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Reapply "Use a single file for app snapshots."

Browse source 
- Don't read script to check for an app snapshot if it is a pipe. Fixes loading source from a pipe.
 - Fix windows and fushsia builds.

R=asiva@google.com

Review URL: https://codereview.chromium.org/2416973003 .
This commit is contained in:
Ryan Macnak 2016-10-14 09:57:54 -07:00
parent 3155b1e08c
commit 3d00ecdc8f
21 changed files with 372 additions and 298 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

11
runtime/bin/dartutils.cc
View file

@ -192,17 +192,6 @@ const char* DartUtils::RemoveScheme(const char* url) {
}
void* DartUtils::MapExecutable(const char* name, intptr_t* len) {
File* file = File::Open(name, File::kRead);
if (file == NULL) {
return NULL;
}
void* addr = file->MapExecutable(len);
file->Release();
return addr;
}
void* DartUtils::OpenFile(const char* name, bool write) {
File* file = File::Open(name, write ? File::kWriteTruncate : File::kRead);
return reinterpret_cast<void*>(file);

3
runtime/bin/extensions_android.cc
View file

@ -11,7 +11,8 @@
namespace dart {
namespace bin {
const char* kPrecompiledLibraryName = "libprecompiled.so";
const char* kPrecompiledVMIsolateSymbolName = "_kVmIsolateSnapshot";
const char* kPrecompiledIsolateSymbolName = "_kIsolateSnapshot";
const char* kPrecompiledInstructionsSymbolName = "_kInstructionsSnapshot";
const char* kPrecompiledDataSymbolName = "_kDataSnapshot";

3
runtime/bin/extensions_fuchsia.cc
View file

@ -11,7 +11,8 @@
namespace dart {
namespace bin {
const char* kPrecompiledLibraryName = "libprecompiled.so";
const char* kPrecompiledVMIsolateSymbolName = "_kVmIsolateSnapshot";
const char* kPrecompiledIsolateSymbolName = "_kIsolateSnapshot";
const char* kPrecompiledInstructionsSymbolName = "_kInstructionsSnapshot";
const char* kPrecompiledDataSymbolName = "_kDataSnapshot";

3
runtime/bin/extensions_linux.cc
View file

@ -11,7 +11,8 @@
namespace dart {
namespace bin {
const char* kPrecompiledLibraryName = "libprecompiled.so";
const char* kPrecompiledVMIsolateSymbolName = "_kVmIsolateSnapshot";
const char* kPrecompiledIsolateSymbolName = "_kIsolateSnapshot";
const char* kPrecompiledInstructionsSymbolName = "_kInstructionsSnapshot";
const char* kPrecompiledDataSymbolName = "_kDataSnapshot";

3
runtime/bin/extensions_macos.cc
View file

@ -11,7 +11,8 @@
namespace dart {
namespace bin {
const char* kPrecompiledLibraryName = "libprecompiled.dylib";
const char* kPrecompiledVMIsolateSymbolName = "kVmIsolateSnapshot";
const char* kPrecompiledIsolateSymbolName = "kIsolateSnapshot";
const char* kPrecompiledInstructionsSymbolName = "kInstructionsSnapshot";
const char* kPrecompiledDataSymbolName = "kDataSnapshot";

3
runtime/bin/extensions_win.cc
View file

@ -12,7 +12,8 @@
namespace dart {
namespace bin {
const char* kPrecompiledLibraryName = "precompiled.dll";
const char* kPrecompiledVMIsolateSymbolName = "_kVmIsolateSnapshot";
const char* kPrecompiledIsolateSymbolName = "_kIsolateSnapshot";
const char* kPrecompiledInstructionsSymbolName = "_kInstructionsSnapshot";
const char* kPrecompiledDataSymbolName = "_kDataSnapshot";

6
runtime/bin/file.h
View file

@ -88,7 +88,11 @@ class File : public ReferenceCounted<File> {
intptr_t GetFD();
void* MapExecutable(intptr_t* num_bytes);
enum MapType {
kReadOnly = 0,
kReadExecute = 1,
};
void* Map(MapType type, int64_t position, int64_t length);
// Read/Write attempt to transfer num_bytes to/from buffer. It returns
// the number of bytes read/written.

24
runtime/bin/file_android.cc
View file

@ -78,17 +78,23 @@ bool File::IsClosed() {
}
void* File::MapExecutable(intptr_t* len) {
void* File::Map(MapType type, int64_t position, int64_t length) {
ASSERT(handle_->fd() >= 0);
intptr_t length = Length();
void* addr = mmap(0, length,
PROT_READ | PROT_EXEC, MAP_PRIVATE,
handle_->fd(), 0);
int prot = PROT_NONE;
switch (type) {
case kReadOnly:
prot = PROT_READ;
break;
case kReadExecute:
prot = PROT_READ | PROT_EXEC;
break;
default:
return NULL;
}
void* addr = mmap(NULL, length, prot, MAP_PRIVATE,
handle_->fd(), position);
if (addr == MAP_FAILED) {
*len = -1;
} else {
*len = length;
return NULL;
}
return addr;
}

