mirror of
https://bitbucket.org/chromiumembedded/cef
synced 2024-12-26 01:23:53 +01:00
295ea1f715
When the V8 sandbox is enabled, ArrayBuffer backing stores must be allocated inside the sandbox address space. This change introduces a new CefV8Value::CreateArrayBufferWithCopy method that copies the memory contents into the sandbox address space. Enabling the V8 sandbox can have a performance impact, especially when passing large ArrayBuffers from C++ code to the JS side. We have therefore retained the old CefV8Value::CreateArrayBuffer method that references external memory. However, this method can only be used if the V8 sandbox is disabled at CEF/Chromium build time. To disable the V8 sandbox add `v8_enable_sandbox=false` to `GN_DEFINES` when building CEF/Chromium.
72 lines
2.2 KiB
Python
72 lines
2.2 KiB
Python
# Copyright (c) 2019 The Chromium Embedded Framework Authors. All rights
|
|
# reserved. Use of this source code is governed by a BSD-style license that
|
|
# can be found in the LICENSE file.
|
|
|
|
from __future__ import absolute_import
|
|
from cef_parser import get_copyright
|
|
from file_util import *
|
|
import sys
|
|
|
|
|
|
def make_config_header(gn_config):
|
|
""" Creates the header file contents for the cef build configuration. """
|
|
|
|
if not path_exists(gn_config):
|
|
raise Exception('File ' + gn_config + ' does not exist.')
|
|
|
|
defines = []
|
|
|
|
lines = read_file(gn_config).split("\n")
|
|
|
|
# The following #defines are used in cef/include/ headers and CEF client-side code.
|
|
# CEF library-side code will get these #defines from include/base/cef_build.h so
|
|
# any changes must also be reflected there.
|
|
|
|
# All Linux builds use Ozone, and the X11 platform is enabled by default.
|
|
# Check if the config is explicitly disabling it.
|
|
if sys.platform.startswith('linux') and \
|
|
not 'ozone_platform_x11=false' in lines:
|
|
defines.append('#define CEF_X11 1')
|
|
|
|
# If the V8 sandbox is not disabled explicitly and
|
|
# the target_cpu is arm64 or x64 (see v8_enable_pointer_compression)
|
|
# add CEF_V8_ENABLE_SANDBOX define used in cef_message_router.h
|
|
if not 'v8_enable_sandbox=false' in lines and \
|
|
('target_cpu="arm64"' in lines or 'target_cpu="x64"' in lines):
|
|
defines.append('#define CEF_V8_ENABLE_SANDBOX 1')
|
|
|
|
result = get_copyright(full=True, translator=False) + \
|
|
"""//
|
|
// ---------------------------------------------------------------------------
|
|
//
|
|
// This file is generated by the make_config_header.py tool.
|
|
//
|
|
|
|
#ifndef CEF_INCLUDE_CEF_CONFIG_H_
|
|
#define CEF_INCLUDE_CEF_CONFIG_H_
|
|
|
|
$DEFINES$
|
|
|
|
#endif // CEF_INCLUDE_CEF_CONFIG_H_
|
|
"""
|
|
|
|
result = result.replace('$DEFINES$', "\n".join(defines))
|
|
return result
|
|
|
|
|
|
def write_config_header(output, gn_config):
|
|
output = os.path.abspath(output)
|
|
result = make_config_header(gn_config)
|
|
return write_file_if_changed(output, result)
|
|
|
|
|
|
def main(argv):
|
|
if len(argv) < 3:
|
|
print(("Usage:\n %s <output_header_file> <input_args_gn_file>" % argv[0]))
|
|
sys.exit(-1)
|
|
write_config_header(argv[1], argv[2])
|
|
|
|
|
|
if '__main__' == __name__:
|
|
main(sys.argv)
|