/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a copy

 * of this software and associated documentation files (the "Software"), to

 * deal in the Software without restriction, including without limitation the

 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or

 * sell copies of the Software, and to permit persons to whom the Software is

 * furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included in

 * all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS

 * IN THE SOFTWARE.

 */

#include "uv.h"

#include "task.h"

#ifndef _WIN32

#include <unistd.h>

#endif

TEST_IMPL(kill_invalid_signum) {

  uv_pid_t pid;

  pid = uv_os_getpid();

  ASSERT(uv_kill(pid, -1) == UV_EINVAL);

#ifdef _WIN32

  /* NSIG is not available on all platforms. */

  ASSERT(uv_kill(pid, NSIG) == UV_EINVAL);

#endif

  ASSERT(uv_kill(pid, 4096) == UV_EINVAL);

  MAKE_VALGRIND_HAPPY();

  return 0;

}

/* For Windows we test only signum handling */

#ifdef _WIN32

static void signum_test_cb(uv_signal_t* handle, int signum) {

  FATAL("signum_test_cb should not be called");

}

TEST_IMPL(win32_signum_number) {

  uv_signal_t signal;

  uv_loop_t* loop;

  loop = uv_default_loop();

  uv_signal_init(loop, &signal);

  ASSERT(uv_signal_start(&signal, signum_test_cb, 0) == UV_EINVAL);

  ASSERT(uv_signal_start(&signal, signum_test_cb, SIGINT) == 0);

  ASSERT(uv_signal_start(&signal, signum_test_cb, SIGBREAK) == 0);

  ASSERT(uv_signal_start(&signal, signum_test_cb, SIGHUP) == 0);

  ASSERT(uv_signal_start(&signal, signum_test_cb, SIGWINCH) == 0);

  ASSERT(uv_signal_start(&signal, signum_test_cb, SIGILL) == 0);

  ASSERT(uv_signal_start(&signal, signum_test_cb, SIGABRT_COMPAT) == 0);

  ASSERT(uv_signal_start(&signal, signum_test_cb, SIGFPE) == 0);

  ASSERT(uv_signal_start(&signal, signum_test_cb, SIGSEGV) == 0);

  ASSERT(uv_signal_start(&signal, signum_test_cb, SIGTERM) == 0);

  ASSERT(uv_signal_start(&signal, signum_test_cb, SIGABRT) == 0);

  ASSERT(uv_signal_start(&signal, signum_test_cb, -1) == UV_EINVAL);

  ASSERT(uv_signal_start(&signal, signum_test_cb, NSIG) == UV_EINVAL);

  ASSERT(uv_signal_start(&signal, signum_test_cb, 1024) == UV_EINVAL);

  MAKE_VALGRIND_HAPPY();

  return 0;

}

#else

#include <errno.h>

#include <signal.h>

#include <stdarg.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

#define NSIGNALS  10

struct timer_ctx {

  unsigned int ncalls;

  uv_timer_t handle;

  int signum;

};

struct signal_ctx {

  enum { CLOSE, STOP, NOOP } stop_or_close;

  unsigned int ncalls;

  uv_signal_t handle;

  int signum;

  int one_shot;

};

static void signal_cb(uv_signal_t* handle, int signum) {

  struct signal_ctx* ctx = container_of(handle, struct signal_ctx, handle);

  ASSERT(signum == ctx->signum);

  if (++ctx->ncalls == NSIGNALS) {

    if (ctx->stop_or_close == STOP)

      uv_signal_stop(handle);

    else if (ctx->stop_or_close == CLOSE)

      uv_close((uv_handle_t*)handle, NULL);

    else

      ASSERT(0);

  }

}

static void signal_cb_one_shot(uv_signal_t* handle, int signum) {

  struct signal_ctx* ctx = container_of(handle, struct signal_ctx, handle);

  ASSERT(signum == ctx->signum);

  ASSERT(++ctx->ncalls == 1);

  if (ctx->stop_or_close == CLOSE)

    uv_close((uv_handle_t*)handle, NULL);

}

static void timer_cb(uv_timer_t* handle) {

  struct timer_ctx* ctx = container_of(handle, struct timer_ctx, handle);

  raise(ctx->signum);

  if (++ctx->ncalls == NSIGNALS)

    uv_close((uv_handle_t*)handle, NULL);

}

static void start_watcher(uv_loop_t* loop,

                          int signum,

                          struct signal_ctx* ctx,

                          int one_shot) {

  ctx->ncalls = 0;

  ctx->signum = signum;

  ctx->stop_or_close = CLOSE;

  ctx->one_shot = one_shot;