2
runtime/bin/file_fuchsia.cc
View file

@ -75,7 +75,7 @@ bool File::IsClosed() {
}
void* File::MapExecutable(intptr_t* len) {
void* File::Map(MapType type, int64_t position, int64_t length) {
UNIMPLEMENTED();
return NULL;
}

23
runtime/bin/file_linux.cc
View file

@ -77,16 +77,23 @@ bool File::IsClosed() {
}
void* File::MapExecutable(intptr_t* len) {
void* File::Map(MapType type, int64_t position, int64_t length) {
ASSERT(handle_->fd() >= 0);
intptr_t length = Length();
void* addr = mmap(0, length,
PROT_READ | PROT_EXEC, MAP_PRIVATE,
handle_->fd(), 0);
int prot = PROT_NONE;
switch (type) {
case kReadOnly:
prot = PROT_READ;
break;
case kReadExecute:
prot = PROT_READ | PROT_EXEC;
break;
default:
return NULL;
}
void* addr = mmap(NULL, length, prot, MAP_PRIVATE,
handle_->fd(), position);
if (addr == MAP_FAILED) {
*len = -1;
} else {
*len = length;
return NULL;
}
return addr;
}

23
runtime/bin/file_macos.cc
View file

@ -80,16 +80,23 @@ bool File::IsClosed() {
}
void* File::MapExecutable(intptr_t* len) {
void* File::Map(MapType type, int64_t position, int64_t length) {
ASSERT(handle_->fd() >= 0);
intptr_t length = Length();
void* addr = mmap(0, length,
PROT_READ | PROT_EXEC, MAP_PRIVATE,
handle_->fd(), 0);
int prot = PROT_NONE;
switch (type) {
case kReadOnly:
prot = PROT_READ;
break;
case kReadExecute:
prot = PROT_READ | PROT_EXEC;
break;
default:
return NULL;
}
void* addr = mmap(NULL, length, prot, MAP_PRIVATE,
handle_->fd(), position);
if (addr == MAP_FAILED) {
*len = -1;
} else {
*len = length;
return NULL;
}
return addr;
}

2
runtime/bin/file_win.cc
View file

@ -74,7 +74,7 @@ bool File::IsClosed() {
}
void* File::MapExecutable(intptr_t* len) {
void* File::Map(MapType type, int64_t position, int64_t length) {
UNIMPLEMENTED();
return NULL;
}

38
runtime/bin/gen_snapshot.cc
View file

@ -1036,16 +1036,6 @@ static void CreateAndWritePrecompiledSnapshot(
Dart_QualifiedFunctionName* standalone_entry_points) {
ASSERT(IsSnapshottingForPrecompilation());
Dart_Handle result;
uint8_t* vm_isolate_buffer = NULL;
intptr_t vm_isolate_size = 0;
uint8_t* isolate_buffer = NULL;
intptr_t isolate_size = 0;
uint8_t* assembly_buffer = NULL;
intptr_t assembly_size = 0;
uint8_t* instructions_blob_buffer = NULL;
intptr_t instructions_blob_size = 0;
uint8_t* rodata_blob_buffer = NULL;
intptr_t rodata_blob_size = 0;
// Precompile with specified embedder entry points
result = Dart_Precompile(standalone_entry_points, true);
@ -1054,14 +1044,23 @@ static void CreateAndWritePrecompiledSnapshot(
// Create a precompiled snapshot.
bool as_assembly = assembly_filename != NULL;
if (as_assembly) {
result = Dart_CreatePrecompiledSnapshotAssembly(&vm_isolate_buffer,
&vm_isolate_size,
&isolate_buffer,
&isolate_size,
&assembly_buffer,
uint8_t* assembly_buffer = NULL;
intptr_t assembly_size = 0;
result = Dart_CreatePrecompiledSnapshotAssembly(&assembly_buffer,
&assembly_size);
CHECK_RESULT(result);
WriteSnapshotFile(assembly_filename,
assembly_buffer,
assembly_size);
} else {
uint8_t* vm_isolate_buffer = NULL;
intptr_t vm_isolate_size = 0;
uint8_t* isolate_buffer = NULL;
intptr_t isolate_size = 0;
uint8_t* instructions_blob_buffer = NULL;
intptr_t instructions_blob_size = 0;
uint8_t* rodata_blob_buffer = NULL;
intptr_t rodata_blob_size = 0;
result = Dart_CreatePrecompiledSnapshotBlob(&vm_isolate_buffer,
&vm_isolate_size,
&isolate_buffer,
@ -1071,20 +1070,12 @@ static void CreateAndWritePrecompiledSnapshot(
&rodata_blob_buffer,
&rodata_blob_size);
CHECK_RESULT(result);
}
// Now write the snapshot pieces out to the specified files and exit.
WriteSnapshotFile(vm_isolate_snapshot_filename,
vm_isolate_buffer,
vm_isolate_size);
WriteSnapshotFile(isolate_snapshot_filename,
isolate_buffer,
isolate_size);
if (as_assembly) {
WriteSnapshotFile(assembly_filename,
assembly_buffer,
assembly_size);
} else {
WriteSnapshotFile(instructions_blob_filename,
instructions_blob_buffer,
instructions_blob_size);
@ -1092,6 +1083,7 @@ static void CreateAndWritePrecompiledSnapshot(
rodata_blob_buffer,
rodata_blob_size);
}
Dart_ExitScope();
// Shutdown the isolate.

