Esempi in C++ (Cpp) per virStreamEventUpdateCallback

Esempio n. 1

File: console.c Progetto: mohankku/libvirt

static void
virConsoleEventOnStdin(int watch ATTRIBUTE_UNUSED,
                       int fd ATTRIBUTE_UNUSED,
                       int events,
                       void *opaque)
{
    virConsolePtr con = opaque;

    if (events & VIR_EVENT_HANDLE_READABLE) {
        size_t avail = con->terminalToStream.length -
            con->terminalToStream.offset;
        int got;

        if (avail < 1024) {
            if (VIR_REALLOC_N(con->terminalToStream.data,
                              con->terminalToStream.length + 1024) < 0) {
                virReportOOMError();
                virConsoleShutdown(con);
                return;
            }
            con->terminalToStream.length += 1024;
            avail += 1024;
        }

        got = read(fd,
                   con->terminalToStream.data +
                   con->terminalToStream.offset,
                   avail);
        if (got < 0) {
            if (errno != EAGAIN) {
                virConsoleShutdown(con);
            }
            return;
        }
        if (got == 0) {
            virConsoleShutdown(con);
            return;
        }
        if (con->terminalToStream.data[con->terminalToStream.offset] == con->escapeChar) {
            virConsoleShutdown(con);
            return;
        }

        con->terminalToStream.offset += got;
        if (con->terminalToStream.offset)
            virStreamEventUpdateCallback(con->st,
                                         VIR_STREAM_EVENT_READABLE |
                                         VIR_STREAM_EVENT_WRITABLE);
    }

    if (events & VIR_EVENT_HANDLE_ERROR ||
        events & VIR_EVENT_HANDLE_HANGUP) {
        virConsoleShutdown(con);
    }
}

Esempio n. 2

File: stream.c Progetto: miurahr/libvirt

static void
daemonStreamUpdateEvents(daemonClientStream *stream)
{
    int newEvents = 0;
    if (stream->rx)
        newEvents |= VIR_STREAM_EVENT_WRITABLE;
    if (stream->tx && !stream->recvEOF)
        newEvents |= VIR_STREAM_EVENT_READABLE;

    virStreamEventUpdateCallback(stream->st, newEvents);
}

Esempio n. 3

File: stream.c Progetto: hw-claudio/libvirt

static void
remoteStreamUpdateEvents(struct qemud_client_stream *stream)
{
    int newEvents = 0;
    if (stream->rx)
        newEvents |= VIR_STREAM_EVENT_WRITABLE;
    if (stream->tx && !stream->recvEOF)
        newEvents |= VIR_STREAM_EVENT_READABLE;

    virStreamEventUpdateCallback(stream->st, newEvents);
}

Esempio n. 4

File: virsh-console.c Progetto: libvirt/libvirt

static void
virConsoleEventOnStdin(int watch ATTRIBUTE_UNUSED,
                       int fd ATTRIBUTE_UNUSED,
                       int events,
                       void *opaque)
{
    virConsolePtr con = opaque;

    virObjectLock(con);

    /* we got late event after console was shutdown */
    if (!con->st)
        goto cleanup;

    if (events & VIR_EVENT_HANDLE_READABLE) {
        size_t avail = con->terminalToStream.length -
            con->terminalToStream.offset;
        int got;

        if (avail < 1024) {
            if (VIR_REALLOC_N(con->terminalToStream.data,
                              con->terminalToStream.length + 1024) < 0) {
                virConsoleShutdown(con);
                goto cleanup;
            }
            con->terminalToStream.length += 1024;
            avail += 1024;
        }

        got = read(fd,
                   con->terminalToStream.data +
                   con->terminalToStream.offset,
                   avail);
        if (got < 0) {
            if (errno != EAGAIN) {
                virReportSystemError(errno, "%s", _("cannot read from stdin"));
                virConsoleShutdown(con);
            }
            goto cleanup;
        }
        if (got == 0) {
            virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("EOF on stdin"));
            virConsoleShutdown(con);
            goto cleanup;
        }
        if (con->terminalToStream.data[con->terminalToStream.offset] == con->escapeChar) {
            virConsoleShutdown(con);
            goto cleanup;
        }

        con->terminalToStream.offset += got;
        if (con->terminalToStream.offset)
            virStreamEventUpdateCallback(con->st,
                                         VIR_STREAM_EVENT_READABLE |
                                         VIR_STREAM_EVENT_WRITABLE);
    }

    if (events & VIR_EVENT_HANDLE_ERROR) {
        virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("IO error on stdin"));
        virConsoleShutdown(con);
        goto cleanup;
    }

    if (events & VIR_EVENT_HANDLE_HANGUP) {
        virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("EOF on stdin"));
        virConsoleShutdown(con);
        goto cleanup;
    }

 cleanup:
    virObjectUnlock(con);
}

Esempio n. 5

File: virsh-console.c Progetto: libvirt/libvirt

static void
virConsoleEventOnStream(virStreamPtr st,
                        int events, void *opaque)
{
    virConsolePtr con = opaque;

    virObjectLock(con);

