--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/third_party/libuv/test/benchmark-pump.c	Wed Jan 14 19:39:52 2026 -0800
@@ -0,0 +1,478 @@
+/* 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 "task.h"
+#include "uv.h"
+
+#include <math.h>
+#include <stdio.h>
+
+
+static int TARGET_CONNECTIONS;
+#define WRITE_BUFFER_SIZE           8192
+#define MAX_SIMULTANEOUS_CONNECTS   100
+
+#define PRINT_STATS                 0
+#define STATS_INTERVAL              1000 /* msec */
+#define STATS_COUNT                 5
+
+
+static void do_write(uv_stream_t*);
+static void maybe_connect_some(void);
+
+static uv_req_t* req_alloc(void);
+static void req_free(uv_req_t* uv_req);
+
+static void buf_alloc(uv_handle_t* handle, size_t size, uv_buf_t* buf);
+static void buf_free(const uv_buf_t* buf);
+
+static uv_loop_t* loop;
+
+static uv_tcp_t tcpServer;
+static uv_pipe_t pipeServer;
+static uv_stream_t* server;
+static struct sockaddr_in listen_addr;
+static struct sockaddr_in connect_addr;
+
+static int64_t start_time;
+
+static int max_connect_socket = 0;
+static int max_read_sockets = 0;
+static int read_sockets = 0;
+static int write_sockets = 0;
+
+static int64_t nrecv = 0;
+static int64_t nrecv_total = 0;
+static int64_t nsent = 0;
+static int64_t nsent_total = 0;
+
+static int stats_left = 0;
+
+static char write_buffer[WRITE_BUFFER_SIZE];
+
+/* Make this as large as you need. */
+#define MAX_WRITE_HANDLES 1000
+
+static stream_type type;
+
+static uv_tcp_t tcp_write_handles[MAX_WRITE_HANDLES];
+static uv_pipe_t pipe_write_handles[MAX_WRITE_HANDLES];
+
+static uv_timer_t timer_handle;
+
+
+static double gbit(int64_t bytes, int64_t passed_ms) {
+  double gbits = ((double)bytes / (1024 * 1024 * 1024)) * 8;
+  return gbits / ((double)passed_ms / 1000);
+}
+
+
+static void show_stats(uv_timer_t* handle) {
+  int64_t diff;
+  int i;
+
+#if PRINT_STATS
+  fprintf(stderr, "connections: %d, write: %.1f gbit/s\n",
+          write_sockets,
+          gbit(nsent, STATS_INTERVAL));
+  fflush(stderr);
+#endif
+
+  /* Exit if the show is over */
+  if (!--stats_left) {
+
+    uv_update_time(loop);
+    diff = uv_now(loop) - start_time;
+
+    fprintf(stderr, "%s_pump%d_client: %.1f gbit/s\n",
+            type == TCP ? "tcp" : "pipe",
+            write_sockets,
+            gbit(nsent_total, diff));
+    fflush(stderr);
+
+    for (i = 0; i < write_sockets; i++) {
+      if (type == TCP)
+        uv_close((uv_handle_t*) &tcp_write_handles[i], NULL);
+      else
+        uv_close((uv_handle_t*) &pipe_write_handles[i], NULL);
+    }
+
+    exit(0);
+  }
+
+  /* Reset read and write counters */
+  nrecv = 0;
+  nsent = 0;
+}
+
+
+static void read_show_stats(void) {
+  int64_t diff;
+
+  uv_update_time(loop);
+  diff = uv_now(loop) - start_time;
+
+  fprintf(stderr, "%s_pump%d_server: %.1f gbit/s\n",
+          type == TCP ? "tcp" : "pipe",
+          max_read_sockets,
+          gbit(nrecv_total, diff));
+  fflush(stderr);
+}
+
+
+
+static void read_sockets_close_cb(uv_handle_t* handle) {
+  free(handle);
+  read_sockets--;
+
+  /* If it's past the first second and everyone has closed their connection
+   * Then print stats.
