollset->polling_island. This is because pollset->polling_island pointer + * gets updated whenever the underlying polling island is merged with another + * island and while we are doing epoll_wait() above, the polling island may + * have been merged */ + + /* TODO (sreek) - Change the ref count on polling island to gpr_atm so that + * we do not have to do this here */ + gpr_mu_lock(&pi->mu); + polling_island_unref_and_unlock(pi, 1); + + GPR_TIMER_END("pollset_work_and_unlock", 0); +} + +/* pollset->mu lock must be held by the caller before calling this. + The function pollset_work() may temporarily release the lock (pollset->mu) + during the course of its execution but it will always re-acquire the lock and + ensure that it is held by the time the function returns */ +static void pollset_work(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, + grpc_pollset_worker **worker_hdl, gpr_timespec now, + gpr_timespec deadline) { + GPR_TIMER_BEGIN("pollset_work", 0); + int timeout_ms = poll_deadline_to_millis_timeout(deadline, now); + + sigset_t new_mask; + sigset_t orig_mask; + + grpc_pollset_worker worker; + worker.next = worker.prev = NULL; + worker.pt_id = pthread_self(); + + *worker_hdl = &worker; + gpr_tls_set(&g_current_thread_pollset, (intptr_t)pollset); + gpr_tls_set(&g_current_thread_worker, (intptr_t)&worker); + + if (pollset->kicked_without_pollers) { + /* If the pollset was kicked without pollers, pretend that the current + worker got the kick and skip polling. A kick indicates that there is some + work that needs attention like an event on the completion queue or an + alarm */ + GPR_TIMER_MARK("pollset_work.kicked_without_pollers", 0); + pollset->kicked_without_pollers = 0; + } else if (!pollset->shutting_down) { + sigemptyset(&new_mask); + sigaddset(&new_mask, grpc_poller_kick_signum); + pthread_sigmask(SIG_BLOCK, &new_mask, &orig_mask); + sigdelset(&orig_mask, grpc_poller_kick_signum); + + push_front_worker(pollset, &worker); + + pollset_work_and_unlock(exec_ctx, pollset, timeout_ms, &orig_mask); + grpc_exec_ctx_flush(exec_ctx); + + gpr_mu_lock(&pollset->mu); + remove_worker(pollset, &worker); + } + + /* If we are the last worker on the pollset (i.e pollset_has_workers() is + false at this point) and the pollset is shutting down, we may have to + finish the shutdown process by calling finish_shutdown_locked(). + See pollset_shutdown() for more details. + + Note: Continuing to access pollset here is safe; it is the caller's + responsibility to not destroy a pollset when it has outstanding calls to + pollset_work() */ + if (pollset->shutting_down && !pollset_has_workers(pollset) && + !pollset->finish_shutdown_called) { + GPR_TIMER_MARK("pollset_work.finish_shutdown_locked", 0); + finish_shutdown_locked(exec_ctx, pollset); + + gpr_mu_unlock(&pollset->mu); + grpc_exec_ctx_flush(exec_ctx); + gpr_mu_lock(&pollset->mu); + } + + *worker_hdl = NULL; + gpr_tls_set(&g_current_thread_pollset, (intptr_t)0); + gpr_tls_set(&g_current_thread_worker, (intptr_t)0); + GPR_TIMER_END("pollset_work", 0); +} + +static void pollset_add_fd(grpc_exec_ctx *exec_ctx, grpc_pollset *pollset, + grpc_fd *fd) { + /* TODO sreek - Double check if we need to get a pollset->mu lock here */ + gpr_mu_lock(&pollset->pi_mu); + gpr_mu_lock(&fd->pi_mu); + + polling_island *pi_new = NULL; + + /* 1) If fd->polling_island and pollset->polling_island are both non-NULL and + * equal, do nothing. + * 2) If fd->polling_island and