mirror of
https://bitbucket.org/chromiumembedded/cef
synced 2025-06-05 21:39:12 +02:00
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
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# reserved. Use of this source code is governed by a BSD-style license that
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# can be found in the LICENSE file.
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from __future__ import absolute_import
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from cef_parser import get_copyright
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from file_util import *
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import sys
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def make_config_header(gn_config):
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""" Creates the header file contents for the cef build configuration. """
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if not path_exists(gn_config):
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raise Exception('File ' + gn_config + ' does not exist.')
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defines = []
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lines = read_file(gn_config).split("\n")
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# The following #defines are used in cef/include/ headers and CEF client-side code.
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# CEF library-side code will get these #defines from include/base/cef_build.h so
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# any changes must also be reflected there.
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# All Linux builds use Ozone, and the X11 platform is enabled by default.
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# Check if the config is explicitly disabling it.
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if sys.platform.startswith('linux') and \
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not 'ozone_platform_x11=false' in lines:
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defines.append('#define CEF_X11 1')
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# If the V8 sandbox is not disabled explicitly and
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# the target_cpu is arm64 or x64 (see v8_enable_pointer_compression)
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# add CEF_V8_ENABLE_SANDBOX define used in cef_message_router.h
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if not 'v8_enable_sandbox=false' in lines and \
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('target_cpu="arm64"' in lines or 'target_cpu="x64"' in lines):
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defines.append('#define CEF_V8_ENABLE_SANDBOX 1')
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result = get_copyright(full=True, translator=False) + \
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"""//
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// ---------------------------------------------------------------------------
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//
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// This file is generated by the make_config_header.py tool.
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//
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#ifndef CEF_INCLUDE_CEF_CONFIG_H_
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#define CEF_INCLUDE_CEF_CONFIG_H_
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$DEFINES$
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#endif // CEF_INCLUDE_CEF_CONFIG_H_
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"""
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result = result.replace('$DEFINES$', "\n".join(defines))
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return result
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def write_config_header(output, gn_config):
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output = os.path.abspath(output)
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result = make_config_header(gn_config)
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return write_file_if_changed(output, result)
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def main(argv):
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if len(argv) < 3:
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print(("Usage:\n %s <output_header_file> <input_args_gn_file>" % argv[0]))
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sys.exit(-1)
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write_config_header(argv[1], argv[2])
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if '__main__' == __name__:
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main(sys.argv)
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