mirror of
https://github.com/fergalmoran/ladybird.git
synced 2026-01-20 15:36:12 +00:00
8c5e64e686
On macOS, it's not trivial to get a Mach task port for your children. This implementation registers the chrome process as a well-known service with launchd based on its pid, and lets each child process send over a reference to its mach_task_self() back to the chrome. We'll need this Mach task port right to get process statistics.
55 lines
1.8 KiB
C++
55 lines
1.8 KiB
C++
/*
|
|
* Copyright (c) 2024, Andrew Kaster <akaster@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <AK/Platform.h>
|
|
|
|
#if !defined(AK_OS_MACH)
|
|
# error "This file is only available on Mach platforms"
|
|
#endif
|
|
|
|
#include <AK/ByteString.h>
|
|
#include <LibCore/MachPort.h>
|
|
#include <LibWebView/Platform/ProcessStatisticsMach.h>
|
|
|
|
namespace WebView {
|
|
|
|
ErrorOr<void> update_process_statistics(ProcessStatistics&)
|
|
{
|
|
return {};
|
|
}
|
|
|
|
void register_with_mach_server(ByteString const& server_name)
|
|
{
|
|
auto server_port_or_error = Core::MachPort::look_up_from_bootstrap_server(server_name);
|
|
if (server_port_or_error.is_error()) {
|
|
dbgln("Failed to lookup server port: {}", server_port_or_error.error());
|
|
return;
|
|
}
|
|
auto server_port = server_port_or_error.release_value();
|
|
|
|
// Send our own task port to the server so they can query statistics about us
|
|
ChildPortMessage message {};
|
|
message.header.msgh_bits = MACH_MSGH_BITS(MACH_MSG_TYPE_COPY_SEND, MACH_MSGH_BITS_ZERO) | MACH_MSGH_BITS_COMPLEX;
|
|
message.header.msgh_size = sizeof(message);
|
|
message.header.msgh_remote_port = server_port.port();
|
|
message.header.msgh_local_port = MACH_PORT_NULL;
|
|
message.header.msgh_id = SELF_TASK_PORT_MESSAGE_ID;
|
|
message.body.msgh_descriptor_count = 1;
|
|
message.port_descriptor.name = mach_task_self();
|
|
message.port_descriptor.disposition = MACH_MSG_TYPE_COPY_SEND;
|
|
message.port_descriptor.type = MACH_MSG_PORT_DESCRIPTOR;
|
|
|
|
mach_msg_timeout_t const timeout = 100; // milliseconds
|
|
|
|
auto const send_result = mach_msg(&message.header, MACH_SEND_MSG | MACH_SEND_TIMEOUT, message.header.msgh_size, 0, MACH_PORT_NULL, timeout, MACH_PORT_NULL);
|
|
if (send_result != KERN_SUCCESS) {
|
|
dbgln("Failed to send message to server: {}", mach_error_string(send_result));
|
|
return;
|
|
}
|
|
}
|
|
|
|
}
|