static PRFileDesc *PopLayer(PRFileDesc *stack)
{
PRFileDesc *popped = PR_PopIOLayer(stack, identity);
if (verbosity > quiet)
PR_fprintf(logFile, "Popped layer(0x%x) from stack(0x%x)\n", popped, stack);
popped->dtor(popped);
return stack;
} /* PopLayer */
/*
** Default methods that just call down to the next fd.
*/
static PRStatus PR_CALLBACK pl_TopClose (PRFileDesc *fd)
{
PRFileDesc *top, *lower;
PRStatus rv;
PR_ASSERT(fd != NULL);
PR_ASSERT(fd->lower != NULL);
PR_ASSERT(fd->secret == NULL);
PR_ASSERT(fd->methods->file_type == PR_DESC_LAYERED);
if (PR_IO_LAYER_HEAD == fd->identity) {
/*
* new style stack; close all the layers, before deleting the
* stack head
*/
rv = fd->lower->methods->close(fd->lower);
_PR_DestroyIOLayer(fd);
return rv;
} else if ((fd->higher) && (PR_IO_LAYER_HEAD == fd->higher->identity)) {
/*
* lower layers of new style stack
*/
lower = fd->lower;
/*
* pop and cleanup current layer
*/
top = PR_PopIOLayer(fd->higher, PR_TOP_IO_LAYER);
top->dtor(top);
/*
* then call lower layer
*/
return (lower->methods->close(lower));
} else {
/* old style stack */
top = PR_PopIOLayer(fd, PR_TOP_IO_LAYER);
top->dtor(top);
return (fd->methods->close)(fd);
}
}
static PRStatus
TcpUdpPRCloseLayerClose(PRFileDesc *aFd)
{
if (!aFd) {
return PR_FAILURE;
}
PRFileDesc* layer = PR_PopIOLayer(aFd, PR_TOP_IO_LAYER);
MOZ_RELEASE_ASSERT(layer &&
layer->identity == sTcpUdpPRCloseLayerId,
"Closing Layer not on top of stack");
ClosingLayerSecret *closingLayerSecret =
reinterpret_cast<ClosingLayerSecret *>(layer->secret);
PRStatus status = PR_SUCCESS;
if (aFd) {
// If this is called during shutdown do not call ..method->close(fd) and
// let it leak.
if (gIOService->IsShutdown()) {
// If the ClosingService layer is the first layer above PR_NSPR_IO_LAYER
// we are not going to leak anything, but the PR_Close will not be called.
PR_Free(aFd);
} else if (closingLayerSecret->mClosingService) {
closingLayerSecret->mClosingService->PostRequest(aFd);
} else {
// Socket is created before closing service has been started or there was
// a problem with starting it.
PR_Close(aFd);
}
}
layer->secret = nullptr;
layer->dtor(layer);
delete closingLayerSecret;
return status;
}