  ASSERT(0 == uv_signal_init(loop, &ctx->handle));

  if (one_shot)

    ASSERT(0 == uv_signal_start_oneshot(&ctx->handle, signal_cb_one_shot, signum));

  else

    ASSERT(0 == uv_signal_start(&ctx->handle, signal_cb, signum));

}

static void start_timer(uv_loop_t* loop, int signum, struct timer_ctx* ctx) {

  ctx->ncalls = 0;

  ctx->signum = signum;

  ASSERT(0 == uv_timer_init(loop, &ctx->handle));

  ASSERT(0 == uv_timer_start(&ctx->handle, timer_cb, 5, 5));

}

TEST_IMPL(we_get_signal) {

  struct signal_ctx sc;

  struct timer_ctx tc;

  uv_loop_t* loop;

  loop = uv_default_loop();

  start_timer(loop, SIGCHLD, &tc);

  start_watcher(loop, SIGCHLD, &sc, 0);

  sc.stop_or_close = STOP; /* stop, don't close the signal handle */

  ASSERT(0 == uv_run(loop, UV_RUN_DEFAULT));

  ASSERT(tc.ncalls == NSIGNALS);

  ASSERT(sc.ncalls == NSIGNALS);

  start_timer(loop, SIGCHLD, &tc);

  ASSERT(0 == uv_run(loop, UV_RUN_DEFAULT));

  ASSERT(tc.ncalls == NSIGNALS);

  ASSERT(sc.ncalls == NSIGNALS);

  sc.ncalls = 0;

  sc.stop_or_close = CLOSE; /* now close it when it's done */

  uv_signal_start(&sc.handle, signal_cb, SIGCHLD);

  start_timer(loop, SIGCHLD, &tc);

  ASSERT(0 == uv_run(loop, UV_RUN_DEFAULT));

  ASSERT(tc.ncalls == NSIGNALS);

  ASSERT(sc.ncalls == NSIGNALS);

  MAKE_VALGRIND_HAPPY();

  return 0;

}

TEST_IMPL(we_get_signals) {

  struct signal_ctx sc[4];

  struct timer_ctx tc[2];

  uv_loop_t* loop;

  unsigned int i;

  loop = uv_default_loop();

  start_watcher(loop, SIGUSR1, sc + 0, 0);

  start_watcher(loop, SIGUSR1, sc + 1, 0);

  start_watcher(loop, SIGUSR2, sc + 2, 0);

  start_watcher(loop, SIGUSR2, sc + 3, 0);

  start_timer(loop, SIGUSR1, tc + 0);

  start_timer(loop, SIGUSR2, tc + 1);

  ASSERT(0 == uv_run(loop, UV_RUN_DEFAULT));

  for (i = 0; i < ARRAY_SIZE(sc); i++)

    ASSERT(sc[i].ncalls == NSIGNALS);

  for (i = 0; i < ARRAY_SIZE(tc); i++)

    ASSERT(tc[i].ncalls == NSIGNALS);

  MAKE_VALGRIND_HAPPY();

  return 0;

}

TEST_IMPL(we_get_signal_one_shot) {

  struct signal_ctx sc;

  struct timer_ctx tc;

  uv_loop_t* loop;

  loop = uv_default_loop();

  start_timer(loop, SIGCHLD, &tc);

  start_watcher(loop, SIGCHLD, &sc, 1);

  sc.stop_or_close = NOOP;

  ASSERT(0 == uv_run(loop, UV_RUN_DEFAULT));

  ASSERT(tc.ncalls == NSIGNALS);

  ASSERT(sc.ncalls == 1);

  start_timer(loop, SIGCHLD, &tc);

  ASSERT(0 == uv_run(loop, UV_RUN_DEFAULT));

  ASSERT(sc.ncalls == 1);

  sc.ncalls = 0;

  sc.stop_or_close = CLOSE; /* now close it when it's done */

  uv_signal_start_oneshot(&sc.handle, signal_cb_one_shot, SIGCHLD);

  start_timer(loop, SIGCHLD, &tc);

  ASSERT(0 == uv_run(loop, UV_RUN_DEFAULT));

  ASSERT(tc.ncalls == NSIGNALS);

  ASSERT(sc.ncalls == 1);

  MAKE_VALGRIND_HAPPY();

  return 0;