pollset->polling_island are both NULL, create + * a new polling island (with a refcount of 2) and make the polling_island + * fields in both fd and pollset to point to the new island + * 3) If one of fd->polling_island or pollset->polling_island is NULL, update + * the NULL polling_island field to point to the non-NULL polling_island + * field (ensure that the refcount on the polling island is incremented by + * 1 to account for the newly added reference) + * 4) Finally, if fd->polling_island and pollset->polling_island are non-NULL + * and different, merge both the polling islands and update the + * polling_island fields in both fd and pollset to point to the merged + * polling island. + */ + if (fd->polling_island == pollset->polling_island) { + pi_new = fd->polling_island; + if (pi_new == NULL) { + pi_new = polling_island_create(fd, 2); + } + } else if (fd->polling_island == NULL) { + pi_new = polling_island_update_and_lock(pollset->polling_island, 1, 1); + polling_island_add_fds_locked(pollset->polling_island, &fd, 1, true); + gpr_mu_unlock(&pi_new->mu); + } else if (pollset->polling_island == NULL) { + pi_new = polling_island_update_and_lock(fd->polling_island, 1, 1); + gpr_mu_unlock(&pi_new->mu); + } else { + pi_new = polling_island_merge(fd->polling_island, pollset->polling_island); + } + + fd->polling_island = pollset->polling_island = pi_new; + + gpr_mu_unlock(&fd->pi_mu); + gpr_mu_unlock(&pollset->pi_mu); +} + +/******************************************************************************* + * Pollset-set Definitions + */ + +static grpc_pollset_set *pollset_set_create(void) { + grpc_pollset_set *pollset_set = gpr_malloc(sizeof(*pollset_set)); + memset(pollset_set, 0, sizeof(*pollset_set)); + gpr_mu_init(&pollset_set->mu); + return pollset_set; +} + +static void pollset_set_destroy(grpc_pollset_set *pollset_set) { + size_t i; + gpr_mu_destroy(&pollset_set->mu); + for (i = 0; i < pollset_set->fd_count; i++) { + GRPC_FD_UNREF(pollset_set->fds[i], "pollset_set"); + } + gpr_free(pollset_set->pollsets); + gpr_free(pollset_set->pollset_sets); + gpr_free(pollset_set->fds); + gpr_free(pollset_set); +} + +static void pollset_set_add_fd(grpc_exec_ctx *exec_ctx, + grpc_pollset_set *pollset_set, grpc_fd *fd) { + size_t i; + gpr_mu_lock(&pollset_set->mu); + if (pollset_set->fd_count == pollset_set->fd_capacity) { + pollset_set->fd_capacity = GPR_MAX(8, 2 * pollset_set->fd_capacity); + pollset_set->fds = gpr_realloc( + pollset_set->fds, pollset_set->fd_capacity * sizeof(*pollset_set->fds)); + } + GRPC_FD_REF(fd, "pollset_set"); + pollset_set->fds[pollset_set->fd_count++] = fd; + for (i = 0; i < pollset_set->pollset_count; i++) { + pollset_add_fd(exec_ctx, pollset_set->pollsets[i], fd); + } + for (i = 0; i < pollset_set->pollset_set_count; i++) { + pollset_set_add_fd(exec_ctx, pollset_set->pollset_sets[i], fd); + } + gpr_mu_unlock(&pollset_set->mu); +} + +static void pollset_set_del_fd(grpc_exec_ctx *exec_ctx, + grpc_pollset_set *pollset_set, grpc_fd *fd) { + size_t i; + gpr_mu_lock(&pollset_set->mu); + for (i = 0; i < pollset_set->fd_count; i++) { + if (pollset_set->fds[i] == fd) { + pollset_set->fd_count--; + GPR_SWAP(grpc_fd *, pollset_set->fds[i], + pollset_set->fds[pollset_set->fd_count]); + GRPC_FD_UNREF(fd, "pollset_set"); + break; + } + } + for (i = 0; i < pollset_set->pollset_set_count; i++) { + pollset_set_del_fd(exec_ctx, pollset_set->pollset_sets[i], fd); + } + gpr_mu_unlock(&pollset_set->mu); +} + +static