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[idd] common: use CSRWLock throughout the drivers

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Make CSRWLock own the native lock and provide scoped guards for shared,
exclusive, early-unlock, and non-blocking use.

Replace direct SRW lock management throughout the IDD, input driver,
and helper while preserving the existing lock scopes.
This commit is contained in:
Geoffrey McRae
2026-08-11 22:06:31 +10:00
parent 2543366f5f
commit 61a49ebaba
37 changed files with 576 additions and 525 deletions
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53
idd/LGIddHelper/CPipeClient.cpp
View File

@@ -20,6 +20,7 @@
#include "CPipeClient.h"
#include "CDebug.h"
#include "CSRWLock.h"
#include "CNotifyWindow.h"
#include <setupapi.h>
@@ -323,10 +324,8 @@ bool CPipeClient::EnsureOnlyDisplayLocked()
bool CPipeClient::EnsureOnlyDisplay()
{
AcquireSRWLockExclusive(&m_displayLock);
const bool result = EnsureOnlyDisplayLocked();
ReleaseSRWLockExclusive(&m_displayLock);
return result;
CSRWExclusiveLock lock(m_displayLock);
return EnsureOnlyDisplayLocked();
}
bool CPipeClient::OnPipeMessage(const void * message, size_t size)
@@ -370,32 +369,32 @@ void CPipeClient::HandleSetCursorPos(const LGPipeMsg& msg)
void CPipeClient::HandleSetDisplayMode(const LGPipeMsg& msg)
{
AcquireSRWLockExclusive(&m_displayLock);
std::vector<DisplayState> displays;
size_t lgIndex;
if (!GetDisplayStates(displays, lgIndex))
LONG result;
{
ReleaseSRWLockExclusive(&m_displayLock);
DEBUG_ERROR("Looking Glass display not found while setting its mode");
return;
CSRWExclusiveLock lock(m_displayLock);
std::vector<DisplayState> displays;
size_t lgIndex;
if (!GetDisplayStates(displays, lgIndex))
{
DEBUG_ERROR("Looking Glass display not found while setting its mode");
return;
}
DEVMODE dm = displays[lgIndex].mode;
dm.dmPelsWidth = msg.displayMode.width;
dm.dmPelsHeight = msg.displayMode.height;
dm.dmDisplayFrequency =
(msg.displayMode.refreshMilliHz + 500) / 1000;
dm.dmFields =
DM_PELSWIDTH | DM_PELSHEIGHT | DM_DISPLAYFREQUENCY;
result = ChangeDisplaySettingsEx(displays[lgIndex].device.DeviceName,
&dm, NULL, CDS_UPDATEREGISTRY, NULL);
if (result != DISP_CHANGE_SUCCESSFUL)
DEBUG_ERROR("ChangeDisplaySettingsEx Failed (0x%08x)", result);
}
DEVMODE dm = displays[lgIndex].mode;
dm.dmPelsWidth = msg.displayMode.width;
dm.dmPelsHeight = msg.displayMode.height;
dm.dmDisplayFrequency =
(msg.displayMode.refreshMilliHz + 500) / 1000;
dm.dmFields =
DM_PELSWIDTH | DM_PELSHEIGHT | DM_DISPLAYFREQUENCY;
LONG result = ChangeDisplaySettingsEx(displays[lgIndex].device.DeviceName,
&dm, NULL, CDS_UPDATEREGISTRY, NULL);
if (result != DISP_CHANGE_SUCCESSFUL)
DEBUG_ERROR("ChangeDisplaySettingsEx Failed (0x%08x)", result);
ReleaseSRWLockExclusive(&m_displayLock);
if (result == DISP_CHANGE_SUCCESSFUL)
EnsureOnlyDisplay();
}

3
idd/LGIddHelper/CPipeClient.h
View File

@@ -24,13 +24,14 @@
#include <stdint.h>
#include "CPipeEndpoint.h"
#include "CSRWLock.h"
#include "PipeMsg.h"
class CPipeClient : private IPipeEndpointHandler
{
private:
CPipeEndpoint m_endpoint;
SRWLOCK m_displayLock = SRWLOCK_INIT;
CSRWLock m_displayLock;
void WriteMsg(const LGPipeMsg& msg);