Load service isolate from the kernel binary.

runtime/tools/create_service_isolate_bindata.py

+#!/usr/bin/env python
+# Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
+# for details. All rights reserved. Use of this source code is governed by a
+# BSD-style license that can be found in the LICENSE file.
+#
+# This python script creates a literal array of uint8_t data which represents
+# binary data of the kernel to be loaded in to the service isolate of the
+# dart VM.
+
+import optparse
+import os
+import subprocess
+import sys
+
+
+VMSERVICE_IO_URI = "dart:vmservice_io"
+
+
+def get_options():
+  parser = optparse.OptionParser()
+  parser.add_option("--build_dir", "-b",
+                    action="store", type="string",
+                    help="Path to the build dir.")
+  parser.add_option("--output", "-o",
+                    action="store", type="string",
+                    help="output file name")
+  parser.add_option("--empty", "-e",
+                    action="store_true", default=False,
+                    help="Generate empty service isolate binary data.")
+  options, _ = parser.parse_args()
+  if not options.output:
+    sys.exit("--output not specified")
+  if not options.build_dir:
+    sys.exit("--build_dir not specified")
+  return options
+
+
+class ServiceDillGenerator(object):
+
+  def __init__(self, options):
+    self._empty_dill = options.empty
+    self._cc_file = options.output
+    self._service_dill = os.path.join(os.path.dirname(options.output),
+                                         'service.dill')
+    self._dart_bootstrap = os.path.join(options.build_dir, "dart_bootstrap")
+    self._compiler = os.path.join(
+        options.build_dir, os.pardir, os.pardir,
+        "pkg", "front_end", "tool", "_fasta", "compile.dart")
+
+  def gen_service_isolate_bin_data(self):
+    with open(self._cc_file, 'w') as cc:
+      cc.write("#include \"bin/service_isolate_bindata.h\"\n")
+      cc.write("const uint8_t service_isolate_kernel_bindata_[] = {\n")
+      if self._empty_dill:
+        size = 0
+      else:
+        self._generate_service_dill()
+        size = self._write_service_dill_to_cc_file(cc)
+      cc.write("};\n")
+      cc.write(
+          "const intptr_t service_isolate_kernel_bindata_size_ = %d;\n" % size)
+
+  def _generate_service_dill(self):
+    cmd = [
+        self._dart_bootstrap, self._compiler,
+        "--compile-sdk", "patched_sdk/",
+        "--packages=../../.packages",
+        VMSERVICE_IO_URI,
+        "-o", self._service_dill,
+    ]
+    p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+    out, err = p.communicate()
+    if p.returncode != 0:
+      sys.exit(err + '\n' + out)
+
+  def _write_service_dill_to_cc_file(self, cc_file):
+    bytecount = 0
+    with open(self._service_dill, 'rb') as kernel:
+      while True:
+        byte = kernel.read(1)
+        if byte == '':
+          # Read until EOF.
+          break
+        bytecount += 1
+        cc_file.write(hex(ord(byte)) + ', ')
+        if bytecount % 8 == 0:
+          cc_file.write('\n')
+    return bytecount
+  
+
+def main():
+  options = get_options()
+  generator = ServiceDillGenerator(get_options())
+  generator.gen_service_isolate_bin_data()
+
+
+if __name__ == '__main__':
+  main()