359
runtime/bin/main.cc
View file

@ -97,16 +97,11 @@ static const bool is_noopt = false;
#endif
extern const char* kPrecompiledLibraryName;
extern const char* kPrecompiledVMIsolateSymbolName;
extern const char* kPrecompiledIsolateSymbolName;
extern const char* kPrecompiledInstructionsSymbolName;
extern const char* kPrecompiledDataSymbolName;
static const char* kVMIsolateSuffix = "snapshot.vmisolate";
static const char* kIsolateSuffix = "snapshot.isolate";
static const char* kAssemblySuffix = "snapshot.S";
static const char* kInstructionsSuffix = "snapshot.instructions";
static const char* kRODataSuffix = "snapshot.rodata";
// Global flag that is used to indicate that we want to trace resolution of
// URIs and the loading of libraries, parts and scripts.
@ -378,15 +373,6 @@ static bool ProcessSnapshotKindOption(const char* kind,
}
static bool ProcessRunAppSnapshotOption(
const char* filename, CommandLineOptions* vm_options) {
ASSERT(filename != NULL);
snapshot_filename = filename;
run_app_snapshot = true;
return true;
}
static bool ProcessEnableVmServiceOption(const char* option_value,
CommandLineOptions* vm_options) {
ASSERT(option_value != NULL);
@ -565,7 +551,6 @@ static struct {
{ "--observe", ProcessObserveOption },
{ "--snapshot=", ProcessSnapshotFilenameOption },
{ "--snapshot-kind=", ProcessSnapshotKindOption },
{ "--run-app-snapshot=", ProcessRunAppSnapshotOption },
{ "--use-blobs", ProcessUseBlobsOption },
{ "--trace-loading", ProcessTraceLoadingOption },
{ "--hot-reload-test-mode", ProcessHotReloadTestModeOption },
@ -1207,93 +1192,199 @@ static void WriteSnapshotFile(const char* snapshot_directory,
}
static void ReadSnapshotFile(const char* snapshot_directory,
const char* filename,
const uint8_t** buffer) {
char* concat = NULL;
const char* qualified_filename;
if ((snapshot_directory != NULL) && (strlen(snapshot_directory) > 0)) {
intptr_t len = snprintf(NULL, 0, "%s/%s", snapshot_directory, filename);
concat = new char[len + 1];
snprintf(concat, len + 1, "%s/%s", snapshot_directory, filename);
qualified_filename = concat;
} else {
qualified_filename = filename;
}
static const int64_t kAppSnapshotHeaderSize = 5 * sizeof(int64_t); // NOLINT
static const int64_t kAppSnapshotMagicNumber = 0xf6f6dcdc;
static const int64_t kAppSnapshotPageSize = 4 * KB;
void* file = DartUtils::OpenFile(qualified_filename, false);
static bool ReadAppSnapshotBlobs(const char* script_name,
const uint8_t** vmisolate_buffer,
const uint8_t** isolate_buffer,
const uint8_t** instructions_buffer,
const uint8_t** rodata_buffer) {
File* file = File::Open(script_name, File::kRead);
if (file == NULL) {
fprintf(stderr,
"Error: Unable to open file %s for reading snapshot\n",
qualified_filename);
fflush(stderr);
Platform::Exit(kErrorExitCode);
return false;
}
intptr_t len = -1;
DartUtils::ReadFile(buffer, &len, file);
if ((*buffer == NULL) || (len == -1)) {
fprintf(stderr,
"Error: Unable to read snapshot file %s\n", qualified_filename);
fflush(stderr);
Platform::Exit(kErrorExitCode);
if (file->Length() < kAppSnapshotHeaderSize) {
file->Release();
return false;
}
DartUtils::CloseFile(file);
if (concat != NULL) {
delete[] concat;
int64_t header[5];
ASSERT(sizeof(header) == kAppSnapshotHeaderSize);
if (!file->ReadFully(&header, kAppSnapshotHeaderSize)) {
file->Release();
return false;
}
if (header[0] != kAppSnapshotMagicNumber) {
file->Release();
return false;
}
int64_t vmisolate_position =
Utils::RoundUp(file->Position(), kAppSnapshotPageSize);
int64_t isolate_position =
Utils::RoundUp(vmisolate_position + header[1], kAppSnapshotPageSize);
int64_t rodata_position =
Utils::RoundUp(isolate_position + header[2], kAppSnapshotPageSize);
int64_t instructions_position =
Utils::RoundUp(rodata_position + header[3], kAppSnapshotPageSize);
static void ReadExecutableSnapshotFile(const char* snapshot_directory,
const char* filename,
const uint8_t** buffer) {
char* concat = NULL;
const char* qualified_filename;
if ((snapshot_directory != NULL) && (strlen(snapshot_directory) > 0)) {
intptr_t len = snprintf(NULL, 0, "%s/%s", snapshot_directory, filename);
concat = new char[len + 1];
snprintf(concat, len + 1, "%s/%s", snapshot_directory, filename);
qualified_filename = concat;
void* read_only_buffer =
file->Map(File::kReadOnly, vmisolate_position,
instructions_position - vmisolate_position);
if (read_only_buffer == NULL) {
ErrorExit(kErrorExitCode, "Failed to memory map snapshot\n");
}
*vmisolate_buffer = reinterpret_cast<const uint8_t*>(read_only_buffer)
+ (vmisolate_position - vmisolate_position);
