--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/third_party/libuv/test/runner-unix.c	Wed Jan 14 19:39:52 2026 -0800
@@ -0,0 +1,457 @@
+/* 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 "runner-unix.h"
+#include "runner.h"
+
+#include <limits.h>
+#include <stdint.h> /* uintptr_t */
+
+#include <errno.h>
+#include <unistd.h> /* usleep */
+#include <string.h> /* strdup */
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <signal.h>
+#include <sys/wait.h>
+#include <sys/stat.h>
+#include <assert.h>
+
+#include <sys/select.h>
+#include <sys/time.h>
+#include <pthread.h>
+
+#ifdef __APPLE__
+#include <TargetConditionals.h>
+#endif
+
+extern char** environ;
+
+static void closefd(int fd) {
+  if (close(fd) == 0 || errno == EINTR || errno == EINPROGRESS)
+    return;
+
+  perror("close");
+  abort();
+}
+
+
+void notify_parent_process(void) {
+  char* arg;
+  int fd;
+
+  arg = getenv("UV_TEST_RUNNER_FD");
+  if (arg == NULL)
+    return;
+
+  fd = atoi(arg);
+  assert(fd > STDERR_FILENO);
+  unsetenv("UV_TEST_RUNNER_FD");
+  closefd(fd);
+}
+
+
+/* Do platform-specific initialization. */
+void platform_init(int argc, char **argv) {
+  /* Disable stdio output buffering. */
+  setvbuf(stdout, NULL, _IONBF, 0);
+  setvbuf(stderr, NULL, _IONBF, 0);
+  signal(SIGPIPE, SIG_IGN);
+  snprintf(executable_path, sizeof(executable_path), "%s", argv[0]);
+}
+
+
+/* Invoke "argv[0] test-name [test-part]". Store process info in *p. Make sure
+ * that all stdio output of the processes is buffered up. */
+int process_start(char* name, char* part, process_info_t* p, int is_helper) {
+  FILE* stdout_file;
+  int stdout_fd;
+  const char* arg;
+  char* args[16];
+  int pipefd[2];
+  char fdstr[8];
+  ssize_t rc;
+  int n;
+  pid_t pid;
+
+  arg = getenv("UV_USE_VALGRIND");
+  n = 0;
+
+  /* Disable valgrind for helpers, it complains about helpers leaking memory.
+   * They're killed after the test and as such never get a chance to clean up.
+   */
+  if (is_helper == 0 && arg != NULL && atoi(arg) != 0) {
+    args[n++] = "valgrind";
+    args[n++] = "--quiet";
+    args[n++] = "--leak-check=full";
+    args[n++] = "--show-reachable=yes";
+    args[n++] = "--error-exitcode=125";
+  }
+
+  args[n++] = executable_path;
+  args[n++] = name;
+  args[n++] = part;
+  args[n++] = NULL;
+
+  stdout_file = tmpfile();
+  stdout_fd = fileno(stdout_file);
+  if (!stdout_file) {
+    perror("tmpfile");
+    return -1;
+  }
+
+  if (is_helper) {
+    if (pipe(pipefd)) {
+      perror("pipe");
+      return -1;
+    }
+
+    snprintf(fdstr, sizeof(fdstr), "%d", pipefd[1]);
+    if (setenv("UV_TEST_RUNNER_FD", fdstr, /* overwrite */ 1)) {
+      perror("setenv");
+      return -1;
+    }
+  }
+
+  p->terminated = 0;
+  p->status = 0;
+
+#if defined(__APPLE__) && (TARGET_OS_TV || TARGET_OS_WATCH)
+  pid = -1;
+#else
+  pid = fork();
+#endif
+
+  if (pid < 0) {
+    perror("fork");
+    return -1;
+  }
+
+  if (pid == 0) {
+    /* child */
+    if (is_helper)
+      closefd(pipefd[0]);
+    dup2(stdout_fd, STDOUT_FILENO);
+    dup2(stdout_fd, STDERR_FILENO);
+#if !(defined(__APPLE__) && (TARGET_OS_TV || TARGET_OS_WATCH))
+    execve(args[0], args, environ);
+#endif
+    perror("execve()");
+    _exit(127);
+  }
+
+  /* parent */
+  p->pid = pid;
+  p->name = strdup(name);
+  p->stdout_file = stdout_file;
+
+  if (!is_helper)
+    return 0;
+
+  closefd(pipefd[1]);
+  unsetenv("UV_TEST_RUNNER_FD");
+
+  do
+    rc = read(pipefd[0], &n, 1);
+  while (rc == -1 && errno == EINTR);
+
+  closefd(pipefd[0]);
+
+  if (rc == -1) {
+    perror("read");
+    return -1;
+  }
+
+  if (rc > 0) {
+    fprintf(stderr, "EOF expected but got data.\n");
+    return -1;
+  }
+
+  return 0;
+}
+
+
+typedef struct {
+  int pipe[2];
+  process_info_t* vec;
+  int n;
+} dowait_args;
+
+
+/* This function is run inside a pthread. We do this so that we can possibly
+ * timeout.