}

TEST_IMPL(we_get_signals_mixed) {

  struct signal_ctx sc[4];

  struct timer_ctx tc;

  uv_loop_t* loop;

  loop = uv_default_loop();

  /* 2 one-shot */

  start_timer(loop, SIGCHLD, &tc);

  start_watcher(loop, SIGCHLD, sc + 0, 1);

  start_watcher(loop, SIGCHLD, sc + 1, 1);

  sc[0].stop_or_close = CLOSE;

  sc[1].stop_or_close = CLOSE;

  ASSERT(0 == uv_run(loop, UV_RUN_DEFAULT));

  ASSERT(tc.ncalls == NSIGNALS);

  ASSERT(sc[0].ncalls == 1);

  ASSERT(sc[1].ncalls == 1);

  /* 2 one-shot, 1 normal then remove normal */

  start_timer(loop, SIGCHLD, &tc);

  start_watcher(loop, SIGCHLD, sc + 0, 1);

  start_watcher(loop, SIGCHLD, sc + 1, 1);

  sc[0].stop_or_close = CLOSE;

  sc[1].stop_or_close = CLOSE;

  start_watcher(loop, SIGCHLD, sc + 2, 0);

  uv_close((uv_handle_t*)&(sc[2]).handle, NULL);

  ASSERT(0 == uv_run(loop, UV_RUN_DEFAULT));

  ASSERT(tc.ncalls == NSIGNALS);

  ASSERT(sc[0].ncalls == 1);

  ASSERT(sc[1].ncalls == 1);

  ASSERT(sc[2].ncalls == 0);

  /* 2 normal, 1 one-shot then remove one-shot */

  start_timer(loop, SIGCHLD, &tc);

  start_watcher(loop, SIGCHLD, sc + 0, 0);

  start_watcher(loop, SIGCHLD, sc + 1, 0);

  sc[0].stop_or_close = CLOSE;

  sc[1].stop_or_close = CLOSE;

  start_watcher(loop, SIGCHLD, sc + 2, 1);

  uv_close((uv_handle_t*)&(sc[2]).handle, NULL);

  ASSERT(0 == uv_run(loop, UV_RUN_DEFAULT));

  ASSERT(tc.ncalls == NSIGNALS);

  ASSERT(sc[0].ncalls == NSIGNALS);

  ASSERT(sc[1].ncalls == NSIGNALS);

  ASSERT(sc[2].ncalls == 0);

  /* 2 normal, 2 one-shot then remove 2 normal */

  start_timer(loop, SIGCHLD, &tc);

  start_watcher(loop, SIGCHLD, sc + 0, 0);

  start_watcher(loop, SIGCHLD, sc + 1, 0);

  start_watcher(loop, SIGCHLD, sc + 2, 1);

  start_watcher(loop, SIGCHLD, sc + 3, 1);

  sc[2].stop_or_close = CLOSE;

  sc[3].stop_or_close = CLOSE;

  uv_close((uv_handle_t*)&(sc[0]).handle, NULL);

  uv_close((uv_handle_t*)&(sc[1]).handle, NULL);

  ASSERT(0 == uv_run(loop, UV_RUN_DEFAULT));

  ASSERT(tc.ncalls == NSIGNALS);

  ASSERT(sc[0].ncalls == 0);

  ASSERT(sc[1].ncalls == 0);

  ASSERT(sc[2].ncalls == 1);

  ASSERT(sc[2].ncalls == 1);

  /* 1 normal, 1 one-shot, 2 normal then remove 1st normal, 2nd normal */

  start_timer(loop, SIGCHLD, &tc);

  start_watcher(loop, SIGCHLD, sc + 0, 0);

  start_watcher(loop, SIGCHLD, sc + 1, 1);

  start_watcher(loop, SIGCHLD, sc + 2, 0);

  start_watcher(loop, SIGCHLD, sc + 3, 0);

  sc[3].stop_or_close = CLOSE;

  uv_close((uv_handle_t*)&(sc[0]).handle, NULL);

  uv_close((uv_handle_t*)&(sc[2]).handle, NULL);

  ASSERT(0 == uv_run(loop, UV_RUN_DEFAULT));

  ASSERT(tc.ncalls == NSIGNALS);

  ASSERT(sc[0].ncalls == 0);

  ASSERT(sc[1].ncalls == 1);

  ASSERT(sc[2].ncalls == 0);

  ASSERT(sc[3].ncalls == NSIGNALS);

  MAKE_VALGRIND_HAPPY();

  return 0;

}

#endif /* _WIN32 */