t_uint64 ReadQ (t_uint64 va)
{
t_uint64 pa;
if (va & 7) ABORT1 (va, EXC_ALIGN); /* must be Q aligned */
if (dmapen) pa = trans_d (va, cm_racc); /* mapping on? */
else pa = va;
return ReadPQ (pa);
}
t_uint64 ReadAccL (t_uint64 va, uint32 acc)
{
t_uint64 pa;
if (va & 3) ABORT1 (va, EXC_ALIGN); /* must be L aligned */
if (dmapen) pa = trans_d (va, acc); /* mapping on? */
else pa = va;
return ReadPL (pa);
}
void WriteAccQ (t_uint64 va, t_uint64 dat, uint32 acc)
{
t_uint64 pa;
if (va & 7) ABORT1 (va, EXC_ALIGN); /* must be Q aligned */
if (dmapen) pa = trans_d (va, acc); /* mapping on? */
else pa = va;
WritePQ (pa, dat);
return;
}
void WriteL (t_uint64 va, t_uint64 dat)
{
t_uint64 pa;
if (va & 3) ABORT1 (va, EXC_ALIGN); /* must be L aligned */
if (dmapen) pa = trans_d (va, cm_wacc); /* mapping on? */
else pa = va;
WritePL (pa, dat);
return;
}
NS_METHOD nsTableCellFrame::Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
DO_GLOBAL_REFLOW_COUNT("nsTableCellFrame", aReflowState.reason);
DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
#if defined DEBUG_TABLE_REFLOW_TIMING
nsTableFrame::DebugReflow(this, (nsHTMLReflowState&)aReflowState);
#endif
float p2t = aPresContext->ScaledPixelsToTwips();
// work around pixel rounding errors, round down to ensure we don't exceed the avail height in
nscoord availHeight = aReflowState.availableHeight;
if (NS_UNCONSTRAINEDSIZE != availHeight) {
availHeight = nsTableFrame::RoundToPixel(availHeight, p2t, eAlwaysRoundDown);
}
nsresult rv = NS_OK;
// see if a special height reflow needs to occur due to having a pct height
if (!NeedSpecialReflow())
nsTableFrame::CheckRequestSpecialHeightReflow(aReflowState);
// this should probably be cached somewhere
nsCompatibility compatMode = aPresContext->CompatibilityMode();
// Initialize out parameter
if (aDesiredSize.mComputeMEW) {
aDesiredSize.mMaxElementWidth = 0;
}
aStatus = NS_FRAME_COMPLETE;
nsSize availSize(aReflowState.availableWidth, availHeight);
PRBool noBorderBeforeReflow = GetContentEmpty() &&
GetStyleTableBorder()->mEmptyCells != NS_STYLE_TABLE_EMPTY_CELLS_SHOW;
/* XXX: remove tableFrame when border-collapse inherits */
nsTableFrame* tableFrame = nsnull;
rv = nsTableFrame::GetTableFrame(this, tableFrame); if (!tableFrame) ABORT1(NS_ERROR_NULL_POINTER);
nsMargin borderPadding = aReflowState.mComputedPadding;
nsMargin border;
GetBorderWidth(p2t, border);
if ((NS_UNCONSTRAINEDSIZE == availSize.width) || !noBorderBeforeReflow) {
borderPadding += border;
}
nscoord topInset = borderPadding.top;
nscoord rightInset = borderPadding.right;
nscoord bottomInset = borderPadding.bottom;
nscoord leftInset = borderPadding.left;
// reduce available space by insets, if we're in a constrained situation
if (NS_UNCONSTRAINEDSIZE!=availSize.width)
availSize.width -= leftInset+rightInset;
if (NS_UNCONSTRAINEDSIZE!=availSize.height)
availSize.height -= topInset+bottomInset;
PRBool isStyleChanged = PR_FALSE;
if (eReflowReason_Incremental == aReflowState.reason) {
// if the path has a reflow command then the cell must be the target of a style change
nsHTMLReflowCommand* command = aReflowState.path->mReflowCommand;
if (command) {
// if there are other reflow commands targeted at the cell's block, these will
// be subsumed by the style change reflow
nsReflowType type;
command->GetType(type);
if (eReflowType_StyleChanged == type) {
isStyleChanged = PR_TRUE;
}
else NS_ASSERTION(PR_FALSE, "table cell target of illegal incremental reflow type");
}
// else the reflow command will be passed down to the child
}
// Try to reflow the child into the available space. It might not
// fit or might need continuing.