+ */
+static void* dowait(void* data) {
+  dowait_args* args = data;
+
+  int i, r;
+  process_info_t* p;
+
+  for (i = 0; i < args->n; i++) {
+    p = &args->vec[i];
+    if (p->terminated) continue;
+    r = waitpid(p->pid, &p->status, 0);
+    if (r < 0) {
+      perror("waitpid");
+      return NULL;
+    }
+    p->terminated = 1;
+  }
+
+  if (args->pipe[1] >= 0) {
+    /* Write a character to the main thread to notify it about this. */
+    ssize_t r;
+
+    do
+      r = write(args->pipe[1], "", 1);
+    while (r == -1 && errno == EINTR);
+  }
+
+  return NULL;
+}
+
+
+/* Wait for all `n` processes in `vec` to terminate. Time out after `timeout`
+ * msec, or never if timeout == -1. Return 0 if all processes are terminated,
+ * -1 on error, -2 on timeout. */
+int process_wait(process_info_t* vec, int n, int timeout) {
+  int i;
+  int r;
+  int retval;
+  process_info_t* p;
+  dowait_args args;
+  pthread_t tid;
+  pthread_attr_t attr;
+  unsigned int elapsed_ms;
+  struct timeval timebase;
+  struct timeval tv;
+  fd_set fds;
+
+  args.vec = vec;
+  args.n = n;
+  args.pipe[0] = -1;
+  args.pipe[1] = -1;
+
+  /* The simple case is where there is no timeout */
+  if (timeout == -1) {
+    dowait(&args);
+    return 0;
+  }
+
+  /* Hard case. Do the wait with a timeout.
+   *
+   * Assumption: we are the only ones making this call right now. Otherwise
+   * we'd need to lock vec.
+   */
+
+  r = pipe((int*)&(args.pipe));
+  if (r) {
+    perror("pipe()");
+    return -1;
+  }
+
+  if (pthread_attr_init(&attr))
+    abort();
+
+#if defined(__MVS__)
+  if (pthread_attr_setstacksize(&attr, 1024 * 1024))
+#else
+  if (pthread_attr_setstacksize(&attr, 256 * 1024))
+#endif
+    abort();
+
+  r = pthread_create(&tid, &attr, dowait, &args);
+
+  if (pthread_attr_destroy(&attr))
+    abort();
+
+  if (r) {
+    perror("pthread_create()");
+    retval = -1;
+    goto terminate;
+  }
+
+  if (gettimeofday(&timebase, NULL))
+    abort();
+
+  tv = timebase;
+  for (;;) {
+    /* Check that gettimeofday() doesn't jump back in time. */
+    assert(tv.tv_sec > timebase.tv_sec ||
+           (tv.tv_sec == timebase.tv_sec && tv.tv_usec >= timebase.tv_usec));
+
+    elapsed_ms =
+        (tv.tv_sec - timebase.tv_sec) * 1000 +
+        (tv.tv_usec / 1000) -
+        (timebase.tv_usec / 1000);
+
+    r = 0;  /* Timeout. */
+    if (elapsed_ms >= (unsigned) timeout)
+      break;
+
+    tv.tv_sec = (timeout - elapsed_ms) / 1000;
+    tv.tv_usec = (timeout - elapsed_ms) % 1000 * 1000;
+
+    FD_ZERO(&fds);
+    FD_SET(args.pipe[0], &fds);
+
+    r = select(args.pipe[0] + 1, &fds, NULL, NULL, &tv);
+    if (!(r == -1 && errno == EINTR))
+      break;
+
+    if (gettimeofday(&tv, NULL))
+      abort();
+  }
+
+  if (r == -1) {
+    perror("select()");