*isolate_buffer = reinterpret_cast<const uint8_t*>(read_only_buffer)
+ (isolate_position - vmisolate_position);
if (header[3] == 0) {
*rodata_buffer = NULL;
} else {
qualified_filename = filename;
*rodata_buffer = reinterpret_cast<const uint8_t*>(read_only_buffer)
+ (rodata_position - vmisolate_position);
}
intptr_t len = -1;
*buffer = reinterpret_cast<uint8_t*>(
DartUtils::MapExecutable(qualified_filename, &len));
if ((*buffer == NULL) || (len == -1)) {
fprintf(stderr,
"Error: Unable to read snapshot file %s\n", qualified_filename);
fflush(stderr);
Platform::Exit(kErrorExitCode);
}
if (concat != NULL) {
delete[] concat;
}
}
static void* LoadLibrarySymbol(const char* snapshot_directory,
const char* libname,
const char* symname) {
char* concat = NULL;
const char* qualified_libname;
if ((snapshot_directory != NULL) && (strlen(snapshot_directory) > 0)) {
intptr_t len = snprintf(NULL, 0, "%s/%s", snapshot_directory, libname);
concat = new char[len + 1];
snprintf(concat, len + 1, "%s/%s", snapshot_directory, libname);
qualified_libname = concat;
if (header[4] == 0) {
*instructions_buffer = NULL;
} else {
qualified_libname = libname;
*instructions_buffer = reinterpret_cast<const uint8_t*>(
file->Map(File::kReadExecute, instructions_position, header[4]));
if (*instructions_buffer == NULL) {
ErrorExit(kErrorExitCode, "Failed to memory map snapshot2\n");
}
void* library = Extensions::LoadExtensionLibrary(qualified_libname);
if (concat != NULL) {
delete concat;
}
file->Release();
return true;
}
static bool ReadAppSnapshotDynamicLibrary(const char* script_name,
const uint8_t** vmisolate_buffer,
const uint8_t** isolate_buffer,
const uint8_t** instructions_buffer,
const uint8_t** rodata_buffer) {
void* library = Extensions::LoadExtensionLibrary(script_name);
if (library == NULL) {
return NULL;
return false;
}
return Extensions::ResolveSymbol(library, symname);
*vmisolate_buffer = reinterpret_cast<const uint8_t*>(
Extensions::ResolveSymbol(library, kPrecompiledVMIsolateSymbolName));
if (*vmisolate_buffer == NULL) {
ErrorExit(kErrorExitCode, "Failed to resolve symbol '%s'\n",
kPrecompiledVMIsolateSymbolName);
}
*isolate_buffer = reinterpret_cast<const uint8_t*>(
Extensions::ResolveSymbol(library, kPrecompiledIsolateSymbolName));
if (*isolate_buffer == NULL) {
ErrorExit(kErrorExitCode, "Failed to resolve symbol '%s'\n",
kPrecompiledIsolateSymbolName);
}
*instructions_buffer = reinterpret_cast<const uint8_t*>(
Extensions::ResolveSymbol(library, kPrecompiledInstructionsSymbolName));
if (*instructions_buffer == NULL) {
ErrorExit(kErrorExitCode, "Failed to resolve symbol '%s'\n",
kPrecompiledInstructionsSymbolName);
}
*rodata_buffer = reinterpret_cast<const uint8_t*>(
Extensions::ResolveSymbol(library, kPrecompiledDataSymbolName));
if (*rodata_buffer == NULL) {
ErrorExit(kErrorExitCode, "Failed to resolve symbol '%s'\n",
kPrecompiledDataSymbolName);
}
return true;
}
static bool ReadAppSnapshot(const char* script_name,
const uint8_t** vmisolate_buffer,
const uint8_t** isolate_buffer,
const uint8_t** instructions_buffer,
const uint8_t** rodata_buffer) {
if (File::GetType(script_name, true) != File::kIsFile) {
// If 'script_name' refers to a pipe, don't read to check for an app
// snapshot since we cannot rewind if it isn't (and couldn't mmap it in
// anyway if it was).
return false;
}
if (ReadAppSnapshotBlobs(script_name,
vmisolate_buffer,
isolate_buffer,
instructions_buffer,
rodata_buffer)) {
return true;
}
return ReadAppSnapshotDynamicLibrary(script_name,
vmisolate_buffer,
isolate_buffer,
instructions_buffer,
rodata_buffer);
}
static bool WriteInt64(File* file, int64_t size) {
return file->WriteFully(&size, sizeof(size));
}
static void WriteAppSnapshot(const char* filename,
uint8_t* vmisolate_buffer,
intptr_t vmisolate_size,
uint8_t* isolate_buffer,
intptr_t isolate_size,
uint8_t* instructions_buffer,
intptr_t instructions_size,
uint8_t* rodata_buffer,
intptr_t rodata_size) {
File* file = File::Open(filename, File::kWriteTruncate);
if (file == NULL) {
ErrorExit(kErrorExitCode, "Unable to write snapshot file '%s'\n", filename);
}
file->WriteFully(&kAppSnapshotMagicNumber, sizeof(kAppSnapshotMagicNumber));
WriteInt64(file, vmisolate_size);
WriteInt64(file, isolate_size);
WriteInt64(file, rodata_size);
WriteInt64(file, instructions_size);
ASSERT(file->Position() == kAppSnapshotHeaderSize);
file->SetPosition(Utils::RoundUp(file->Position(), kAppSnapshotPageSize));
if (!file->WriteFully(vmisolate_buffer, vmisolate_size)) {
ErrorExit(kErrorExitCode, "Unable to write snapshot file '%s'\n", filename);
}
