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// 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 "base/atomicops.h"
#include "base/bind.h"
#include "base/command_line.h"
#include "base/strings/string_number_conversions.h"
#include "base/time/time.h"
#include "tools/gn/build_settings.h"
#include "tools/gn/commands.h"
#include "tools/gn/ninja_target_writer.h"
#include "tools/gn/ninja_writer.h"
#include "tools/gn/scheduler.h"
#include "tools/gn/setup.h"
#include "tools/gn/standard_out.h"
namespace commands {
namespace {
// Suppress output on success.
const char kSwitchQuiet[] = "q";
void TargetResolvedCallback(base::subtle::Atomic32* write_counter,
const Target* target) {
base::subtle::NoBarrier_AtomicIncrement(write_counter, 1);
NinjaTargetWriter::RunAndWriteFile(target);
}
} // namespace
const char kGen[] = "gen";
const char kGen_HelpShort[] =
"gen: Generate ninja files.";
const char kGen_Help[] =
"gn gen\n"
" Generates ninja files from the current tree.\n"
"\n"
" See \"gn help\" for the common command-line switches.\n";
// Note: partially duplicated in command_gyp.cc.
int RunGen(const std::vector<std::string>& args) {
base::TimeTicks begin_time = base::TimeTicks::Now();
// Deliberately leaked to avoid expensive process teardown.
Setup* setup = new Setup;
if (!setup->DoSetup())
return 1;
// Cause the load to also generate the ninja files for each target. We wrap
// the writing to maintain a counter.
base::subtle::Atomic32 write_counter = 0;
setup->build_settings().set_target_resolved_callback(
base::Bind(&TargetResolvedCallback, &write_counter));
// Do the actual load. This will also write out the target ninja files.
if (!setup->Run())
return 1;
// Write the root ninja files.
if (!NinjaWriter::RunAndWriteFiles(&setup->build_settings()))
return 1;
base::TimeTicks end_time = base::TimeTicks::Now();
if (!CommandLine::ForCurrentProcess()->HasSwitch(kSwitchQuiet)) {
OutputString("Done. ", DECORATION_GREEN);
std::string stats = "Wrote " +
base::IntToString(static_cast<int>(write_counter)) +
" targets from " +
base::IntToString(
setup->scheduler().input_file_manager()->GetInputFileCount()) +
" files in " +
base::IntToString((end_time - begin_time).InMilliseconds()) + "ms\n";
OutputString(stats);
}
return 0;
}
} // namespace commands
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