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[host] detect header corruption and re-initialize if so

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This commit is contained in:
Geoffrey McRae 2021-12-30 13:49:33 +11:00
parent 764e52fb20
commit 9b202d5566
2 changed files with 120 additions and 87 deletions
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199
host/src/app.c
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@ -67,6 +67,7 @@ enum AppState
APP_STATE_RUNNING,
APP_STATE_IDLE,
APP_STATE_RESTART,
APP_STATE_REINIT,
APP_STATE_SHUTDOWN
};
@ -140,6 +141,15 @@ static bool lgmpTimer(void * opaque)
LGMP_STATUS status;
if ((status = lgmpHostProcess(app.lgmp)) != LGMP_OK)
{
// something has messed up the LGMP headers, etc, we need to reinit
if (status == LGMP_ERR_CORRUPTED)
{
DEBUG_ERROR("LGMP reported the shared memory has been corrrupted, "
"attempting to recover");
app.state = APP_STATE_REINIT;
return false;
}
DEBUG_ERROR("lgmpHostProcess Failed: %s", lgmpStatusString(status));
app.state = APP_STATE_SHUTDOWN;
return false;
@ -490,6 +500,100 @@ void capturePostPointerBuffer(CapturePointer pointer)
LG_UNLOCK(app.pointerLock);
}
static void lgmpShutdown()
{
if (app.lgmpTimer)
lgTimerDestroy(app.lgmpTimer);
for(int i = 0; i < LGMP_Q_FRAME_LEN; ++i)
lgmpHostMemFree(&app.frameMemory[i]);
for(int i = 0; i < LGMP_Q_POINTER_LEN; ++i)
lgmpHostMemFree(&app.pointerMemory[i]);
for(int i = 0; i < POINTER_SHAPE_BUFFERS; ++i)
lgmpHostMemFree(&app.pointerShapeMemory[i]);
lgmpHostFree(&app.lgmp);
}
static bool lgmpSetup(struct IVSHMEM * shmDev)
{
KVMFR udata =
{
.magic = KVMFR_MAGIC,
.version = KVMFR_VERSION,
.features = os_hasSetCursorPos() ? KVMFR_FEATURE_SETCURSORPOS : 0
};
strncpy(udata.hostver, BUILD_VERSION, sizeof(udata.hostver)-1);
LGMP_STATUS status;
if ((status = lgmpHostInit(shmDev->mem, shmDev->size, &app.lgmp,
sizeof(udata), (uint8_t *)&udata)) != LGMP_OK)
{
DEBUG_ERROR("lgmpHostInit Failed: %s", lgmpStatusString(status));
goto fail_init;
}
if ((status = lgmpHostQueueNew(app.lgmp, FRAME_QUEUE_CONFIG, &app.frameQueue)) != LGMP_OK)
{
DEBUG_ERROR("lgmpHostQueueCreate Failed (Frame): %s", lgmpStatusString(status));
goto fail_lgmp;
}
if ((status = lgmpHostQueueNew(app.lgmp, POINTER_QUEUE_CONFIG, &app.pointerQueue)) != LGMP_OK)
{
DEBUG_ERROR("lgmpHostQueueNew Failed (Pointer): %s", lgmpStatusString(status));
goto fail_lgmp;
}
for(int i = 0; i < LGMP_Q_POINTER_LEN; ++i)
{
if ((status = lgmpHostMemAlloc(app.lgmp, sizeof(KVMFRCursor), &app.pointerMemory[i])) != LGMP_OK)
{
DEBUG_ERROR("lgmpHostMemAlloc Failed (Pointer): %s", lgmpStatusString(status));
goto fail_lgmp;
}
memset(lgmpHostMemPtr(app.pointerMemory[i]), 0, sizeof(KVMFRCursor));
}