+    retval = -1;
+
+  } else if (r) {
+    /* The thread completed successfully. */
+    retval = 0;
+
+  } else {
+    /* Timeout. Kill all the children. */
+    for (i = 0; i < n; i++) {
+      p = &vec[i];
+      kill(p->pid, SIGTERM);
+    }
+    retval = -2;
+  }
+
+  if (pthread_join(tid, NULL))
+    abort();
+
+terminate:
+  closefd(args.pipe[0]);
+  closefd(args.pipe[1]);
+  return retval;
+}
+
+
+/* Returns the number of bytes in the stdio output buffer for process `p`. */
+long int process_output_size(process_info_t *p) {
+  /* Size of the p->stdout_file */
+  struct stat buf;
+
+  memset(&buf, 0, sizeof(buf));
+  int r = fstat(fileno(p->stdout_file), &buf);
+  if (r < 0) {
+    return -1;
+  }
+
+  return (long)buf.st_size;
+}
+
+
+/* Copy the contents of the stdio output buffer to `fd`. */
+int process_copy_output(process_info_t* p, FILE* stream) {
+  char buf[1024];
+  int partial;
+  int r;
+
+  r = fseek(p->stdout_file, 0, SEEK_SET);
+  if (r < 0) {
+    perror("fseek");
+    return -1;
+  }
+
+  partial = 0;
+  while ((r = fread(buf, 1, sizeof(buf), p->stdout_file)) != 0)
+    partial = print_lines(buf, r, stream, partial);
+
+  if (ferror(p->stdout_file)) {
+    perror("read");
+    return -1;
+  }
+
+  return 0;
+}
+
+
+/* Copy the last line of the stdio output buffer to `buffer` */
+int process_read_last_line(process_info_t *p,
+                           char* buffer,
+                           size_t buffer_len) {
+  char* ptr;
+
+  int r = fseek(p->stdout_file, 0, SEEK_SET);
+  if (r < 0) {
+    perror("fseek");
+    return -1;
+  }
+
+  buffer[0] = '\0';
+
+  while (fgets(buffer, buffer_len, p->stdout_file) != NULL) {
+    for (ptr = buffer; *ptr && *ptr != '\r' && *ptr != '\n'; ptr++)
+      ;
+    *ptr = '\0';
+  }
+
+  if (ferror(p->stdout_file)) {
+    perror("read");
+    buffer[0] = '\0';
+    return -1;
+  }
+  return 0;
+}
+
+
+/* Return the name that was specified when `p` was started by process_start */
+char* process_get_name(process_info_t *p) {
+  return p->name;
+}
+
+
+/* Terminate process `p`. */
+int process_terminate(process_info_t *p) {
+  return kill(p->pid, SIGTERM);
+}
+
+
+/* Return the exit code of process p. On error, return -1. */
+int process_reap(process_info_t *p) {
+  if (WIFEXITED(p->status)) {
+    return WEXITSTATUS(p->status);
+  } else  {
+    return p->status; /* ? */
+  }
+}
+
+
+/* Clean up after terminating process `p` (e.g. free the output buffer etc.). */
+void process_cleanup(process_info_t *p) {
+  fclose(p->stdout_file);
+  free(p->name);
+}
+
+
+/* Move the console cursor one line up and back to the first column. */
+void rewind_cursor(void) {
+#if defined(__MVS__)
+  fprintf(stderr, "\047[2K\r");
+#else
+  fprintf(stderr, "\033[2K\r");
+#endif
+}