if (availSize.height < 0)
availSize.height = 1;
nsHTMLReflowMetrics kidSize(NS_UNCONSTRAINEDSIZE == aReflowState.availableWidth ||
aDesiredSize.mComputeMEW,
aDesiredSize.mFlags);
kidSize.width=kidSize.height=kidSize.ascent=kidSize.descent=0;
SetPriorAvailWidth(aReflowState.availableWidth);
nsIFrame* firstKid = mFrames.FirstChild();
NS_ASSERTION(firstKid, "Frame construction error, a table cell always has an inner cell frame");
nscoord computedPaginatedHeight = 0;
if (aReflowState.mFlags.mSpecialHeightReflow ||
(HadSpecialReflow() && (eReflowReason_Incremental == aReflowState.reason))) {
((nsHTMLReflowState&)aReflowState).mComputedHeight = mRect.height - topInset - bottomInset;
DISPLAY_REFLOW_CHANGE();
}
else if (aPresContext->IsPaginated()) {
computedPaginatedHeight = CalcUnpaginagedHeight(aPresContext, (nsTableCellFrame&)*this, *tableFrame, topInset + bottomInset);
if (computedPaginatedHeight > 0) {
((nsHTMLReflowState&)aReflowState).mComputedHeight = computedPaginatedHeight;
DISPLAY_REFLOW_CHANGE();
}
}
else {
SetHasPctOverHeight(PR_FALSE);
}
// If it was a style change targeted at us, then reflow the child with a style change reason
nsReflowReason reason = aReflowState.reason;
if (isStyleChanged) {
reason = eReflowReason_StyleChange;
// the following could be optimized with a fair amount of effort
tableFrame->SetNeedStrategyInit(PR_TRUE);
}
nsHTMLReflowState kidReflowState(aPresContext, aReflowState, firstKid, availSize, reason);
// mIPercentHeightObserver is for non table related frames inside cells in quirks mode
kidReflowState.mPercentHeightObserver = (eCompatibility_NavQuirks == compatMode) ? (nsIPercentHeightObserver *)this : nsnull;
// Assume the inner child will stay positioned exactly where it is. Later in
// VerticallyAlignChild() we'll move it if it turns out to be wrong. This
// avoids excessive movement and is more stable
nsPoint kidOrigin;
if (isStyleChanged ||
(eReflowReason_Initial == aReflowState.reason) ||
(eReflowReason_StyleChange == aReflowState.reason)) {
kidOrigin.MoveTo(leftInset, topInset);
} else {
// handle percent padding-left which was 0 during initial reflow
if (eStyleUnit_Percent == aReflowState.mStylePadding->mPadding.GetLeftUnit()) {
nsRect kidRect = firstKid->GetRect();
// only move in the x direction for the same reason as above
kidOrigin.MoveTo(leftInset, kidRect.y);
firstKid->SetPosition(nsPoint(leftInset, kidRect.y));
}
kidOrigin = firstKid->GetPosition();
}
#if defined DEBUG_TABLE_REFLOW_TIMING
nsTableFrame::DebugReflow(firstKid, (nsHTMLReflowState&)kidReflowState);
#endif
nscoord priorBlockHeight = GetLastBlockHeight();
ReflowChild(firstKid, aPresContext, kidSize, kidReflowState,
kidOrigin.x, kidOrigin.y, 0, aStatus);
SetLastBlockHeight(kidSize.height);
if (isStyleChanged) {
Invalidate(GetOverflowRect(), PR_FALSE);
}
#if defined DEBUG_TABLE_REFLOW_TIMING
nsTableFrame::DebugReflow(firstKid, (nsHTMLReflowState&)kidReflowState, &kidSize, aStatus);
#endif
#ifdef NS_DEBUG
DebugCheckChildSize(firstKid, kidSize, availSize, (NS_UNCONSTRAINEDSIZE != aReflowState.availableWidth));
#endif
// 0 dimensioned cells need to be treated specially in Standard/NavQuirks mode
// see testcase "emptyCells.html"
