#include "gin/public/v8_platform.h"
#include "gin/run_microtasks_observer.h"
+#ifdef V8_USE_EXTERNAL_STARTUP_DATA
+#include "base/files/memory_mapped_file.h"
+#include "base/path_service.h"
+#endif // V8_USE_EXTERNAL_STARTUP_DATA
+
namespace gin {
namespace {
return true;
}
+#ifdef V8_USE_EXTERNAL_STARTUP_DATA
+base::MemoryMappedFile* g_mapped_natives = NULL;
+base::MemoryMappedFile* g_mapped_snapshot = NULL;
+
+bool MapV8Files(base::FilePath* natives_path, base::FilePath* snapshot_path,
+ int natives_fd = -1, int snapshot_fd = -1) {
+ int flags = base::File::FLAG_OPEN | base::File::FLAG_READ;
+
+ g_mapped_natives = new base::MemoryMappedFile;
+ if (!g_mapped_natives->IsValid()) {
+ if (natives_fd == -1
+ ? !g_mapped_natives->Initialize(base::File(*natives_path, flags))
+ : !g_mapped_natives->Initialize(base::File(natives_fd))) {
+ delete g_mapped_natives;
+ g_mapped_natives = NULL;
+ LOG(FATAL) << "Couldn't mmap v8 natives data file";
+ return false;
+ }
+ }
+
+ g_mapped_snapshot = new base::MemoryMappedFile;
+ if (!g_mapped_snapshot->IsValid()) {
+ if (snapshot_fd == -1
+ ? !g_mapped_snapshot->Initialize(base::File(*snapshot_path, flags))
+ : !g_mapped_snapshot->Initialize(base::File(snapshot_fd))) {
+ delete g_mapped_snapshot;
+ g_mapped_snapshot = NULL;
+ LOG(ERROR) << "Couldn't mmap v8 snapshot data file";
+ return false;
+ }
+ }
+
+ return true;
+}
+#endif // V8_USE_EXTERNAL_STARTUP_DATA
+
} // namespace
+
+#ifdef V8_USE_EXTERNAL_STARTUP_DATA
+// static
+bool IsolateHolder::LoadV8Snapshot() {
+ if (g_mapped_natives && g_mapped_snapshot)
+ return true;
+
+ base::FilePath data_path;
+ PathService::Get(base::DIR_ANDROID_APP_DATA, &data_path);
+ DCHECK(!data_path.empty());
+
+ base::FilePath natives_path = data_path.AppendASCII("natives_blob.bin");
+ base::FilePath snapshot_path = data_path.AppendASCII("snapshot_blob.bin");
+
+ return MapV8Files(&natives_path, &snapshot_path);
+}
+
+//static
+bool IsolateHolder::LoadV8SnapshotFD(int natives_fd, int snapshot_fd) {
+ if (g_mapped_natives && g_mapped_snapshot)
+ return true;
+
+ return MapV8Files(NULL, NULL, natives_fd, snapshot_fd);
+}
+#endif // V8_USE_EXTERNAL_STARTUP_DATA
+
IsolateHolder::IsolateHolder() {
CHECK(g_array_buffer_allocator)
<< "You need to invoke gin::IsolateHolder::Initialize first";
base::SysInfo::NumberOfProcessors());
isolate_ = v8::Isolate::New(params);
isolate_data_.reset(new PerIsolateData(isolate_, g_array_buffer_allocator));
+#if defined(OS_WIN)
+ {
+ void* code_range;
+ size_t size;
+ isolate_->GetCodeRange(&code_range, &size);
+ Debug::CodeRangeCreatedCallback callback =
+ DebugImpl::GetCodeRangeCreatedCallback();
+ if (code_range && size && callback)
+ callback(code_range, size);
+ }
+#endif
}
IsolateHolder::~IsolateHolder() {
if (task_observer_.get())
base::MessageLoop::current()->RemoveTaskObserver(task_observer_.get());
+#if defined(OS_WIN)
+ {
+ void* code_range;
+ size_t size;
+ isolate_->GetCodeRange(&code_range, &size);
+ Debug::CodeRangeDeletedCallback callback =
+ DebugImpl::GetCodeRangeDeletedCallback();
+ if (code_range && callback)
+ callback(code_range);
+ }
+#endif
isolate_data_.reset();
isolate_->Dispose();
}
v8::V8::SetFlagsFromString(v8_flags, sizeof(v8_flags) - 1);
}
v8::V8::SetEntropySource(&GenerateEntropy);
+#ifdef V8_USE_EXTERNAL_STARTUP_DATA
+ v8::StartupData natives;
+ natives.data = reinterpret_cast<const char*>(g_mapped_natives->data());
+ natives.raw_size = g_mapped_natives->length();
+ natives.compressed_size = g_mapped_natives->length();
+ v8::V8::SetNativesDataBlob(&natives);
+
+ v8::StartupData snapshot;
+ snapshot.data = reinterpret_cast<const char*>(g_mapped_snapshot->data());
+ snapshot.raw_size = g_mapped_snapshot->length();
+ snapshot.compressed_size = g_mapped_snapshot->length();
+ v8::V8::SetSnapshotDataBlob(&snapshot);
+#endif // V8_USE_EXTERNAL_STARTUP_DATA
v8::V8::Initialize();
v8_is_initialized = true;
}