Remove xcl and CVSROOT.

1 files changed, 272 insertions, 0 deletions

diff --git a/src/xcb_out.c b/src/xcb_out.c
new file mode 100644
index 0000000..b3a556a
--- /dev/null
+++ b/src/xcb_out.c
@@ -0,0 +1,272 @@
+/* Copyright (C) 2001-2004 Bart Massey and Jamey Sharp.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ * Except as contained in this notice, the names of the authors or their
+ * institutions shall not be used in advertising or otherwise to promote the
+ * sale, use or other dealings in this Software without prior written
+ * authorization from the authors.
+ */
+
+/* Stuff that sends stuff to the server. */
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+
+#include "xcb.h"
+#include "xcbext.h"
+#include "xcbint.h"
+#include "extensions/bigreq.h"
+
+static int force_sequence_wrap(XCBConnection *c)
+{
+    int ret = 1;
+    if((c->out.request - c->in.request_read) > 65530)
+    {
+        pthread_mutex_unlock(&c->iolock);
+        ret = XCBSync(c, 0);
+        pthread_mutex_lock(&c->iolock);
+    }
+    return ret;
+}
+
+/* Public interface */
+
+CARD32 XCBGetMaximumRequestLength(XCBConnection *c)
+{
+    pthread_mutex_lock(&c->out.reqlenlock);
+    if(!c->out.maximum_request_length)
+    {
+        const XCBQueryExtensionRep *ext;
+        c->out.maximum_request_length = c->setup->maximum_request_length;
+        ext = XCBGetExtensionData(c, &XCBBigRequestsId);
+        if(ext && ext->present)
+        {
+            XCBBigRequestsEnableRep *r = XCBBigRequestsEnableReply(c, XCBBigRequestsEnable(c), 0);
+            c->out.maximum_request_length = r->maximum_request_length;
+            free(r);
+        }
+    }
+    pthread_mutex_unlock(&c->out.reqlenlock);
+    return c->out.maximum_request_length;
+}
+
+int XCBSendRequest(XCBConnection *c, unsigned int *request, struct iovec *vector, const XCBProtocolRequest *req)
+{
+    int ret;
+    int i;
+    struct iovec prefix[2];
+    CARD16 shortlen = 0;
+    CARD32 longlen = 0;
+
+    assert(c != 0);
+    assert(request != 0);
+    assert(vector != 0);
+    assert(req->count > 0);
+
+    /* put together the length field, possibly using BIGREQUESTS */
+    for(i = 0; i < req->count; ++i)
+        longlen += XCB_CEIL(vector[i].iov_len) >> 2;
+
+    if(longlen > c->setup->maximum_request_length)
+    {
+        if(longlen > XCBGetMaximumRequestLength(c))
+            return 0; /* server can't take this; maybe need BIGREQUESTS? */
+    }
+    else
+    {
+        /* we don't need BIGREQUESTS. */
+        shortlen = longlen;
+        longlen = 0;
+    }
+
+    /* set the length field. */
+    i = 0;
+    prefix[i].iov_base = vector[0].iov_base;
+    prefix[i].iov_len = sizeof(CARD32);
+    vector[0].iov_base = ((char *) vector[0].iov_base) + sizeof(CARD32);
+    vector[0].iov_len -= sizeof(CARD32);
+    ((CARD16 *) prefix[i].iov_base)[1] = shortlen;
+    ++i;
+    if(!shortlen)
+    {
+        ++longlen;
+        prefix[i].iov_base = &longlen;
+        prefix[i].iov_len = sizeof(CARD32);
+        ++i;
+    }
+
+    /* set the major opcode, and the minor opcode for extensions */
+    if(req->ext)
+    {
+        const XCBQueryExtensionRep *extension = XCBGetExtensionData(c, req->ext);
+        /* TODO: better error handling here, please! */
+        assert(extension && extension->present);
+        ((CARD8 *) prefix[0].iov_base)[0] = extension->major_opcode;
+        ((CARD8 *) prefix[0].iov_base)[1] = req->opcode;
+    }
+    else
+        ((CARD8 *) prefix[0].iov_base)[0] = req->opcode;
+
+    /* get a sequence number and arrange for delivery. */
+    pthread_mutex_lock(&c->iolock);
