[chromedriver] Reuse forwarded adb ports.

chrome/test/chromedriver/net/port_server.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/test/chromedriver/net/port_server.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/logging.h"
 #include "base/process/process_handle.h"
@@ skipping 116 matching lines @@
 #else
   return Status(kUnknownError, "not implemented for this platform");
 #endif
 }
 
 void PortServer::ReleasePort(int port) {
   base::AutoLock lock(free_lock_);
   free_.push_back(port);
 }
 
-PortManager::PortManager(int min_port, int max_port)
-    : min_port_(min_port), max_port_(max_port) {
+PortManager::PortManager(int min_port, int max_port, bool reuse)
+    : min_port_(min_port), max_port_(max_port), reuse_(reuse) {
   CHECK_GE(max_port_, min_port_);
 }
 
 PortManager::~PortManager() {}
 
 Status PortManager::ReservePort(int* port,
                                 scoped_ptr<PortReservation>* reservation) {
-  base::AutoLock lock(taken_lock_);
+  base::AutoLock lock(lock_);
+  int port_to_use = 0;
+  if (reuse_ && unused_forwarded_port_.size()) {
+    port_to_use = unused_forwarded_port_.front();
+    unused_forwarded_port_.pop_front();
+  } else {
+    int start = base::RandInt(min_port_, max_port_);
+    bool wrapped = false;
+    for (int try_port = start; try_port != start || !wrapped; ++try_port) {
+      if (try_port > max_port_) {
+        wrapped = true;
+        if (min_port_ == max_port_)
+          break;
+        try_port = min_port_;
+      }
+      if (taken_.count(try_port))
+        continue;
 
-  int start = base::RandInt(min_port_, max_port_);
-  bool wrapped = false;
-  for (int try_port = start; try_port != start || !wrapped; ++try_port) {
-    if (try_port > max_port_) {
-      wrapped = true;
-      if (min_port_ == max_port_)
+      char parts[] = {127, 0, 0, 1};
+      net::IPAddressNumber address(parts, parts + arraysize(parts));
+      net::NetLog::Source source;
+      net::TCPServerSocket sock(NULL, source);
+      if (sock.Listen(net::IPEndPoint(address, try_port), 1) == net::OK) {
+        port_to_use = try_port;
         break;
-      try_port = min_port_;
+      }
     }
-    if (taken_.count(try_port))
-      continue;
+  }
+  if (!port_to_use)
+    return Status(kUnknownError, "unable to find open port");
 
-    char parts[] = {127, 0, 0, 1};
-    net::IPAddressNumber address(parts, parts + arraysize(parts));
-    net::NetLog::Source source;
-    net::TCPServerSocket sock(NULL, source);
-    if (sock.Listen(net::IPEndPoint(address, try_port), 1) != net::OK)
-      continue;
-
-    taken_.insert(try_port);
-    *port = try_port;
-    reservation->reset(new PortReservation(
-        base::Bind(&PortManager::ReleasePort, base::Unretained(this), try_port),
-        try_port));
-    return Status(kOk);
-  }
-  return Status(kUnknownError, "unable to find open port");
+  taken_.insert(port_to_use);
+  *port = port_to_use;
+  reservation->reset(new PortReservation(
+      base::Bind(&PortManager::ReleasePort, base::Unretained(this),

[craigdh, 2014/01/08 20:56:33]

then just bind the correct version of ReleasePort here

[frankf, 2014/01/08 21:57:25]

Done.

+        port_to_use),
+      port_to_use));
+  return Status(kOk);
 }
 
 void PortManager::ReleasePort(int port) {
-  base::AutoLock lock(taken_lock_);
+  base::AutoLock lock(lock_);
   taken_.erase(port);
+  if (reuse_)
+    unused_forwarded_port_.push_back(port);
 }