🚙 GN: Add write_runtime_deps variable

tools/gn/scheduler.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 "tools/gn/scheduler.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/strings/string_number_conversions.h"
 #include "build/build_config.h"
 #include "tools/gn/standard_out.h"
 #include "tools/gn/switches.h"
+#include "tools/gn/target.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #else
 #include <unistd.h>
 #endif
 
 Scheduler* g_scheduler = nullptr;
 
 namespace {
@@ skipping 121 matching lines @@
   base::AutoLock lock(lock_);
   written_files_.push_back(file);
 }
 
 void Scheduler::AddUnknownGeneratedInput(const Target* target,
                                          const SourceFile& file) {
   base::AutoLock lock(lock_);
   unknown_generated_inputs_.insert(std::make_pair(file, target));
 }
 
+void Scheduler::AddWriteRuntimeDepsTarget(const Target* target) {
+  base::AutoLock lock(lock_);
+  write_runtime_deps_targets_.push_back(target);
+}
+
+std::vector<const Target*> Scheduler::GetWriteRuntimeDepsTargets() const {
+  base::AutoLock lock(lock_);
+  return write_runtime_deps_targets_;
+}
+
+bool Scheduler::IsFileGeneratedByWriteRuntimeDeps(
+    const OutputFile& file) const {
+  base::AutoLock lock(lock_);
+  // Number of targets should be quite small, so brute-force search is fine.
+  for (const Target* target : write_runtime_deps_targets_) {
+    if (file == target->write_runtime_deps_output()) {
+      return true;
+    }
+  }
+  return false;
+}
+
 std::multimap<SourceFile, const Target*>
     Scheduler::GetUnknownGeneratedInputs() const {
   base::AutoLock lock(lock_);
 
   // Remove all unknown inputs that were written files. These are OK as inputs
   // to build steps since they were written as a side-effect of running GN.
   //
   // It's assumed that this function is called once during cleanup to check for
   // errors, so performing this work in the lock doesn't matter.
   std::multimap<SourceFile, const Target*> filtered = unknown_generated_inputs_;
@@ skipping 39 matching lines @@
 void Scheduler::DoWork(const base::Closure& closure) {
   closure.Run();
   DecrementWorkCount();
 }
 
 void Scheduler::OnComplete() {
   // Should be called on the main thread.
   DCHECK(base::MessageLoop::current() == main_loop());
   runner_.Quit();
 }