if ((0 == kidSize.width) || (0 == kidSize.height)) { // XXX why was this &&
SetContentEmpty(PR_TRUE);
if (NS_UNCONSTRAINEDSIZE == kidReflowState.availableWidth &&
GetStyleTableBorder()->mEmptyCells != NS_STYLE_TABLE_EMPTY_CELLS_SHOW) {
// need to reduce the insets by border if the cell is empty
leftInset -= border.left;
rightInset -= border.right;
topInset -= border.top;
bottomInset -= border.bottom;
}
}
else {
SetContentEmpty(PR_FALSE);
if ((eReflowReason_Incremental == aReflowState.reason) && noBorderBeforeReflow) {
// need to consider borders, since they were factored out above
leftInset += border.left;
rightInset += border.right;
topInset += border.top;
bottomInset += border.bottom;
kidOrigin.MoveTo(leftInset, topInset);
}
}
const nsStylePosition* pos = GetStylePosition();
// calculate the min cell width
nscoord onePixel = NSIntPixelsToTwips(1, p2t);
nscoord smallestMinWidth = 0;
if (eCompatibility_NavQuirks == compatMode) {
if ((pos->mWidth.GetUnit() != eStyleUnit_Coord) &&
(pos->mWidth.GetUnit() != eStyleUnit_Percent)) {
if (PR_TRUE == GetContentEmpty()) {
if (border.left > 0)
smallestMinWidth += onePixel;
if (border.right > 0)
smallestMinWidth += onePixel;
}
}
}
PRInt32 colspan = tableFrame->GetEffectiveColSpan(*this);
if (colspan > 1) {
smallestMinWidth = PR_MAX(smallestMinWidth, colspan * onePixel);
nscoord spacingX = tableFrame->GetCellSpacingX();
nscoord spacingExtra = spacingX * (colspan - 1);
smallestMinWidth += spacingExtra;
if (aReflowState.mComputedPadding.left > 0) {
smallestMinWidth -= onePixel;
}
}
if ((0 == kidSize.width) && (NS_UNCONSTRAINEDSIZE != kidReflowState.availableWidth)) {
// empty content has to be forced to the assigned width for resize or incremental reflow
kidSize.width = kidReflowState.availableWidth;
}
if (0 == kidSize.height) {
if ((pos->mHeight.GetUnit() != eStyleUnit_Coord) &&
(pos->mHeight.GetUnit() != eStyleUnit_Percent)) {
PRInt32 pixHeight = (eCompatibility_NavQuirks == compatMode) ? 1 : 0;
kidSize.height = NSIntPixelsToTwips(pixHeight, p2t);
}
}
// end 0 dimensioned cells
kidSize.width = PR_MAX(kidSize.width, smallestMinWidth);
if (!tableFrame->IsAutoLayout()) {
// a cell in a fixed layout table is constrained to the avail width
// if we need to shorten the cell the previous non overflowing block
// will get some overflow area
if (kidSize.width > availSize.width) {
kidSize.width = availSize.width;
firstKid->FinishAndStoreOverflow(&kidSize);
}
}
//if (eReflowReason_Resize == aReflowState.reason) {
// NS_ASSERTION(kidSize.width <= availSize.width, "child needed more space during resize reflow");
//}
// Place the child
FinishReflowChild(firstKid, aPresContext, &kidReflowState, kidSize,
kidOrigin.x, kidOrigin.y, 0);
// first, compute the height which can be set w/o being restricted by aMaxSize.height
nscoord cellHeight = kidSize.height;
if (NS_UNCONSTRAINEDSIZE != cellHeight) {
cellHeight += topInset + bottomInset;
// work around block rounding errors, round down to ensure we don't exceed the avail height in
nsPixelRound roundMethod = (NS_UNCONSTRAINEDSIZE == availHeight) ? eAlwaysRoundUp : eAlwaysRoundDown;
cellHeight = nsTableFrame::RoundToPixel(cellHeight, p2t, roundMethod);
}
// next determine the cell's width