void pollset_set_add_pollset(grpc_exec_ctx *exec_ctx, + grpc_pollset_set *pollset_set, + grpc_pollset *pollset) { + size_t i, j; + gpr_mu_lock(&pollset_set->mu); + if (pollset_set->pollset_count == pollset_set->pollset_capacity) { + pollset_set->pollset_capacity = + GPR_MAX(8, 2 * pollset_set->pollset_capacity); + pollset_set->pollsets = + gpr_realloc(pollset_set->pollsets, pollset_set->pollset_capacity * + sizeof(*pollset_set->pollsets)); + } + pollset_set->pollsets[pollset_set->pollset_count++] = pollset; + for (i = 0, j = 0; i < pollset_set->fd_count; i++) { + if (fd_is_orphaned(pollset_set->fds[i])) { + GRPC_FD_UNREF(pollset_set->fds[i], "pollset_set"); + } else { + pollset_add_fd(exec_ctx, pollset, pollset_set->fds[i]); + pollset_set->fds[j++] = pollset_set->fds[i]; + } + } + pollset_set->fd_count = j; + gpr_mu_unlock(&pollset_set->mu); +} + +static void pollset_set_del_pollset(grpc_exec_ctx *exec_ctx, + grpc_pollset_set *pollset_set, + grpc_pollset *pollset) { + size_t i; + gpr_mu_lock(&pollset_set->mu); + for (i = 0; i < pollset_set->pollset_count; i++) { + if (pollset_set->pollsets[i] == pollset) { + pollset_set->pollset_count--; + GPR_SWAP(grpc_pollset *, pollset_set->pollsets[i], + pollset_set->pollsets[pollset_set->pollset_count]); + break; + } + } + gpr_mu_unlock(&pollset_set->mu); +} + +static void pollset_set_add_pollset_set(grpc_exec_ctx *exec_ctx, + grpc_pollset_set *bag, + grpc_pollset_set *item) { + size_t i, j; + gpr_mu_lock(&bag->mu); + if (bag->pollset_set_count == bag->pollset_set_capacity) { + bag->pollset_set_capacity = GPR_MAX(8, 2 * bag->pollset_set_capacity); + bag->pollset_sets = + gpr_realloc(bag->pollset_sets, + bag->pollset_set_capacity * sizeof(*bag->pollset_sets)); + } + bag->pollset_sets[bag->pollset_set_count++] = item; + for (i = 0, j = 0; i < bag->fd_count; i++) { + if (fd_is_orphaned(bag->fds[i])) { + GRPC_FD_UNREF(bag->fds[i], "pollset_set"); + } else { + pollset_set_add_fd(exec_ctx, item, bag->fds[i]); + bag->fds[j++] = bag->fds[i]; + } + } + bag->fd_count = j; + gpr_mu_unlock(&bag->mu); +} + +static void pollset_set_del_pollset_set(grpc_exec_ctx *exec_ctx, + grpc_pollset_set *bag, + grpc_pollset_set *item) { + size_t i; + gpr_mu_lock(&bag->mu); + for (i = 0; i < bag->pollset_set_count; i++) { + if (bag->pollset_sets[i] == item) { + bag->pollset_set_count--; + GPR_SWAP(grpc_pollset_set *, bag->pollset_sets[i], + bag->pollset_sets[bag->pollset_set_count]); + break; + } + } + gpr_mu_unlock(&bag->mu); +} + +/******************************************************************************* + * Event engine binding + */ + +static void shutdown_engine(void) { + fd_global_shutdown(); + pollset_global_shutdown(); + polling_island_global_shutdown(); +} + +static const grpc_event_engine_vtable vtable = { + .pollset_size = sizeof(grpc_pollset), + + .fd_create = fd_create, + .fd_wrapped_fd = fd_wrapped_fd, + .fd_orphan = fd_orphan, + .fd_shutdown = fd_shutdown, + .fd_notify_on_read = fd_notify_on_read, + .fd_notify_on_write = fd_notify_on_write, + .fd_get_read_notifier_pollset = fd_get_read_notifier_pollset, + + .pollset_init = pollset_init, + .pollset_shutdown = pollset_shutdown, + .pollset_reset = pollset_reset, + .pollset_destroy = pollset_destroy, + .pollset_work = pollset_work, + .pollset_kick = pollset_kick, + .pollset_add_fd = pollset_add_fd, + + .pollset_set_create = pollset_set_create, + .pollset_set_destroy = pollset_set_destroy, + .pollset_set_add_pollset = pollset_set_add_pollset, + .pollset_set_del_pollset = pollset_set_del_pollset, + .pollset_set_add_pollset_set = pollset_set_add_pollset_set, + .pollset_set_del_pollset_set = pollset_set_del_pollset_set, + .pollset_set_add_fd = pollset_set_add_fd, + .pollset_set_del_fd = pollset_set_del_fd, + + .kick_poller = kick_poller, + + .shutdown_engine = shutdown_engine, +}; + +/* It is possible that GLIBC has epoll but the underlying kernel doesn't. + * Create a dummy epoll_fd to make sure epoll support is available */ +static bool is_epoll_available() { + int fd = epoll_create1(EPOLL_CLOEXEC); + if (fd < 0) { + gpr_log( + GPR_ERROR, + "epoll_create1 failed with error: %d. Not using epoll polling engine", + fd); + return false; + } + close(fd); + return true; +} + +const grpc_event_engine_vtable *grpc_init_epoll_linux(void) { + if (!is_epoll_available()) { + return NULL; + } + + fd_global_init(); + pollset_global_init(); + polling_island_global_init(); + return &vtable; +} + +#else /* defined(GPR_LINUX_EPOLL) */ +/* If GPR_LINUX_EPOLL is not defined, it means epoll is not available. Return + * NULL */ +const grpc_event_engine_vtable *grpc_init_epoll_linux(void) { return NULL; } + +#endif /* !defined(GPR_LINUX_EPOLL) */ diff --git a/src/core/lib/iomgr/ev_epoll_linux.h b/src/core/lib/iomgr/ev_epoll_linux.h new file mode 100644 index 0000000000..8c819975a4 --- /dev/null +++ b/src/core/lib/iomgr/ev_epoll_linux.h @@ -0,0 +1,41 @@ +/* + * + * 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. + * + */ + +#ifndef GRPC_CORE_LIB_IOMGR_EV_EPOLL_LINUX_H +#define GRPC_CORE_LIB_IOMGR_EV_EPOLL_LINUX_H + +#include "src/core/lib/iomgr/ev_posix.h" + +const grpc_event_engine_vtable *grpc_init_epoll_linux(void); + +#endif /* GRPC_CORE_LIB_IOMGR_EV_EPOLL_LINUX_H */ diff --git a/src/core/lib/iomgr/ev_posix.c b/src/core/lib/iomgr/ev_posix.c index 6477b05dcd..2b15967adc 100644 --- a/src/core/lib/iomgr/ev_posix.c +++ b/src/core/lib/iomgr/ev_posix.c @@ -44,6 +44,7 @@ #include <grpc/support/string_util.h> #include <grpc/support/useful.h> +#include "src/core/lib/iomgr/ev_epoll_linux.h" #include "src/core/lib/iomgr/ev_poll_and_epoll_posix.h" #include "src/core/lib/iomgr/ev_poll_posix.h" #include "src/core/lib/support/env.h" @@ -62,7 +63,9 @@ typedef struct { } event_engine_factory; static const event_engine_factory g_factories[] = { - {"poll", grpc_init_poll_posix}, {"legacy", grpc_init_poll_and_epoll_posix}, + {"epoll", grpc_init_epoll_linux}, + {"poll", grpc_init_poll_posix}, + {"legacy", grpc_init_poll_and_epoll_posix}, }; static void add(const char *beg, const char *end, char ***ss, size_t *ns) { @@ -163,11 +166,6 @@ void grpc_fd_notify_on_write(grpc_exec_ctx *exec_ctx, grpc_fd *fd, g_event_engine->fd_notify_on_write(exec_ctx, fd, closure); } -grpc_pollset *grpc_fd_get_read_notifier_pollset(grpc_exec_ctx *exec_ctx, - grpc_fd *fd) { - return g_event_engine->fd_get_read_notifier_pollset(exec_ctx, fd); -} - size_t grpc_pollset_size(void) { return g_event_engine->pollset_size; } void grpc_pollset_init(grpc_pollset *pollset, gpr_mu **mu) { diff --git a/src/python/grpcio/grpc_core_dependencies.py b/src/python/grpcio/grpc_core_dependencies.py index 1a04021c27..4fbfd65c58 100644 --- a/src/python/grpcio/grpc_core_dependencies.py +++ b/src/python/grpcio/grpc_core_dependencies.py @@ -94,6 +94,7 @@ CORE_SOURCE_FILES = [ 'src/core/lib/iomgr/endpoint.c', 'src/core/lib/iomgr/endpoint_pair_posix.c', 'src/core/lib/iomgr/endpoint_pair_windows.c', + 