third_party/grpc/src/core/iomgr/wakeup_fd_posix.c

/*
 *
 * Copyright 2015, Google Inc.
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 * modification, are permitted provided that the following conditions are
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 *
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 * 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
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#include <grpc/support/port_platform.h>

#ifdef GPR_POSIX_WAKEUP_FD

#include "src/core/iomgr/wakeup_fd_posix.h"
#include "src/core/iomgr/wakeup_fd_pipe.h"
#include <stddef.h>

static const grpc_wakeup_fd_vtable *wakeup_fd_vtable = NULL;
int grpc_allow_specialized_wakeup_fd = 1;

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 {
    wakeup_fd_vtable = &grpc_pipe_wakeup_fd_vtable;
  }
}

void grpc_wakeup_fd_global_destroy(void) { wakeup_fd_vtable = NULL; }

void grpc_wakeup_fd_init(grpc_wakeup_fd *fd_info) {
  wakeup_fd_vtable->init(fd_info);
}

void grpc_wakeup_fd_consume_wakeup(grpc_wakeup_fd *fd_info) {
  wakeup_fd_vtable->consume(fd_info);
}

void grpc_wakeup_fd_wakeup(grpc_wakeup_fd *fd_info) {
  wakeup_fd_vtable->wakeup(fd_info);
}

void grpc_wakeup_fd_destroy(grpc_wakeup_fd *fd_info) {
  wakeup_fd_vtable->destroy(fd_info);
}

#endif /* GPR_POSIX_WAKEUP_FD */