nscoord cellWidth = kidSize.width; // at this point, we've factored in the cell's style attributes
// factor in border and padding
if (NS_UNCONSTRAINEDSIZE != cellWidth) {
cellWidth += leftInset + rightInset;
}
cellWidth = nsTableFrame::RoundToPixel(cellWidth, p2t); // work around block rounding errors
// set the cell's desired size and max element size
aDesiredSize.width = cellWidth;
aDesiredSize.height = cellHeight;
aDesiredSize.ascent = topInset;
aDesiredSize.descent = bottomInset;
aDesiredSize.ascent += kidSize.ascent;
aDesiredSize.descent += kidSize.descent;
// the overflow area will be computed when the child will be vertically aligned
if (aDesiredSize.mComputeMEW) {
aDesiredSize.mMaxElementWidth =
PR_MAX(smallestMinWidth, kidSize.mMaxElementWidth);
if (NS_UNCONSTRAINEDSIZE != aDesiredSize.mMaxElementWidth) {
aDesiredSize.mMaxElementWidth = nsTableFrame::RoundToPixel(
aDesiredSize.mMaxElementWidth + leftInset + rightInset, p2t);
}
}
if (aDesiredSize.mFlags & NS_REFLOW_CALC_MAX_WIDTH) {
aDesiredSize.mMaximumWidth = kidSize.mMaximumWidth;
if (NS_UNCONSTRAINEDSIZE != aDesiredSize.mMaximumWidth) {
aDesiredSize.mMaximumWidth += leftInset + rightInset;
aDesiredSize.mMaximumWidth = nsTableFrame::RoundToPixel(aDesiredSize.mMaximumWidth, p2t);
}
// make sure the preferred width is at least as big as the max element width
if (aDesiredSize.mComputeMEW) {
aDesiredSize.mMaximumWidth = PR_MAX(aDesiredSize.mMaximumWidth, aDesiredSize.mMaxElementWidth);
}
}
if (aReflowState.mFlags.mSpecialHeightReflow) {
if (aDesiredSize.height > mRect.height) {
// set a bit indicating that the pct height contents exceeded
// the height that they could honor in the pass 2 reflow
SetHasPctOverHeight(PR_TRUE);
}
if (NS_UNCONSTRAINEDSIZE == aReflowState.availableHeight) {
aDesiredSize.height = mRect.height;
}
SetNeedSpecialReflow(PR_FALSE);
SetHadSpecialReflow(PR_TRUE);
}
else if (HadSpecialReflow()) {
if (eReflowReason_Incremental == aReflowState.reason) {
// with an unconstrained height, if the block height value hasn't changed,
// use the last height of the cell.
if ((NS_UNCONSTRAINEDSIZE == aReflowState.availableHeight) &&
(GetLastBlockHeight() == priorBlockHeight)) {
aDesiredSize.height = mRect.height;
}
}
// XXX should probably call SetHadSpecialReflow(PR_FALSE) when things change so that
// nothing inside the cell has a percent height, but it is not easy determining this
}
// remember the desired size for this reflow
SetDesiredSize(aDesiredSize);
#if defined DEBUG_TABLE_REFLOW_TIMING
nsTableFrame::DebugReflow(this, (nsHTMLReflowState&)aReflowState, &aDesiredSize, aStatus);
#endif
if (NS_UNCONSTRAINEDSIZE == aReflowState.availableWidth) {
SetNeedPass2Reflow(PR_TRUE);
}
else if ((eReflowReason_Initial == aReflowState.reason) ||
(eReflowReason_Resize == aReflowState.reason)) {
SetNeedPass2Reflow(PR_FALSE);
}
NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize);
return NS_OK;
}
int
main(int argc,
char *argv[]) {
char address[MAX_MACHINE_NAME + 1];
IPAddress addresses[MAX_ADDRESSES];
unsigned int addressesCount;
char addressList[255 + 1];
const char *c;
char errorFile[127 + 1];
char logFile[127 + 1];
struct host_desc memoryDesc;
double nextBeatTime;
struct host_desc nsDesc;
double now;
int opt;
extern char *optarg;
