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Everywhere: Use IOSurface as backing store on macOS

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Using mmap-allocated memory for backing stores does not allow us to
benefit from using GPU-accelerated painting, because all the performance
increase we get is mostly negated by reading the GPU-allocated texture
back into RAM, so it can be shared with the browser process.

With IOSurface, we get a framebuffer that is both shareable between
processes and can be used as underlying memory for an OpenGL/Metal
texture.

This change does not yet benefit from using IOSurface and merely wraps
them into Gfx::Bitmap to be used by the CPU painter.
This commit is contained in:
Aliaksandr Kalenik
2024-06-20 21:34:51 +03:00
committed by Andreas Kling
parent e37071ae05
commit c92f8ab1ea
15 changed files with 266 additions and 56 deletions
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41
Ladybird/MachPortServer.cpp
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@@ -6,6 +6,7 @@
#include "MachPortServer.h"
#include <AK/Debug.h>
#include <LibCore/Platform/MachMessageTypes.h>
#include <LibCore/Platform/ProcessStatisticsMach.h>
namespace Ladybird {
@@ -55,8 +56,7 @@ ErrorOr<void> MachPortServer::allocate_server_port()
void MachPortServer::thread_loop()
{
while (!m_should_stop.load(MemoryOrder::memory_order_acquire)) {
Core::Platform::ParentPortMessage message {};
Core::Platform::ReceivedMachMessage message {};
// Get the pid of the child from the audit trailer so we can associate the port w/it
mach_msg_options_t const options = MACH_RCV_MSG | MACH_RCV_TRAILER_TYPE(MACH_RCV_TRAILER_AUDIT) | MACH_RCV_TRAILER_ELEMENTS(MACH_RCV_TRAILER_AUDIT);
@@ -68,23 +68,38 @@ void MachPortServer::thread_loop()
break;
}
if (message.header.msgh_id != Core::Platform::SELF_TASK_PORT_MESSAGE_ID) {
dbgln("Received message with id {}, ignoring", message.header.msgh_id);
if (message.header.msgh_id == Core::Platform::BACKING_STORE_IOSURFACES_MESSAGE_ID) {
auto pid = static_cast<pid_t>(message.body.parent_iosurface.trailer.msgh_audit.val[5]);
auto const& backing_stores_message = message.body.parent_iosurface;
auto front_child_port = Core::MachPort::adopt_right(backing_stores_message.front_descriptor.name, Core::MachPort::PortRight::Send);
auto back_child_port = Core::MachPort::adopt_right(backing_stores_message.back_descriptor.name, Core::MachPort::PortRight::Send);
auto const& metadata = backing_stores_message.metadata;
if (on_receive_backing_stores)
on_receive_backing_stores({ .pid = pid,
.page_id = metadata.page_id,
.front_backing_store_id = metadata.front_backing_store_id,
.back_backing_store_id = metadata.back_backing_store_id,
.front_backing_store_port = move(front_child_port),
.back_backing_store_port = move(back_child_port) });
continue;
}
if (MACH_MSGH_BITS_LOCAL(message.header.msgh_bits) != MACH_MSG_TYPE_MOVE_SEND) {
dbgln("Received message with invalid local port rights {}, ignoring", MACH_MSGH_BITS_LOCAL(message.header.msgh_bits));
if (message.header.msgh_id == Core::Platform::SELF_TASK_PORT_MESSAGE_ID) {
if (MACH_MSGH_BITS_LOCAL(message.header.msgh_bits) != MACH_MSG_TYPE_MOVE_SEND) {
dbgln("Received message with invalid local port rights {}, ignoring", MACH_MSGH_BITS_LOCAL(message.header.msgh_bits));
continue;
}
auto const& task_port_message = message.body.parent;
auto pid = static_cast<pid_t>(task_port_message.trailer.msgh_audit.val[5]);
auto child_port = Core::MachPort::adopt_right(task_port_message.port_descriptor.name, Core::MachPort::PortRight::Send);
dbgln_if(MACH_PORT_DEBUG, "Received child port {:x} from pid {}", child_port.port(), pid);
if (on_receive_child_mach_port)
on_receive_child_mach_port(pid, move(child_port));
continue;
}
auto pid = static_cast<pid_t>(message.trailer.msgh_audit.val[5]);
auto child_port = Core::MachPort::adopt_right(message.port_descriptor.name, Core::MachPort::PortRight::Send);
dbgln_if(MACH_PORT_DEBUG, "Received child port {:x} from pid {}", child_port.port(), pid);
if (on_receive_child_mach_port)
on_receive_child_mach_port(pid, move(child_port));
dbgln("Received message with id {}, ignoring", message.header.msgh_id);
}
}
}