forked from mirrors/gecko-dev
138 lines
4.4 KiB
C++
138 lines
4.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim:set ts=2 sw=2 sts=2 et cindent: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "NetworkDataCountLayer.h"
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#include "nsSocketTransportService2.h"
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#include "prmem.h"
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#include "prio.h"
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namespace mozilla {
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namespace net {
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static PRDescIdentity sNetworkDataCountLayerIdentity;
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static PRIOMethods sNetworkDataCountLayerMethods;
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static PRIOMethods* sNetworkDataCountLayerMethodsPtr = nullptr;
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class NetworkDataCountSecret {
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public:
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NetworkDataCountSecret() = default;
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uint64_t mSentBytes = 0;
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uint64_t mReceivedBytes = 0;
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};
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static PRInt32 NetworkDataCountSend(PRFileDesc* fd, const void* buf,
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PRInt32 amount, PRIntn flags,
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PRIntervalTime timeout) {
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MOZ_RELEASE_ASSERT(fd->identity == sNetworkDataCountLayerIdentity);
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NetworkDataCountSecret* secret =
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reinterpret_cast<NetworkDataCountSecret*>(fd->secret);
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PRInt32 rv =
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(fd->lower->methods->send)(fd->lower, buf, amount, flags, timeout);
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if (rv > 0) {
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secret->mSentBytes += rv;
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}
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return rv;
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}
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static PRInt32 NetworkDataCountWrite(PRFileDesc* fd, const void* buf,
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PRInt32 amount) {
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return NetworkDataCountSend(fd, buf, amount, 0, PR_INTERVAL_NO_WAIT);
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}
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static PRInt32 NetworkDataCountRecv(PRFileDesc* fd, void* buf, PRInt32 amount,
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PRIntn flags, PRIntervalTime timeout) {
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MOZ_RELEASE_ASSERT(fd->identity == sNetworkDataCountLayerIdentity);
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NetworkDataCountSecret* secret =
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reinterpret_cast<NetworkDataCountSecret*>(fd->secret);
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PRInt32 rv =
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(fd->lower->methods->recv)(fd->lower, buf, amount, flags, timeout);
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if (rv > 0) {
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secret->mReceivedBytes += rv;
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}
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return rv;
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}
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static PRInt32 NetworkDataCountRead(PRFileDesc* fd, void* buf, PRInt32 amount) {
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return NetworkDataCountRecv(fd, buf, amount, 0, PR_INTERVAL_NO_WAIT);
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}
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static PRStatus NetworkDataCountClose(PRFileDesc* fd) {
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if (!fd) {
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return PR_FAILURE;
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}
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PRFileDesc* layer = PR_PopIOLayer(fd, PR_TOP_IO_LAYER);
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MOZ_RELEASE_ASSERT(layer && layer->identity == sNetworkDataCountLayerIdentity,
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"NetworkDataCount Layer not on top of stack");
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NetworkDataCountSecret* secret =
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reinterpret_cast<NetworkDataCountSecret*>(layer->secret);
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layer->secret = nullptr;
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layer->dtor(layer);
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delete secret;
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return fd->methods->close(fd);
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}
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nsresult AttachNetworkDataCountLayer(PRFileDesc* fd) {
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if (!sNetworkDataCountLayerMethodsPtr) {
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sNetworkDataCountLayerIdentity =
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PR_GetUniqueIdentity("NetworkDataCount Layer");
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sNetworkDataCountLayerMethods = *PR_GetDefaultIOMethods();
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sNetworkDataCountLayerMethods.send = NetworkDataCountSend;
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sNetworkDataCountLayerMethods.write = NetworkDataCountWrite;
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sNetworkDataCountLayerMethods.recv = NetworkDataCountRecv;
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sNetworkDataCountLayerMethods.read = NetworkDataCountRead;
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sNetworkDataCountLayerMethods.close = NetworkDataCountClose;
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sNetworkDataCountLayerMethodsPtr = &sNetworkDataCountLayerMethods;
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}
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PRFileDesc* layer = PR_CreateIOLayerStub(sNetworkDataCountLayerIdentity,
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sNetworkDataCountLayerMethodsPtr);
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if (!layer) {
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return NS_ERROR_FAILURE;
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}
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NetworkDataCountSecret* secret = new NetworkDataCountSecret();
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layer->secret = reinterpret_cast<PRFilePrivate*>(secret);
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PRStatus status = PR_PushIOLayer(fd, PR_NSPR_IO_LAYER, layer);
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if (status == PR_FAILURE) {
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delete secret;
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PR_Free(layer); // PR_CreateIOLayerStub() uses PR_Malloc().
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return NS_ERROR_FAILURE;
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}
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return NS_OK;
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}
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void NetworkDataCountSent(PRFileDesc* fd, uint64_t& sentBytes) {
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PRFileDesc* ndcFd = PR_GetIdentitiesLayer(fd, sNetworkDataCountLayerIdentity);
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MOZ_RELEASE_ASSERT(ndcFd);
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NetworkDataCountSecret* secret =
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reinterpret_cast<NetworkDataCountSecret*>(ndcFd->secret);
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sentBytes = secret->mSentBytes;
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}
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void NetworkDataCountReceived(PRFileDesc* fd, uint64_t& receivedBytes) {
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PRFileDesc* ndcFd = PR_GetIdentitiesLayer(fd, sNetworkDataCountLayerIdentity);
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MOZ_RELEASE_ASSERT(ndcFd);
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NetworkDataCountSecret* secret =
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reinterpret_cast<NetworkDataCountSecret*>(ndcFd->secret);
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receivedBytes = secret->mReceivedBytes;
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}
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} // namespace net
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} // namespace mozilla
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