+    if(req->isvoid && !force_sequence_wrap(c))
+    {
+        pthread_mutex_unlock(&c->iolock);
+        return -1;
+    }
+
+    *request = ++c->out.request;
+
+    if(!req->isvoid)
+        _xcb_in_expect_reply(c, *request);
+
+    ret = _xcb_out_write_block(c, prefix, i);
+    if(ret > 0)
+        ret = _xcb_out_write_block(c, vector, req->count);
+    pthread_mutex_unlock(&c->iolock);
+
+    return ret;
+}
+
+int XCBFlush(XCBConnection *c)
+{
+    int ret;
+    pthread_mutex_lock(&c->iolock);
+    ret = _xcb_out_flush(c);
+    pthread_mutex_unlock(&c->iolock);
+    return ret;
+}
+
+/* Private interface */
+
+int _xcb_out_init(_xcb_out *out)
+{
+    if(pthread_cond_init(&out->cond, 0))
+        return 0;
+    out->writing = 0;
+
+    out->queue_len = 0;
+    out->vec = 0;
+    out->vec_len = 0;
+
+    out->last_request = 0;
+    out->request = 0;
+    out->request_written = 0;
+
+    if(pthread_mutex_init(&out->reqlenlock, 0))
+        return 0;
+    out->maximum_request_length = 0;
+
+    return 1;
+}
+
+void _xcb_out_destroy(_xcb_out *out)
+{
+    pthread_cond_destroy(&out->cond);
+    pthread_mutex_destroy(&out->reqlenlock);
+    free(out->vec);
+}
+
+int _xcb_out_write(XCBConnection *c)
+{
+    int n;
+    if(c->out.vec_len)
+        n = _xcb_writev(c->fd, c->out.vec, c->out.vec_len);
+    else
+        n = _xcb_write(c->fd, &c->out.queue, &c->out.queue_len);
+
+    if(n < 0 && errno == EAGAIN)
+        n = 1;
+
+    if(c->out.vec_len)
+    {
+        int i;
+        for(i = 0; i < c->out.vec_len; ++i)
+            if(c->out.vec[i].iov_len)
+                return n;
+        c->out.vec_len = 0;
+    }
+    return n;
+}
+
+int _xcb_out_write_block(XCBConnection *c, struct iovec *vector, size_t count)
+{
+    static const char pad[3];
+    int i;
+    int len = 0;
+
+    for(i = 0; i < count; ++i)
+        len += XCB_CEIL(vector[i].iov_len);
+
+    /* Is the queue about to overflow? */
+    if(c->out.queue_len + len < sizeof(c->out.queue))
+    {
+        /* No, this will fit. */
+        for(i = 0; i < count; ++i)
+        {
+            memcpy(c->out.queue + c->out.queue_len, vector[i].iov_base, vector[i].iov_len);
+            if(vector[i].iov_len & 3)
+                memset(c->out.queue + c->out.queue_len + vector[i].iov_len, 0, XCB_PAD(vector[i].iov_len));
+            c->out.queue_len += XCB_CEIL(vector[i].iov_len);
+        }
+        return len;
+    }
+
+    assert(!c->out.vec_len);
+    assert(!c->out.vec);
+    c->out.vec = malloc(sizeof(struct iovec) * (1 + count * 2));
+    if(!c->out.vec)
+        return -1;
+    if(c->out.queue_len)
+    {
+        c->out.vec[c->out.vec_len].iov_base = c->out.queue;
+        c->out.vec[c->out.vec_len++].iov_len = c->out.queue_len;
+        c->out.queue_len = 0;
+    }
+    for(i = 0; i < count; ++i)
+    {
+        if(!vector[i].iov_len)
+            continue;
+        c->out.vec[c->out.vec_len].iov_base = vector[i].iov_base;
+        c->out.vec[c->out.vec_len++].iov_len = vector[i].iov_len;
+        if(!XCB_PAD(vector[i].iov_len))
+            continue;
+        c->out.vec[c->out.vec_len].iov_base = (void *) pad;
+        c->out.vec[c->out.vec_len++].iov_len = XCB_PAD(vector[i].iov_len);
+    }
+    if(_xcb_out_flush(c) <= 0)
+        len = -1;
+    free(c->out.vec);
+    c->out.vec = 0;
+
+    return len;
+}
+
+int _xcb_out_flush(XCBConnection *c)
+{
+    int ret = 1;
+    while(ret > 0 && (c->out.queue_len || c->out.vec_len))
+        ret = _xcb_conn_wait(c, /*should_write*/ 1, &c->out.cond);
+    c->out.last_request = 0;
+    c->out.request_written = c->out.request;
+    pthread_cond_broadcast(&c->out.cond);
+    return ret;
+}