file->SetPosition(Utils::RoundUp(file->Position(), kAppSnapshotPageSize));
if (!file->WriteFully(isolate_buffer, isolate_size)) {
ErrorExit(kErrorExitCode, "Unable to write snapshot file '%s'\n", filename);
}
if (rodata_size != 0) {
file->SetPosition(Utils::RoundUp(file->Position(), kAppSnapshotPageSize));
if (!file->WriteFully(rodata_buffer, rodata_size)) {
ErrorExit(kErrorExitCode, "Unable to write snapshot file '%s'\n",
filename);
}
}
if (instructions_size != 0) {
file->SetPosition(Utils::RoundUp(file->Position(), kAppSnapshotPageSize));
if (!file->WriteFully(instructions_buffer, instructions_size)) {
ErrorExit(kErrorExitCode, "Unable to write snapshot file '%s'\n",
filename);
}
}
file->Flush();
file->Release();
}
@ -1334,35 +1425,24 @@ static void GeneratePrecompiledSnapshot() {
&rodata_blob_size);
} else {
result = Dart_CreatePrecompiledSnapshotAssembly(
&vm_isolate_buffer,
&vm_isolate_size,
&isolate_buffer,
&isolate_size,
&assembly_buffer,
&assembly_size);
}
if (Dart_IsError(result)) {
ErrorExit(kErrorExitCode, "%s\n", Dart_GetError(result));
}
WriteSnapshotFile(snapshot_filename, kVMIsolateSuffix,
false,
vm_isolate_buffer,
vm_isolate_size);
WriteSnapshotFile(snapshot_filename, kIsolateSuffix,
false,
isolate_buffer,
isolate_size);
if (use_blobs) {
WriteSnapshotFile(snapshot_filename, kInstructionsSuffix,
false,
WriteAppSnapshot(snapshot_filename,
vm_isolate_buffer,
vm_isolate_size,
isolate_buffer,
isolate_size,
instructions_blob_buffer,
instructions_blob_size);
WriteSnapshotFile(snapshot_filename, kRODataSuffix,
false,
instructions_blob_size,
rodata_blob_buffer,
rodata_blob_size);
} else {
WriteSnapshotFile(snapshot_filename, kAssemblySuffix,
WriteSnapshotFile(NULL, snapshot_filename,
false,
assembly_buffer,
assembly_size);
@ -1371,10 +1451,6 @@ static void GeneratePrecompiledSnapshot() {
static void GeneratePrecompiledJITSnapshot() {
if (!use_blobs) {
ErrorExit(kErrorExitCode,
"Generating app JIT snapshots as assembly unimplemented\n");
}
uint8_t* vm_isolate_buffer = NULL;
intptr_t vm_isolate_size = 0;
uint8_t* isolate_buffer = NULL;
@ -1395,20 +1471,13 @@ static void GeneratePrecompiledJITSnapshot() {
if (Dart_IsError(result)) {
ErrorExit(kErrorExitCode, "%s\n", Dart_GetError(result));
}
WriteSnapshotFile(snapshot_filename, kVMIsolateSuffix,
false,
WriteAppSnapshot(snapshot_filename,
vm_isolate_buffer,
vm_isolate_size);
WriteSnapshotFile(snapshot_filename, kIsolateSuffix,
false,
vm_isolate_size,
isolate_buffer,
isolate_size);
WriteSnapshotFile(snapshot_filename, kInstructionsSuffix,
false,
isolate_size,
instructions_blob_buffer,
instructions_blob_size);
WriteSnapshotFile(snapshot_filename, kRODataSuffix,
false,
instructions_blob_size,
rodata_blob_buffer,
rodata_blob_size);
}
@ -1430,16 +1499,12 @@ static void GenerateFullSnapshot() {
ErrorExit(kErrorExitCode, "%s\n", Dart_GetError(result));
}
WriteSnapshotFile(snapshot_filename,
kVMIsolateSuffix,
false,
WriteAppSnapshot(snapshot_filename,
vm_isolate_buffer,
vm_isolate_size);
WriteSnapshotFile(snapshot_filename,
kIsolateSuffix,
false,
vm_isolate_size,
isolate_buffer,
isolate_size);
isolate_size,
NULL, 0, NULL, 0);
}
@ -1783,6 +1848,17 @@ void main(int argc, char** argv) {
Platform::Exit(kErrorExitCode);
}
const uint8_t* instructions_snapshot = NULL;
const uint8_t* data_snapshot = NULL;
if (ReadAppSnapshot(script_name,
&vm_isolate_snapshot_buffer,
&isolate_snapshot_buffer,
&instructions_snapshot,
&data_snapshot)) {
run_app_snapshot = true;
}
#if !defined(PRODUCT) && !defined(DART_PRECOMPILED_RUNTIME)
// Constant true if PRODUCT or DART_PRECOMPILED_RUNTIME.
if ((gen_snapshot_kind != kNone) || run_app_snapshot) {
@ -1806,31 +1882,6 @@ void main(int argc, char** argv) {
TimerUtils::InitOnce();
EventHandler::Start();
const uint8_t* instructions_snapshot = NULL;
const uint8_t* data_snapshot = NULL;
if (run_app_snapshot) {
ReadSnapshotFile(snapshot_filename, kVMIsolateSuffix,
&vm_isolate_snapshot_buffer);
ReadSnapshotFile(snapshot_filename, kIsolateSuffix,
&isolate_snapshot_buffer);
if (use_blobs) {
ReadExecutableSnapshotFile(snapshot_filename,
kInstructionsSuffix,
&instructions_snapshot);
ReadSnapshotFile(snapshot_filename, kRODataSuffix,
&data_snapshot);
} else {
instructions_snapshot = reinterpret_cast<const uint8_t*>(
LoadLibrarySymbol(snapshot_filename,
kPrecompiledLibraryName,
kPrecompiledInstructionsSymbolName));
data_snapshot = reinterpret_cast<const uint8_t*>(
LoadLibrarySymbol(snapshot_filename,
kPrecompiledLibraryName,
kPrecompiledDataSymbolName));
}
}
// Initialize the Dart VM.
Dart_InitializeParams init_params;
memset(&init_params, 0, sizeof(init_params));

