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/*
*
* 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.
*
*/
#include "src/core/lib/iomgr/port.h"
#ifdef GRPC_POSIX_WAKEUP_FD
#include <stddef.h>
#include "src/core/lib/iomgr/wakeup_fd_cv.h"
#include "src/core/lib/iomgr/wakeup_fd_pipe.h"
#include "src/core/lib/iomgr/wakeup_fd_posix.h"
extern grpc_wakeup_fd_vtable grpc_cv_wakeup_fd_vtable;
static const grpc_wakeup_fd_vtable *wakeup_fd_vtable = NULL;
int grpc_allow_specialized_wakeup_fd = 1;
int grpc_allow_pipe_wakeup_fd = 1;
int has_real_wakeup_fd = 1;
int cv_wakeup_fds_enabled = 0;
void grpc_wakeup_fd_global_init(void) {
if (grpc_allow_specialized_wakeup_fd &&
grpc_specialized_wakeup_fd_vtable.check_availability()) {
wakeup_fd_vtable = &grpc_specialized_wakeup_fd_vtable;
} else if (grpc_allow_pipe_wakeup_fd &&
grpc_pipe_wakeup_fd_vtable.check_availability()) {
wakeup_fd_vtable = &grpc_pipe_wakeup_fd_vtable;
} else {
has_real_wakeup_fd = 0;
}
}
void grpc_wakeup_fd_global_destroy(void) { wakeup_fd_vtable = NULL; }
int grpc_has_wakeup_fd(void) { return has_real_wakeup_fd; }
int grpc_cv_wakeup_fds_enabled(void) { return cv_wakeup_fds_enabled; }
void grpc_enable_cv_wakeup_fds(int enable) { cv_wakeup_fds_enabled = enable; }
grpc_error *grpc_wakeup_fd_init(grpc_wakeup_fd *fd_info) {
if (cv_wakeup_fds_enabled) {
return grpc_cv_wakeup_fd_vtable.init(fd_info);
}
return wakeup_fd_vtable->init(fd_info);
}
grpc_error *grpc_wakeup_fd_consume_wakeup(grpc_wakeup_fd *fd_info) {
if (cv_wakeup_fds_enabled) {
return grpc_cv_wakeup_fd_vtable.consume(fd_info);
}
return wakeup_fd_vtable->consume(fd_info);
}
grpc_error *grpc_wakeup_fd_wakeup(grpc_wakeup_fd *fd_info) {
if (cv_wakeup_fds_enabled) {
return grpc_cv_wakeup_fd_vtable.wakeup(fd_info);
}
return wakeup_fd_vtable->wakeup(fd_info);
}
void grpc_wakeup_fd_destroy(grpc_wakeup_fd *fd_info) {
if (cv_wakeup_fds_enabled) {
grpc_cv_wakeup_fd_vtable.destroy(fd_info);
} else {
wakeup_fd_vtable->destroy(fd_info);
}
}
#endif /* GRPC_POSIX_WAKEUP_FD */
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