for(int i = 0; i < POINTER_SHAPE_BUFFERS; ++i)
{
if ((status = lgmpHostMemAlloc(app.lgmp, MAX_POINTER_SIZE, &app.pointerShapeMemory[i])) != LGMP_OK)
{
DEBUG_ERROR("lgmpHostMemAlloc Failed (Pointer Shapes): %s", lgmpStatusString(status));
goto fail_lgmp;
}
memset(lgmpHostMemPtr(app.pointerShapeMemory[i]), 0, MAX_POINTER_SIZE);
}
app.maxFrameSize = lgmpHostMemAvail(app.lgmp);
app.maxFrameSize = (app.maxFrameSize - (app.pageSize - 1)) & ~(app.pageSize - 1);
app.maxFrameSize /= LGMP_Q_FRAME_LEN;
DEBUG_INFO("Max Frame Size : %u MiB", (unsigned int)(app.maxFrameSize / 1048576LL));
for(int i = 0; i < LGMP_Q_FRAME_LEN; ++i)
{
if ((status = lgmpHostMemAllocAligned(app.lgmp, app.maxFrameSize,
app.pageSize, &app.frameMemory[i])) != LGMP_OK)
{
DEBUG_ERROR("lgmpHostMemAlloc Failed (Frame): %s", lgmpStatusString(status));
goto fail_lgmp;
}
}
if (!lgCreateTimer(10, lgmpTimer, NULL, &app.lgmpTimer))
{
DEBUG_ERROR("Failed to create the LGMP timer");
goto fail_lgmp;
}
return true;
fail_lgmp:
lgmpShutdown();
fail_init:
return false;
}
// this is called from the platform specific startup routine
int app_main(int argc, char * argv[])
{
@ -563,76 +667,14 @@ int app_main(int argc, char * argv[])
DEBUG_INFO("Max Pointer Size : %u KiB", (unsigned int)MAX_POINTER_SIZE / 1024);
DEBUG_INFO("KVMFR Version : %u", KVMFR_VERSION);
KVMFR udata = {
.magic = KVMFR_MAGIC,
.version = KVMFR_VERSION,
.features = os_hasSetCursorPos() ? KVMFR_FEATURE_SETCURSORPOS : 0
};
strncpy(udata.hostver, BUILD_VERSION, sizeof(udata.hostver)-1);
LGMP_STATUS status;
if ((status = lgmpHostInit(shmDev.mem, shmDev.size, &app.lgmp,
sizeof(udata), (uint8_t *)&udata)) != LGMP_OK)
{
DEBUG_ERROR("lgmpHostInit Failed: %s", lgmpStatusString(status));
exitcode = LG_HOST_EXIT_FATAL;
goto fail_ivshmem;
}
if ((status = lgmpHostQueueNew(app.lgmp, FRAME_QUEUE_CONFIG, &app.frameQueue)) != LGMP_OK)
{
DEBUG_ERROR("lgmpHostQueueCreate Failed (Frame): %s", lgmpStatusString(status));
exitcode = LG_HOST_EXIT_FATAL;
goto fail_lgmp;
}
if ((status = lgmpHostQueueNew(app.lgmp, POINTER_QUEUE_CONFIG, &app.pointerQueue)) != LGMP_OK)
{
DEBUG_ERROR("lgmpHostQueueNew Failed (Pointer): %s", lgmpStatusString(status));
exitcode = LG_HOST_EXIT_FATAL;
goto fail_lgmp;
}
for(int i = 0; i < LGMP_Q_POINTER_LEN; ++i)
{
if ((status = lgmpHostMemAlloc(app.lgmp, sizeof(KVMFRCursor), &app.pointerMemory[i])) != LGMP_OK)
{
DEBUG_ERROR("lgmpHostMemAlloc Failed (Pointer): %s", lgmpStatusString(status));
exitcode = LG_HOST_EXIT_FATAL;
goto fail_lgmp;
}
memset(lgmpHostMemPtr(app.pointerMemory[i]), 0, sizeof(KVMFRCursor));
}
for(int i = 0; i < POINTER_SHAPE_BUFFERS; ++i)
{
if ((status = lgmpHostMemAlloc(app.lgmp, MAX_POINTER_SIZE, &app.pointerShapeMemory[i])) != LGMP_OK)
{