4
runtime/include/dart_api.h
View file

@ -3115,10 +3115,6 @@ DART_EXPORT Dart_Handle Dart_Precompile(
* \return A valid handle if no error occurs during the operation.
*/
DART_EXPORT Dart_Handle Dart_CreatePrecompiledSnapshotAssembly(
uint8_t** vm_isolate_snapshot_buffer,
intptr_t* vm_isolate_snapshot_size,
uint8_t** isolate_snapshot_buffer,
intptr_t* isolate_snapshot_size,
uint8_t** assembly_buffer,
intptr_t* assembly_size);

5
runtime/vm/clustered_snapshot.cc
View file

@ -5287,7 +5287,10 @@ void FullSnapshotWriter::WriteFullSnapshot() {
WriteIsolateFullSnapshot(num_base_objects);
if (Snapshot::IncludesCode(kind_)) {
instructions_writer_->Write();
instructions_writer_->Write(*vm_isolate_snapshot_buffer_,
vm_isolate_snapshot_size_,
*isolate_snapshot_buffer_,
isolate_snapshot_size_);
OS::Print("VMIsolate(CodeSize): %" Pd "\n", VmIsolateSnapshotSize());
OS::Print("Isolate(CodeSize): %" Pd "\n", IsolateSnapshotSize());