char password[127 + 1];
const char *USAGE =
"nws_memory [-D] [-a name] [-d dir] [-el file] [-N host] [-p port] [-s size]";
/* Set up default values that will be overwritten by command line args. */
addressList[0] = '\0';
errorFile[0] = '\0';
fileSize = atoi(GetEnvironmentValue("MEMORY_SIZE",
"~", ".nwsrc", DEFAULT_MEMORY_SIZE));
journalFileSize = atoi(GetEnvironmentValue("JOURNAL_SIZE",
"~", ".nwsrc", DEFAULT_JOURNAL_SIZE));
logFile[0] = '\0';
HostDValue(MyMachineName(), DefaultHostPort(MEMORY_HOST), &memoryDesc);
SAFESTRCPY(memoryDir,
GetEnvironmentValue("MEMORY_DIR", "~", ".nwsrc",
DEFAULT_MEMORY_DIR));;
SAFESTRCPY(nsDesc.host_name,
GetEnvironmentValue("NAME_SERVER", "~", ".nwsrc", "noname"));
HostDValue(nsDesc.host_name, DefaultHostPort(NAME_SERVER_HOST), &nsDesc);
password[0] = '\0';
memLogLocation.loc_type = MEMORY_LOG_LOCAL;
debug = 0;
while((int)(opt = getopt(argc, argv, SWITCHES)) != EOF) {
switch(opt) {
case 'a':
SAFESTRCPY(addressList, optarg);
break;
case 'D':
debug = 1;
break;
case 'd':
SAFESTRCPY(memoryDir, optarg);
break;
case 'e':
SAFESTRCPY(errorFile, optarg);
break;
case 'l':
SAFESTRCPY(logFile, optarg);
break;
case 'N':
HostDValue(optarg, DefaultHostPort(NAME_SERVER_HOST), &nsDesc);
break;
case 'p':
memoryDesc.port = atoi(optarg);
break;
case 'P':
fprintf(stdout, "Password? ");
fscanf(stdin, "%s", password);
break;
case 's':
fileSize = atoi(optarg);
break;
case 'j':
journalFileSize = atoi(optarg);
break;
#if defined(ENABLE_CACHE)
case 'C':
RC_entries = atoi(optarg);
break;
#endif
default:
fprintf(stderr, "nws_memory: unrecognized switch\n%s\n", USAGE);
exit(1);
break;
}
}
#if defined(ENABLE_CACHE)
/*
* WARNING: these two had better be the same or the cache and backing
* store could be inconsistent
*/
RCMemorySize = fileSize;
/*
* make sure entries value is sane
*/
if(RC_entries <= 0)
RC_entries = 0;
#endif
if (debug) {
DirectDiagnostics(DIAGINFO, stdout);
DirectDiagnostics(DIAGLOG, stdout);
DirectDiagnostics(DIAGWARN, stderr);
DirectDiagnostics(DIAGERROR, stderr);
DirectDiagnostics(DIAGFATAL, stderr);
}
for(addressesCount = 0, c = addressList;
GETTOK(address, c, ",", &c);
addressesCount++) {
if(!IPAddressValue(address, &addresses[addressesCount])) {
ABORT1("Unable to convert '%s' into an IP address\n", address);
}
}
addressesCount += IPAddressValues(memoryDesc.host_name,
&addresses[addressesCount],
MAX_ADDRESSES - addressesCount);
if(memoryDir[strlen(memoryDir) - 1] != '/') {
strcat(memoryDir, "/");
}
if(!MakeDirectory(memoryDir, 0775, 1)) {
ABORT1("Unable to establish %s as state directory\n", memoryDir);
}
SAFESTRCPY(memLogLocation.path,memoryDir);
if(!EstablishHost(NameOfHost(&memoryDesc),
MEMORY_HOST,
addresses,
addressesCount,
memoryDesc.port,
errorFile,
logFile,
password,
&nsDesc,
NULL)) {
exit(1);
}
vstrncpy(journalPath, sizeof(journalPath), 4,
memoryDir, EstablishedRegistration(), ".", JOURNAL);
fclose(stdin);
signal(SIGPIPE, SocketFailure);
RegisterListener(STORE_STATE, "STORE_STATE", &ProcessRequest);
RegisterListener(FETCH_STATE, "FETCH_STATE", &ProcessRequest);
RegisterListener(AUTOFETCH_BEGIN, "AUTOFETCH_BEGIN", &ProcessRequest);
RegisterListener(MEMORY_CLEAN, "MEMORY_CLEAN", &ProcessRequest);
#ifdef WITH_NETLOGGER