DEBUG_ERROR("lgmpHostMemAlloc Failed (Pointer Shapes): %s", lgmpStatusString(status));
exitcode = LG_HOST_EXIT_FATAL;
goto fail_lgmp;
}
memset(lgmpHostMemPtr(app.pointerShapeMemory[i]), 0, MAX_POINTER_SIZE);
}
app.pageSize = sysinfo_getPageSize();
app.frameValid = false;
app.pointerShapeValid = false;
app.maxFrameSize = lgmpHostMemAvail(app.lgmp);
app.maxFrameSize = (app.maxFrameSize - (app.pageSize - 1)) & ~(app.pageSize - 1);
app.maxFrameSize /= LGMP_Q_FRAME_LEN;
DEBUG_INFO("Max Frame Size : %u MiB", (unsigned int)(app.maxFrameSize / 1048576LL));
for(int i = 0; i < LGMP_Q_FRAME_LEN; ++i)
if (!lgmpSetup(&shmDev))
{
if ((status = lgmpHostMemAllocAligned(app.lgmp, app.maxFrameSize,
app.pageSize, &app.frameMemory[i])) != LGMP_OK)
{
DEBUG_ERROR("lgmpHostMemAlloc Failed (Frame): %s", lgmpStatusString(status));
exitcode = LG_HOST_EXIT_FATAL;
goto fail_lgmp;
}
goto fail_ivshmem;
}
int throttleFps = option_get_int("app", "throttleFPS");
@ -681,14 +723,6 @@ int app_main(int argc, char * argv[])
LG_LOCK_INIT(app.pointerLock);
if (!lgCreateTimer(10, lgmpTimer, NULL, &app.lgmpTimer))
{
DEBUG_ERROR("Failed to create the LGMP timer");
iface->deinit();
goto fail_timer;
}
while(app.state != APP_STATE_SHUTDOWN)
{
if(lgmpHostQueueHasSubs(app.pointerQueue) ||
@ -716,7 +750,7 @@ int app_main(int argc, char * argv[])
lgmpHostQueueHasSubs(app.pointerQueue) ||
lgmpHostQueueHasSubs(app.frameQueue)))
{
if (app.state == APP_STATE_RESTART)
if (app.state == APP_STATE_RESTART || app.state == APP_STATE_REINIT)
{
if (!stopThreads())
{
@ -730,6 +764,13 @@ int app_main(int argc, char * argv[])
goto fail_capture;
}
if (app.state == APP_STATE_REINIT)
{
lgmpShutdown();
if (!lgmpSetup(&shmDev))
goto fail_lgmp;
}
if (!captureStart())
{
exitcode = LG_HOST_EXIT_FAILED;
@ -771,6 +812,7 @@ int app_main(int argc, char * argv[])
if (!iface->asyncCapture)
if (app.frameValid && lgmpHostQueueNewSubs(app.frameQueue) > 0)
{
LGMP_STATUS status;
if ((status = lgmpHostQueuePost(app.frameQueue, 0,
app.frameMemory[app.frameIndex])) != LGMP_OK)
DEBUG_ERROR("%s", lgmpStatusString(status));
@ -821,20 +863,11 @@ fail_threads:
captureStop();
fail_capture:
lgTimerDestroy(app.lgmpTimer);
fail_timer:
iface->free();
LG_LOCK_FREE(app.pointerLock);
fail_lgmp:
for(int i = 0; i < LGMP_Q_FRAME_LEN; ++i)
lgmpHostMemFree(&app.frameMemory[i]);
for(int i = 0; i < LGMP_Q_POINTER_LEN; ++i)
lgmpHostMemFree(&app.pointerMemory[i]);
for(int i = 0; i < POINTER_SHAPE_BUFFERS; ++i)
lgmpHostMemFree(&app.pointerShapeMemory[i]);
lgmpHostFree(&app.lgmp);
lgmpShutdown();
fail_ivshmem:
ivshmemClose(&shmDev);

2
repos/LGMP

@ -1 +1 @@
Subproject commit 7af3c0ec5ec1c273d09a2b0838e50362dcb4793b
Subproject commit 57e059ed6d4a4cfcd6e4de9e282330ba5f7632f4