28
runtime/vm/dart_api_impl.cc
View file

@ -6323,10 +6323,6 @@ DART_EXPORT Dart_Handle Dart_Precompile(
DART_EXPORT Dart_Handle Dart_CreatePrecompiledSnapshotAssembly(
uint8_t** vm_isolate_snapshot_buffer,
intptr_t* vm_isolate_snapshot_size,
uint8_t** isolate_snapshot_buffer,
intptr_t* isolate_snapshot_size,
uint8_t** assembly_buffer,
intptr_t* assembly_size) {
UNREACHABLE();
@ -6378,10 +6374,6 @@ DART_EXPORT Dart_Handle Dart_Precompile(
DART_EXPORT Dart_Handle Dart_CreatePrecompiledSnapshotAssembly(
uint8_t** vm_isolate_snapshot_buffer,
intptr_t* vm_isolate_snapshot_size,
uint8_t** isolate_snapshot_buffer,
intptr_t* isolate_snapshot_size,
uint8_t** assembly_buffer,
intptr_t* assembly_size) {
#if defined(TARGET_ARCH_IA32)
@ -6397,18 +6389,6 @@ DART_EXPORT Dart_Handle Dart_CreatePrecompiledSnapshotAssembly(
"Did you forget to call Dart_Precompile?");
}
ASSERT(FLAG_load_deferred_eagerly);
if (vm_isolate_snapshot_buffer == NULL) {
RETURN_NULL_ERROR(vm_isolate_snapshot_buffer);
}
if (vm_isolate_snapshot_size == NULL) {
RETURN_NULL_ERROR(vm_isolate_snapshot_size);
}
if (isolate_snapshot_buffer == NULL) {
RETURN_NULL_ERROR(isolate_snapshot_buffer);
}
if (isolate_snapshot_size == NULL) {
RETURN_NULL_ERROR(isolate_snapshot_size);
}
if (assembly_buffer == NULL) {
RETURN_NULL_ERROR(assembly_buffer);
}
@ -6421,15 +6401,15 @@ DART_EXPORT Dart_Handle Dart_CreatePrecompiledSnapshotAssembly(
AssemblyInstructionsWriter instructions_writer(assembly_buffer,
ApiReallocate,
2 * MB /* initial_size */);
uint8_t* vm_isolate_snapshot_buffer = NULL;
uint8_t* isolate_snapshot_buffer = NULL;
FullSnapshotWriter writer(Snapshot::kAppNoJIT,
vm_isolate_snapshot_buffer,
isolate_snapshot_buffer,
&vm_isolate_snapshot_buffer,
&isolate_snapshot_buffer,
ApiReallocate,
&instructions_writer);
writer.WriteFullSnapshot();
*vm_isolate_snapshot_size = writer.VmIsolateSnapshotSize();
*isolate_snapshot_size = writer.IsolateSnapshotSize();
*assembly_size = instructions_writer.AssemblySize();
return Api::Success();

25
runtime/vm/snapshot.cc
View file

@ -704,7 +704,10 @@ static void EnsureIdentifier(char* label) {
}
void AssemblyInstructionsWriter::Write() {
void AssemblyInstructionsWriter::Write(uint8_t* vmisolate_buffer,
intptr_t vmisolate_length,
uint8_t* isolate_buffer,
intptr_t isolate_length) {
Thread* thread = Thread::Current();
Zone* zone = thread->zone();
NOT_IN_PRODUCT(TimelineDurationScope tds(thread,
@ -849,10 +852,28 @@ void AssemblyInstructionsWriter::Write() {
WriteWordLiteralData(*cursor);
}
}
assembly_stream_.Print(".globl _kVmIsolateSnapshot\n");
assembly_stream_.Print(".balign %" Pd ", 0\n", VirtualMemory::PageSize());
assembly_stream_.Print("_kVmIsolateSnapshot:\n");
for (intptr_t i = 0; i < vmisolate_length; i++) {
assembly_stream_.Print(".byte %" Pd "\n", vmisolate_buffer[i]);
}
assembly_stream_.Print(".globl _kIsolateSnapshot\n");
assembly_stream_.Print(".balign %" Pd ", 0\n", VirtualMemory::PageSize());
assembly_stream_.Print("_kIsolateSnapshot:\n");
for (intptr_t i = 0; i < isolate_length; i++) {
assembly_stream_.Print(".byte %" Pd "\n", isolate_buffer[i]);
}
}
void BlobInstructionsWriter::Write() {
void BlobInstructionsWriter::Write(uint8_t* vmisolate_buffer,
intptr_t vmisolate_len,
uint8_t* isolate_buffer,
intptr_t isolate_length) {
Thread* thread = Thread::Current();
Zone* zone = thread->zone();
NOT_IN_PRODUCT(TimelineDurationScope tds(thread,

15
runtime/vm/snapshot.h
View file

@ -750,7 +750,10 @@ class InstructionsWriter : public ZoneAllocated {
int32_t GetObjectOffsetFor(RawObject* raw_object);
virtual void Write() = 0;
virtual void Write(uint8_t* vmisolate_buffer,
intptr_t vmisolate_length,
uint8_t* isolate_buffer,
intptr_t isolate_length) = 0;
virtual intptr_t text_size() = 0;
virtual intptr_t data_size() = 0;
@ -803,7 +806,10 @@ class AssemblyInstructionsWriter : public InstructionsWriter {
data_size_(0) {
}
virtual void Write();
virtual void Write(uint8_t* vmisolate_buffer,
intptr_t vmisolate_length,
uint8_t* isolate_buffer,
intptr_t isolate_length);
virtual intptr_t text_size() { return text_size_; }
virtual intptr_t data_size() { return data_size_; }
@ -849,7 +855,10 @@ class BlobInstructionsWriter : public InstructionsWriter {
rodata_blob_stream_(rodata_blob_buffer, alloc, initial_size) {
}
virtual void Write();
virtual void Write(uint8_t* vmisolate_buffer,
intptr_t vmisolate_length,
uint8_t* isolate_buffer,
intptr_t isolate_length);
virtual intptr_t text_size() { return InstructionsBlobSize(); }
virtual intptr_t data_size() { return RodataBlobSize(); }

