Upgrade CEF to 3.3029.1611.g44e39a8 / Chromium 58.0.3029.81.

[casparcg] / dependencies64 / cef / windows / tests / shared / browser / main_message_loop_external_pump.cc

diff --git a/dependencies64/cef/windows/tests/shared/browser/main_message_loop_external_pump.cc b/dependencies64/cef/windows/tests/shared/browser/main_message_loop_external_pump.cc
new file mode 100644 (file)
index 0000000..d64f6dc
--- /dev/null
+++ b/dependencies64/cef/windows/tests/shared/browser/main_message_loop_external_pump.cc
@@ -0,0 +1,108 @@
+// Copyright (c) 2016 The Chromium Embedded Framework 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 "tests/shared/browser/main_message_loop_external_pump.h"
+
+#include <climits>
+
+#include "include/cef_app.h"
+#include "include/wrapper/cef_helpers.h"
+#include "tests/shared/browser/main_message_loop.h"
+
+namespace client {
+
+namespace {
+
+// Special timer delay placeholder value. Intentionally 32-bit for Windows and
+// OS X platform API compatibility.
+const int32 kTimerDelayPlaceholder = INT_MAX;
+
+// The maximum number of milliseconds we're willing to wait between calls to
+// DoWork().
+const int64 kMaxTimerDelay = 1000 / 30;  // 30fps
+
+client::MainMessageLoopExternalPump* g_external_message_pump = NULL;
+
+} // namespace
+
+MainMessageLoopExternalPump::MainMessageLoopExternalPump()
+  : is_active_(false),
+    reentrancy_detected_(false) {
+  DCHECK(!g_external_message_pump);
+  g_external_message_pump = this;
+}
+
+MainMessageLoopExternalPump::~MainMessageLoopExternalPump() {
+  g_external_message_pump = NULL;
+}
+
+MainMessageLoopExternalPump* MainMessageLoopExternalPump::Get() {
+  return g_external_message_pump;
+}
+
+void MainMessageLoopExternalPump::OnScheduleWork(int64 delay_ms) {
+  REQUIRE_MAIN_THREAD();
+
+  if (delay_ms == kTimerDelayPlaceholder && IsTimerPending()) {
+    // Don't set the maximum timer requested from DoWork() if a timer event is
+    // currently pending.
+    return;
+  }
+
+  KillTimer();
+
+  if (delay_ms <= 0) {
+    // Execute the work immediately.
+    DoWork();
+  } else {
+    // Never wait longer than the maximum allowed time.
+    if (delay_ms > kMaxTimerDelay)
+      delay_ms = kMaxTimerDelay;
+
+    // Results in call to OnTimerTimeout() after the specified delay.
+    SetTimer(delay_ms);
+  }
+}
+
+void MainMessageLoopExternalPump::OnTimerTimeout() {
+  REQUIRE_MAIN_THREAD();
+
+  KillTimer();
+  DoWork();
+}
+
+void MainMessageLoopExternalPump::DoWork() {
+  const bool was_reentrant = PerformMessageLoopWork();
+  if (was_reentrant) {
+    // Execute the remaining work as soon as possible.
+    OnScheduleMessagePumpWork(0);
+  } else if (!IsTimerPending()) {
+    // Schedule a timer event at the maximum allowed time. This may be dropped
+    // in OnScheduleWork() if another timer event is already in-flight.
+    OnScheduleMessagePumpWork(kTimerDelayPlaceholder);
+  }
+}
+
+bool MainMessageLoopExternalPump::PerformMessageLoopWork() {
+  if (is_active_) {
+    // When CefDoMessageLoopWork() is called there may be various callbacks
+    // (such as paint and IPC messages) that result in additional calls to this
+    // method. If re-entrancy is detected we must repost a request again to the
+    // owner thread to ensure that the discarded call is executed in the future.
+    reentrancy_detected_ = true;
+    return false;
+  }
+
+  reentrancy_detected_ = false;
+
+  is_active_ = true;
+  CefDoMessageLoopWork();
+  is_active_ = false;
+
+  // |reentrancy_detected_| may have changed due to re-entrant calls to this
+  // method.
+  return reentrancy_detected_;
+}
+
+}  // namespace client