+   */
+  if (uv_now(loop) - start_time > 1000 && read_sockets == 0) {
+    read_show_stats();
+    uv_close((uv_handle_t*)server, NULL);
+  }
+}
+
+
+static void start_stats_collection(void) {
+  int r;
+
+  /* Show-stats timer */
+  stats_left = STATS_COUNT;
+  r = uv_timer_init(loop, &timer_handle);
+  ASSERT_OK(r);
+  r = uv_timer_start(&timer_handle, show_stats, STATS_INTERVAL, STATS_INTERVAL);
+  ASSERT_OK(r);
+
+  uv_update_time(loop);
+  start_time = uv_now(loop);
+}
+
+
+static void read_cb(uv_stream_t* stream, ssize_t bytes, const uv_buf_t* buf) {
+  if (nrecv_total == 0) {
+    ASSERT_OK(start_time);
+    uv_update_time(loop);
+    start_time = uv_now(loop);
+  }
+
+  if (bytes < 0) {
+    uv_close((uv_handle_t*)stream, read_sockets_close_cb);
+    return;
+  }
+
+  buf_free(buf);
+
+  nrecv += bytes;
+  nrecv_total += bytes;
+}
+
+
+static void write_cb(uv_write_t* req, int status) {
+  ASSERT_OK(status);
+
+  req_free((uv_req_t*) req);
+
+  nsent += sizeof write_buffer;
+  nsent_total += sizeof write_buffer;
+
+  do_write((uv_stream_t*) req->handle);
+}
+
+
+static void do_write(uv_stream_t* stream) {
+  uv_write_t* req;
+  uv_buf_t buf;
+  int r;
+
+  buf.base = (char*) &write_buffer;
+  buf.len = sizeof write_buffer;
+
+  req = (uv_write_t*) req_alloc();
+  r = uv_write(req, stream, &buf, 1, write_cb);
+  ASSERT_OK(r);
+}
+
+
+static void connect_cb(uv_connect_t* req, int status) {
+  int i;
+
+  if (status) {
+    fprintf(stderr, "%s", uv_strerror(status));
+    fflush(stderr);
+  }
+  ASSERT_OK(status);
+
+  write_sockets++;
+  req_free((uv_req_t*) req);
+
+  maybe_connect_some();
+
+  if (write_sockets == TARGET_CONNECTIONS) {
+    start_stats_collection();
+
+    /* Yay! start writing */
+    for (i = 0; i < write_sockets; i++) {
+      if (type == TCP)
+        do_write((uv_stream_t*) &tcp_write_handles[i]);
+      else
+        do_write((uv_stream_t*) &pipe_write_handles[i]);
+    }
+  }
+}
+
+
+static void maybe_connect_some(void) {
+  uv_connect_t* req;
+  uv_tcp_t* tcp;
+  uv_pipe_t* pipe;
+  int r;
+
+  while (max_connect_socket < TARGET_CONNECTIONS &&
+         max_connect_socket < write_sockets + MAX_SIMULTANEOUS_CONNECTS) {
+    if (type == TCP) {
+      tcp = &tcp_write_handles[max_connect_socket++];
+
+      r = uv_tcp_init(loop, tcp);
+      ASSERT_OK(r);
+
+      req = (uv_connect_t*) req_alloc();
+      r = uv_tcp_connect(req,
+                         tcp,
+                         (const struct sockaddr*) &connect_addr,
+                         connect_cb);
+      ASSERT_OK(r);
+    } else {
+      pipe = &pipe_write_handles[max_connect_socket++];
+
+      r = uv_pipe_init(loop, pipe, 0);
+      ASSERT_OK(r);
+
+      req = (uv_connect_t*) req_alloc();
+      uv_pipe_connect(req, pipe, TEST_PIPENAME, connect_cb);
+    }
+  }
+}
+
+
+static void connection_cb(uv_stream_t* s, int status) {
+  uv_stream_t* stream;
+  int r;
+
+  ASSERT_PTR_EQ(server, s);
+  ASSERT_OK(status);
+
+  if (type == TCP) {
+    stream = (uv_stream_t*)malloc(sizeof(uv_tcp_t));
+    r = uv_tcp_init(loop, (uv_tcp_t*)stream);
+    ASSERT_OK(r);
+  } else {
+    stream = (uv_stream_t*)malloc(sizeof(uv_pipe_t));
+    r = uv_pipe_init(loop, (uv_pipe_t*)stream, 0);
+    ASSERT_OK(r);
+  }
+
+  r = uv_accept(s, stream);
+  ASSERT_OK(r);
