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Unified Diff: src/mksnapshot.cc

Issue 334913004: Support external startup data in V8. (retry) (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: rebase + style fix Created 6 years, 6 months ago
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Index: src/mksnapshot.cc
diff --git a/src/mksnapshot.cc b/src/mksnapshot.cc
index b3a5da7d5f68eb2242a030f635f30b701e64830d..de6ffb82afc81b15a5dc10d128872e06e524a726 100644
--- a/src/mksnapshot.cc
+++ b/src/mksnapshot.cc
@@ -48,33 +48,81 @@ class SnapshotWriter {
: fp_(GetFileDescriptorOrDie(snapshot_file))
, raw_file_(NULL)
, raw_context_file_(NULL)
- , compressor_(NULL)
- , omit_(false) {
+ , startup_blob_file_(NULL)
+ , compressor_(NULL) {
}
~SnapshotWriter() {
fclose(fp_);
if (raw_file_) fclose(raw_file_);
if (raw_context_file_) fclose(raw_context_file_);
+ if (startup_blob_file_) fclose(startup_blob_file_);
}
void SetCompressor(Compressor* compressor) {
compressor_ = compressor;
}
- void SetOmit(bool omit) {
- omit_ = omit;
- }
-
void SetRawFiles(const char* raw_file, const char* raw_context_file) {
raw_file_ = GetFileDescriptorOrDie(raw_file);
raw_context_file_ = GetFileDescriptorOrDie(raw_context_file);
}
+ void SetStartupBlobFile(const char* startup_blob_file) {
+ if (startup_blob_file != NULL)
+ startup_blob_file_ = GetFileDescriptorOrDie(startup_blob_file);
+ }
+
void WriteSnapshot(const i::List<char>& snapshot_data,
const i::Serializer& serializer,
const i::List<char>& context_snapshot_data,
const i::Serializer& context_serializer) const {
+ WriteSnapshotFile(snapshot_data, serializer,
+ context_snapshot_data, context_serializer);
+ MaybeWriteStartupBlob(snapshot_data, serializer,
+ context_snapshot_data, context_serializer);
+ }
+
+ private:
+ void MaybeWriteStartupBlob(const i::List<char>& snapshot_data,
+ const i::Serializer& serializer,
+ const i::List<char>& context_snapshot_data,
+ const i::Serializer& context_serializer) const {
+ if (!startup_blob_file_)
+ return;
+
+ i::List<char> startup_blob;
+ ListSnapshotSink sink(&startup_blob);
+
+ int spaces[] = {
+ i::NEW_SPACE, i::OLD_POINTER_SPACE, i::OLD_DATA_SPACE, i::CODE_SPACE,
+ i::MAP_SPACE, i::CELL_SPACE, i::PROPERTY_CELL_SPACE
+ };
+
+ i::byte* snapshot_bytes = reinterpret_cast<i::byte*>(snapshot_data.begin());
+ sink.PutBlob(snapshot_bytes, snapshot_data.length(), "snapshot");
+ for (size_t i = 0; i < ARRAY_SIZE(spaces); ++i)
+ sink.PutInt(serializer.CurrentAllocationAddress(spaces[i]), "spaces");
+
+ i::byte* context_bytes =
+ reinterpret_cast<i::byte*>(context_snapshot_data.begin());
+ sink.PutBlob(context_bytes, context_snapshot_data.length(), "context");
+ for (size_t i = 0; i < ARRAY_SIZE(spaces); ++i)
+ sink.PutInt(context_serializer.CurrentAllocationAddress(spaces[i]),
+ "spaces");
+
+ size_t written = fwrite(startup_blob.begin(), 1, startup_blob.length(),
+ startup_blob_file_);
+ if (written != (size_t)startup_blob.length()) {
+ i::PrintF("Writing snapshot file failed.. Aborting.\n");
+ exit(1);
+ }
+ }
+
+ void WriteSnapshotFile(const i::List<char>& snapshot_data,
+ const i::Serializer& serializer,
+ const i::List<char>& context_snapshot_data,
+ const i::Serializer& context_serializer) const {
WriteFilePrefix();
WriteData("", snapshot_data, raw_file_);
WriteData("context_", context_snapshot_data, raw_context_file_);
@@ -83,7 +131,6 @@ class SnapshotWriter {
WriteFileSuffix();
}
- private:
void WriteFilePrefix() const {
fprintf(fp_, "// Autogenerated snapshot file. Do not edit.\n\n");
fprintf(fp_, "#include \"src/v8.h\"\n");
@@ -137,13 +184,12 @@ class SnapshotWriter {
const i::List<char>& source_data,
const i::List<char>* data_to_be_written) const {
fprintf(fp_, "const byte Snapshot::%sdata_[] = {\n", prefix);
- if (!omit_)
- WriteSnapshotData(data_to_be_written);
+ WriteSnapshotData(data_to_be_written);
fprintf(fp_, "};\n");
fprintf(fp_, "const int Snapshot::%ssize_ = %d;\n", prefix,
data_to_be_written->length());
- if (data_to_be_written == &source_data && !omit_) {
+ if (data_to_be_written == &source_data) {
fprintf(fp_, "const byte* Snapshot::%sraw_data_ = Snapshot::%sdata_;\n",
prefix, prefix);
fprintf(fp_, "const int Snapshot::%sraw_size_ = Snapshot::%ssize_;\n",
@@ -196,8 +242,8 @@ class SnapshotWriter {
FILE* fp_;
FILE* raw_file_;
FILE* raw_context_file_;
+ FILE* startup_blob_file_;
Compressor* compressor_;
- bool omit_;
};
@@ -381,9 +427,10 @@ int main(int argc, char** argv) {
{
SnapshotWriter writer(argv[1]);
- writer.SetOmit(i::FLAG_omit);
if (i::FLAG_raw_file && i::FLAG_raw_context_file)
writer.SetRawFiles(i::FLAG_raw_file, i::FLAG_raw_context_file);
+ if (i::FLAG_startup_blob)
+ writer.SetStartupBlobFile(i::FLAG_startup_blob);
#ifdef COMPRESS_STARTUP_DATA_BZ2
BZip2Compressor bzip2;
writer.SetCompressor(&bzip2);
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