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use a timer for the LGMP host instead of a thread

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This commit is contained in:
Geoffrey McRae
2020-04-24 20:34:58 +10:00
parent e7f088ef52
commit fdb9a9cca8
8 changed files with 111 additions and 28 deletions
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39
c-host/src/app.c
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@@ -28,6 +28,7 @@ Place, Suite 330, Boston, MA 02111-1307 USA
#include "common/thread.h"
#include "common/ivshmem.h"
#include "common/sysinfo.h"
#include "common/time.h"
#include <lgmp/host.h>
@@ -47,14 +48,14 @@ static const struct LGMPQueueConfig FRAME_QUEUE_CONFIG =
{
.queueID = LGMP_Q_FRAME,
.numMessages = LGMP_Q_FRAME_LEN,
.subTimeout = 10000
.subTimeout = 1000
};
static const struct LGMPQueueConfig POINTER_QUEUE_CONFIG =
{
.queueID = LGMP_Q_POINTER,
.numMessages = LGMP_Q_POINTER_LEN,
.subTimeout = 10000
.subTimeout = 1000
};
#define MAX_POINTER_SIZE (sizeof(KVMFRCursor) + (128 * 128 * 4))
@@ -78,32 +79,23 @@ struct app
bool running;
bool reinit;
LGThread * lgmpThread;
LGTimer * lgmpTimer;
LGThread * frameThread;
};
static struct app app;
static int lgmpThread(void * opaque)
static bool lgmpTimer(void * opaque)
{
LGMP_STATUS status;
while(app.running)
if ((status = lgmpHostProcess(app.lgmp)) != LGMP_OK)
{
if ((status = lgmpHostProcess(app.lgmp)) != LGMP_OK)
{
DEBUG_ERROR("lgmpHostProcess Failed: %s", lgmpStatusString(status));
break;
}
/*
* do not decrease this value too far, see:
* https://lists.gnu.org/archive/html/qemu-devel/2020-01/msg06331.html
*/
usleep(100 * 1000);
DEBUG_ERROR("lgmpHostProcess Failed: %s", lgmpStatusString(status));
app.running = false;
return false;
}
app.running = false;
return 0;
return true;
}
static int frameThread(void * opaque)
@@ -210,9 +202,9 @@ static int frameThread(void * opaque)
bool startThreads()
{
app.running = true;
if (!lgCreateThread("LGMPThread", lgmpThread, NULL, &app.lgmpThread))
if (!lgCreateTimer(100, lgmpTimer, NULL, &app.lgmpTimer))
{
DEBUG_ERROR("Failed to create the LGMP thread");
DEBUG_ERROR("Failed to create the LGMP timer");
return false;
}
@@ -239,12 +231,11 @@ bool stopThreads()
}
app.frameThread = NULL;
if (app.lgmpThread && !lgJoinThread(app.lgmpThread, NULL))
if (app.lgmpTimer)
{
DEBUG_WARN("Failed to join the LGMP thread");
ok = false;
lgTimerDestroy(app.lgmpTimer);
app.lgmpTimer = NULL;
}
app.lgmpThread = NULL;
return ok;
}