+
+  r = uv_read_start(stream, buf_alloc, read_cb);
+  ASSERT_OK(r);
+
+  read_sockets++;
+  max_read_sockets++;
+}
+
+
+/*
+ * Request allocator
+ */
+
+typedef struct req_list_s {
+  union uv_any_req uv_req;
+  struct req_list_s* next;
+} req_list_t;
+
+
+static req_list_t* req_freelist = NULL;
+
+
+static uv_req_t* req_alloc(void) {
+  req_list_t* req;
+
+  req = req_freelist;
+  if (req != NULL) {
+    req_freelist = req->next;
+    return (uv_req_t*) req;
+  }
+
+  req = (req_list_t*) malloc(sizeof *req);
+  return (uv_req_t*) req;
+}
+
+
+static void req_free(uv_req_t* uv_req) {
+  req_list_t* req = (req_list_t*) uv_req;
+
+  req->next = req_freelist;
+  req_freelist = req;
+}
+
+
+/*
+ * Buffer allocator
+ */
+
+typedef struct buf_list_s {
+  uv_buf_t uv_buf_t;
+  struct buf_list_s* next;
+} buf_list_t;
+
+
+static buf_list_t* buf_freelist = NULL;
+
+
+static void buf_alloc(uv_handle_t* handle, size_t size, uv_buf_t* buf) {
+  buf_list_t* ab;
+
+  ab = buf_freelist;
+  if (ab != NULL)
+    buf_freelist = ab->next;
+  else {
+    ab = malloc(size + sizeof(*ab));
+    ab->uv_buf_t.len = size;
+    ab->uv_buf_t.base = (char*) (ab + 1);
+  }
+
+  *buf = ab->uv_buf_t;
+}
+
+
+static void buf_free(const uv_buf_t* buf) {
+  buf_list_t* ab = (buf_list_t*) buf->base - 1;
+  ab->next = buf_freelist;
+  buf_freelist = ab;
+}
+
+
+HELPER_IMPL(tcp_pump_server) {
+  int r;
+
+  type = TCP;
+  loop = uv_default_loop();
+
+  ASSERT_OK(uv_ip4_addr("0.0.0.0", TEST_PORT, &listen_addr));
+
+  /* Server */
+  server = (uv_stream_t*)&tcpServer;
+  r = uv_tcp_init(loop, &tcpServer);
+  ASSERT_OK(r);
+  r = uv_tcp_bind(&tcpServer, (const struct sockaddr*) &listen_addr, 0);
+  ASSERT_OK(r);
+  r = uv_listen((uv_stream_t*)&tcpServer, MAX_WRITE_HANDLES, connection_cb);
+  ASSERT_OK(r);
+
+  notify_parent_process();
+  uv_run(loop, UV_RUN_DEFAULT);
+
+  return 0;
+}
+
+
+HELPER_IMPL(pipe_pump_server) {
+  int r;
+  type = PIPE;
+
+  loop = uv_default_loop();
+
+  /* Server */
+  server = (uv_stream_t*)&pipeServer;
+  r = uv_pipe_init(loop, &pipeServer, 0);
+  ASSERT_OK(r);
+  r = uv_pipe_bind(&pipeServer, TEST_PIPENAME);
+  ASSERT_OK(r);
+  r = uv_listen((uv_stream_t*)&pipeServer, MAX_WRITE_HANDLES, connection_cb);
+  ASSERT_OK(r);
+
+  notify_parent_process();
+  uv_run(loop, UV_RUN_DEFAULT);
+
+  MAKE_VALGRIND_HAPPY(loop);
+  return 0;
+}
+
+
+static void tcp_pump(int n) {
+  ASSERT_LE(n, MAX_WRITE_HANDLES);
+  TARGET_CONNECTIONS = n;
+  type = TCP;
+
+  loop = uv_default_loop();
+
+  ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &connect_addr));
+
+  /* Start making connections */
+  maybe_connect_some();
+
+  uv_run(loop, UV_RUN_DEFAULT);
+
+  MAKE_VALGRIND_HAPPY(loop);
+}
+
+
+static void pipe_pump(int n) {
+  ASSERT_LE(n, MAX_WRITE_HANDLES);
+  TARGET_CONNECTIONS = n;
+  type = PIPE;
+
+  loop = uv_default_loop();
+
+  /* Start making connections */
+  maybe_connect_some();
+
+  uv_run(loop, UV_RUN_DEFAULT);
+
+  MAKE_VALGRIND_HAPPY(loop);
+}
+
+
+BENCHMARK_IMPL(tcp_pump100_client) {
+  tcp_pump(100);
+  return 0;
+}
+
+
+BENCHMARK_IMPL(tcp_pump1_client) {
+  tcp_pump(1);
+  return 0;
+}
+
+
+BENCHMARK_IMPL(pipe_pump100_client) {
+  pipe_pump(100);
+  return 0;
+}
+
+
+BENCHMARK_IMPL(pipe_pump1_client) {
+  pipe_pump(1);
+  return 0;
+}