RegisterListener(MEMORY_LOGDEST, "MEMORY_LOGDEST", &ProcessRequest);
#endif
NotifyOnDisconnection(&EndAutoFetch);
nextBeatTime = CurrentTime();
/* main service loop */
while(1) {
now = CurrentTime();
if(now >= nextBeatTime) {
RegisterHost(DEFAULT_HOST_BEAT * 2);
nextBeatTime =
now + (HostHealthy() ? DEFAULT_HOST_BEAT : SHORT_HOST_BEAT);
}
ListenForMessages(nextBeatTime - now);
}
/* return(0); Never reached */
}
int
main(int argc,
char *argv[]) {
char address[MAX_MACHINE_NAME + 1];
IPAddress addresses[MAX_ADDRESSES];
unsigned int addressesCount;
char addressList[255 + 1];
const char *c;
unsigned long compressionFreq;
char errorFile[127 + 1];
char logFile[127 + 1];
unsigned long nextCompression;
struct host_desc nsDesc;
char password[127 + 1];
int opt;
extern char *optarg;
char registrationFileName[255 + 1];
const char *USAGE =
"nws_nameserver [-D] [-a name] [-c seconds] [-efl file] [-p port]";
/* Set up default values that will be overwritten by command line args. */
addressList[0] = '\0';
compressionFreq = DEFAULT_COMPRESSION_FREQUENCY;
errorFile[0] = '\0';
logFile[0] = '\0';
HostDValue(MyMachineName(), DefaultHostPort(NAME_SERVER_HOST), &nsDesc);
SAFESTRCPY(registrationFileName, DEFAULT_FILE);
password[0] = '\0';
debug = 0;
while((int)(opt = getopt(argc, argv, SWITCHES)) != EOF) {
switch(opt) {
case 'a':
SAFESTRCPY(addressList, optarg);
break;
case 'c':
compressionFreq = atol(optarg);
break;
case 'D':
debug = 1;
break;
case 'e':
SAFESTRCPY(errorFile, optarg);
break;
case 'f':
SAFESTRCPY(registrationFileName, optarg);
break;
case 'l':
SAFESTRCPY(logFile, optarg);
break;
case 'p':
nsDesc.port = atoi(optarg);
break;
case 'P':
fprintf(stdout, "Password? ");
fscanf(stdin, "%s", password);
break;
default:
fprintf(stderr, "nws_nameserver: unrecognized switch\n%s\n", USAGE);
exit(1);
break;
}
}
if (debug) {
DirectDiagnostics(DIAGINFO, stdout);
DirectDiagnostics(DIAGLOG, stdout);
DirectDiagnostics(DIAGWARN, stderr);
DirectDiagnostics(DIAGERROR, stderr);
DirectDiagnostics(DIAGFATAL, stderr);
}
addressesCount = IPAddressValues(nsDesc.host_name, addresses, MAX_ADDRESSES);
for(c = addressList; GETTOK(address, c, ",", &c); ) {
if(!IPAddressValue(address, &addresses[addressesCount++])) {
ABORT1("Unable to convert '%s' into an IP address\n", address);
}
}
registrationFile = fopen(registrationFileName, "r+");
if(registrationFile == NULL) {
registrationFile = fopen(registrationFileName, "w+");
}
if(registrationFile == NULL) {
ABORT1("Unable to open %s for storing registrations\n",
registrationFileName);
}
if(!EstablishHost(NameOfHost(&nsDesc),
NAME_SERVER_HOST,
addresses,
addressesCount,
nsDesc.port,
errorFile,
logFile,
password,
&nsDesc,
&NSExit)) {
exit(1);
}
fclose(stdin);
signal(SIGPIPE, SocketFailure);
RegisterListener(NS_REGISTER, "NS_REGISTER", &ProcessRequest);
RegisterListener(NS_SEARCH, "NS_SEARCH", &ProcessRequest);
RegisterListener(NS_UNREGISTER, "NS_UNREGISTER", &ProcessRequest);
nextCompression = CurrentTime() + compressionFreq;
/* main service loop */
while(1) {
ListenForMessages(nextCompression - CurrentTime());
if(CurrentTime() > nextCompression) {
CompressRegistrations();
nextCompression = CurrentTime() + compressionFreq;
}
}
/* return 0; Never reached */
}