'src/core/lib/iomgr/ev_epoll_linux.c', 'src/core/lib/iomgr/ev_poll_and_epoll_posix.c', 'src/core/lib/iomgr/ev_poll_posix.c', 'src/core/lib/iomgr/ev_posix.c', diff --git a/tools/doxygen/Doxyfile.core.internal b/tools/doxygen/Doxyfile.core.internal index 10c8cbd549..3a73b4b181 100644 --- a/tools/doxygen/Doxyfile.core.internal +++ b/tools/doxygen/Doxyfile.core.internal @@ -807,6 +807,7 @@ src/core/lib/http/parser.h \ src/core/lib/iomgr/closure.h \ src/core/lib/iomgr/endpoint.h \ src/core/lib/iomgr/endpoint_pair.h \ +src/core/lib/iomgr/ev_epoll_linux.h \ src/core/lib/iomgr/ev_poll_and_epoll_posix.h \ src/core/lib/iomgr/ev_poll_posix.h \ src/core/lib/iomgr/ev_posix.h \ @@ -958,6 +959,7 @@ src/core/lib/iomgr/closure.c \ src/core/lib/iomgr/endpoint.c \ src/core/lib/iomgr/endpoint_pair_posix.c \ src/core/lib/iomgr/endpoint_pair_windows.c \ +src/core/lib/iomgr/ev_epoll_linux.c \ src/core/lib/iomgr/ev_poll_and_epoll_posix.c \ src/core/lib/iomgr/ev_poll_posix.c \ src/core/lib/iomgr/ev_posix.c \ diff --git a/tools/run_tests/run_tests.py b/tools/run_tests/run_tests.py index f7282dddb8..1c0c32d3c0 100755 --- a/tools/run_tests/run_tests.py +++ b/tools/run_tests/run_tests.py @@ -157,7 +157,7 @@ class CLanguage(object): 'windows': ['all'], 'mac': ['all'], 'posix': ['all'], - 'linux': ['poll', 'legacy'] + 'linux': ['poll', 'epoll', 'legacy'], } for target in binaries: polling_strategies = (POLLING_STRATEGIES[self.platform] @@ -890,7 +890,7 @@ for l in languages: language_make_options=[] if any(language.make_options() for language in languages): - if not 'gcov' in args.config and len(languages) != 1: + if len(languages) != 1: print 'languages with custom make options cannot be built simultaneously with other languages' sys.exit(1) else: diff --git a/tools/run_tests/sources_and_headers.json b/tools/run_tests/sources_and_headers.json index fd522ee173..dba31c58f7 100644 --- a/tools/run_tests/sources_and_headers.json +++ b/tools/run_tests/sources_and_headers.json @@ -5649,6 +5649,7 @@ "src/core/lib/iomgr/closure.h", "src/core/lib/iomgr/endpoint.h", "src/core/lib/iomgr/endpoint_pair.h", + "src/core/lib/iomgr/ev_epoll_linux.h", "src/core/lib/iomgr/ev_poll_and_epoll_posix.h", "src/core/lib/iomgr/ev_poll_posix.h", "src/core/lib/iomgr/ev_posix.h", @@ -5751,6 +5752,8 @@ "src/core/lib/iomgr/endpoint_pair.h", "src/core/lib/iomgr/endpoint_pair_posix.c", "src/core/lib/iomgr/endpoint_pair_windows.c", + "src/core/lib/iomgr/ev_epoll_linux.c", + "src/core/lib/iomgr/ev_epoll_linux.h", "src/core/lib/iomgr/ev_poll_and_epoll_posix.c", "src/core/lib/iomgr/ev_poll_and_epoll_posix.h", "src/core/lib/iomgr/ev_poll_posix.c", diff --git a/vsprojects/vcxproj/grpc/grpc.vcxproj b/vsprojects/vcxproj/grpc/grpc.vcxproj index 1824b9272d..4915103f82 100644 --- a/vsprojects/vcxproj/grpc/grpc.vcxproj +++ b/vsprojects/vcxproj/grpc/grpc.vcxproj @@ -316,6 +316,7 @@ <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\closure.h" /> <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint.h" /> <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint_pair.h" /> + <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_epoll_linux.h" /> <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_poll_and_epoll_posix.h" /> <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_poll_posix.h" /> <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_posix.h" /> @@ -487,6 +488,8 @@ </ClCompile> <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint_pair_windows.c"> </ClCompile> + <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_epoll_linux.c"> + </ClCompile> <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_poll_and_epoll_posix.c"> </ClCompile> <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_poll_posix.c"> diff --git a/vsprojects/vcxproj/grpc/grpc.vcxproj.filters b/vsprojects/vcxproj/grpc/grpc.vcxproj.filters index e77b79e4c2..3efac5fe79 100644 --- a/vsprojects/vcxproj/grpc/grpc.vcxproj.filters +++ b/vsprojects/vcxproj/grpc/grpc.vcxproj.filters @@ -55,6 +55,9 @@ <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint_pair_windows.c"> <Filter>src\core\lib\iomgr</Filter> </ClCompile> + <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_epoll_linux.c"> + <Filter>src\core\lib\iomgr</Filter> + </ClCompile> <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_poll_and_epoll_posix.c"> <Filter>src\core\lib\iomgr</Filter> </ClCompile> @@ -686,6 +689,9 @@ <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint_pair.h"> <Filter>src\core\lib\iomgr</Filter> </ClInclude> + <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_epoll_linux.h"> + <Filter>src\core\lib\iomgr</Filter> + </ClInclude> <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_poll_and_epoll_posix.h"> <Filter>src\core\lib\iomgr</Filter> </ClInclude> diff --git a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj index bc5b153534..3248d1910d 100644 --- a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj +++ b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj @@ -305,6 +305,7 @@ <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\closure.h" /> <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint.h" /> <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint_pair.h" /> + <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_epoll_linux.h" /> <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_poll_and_epoll_posix.h" /> <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_poll_posix.h" /> <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_posix.h" /> @@ -455,6 +456,8 @@ </ClCompile> <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint_pair_windows.c"> </ClCompile> + <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_epoll_linux.c"> + </ClCompile> <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_poll_and_epoll_posix.c"> </ClCompile> <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_poll_posix.c"> diff --git a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters index 792a2dbdaa..ac45c5dfba 100644 --- a/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters +++ b/vsprojects/vcxproj/grpc_unsecure/grpc_unsecure.vcxproj.filters @@ -58,6 +58,9 @@ <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint_pair_windows.c"> <Filter>src\core\lib\iomgr</Filter> </ClCompile> + <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_epoll_linux.c"> + <Filter>src\core\lib\iomgr</Filter> + </ClCompile> <ClCompile Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_poll_and_epoll_posix.c"> <Filter>src\core\lib\iomgr</Filter> </ClCompile> @@ -596,6 +599,9 @@ <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\endpoint_pair.h"> <Filter>src\core\lib\iomgr</Filter> </ClInclude> + <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_epoll_linux.h"> + <Filter>src\core\lib\iomgr</Filter> + </ClInclude> <ClInclude Include="$(SolutionDir)\..\src\core\lib\iomgr\ev_poll_and_epoll_posix.h"> <Filter>src\core\lib\iomgr</Filter> </ClInclude> |