    /* we got late event after console was shutdown */
    if (!con->st)
        goto cleanup;

    if (events & VIR_STREAM_EVENT_READABLE) {
        size_t avail = con->streamToTerminal.length -
            con->streamToTerminal.offset;
        int got;

        if (avail < 1024) {
            if (VIR_REALLOC_N(con->streamToTerminal.data,
                              con->streamToTerminal.length + 1024) < 0) {
                virConsoleShutdown(con);
                goto cleanup;
            }
            con->streamToTerminal.length += 1024;
            avail += 1024;
        }

        got = virStreamRecv(st,
                            con->streamToTerminal.data +
                            con->streamToTerminal.offset,
                            avail);
        if (got == -2)
            goto cleanup; /* blocking */
        if (got <= 0) {
            if (got == 0)
                virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                               _("console stream EOF"));

            virConsoleShutdown(con);
            goto cleanup;
        }
        con->streamToTerminal.offset += got;
        if (con->streamToTerminal.offset)
            virEventUpdateHandle(con->stdoutWatch,
                                 VIR_EVENT_HANDLE_WRITABLE);
    }

    if (events & VIR_STREAM_EVENT_WRITABLE &&
        con->terminalToStream.offset) {
        ssize_t done;
        size_t avail;
        done = virStreamSend(con->st,
                             con->terminalToStream.data,
                             con->terminalToStream.offset);
        if (done == -2)
            goto cleanup; /* blocking */
        if (done < 0) {
            virConsoleShutdown(con);
            goto cleanup;
        }
        memmove(con->terminalToStream.data,
                con->terminalToStream.data + done,
                con->terminalToStream.offset - done);
        con->terminalToStream.offset -= done;

        avail = con->terminalToStream.length - con->terminalToStream.offset;
        if (avail > 1024) {
            ignore_value(VIR_REALLOC_N(con->terminalToStream.data,
                                       con->terminalToStream.offset + 1024));
            con->terminalToStream.length = con->terminalToStream.offset + 1024;
        }
    }
    if (!con->terminalToStream.offset)
        virStreamEventUpdateCallback(con->st,
                                     VIR_STREAM_EVENT_READABLE);

    if (events & VIR_STREAM_EVENT_ERROR ||
        events & VIR_STREAM_EVENT_HANGUP) {
        virConsoleShutdown(con);
    }

 cleanup:
    virObjectUnlock(con);
}

Esempio n. 6

File: console.c Progetto: mohankku/libvirt

static void
virConsoleEventOnStream(virStreamPtr st,
                        int events, void *opaque)
{
    virConsolePtr con = opaque;

    if (events & VIR_STREAM_EVENT_READABLE) {
        size_t avail = con->streamToTerminal.length -
            con->streamToTerminal.offset;
        int got;

        if (avail < 1024) {
            if (VIR_REALLOC_N(con->streamToTerminal.data,
                              con->streamToTerminal.length + 1024) < 0) {
                virReportOOMError();
                virConsoleShutdown(con);
                return;
            }
            con->streamToTerminal.length += 1024;
            avail += 1024;
        }

        got = virStreamRecv(st,
                            con->streamToTerminal.data +
                            con->streamToTerminal.offset,
                            avail);
        if (got == -2)
            return; /* blocking */
        if (got <= 0) {
            virConsoleShutdown(con);
            return;
        }
        con->streamToTerminal.offset += got;
        if (con->streamToTerminal.offset)
            virEventUpdateHandle(con->stdoutWatch,
                                 VIR_EVENT_HANDLE_WRITABLE);
    }

    if (events & VIR_STREAM_EVENT_WRITABLE &&
        con->terminalToStream.offset) {
        ssize_t done;
        size_t avail;
        done = virStreamSend(con->st,
                             con->terminalToStream.data,
                             con->terminalToStream.offset);
        if (done == -2)
            return; /* blocking */
        if (done < 0) {
            virConsoleShutdown(con);
            return;
        }
        memmove(con->terminalToStream.data,
                con->terminalToStream.data + done,
                con->terminalToStream.offset - done);
        con->terminalToStream.offset -= done;

        avail = con->terminalToStream.length - con->terminalToStream.offset;
        if (avail > 1024) {
            if (VIR_REALLOC_N(con->terminalToStream.data,
                              con->terminalToStream.offset + 1024) < 0)
            {}
            con->terminalToStream.length = con->terminalToStream.offset + 1024;
        }
    }
    if (!con->terminalToStream.offset)
        virStreamEventUpdateCallback(con->st,
                                     VIR_STREAM_EVENT_READABLE);

    if (events & VIR_STREAM_EVENT_ERROR ||
        events & VIR_STREAM_EVENT_HANGUP) {
        virConsoleShutdown(con);
    }
}