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101 lines
4.5 KiB
C
101 lines
4.5 KiB
C
// Copyright (c) 2022 Marshall A. Greenblatt. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the name Chromium Embedded
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// Framework nor the names of its contributors may be used to endorse
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// or promote products derived from this software without specific prior
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// written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef CEF_INCLUDE_INTERNAL_CEF_APP_WIN_H_
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#define CEF_INCLUDE_INTERNAL_CEF_APP_WIN_H_
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#pragma once
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#include "include/base/cef_build.h"
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#if defined(OS_WIN)
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#if defined(ARCH_CPU_32_BITS)
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#include <windows.h>
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if defined(ARCH_CPU_32_BITS)
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typedef int(APIENTRY* wWinMainPtr)(HINSTANCE hInstance,
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HINSTANCE hPrevInstance,
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LPWSTR lpCmdLine,
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int nCmdShow);
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typedef int (*mainPtr)(int argc, char* argv[]);
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///
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/// Run the main thread on 32-bit Windows using a fiber with the preferred 4MiB
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/// stack size. This function must be called at the top of the executable entry
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/// point function (`main()` or `wWinMain()`). It is used in combination with
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/// the initial stack size of 0.5MiB configured via the `/STACK:0x80000` linker
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/// flag on executable targets. This saves significant memory on threads (like
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/// those in the Windows thread pool, and others) whose stack size can only be
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/// controlled via the linker flag.
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///
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/// CEF's main thread needs at least a 1.5 MiB stack size in order to avoid
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/// stack overflow crashes. However, if this is set in the PE file then other
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/// threads get this size as well, leading to address-space exhaustion in 32-bit
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/// CEF. This function uses fibers to switch the main thread to a 4 MiB stack
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/// (roughly the same effective size as the 64-bit build's 8 MiB stack) before
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/// running any other code.
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///
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/// Choose the function variant that matches the entry point function type used
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/// by the executable. Reusing the entry point minimizes confusion when
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/// examining call stacks in crash reports.
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///
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/// If this function is already running on the fiber it will return -1
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/// immediately, meaning that execution should proceed with the remainder of the
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/// entry point function. Otherwise, this function will block until the entry
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/// point function has completed execution on the fiber and then return a result
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/// >= 0, meaning that the entry point function should return the result
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/// immediately without proceeding with execution.
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///
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CEF_EXPORT int cef_run_winmain_with_preferred_stack_size(wWinMainPtr wWinMain,
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HINSTANCE hInstance,
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LPWSTR lpCmdLine,
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int nCmdShow);
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CEF_EXPORT int cef_run_main_with_preferred_stack_size(mainPtr main,
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int argc,
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char* argv[]);
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#endif // defined(ARCH_CPU_32_BITS)
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///
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/// Set to true (1) before calling Windows APIs like TrackPopupMenu that enter a
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/// modal message loop. Set to false (0) after exiting the modal message loop.
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///
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CEF_EXPORT void cef_set_osmodal_loop(int osModalLoop);
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#ifdef __cplusplus
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}
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#endif
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#endif // defined(OS_WIN)
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#endif // CEF_INCLUDE_INTERNAL_CEF_APP_WIN_H_
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