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WindowServer: Support resizing windows.

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This is pretty limited and not entirely stable, but it does work! :^)
This commit is contained in:
Andreas Kling 2019-02-20 15:34:55 +01:00
parent a9911fca80
commit 59b8183c4b
11 changed files with 112 additions and 13 deletions
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9
Kernel/Process.cpp
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@ -2444,9 +2444,11 @@ void SharedBuffer::destroy_if_unused()
if (!m_pid1_retain_count && !m_pid2_retain_count) {
LOCKER(shared_buffers().lock());
#ifdef SHARED_BUFFER_DEBUG
dbgprintf("Destroying unused SharedBuffer{%p} (pid1: %d, pid2: %d)\n", this, m_pid1, m_pid2);
dbgprintf("Destroying unused SharedBuffer{%p} id: %d (pid1: %d, pid2: %d)\n", this, m_shared_buffer_id, m_pid1, m_pid2);
#endif
size_t count_before = shared_buffers().resource().size();
shared_buffers().resource().remove(m_shared_buffer_id);
ASSERT(count_before != shared_buffers().resource().size());
}
}
@ -2473,6 +2475,7 @@ int Process::sys$create_shared_buffer(pid_t peer_pid, size_t size, void** buffer
LOCKER(shared_buffers().lock());
int shared_buffer_id = ++s_next_shared_buffer_id;
auto shared_buffer = make<SharedBuffer>(m_pid, peer_pid, size);
shared_buffer->m_shared_buffer_id = shared_buffer_id;
shared_buffer->m_pid1_region = allocate_region_with_vmo(LinearAddress(), shared_buffer->size(), shared_buffer->m_vmo.copy_ref(), 0, "SharedBuffer", true, true);
shared_buffer->m_pid1_region->set_shared(true);
*buffer = shared_buffer->m_pid1_region->laddr().as_ptr();
@ -2491,7 +2494,7 @@ int Process::sys$release_shared_buffer(int shared_buffer_id)
return -EINVAL;
auto& shared_buffer = *(*it).value;
#ifdef SHARED_BUFFER_DEBUG
dbgprintf("%s(%u): Releasing shared buffer %d\n", name().characters(), pid(), shared_buffer_id);
dbgprintf("%s(%u): Releasing shared buffer %d, buffer count: %u\n", name().characters(), pid(), shared_buffer_id, shared_buffers().resource().size());
#endif
shared_buffer.release(*this);
return 0;
@ -2507,7 +2510,7 @@ void* Process::sys$get_shared_buffer(int shared_buffer_id)
if (shared_buffer.pid1() != m_pid && shared_buffer.pid2() != m_pid)
return (void*)-EINVAL;
#ifdef SHARED_BUFFER_DEBUG
dbgprintf("%s(%u): Retaining shared buffer %d\n", name().characters(), pid(), shared_buffer_id);
dbgprintf("%s(%u): Retaining shared buffer %d, buffer count: %u\n", name().characters(), pid(), shared_buffer_id, shared_buffers().resource().size());
#endif
return shared_buffer.retain(*this);
}