18
tools/testing/dart/compiler_configuration.dart
View file

@ -369,10 +369,12 @@ class PrecompilerCompilerConfiguration extends CompilerConfiguration {
Map<String, String> environmentOverrides) {
var exec = "$buildDir/dart_bootstrap";
var args = new List();
args.add("--snapshot=$tempDir");
args.add("--snapshot-kind=app-aot");
if (useBlobs) {
args.add("--snapshot=$tempDir/out.aotsnapshot");
args.add("--use-blobs");
} else {
args.add("--snapshot=$tempDir/out.S");
}
if (isAndroid && arch == 'arm') {
args.add('--no-sim-use-hardfp');
@ -390,15 +392,13 @@ class PrecompilerCompilerConfiguration extends CompilerConfiguration {
List arguments,
Map<String, String> environmentOverrides) {
var cc, shared, libname;
var cc, shared;
if (Platform.isLinux) {
cc = 'gcc';
shared = '-shared';
libname = 'libprecompiled.so';
} else if (Platform.isMacOS) {
cc = 'clang';
shared = '-dynamiclib';
libname = 'libprecompiled.dylib';
} else {
throw "Platform not supported: ${Platform.operatingSystem}";
}
@ -430,8 +430,8 @@ class PrecompilerCompilerConfiguration extends CompilerConfiguration {
var args = (cc_flags != null) ? [ shared, cc_flags ] : [ shared ];
args.addAll([
'-o',
'$tempDir/$libname',
'$tempDir/snapshot.S'
'$tempDir/out.aotsnapshot',
'$tempDir/out.S'
]);
return commandBuilder.getCompilationCommand('assemble', tempDir, !useSdk,
@ -447,7 +447,7 @@ class PrecompilerCompilerConfiguration extends CompilerConfiguration {
List arguments,
Map<String, String> environmentOverrides) {
var exec = 'rm';
var args = ['$tempDir/snapshot.S'];
var args = ['$tempDir/out.S'];
return commandBuilder.getCompilationCommand(
'remove_assembly',
@ -532,7 +532,7 @@ class Dart2AppSnapshotCompilerConfiguration extends CompilerConfiguration {
Map<String, String> environmentOverrides) {
var exec = "$buildDir/dart_bootstrap";
var args = new List();
args.add("--snapshot=$tempDir");
args.add("--snapshot=$tempDir/out.jitsnapshot");
args.add("--snapshot-kind=app-after-run");
args.addAll(arguments);
@ -592,7 +592,7 @@ class Dart2AppJitSnapshotCompilerConfiguration extends Dart2AppSnapshotCompilerC
Map<String, String> environmentOverrides) {
var exec = "$buildDir/dart";
var args = new List();
args.add("--snapshot=$tempDir");
args.add("--snapshot=$tempDir/out.jitsnapshot");
args.add("--snapshot-kind=app-jit-after-run");
if (useBlobs) {
args.add("--use-blobs");

28
tools/testing/dart/runtime_configuration.dart
View file

@ -4,6 +4,8 @@
library runtime_configuration;
import 'dart:io' show Platform;
import 'compiler_configuration.dart' show CommandArtifact;
// TODO(ahe): Remove this import, we can precompute all the values required
@ -244,16 +246,17 @@ class DartAppRuntimeConfiguration extends DartVmRuntimeConfiguration {
throw "dart_app cannot run files of type '$type'.";
}
var augmentedArgs = new List();
augmentedArgs.add("--run-app-snapshot=${artifact.filename}");
if (useBlobs) {
augmentedArgs.add("--use-blobs");
var args = new List();
args.addAll(arguments);
for (var i = 0; i < args.length; i++) {
if (args[i].endsWith(".dart")) {
args[i] = "${artifact.filename}/out.jitsnapshot";
}
}
augmentedArgs.addAll(arguments);
return <Command>[
commandBuilder.getVmCommand(suite.dartVmBinaryFileName,
augmentedArgs, environmentOverrides)
args, environmentOverrides)
];
}
}
@ -274,16 +277,17 @@ class DartPrecompiledRuntimeConfiguration extends DartVmRuntimeConfiguration {
throw "dart_precompiled cannot run files of type '$type'.";
}
var augmentedArgs = new List();
augmentedArgs.add("--run-app-snapshot=${artifact.filename}");
if (useBlobs) {
augmentedArgs.add("--use-blobs");
var args = new List();
args.addAll(arguments);
for (var i = 0; i < args.length; i++) {
if (args[i].endsWith(".dart")) {
args[i] = "${artifact.filename}/out.aotsnapshot";
}
}
augmentedArgs.addAll(arguments);
return <Command>[
commandBuilder.getVmCommand(suite.dartPrecompiledBinaryFileName,
augmentedArgs, environmentOverrides)
args, environmentOverrides)
];
}
}