mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-22 15:40:19 +00:00
5062ba347b
Re-organize our helper files here a bit, to make a clearer distinction between Qt-specific helpers and generic non-serenity helpers. A future commit will move Lagom specific code from LibSQL to ladybird as well, so that we can see about future generic apis for spawning helper procesess.
85 lines
3.3 KiB
C++
85 lines
3.3 KiB
C++
/*
|
|
* Copyright (c) 2023, Andrew Kaster <akaster@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include "HelperProcess.h"
|
|
|
|
ErrorOr<NonnullRefPtr<WebView::WebContentClient>> launch_web_content_process(WebView::ViewImplementation& view,
|
|
ReadonlySpan<String> candidate_web_content_paths,
|
|
WebView::EnableCallgrindProfiling enable_callgrind_profiling,
|
|
WebView::IsLayoutTestMode is_layout_test_mode,
|
|
WebView::UseJavaScriptBytecode use_javascript_bytecode)
|
|
{
|
|
int socket_fds[2] {};
|
|
TRY(Core::System::socketpair(AF_LOCAL, SOCK_STREAM, 0, socket_fds));
|
|
|
|
int ui_fd = socket_fds[0];
|
|
int wc_fd = socket_fds[1];
|
|
|
|
int fd_passing_socket_fds[2] {};
|
|
TRY(Core::System::socketpair(AF_LOCAL, SOCK_STREAM, 0, fd_passing_socket_fds));
|
|
|
|
int ui_fd_passing_fd = fd_passing_socket_fds[0];
|
|
int wc_fd_passing_fd = fd_passing_socket_fds[1];
|
|
|
|
if (auto child_pid = TRY(Core::System::fork()); child_pid == 0) {
|
|
TRY(Core::System::close(ui_fd_passing_fd));
|
|
TRY(Core::System::close(ui_fd));
|
|
|
|
auto takeover_string = TRY(String::formatted("WebContent:{}", wc_fd));
|
|
TRY(Core::System::setenv("SOCKET_TAKEOVER"sv, takeover_string, true));
|
|
|
|
auto webcontent_fd_passing_socket_string = TRY(String::number(wc_fd_passing_fd));
|
|
|
|
ErrorOr<void> result;
|
|
for (auto const& path : candidate_web_content_paths) {
|
|
constexpr auto callgrind_prefix_length = 3;
|
|
|
|
if (Core::System::access(path, X_OK).is_error())
|
|
continue;
|
|
|
|
auto arguments = Vector {
|
|
"valgrind"sv,
|
|
"--tool=callgrind"sv,
|
|
"--instr-atstart=no"sv,
|
|
path.bytes_as_string_view(),
|
|
"--webcontent-fd-passing-socket"sv,
|
|
webcontent_fd_passing_socket_string
|
|
};
|
|
if (enable_callgrind_profiling == WebView::EnableCallgrindProfiling::No)
|
|
arguments.remove(0, callgrind_prefix_length);
|
|
if (is_layout_test_mode == WebView::IsLayoutTestMode::Yes)
|
|
arguments.append("--layout-test-mode"sv);
|
|
if (use_javascript_bytecode == WebView::UseJavaScriptBytecode::Yes)
|
|
arguments.append("--use-bytecode"sv);
|
|
|
|
result = Core::System::exec(arguments[0], arguments.span(), Core::System::SearchInPath::Yes);
|
|
if (!result.is_error())
|
|
break;
|
|
}
|
|
|
|
if (result.is_error())
|
|
warnln("Could not launch any of {}: {}", candidate_web_content_paths, result.error());
|
|
VERIFY_NOT_REACHED();
|
|
}
|
|
|
|
TRY(Core::System::close(wc_fd_passing_fd));
|
|
TRY(Core::System::close(wc_fd));
|
|
|
|
auto socket = TRY(Core::LocalSocket::adopt_fd(ui_fd));
|
|
TRY(socket->set_blocking(true));
|
|
|
|
auto new_client = TRY(adopt_nonnull_ref_or_enomem(new (nothrow) WebView::WebContentClient(move(socket), view)));
|
|
new_client->set_fd_passing_socket(TRY(Core::LocalSocket::adopt_fd(ui_fd_passing_fd)));
|
|
|
|
if (enable_callgrind_profiling == WebView::EnableCallgrindProfiling::Yes) {
|
|
dbgln();
|
|
dbgln("\033[1;45mLaunched WebContent process under callgrind!\033[0m");
|
|
dbgln("\033[100mRun `\033[4mcallgrind_control -i on\033[24m` to start instrumentation and `\033[4mcallgrind_control -i off\033[24m` stop it again.\033[0m");
|
|
dbgln();
|
|
}
|
|
|
|
return new_client;
|
|
}
|