WebSVN – HelenOS – Diff – /trunk/uspace/srv/console/console.c

                          * consoles */
 static keyfield_t *interbuffer = NULL;      /**< Pointer to memory shared
                          * with framebufer used for
                          * faster virtual console
                          * switching */
+/** Size of fb_buf. */
+#define FB_BUF_SIZE 256
+/** Buffer for sending characters to FB driver. */
+static char fb_buf[FB_BUF_SIZE];
+/* Properties of fb_buf data. */
+static int fb_buf_row;      /**< Row where fb_buf data belong. */
+static int fb_buf_col;      /**< Column where fb_buf data start. */
+static int fb_console;      /**< VC to which fb_buf data belong. */
+int fb_bi = 0;          /**< Number of valid chars in fb_buf. */
+/** Size of cwrite_buf. */
+#define CWRITE_BUF_SIZE 256
+/** Buffer for receiving data via the CONSOLE_WRITE call from the client. */
+static char cwrite_buf[CWRITE_BUF_SIZE];
 /** Find unused virtual console.
+ *
  */
         set_rgb_color(attrs->a.r.fg_color, attrs->a.r.bg_color);
         break;
+    }
+}
+/** Write a character vector to FB driver via IPC. */
+static ssize_t fb_write(const char *buf, size_t nbyte, int row, int col)
+{
+    ipcarg_t rc;
+    ipc_call_t answer;
+    aid_t req;
+    async_serialize_start();
+    req = async_send_2(fb_info.phone, FB_WRITE, row, col, &answer);
+    rc = ipc_data_write_start(fb_info.phone, (void *) buf, nbyte);
+    if (rc != EOK) {
+        async_wait_for(req, NULL);
+        async_serialize_end();
+        return (ssize_t) rc;
+    }
+    async_wait_for(req, &rc);
+    async_serialize_end();
+    if (rc == EOK)
+        return (ssize_t) IPC_GET_ARG1(answer);
+    else
+        return -1;
+}
+/** Flush buffered characters to FB. */
+static void fb_buf_flush(void)
+{
+    screenbuffer_t *scr;
+    int i;
+    scr = &(connections[fb_console].screenbuffer);
+    if (fb_bi > 0) {
+        if (fb_write(fb_buf, fb_bi, fb_buf_row, fb_buf_col) < 0) {
+            /* Try falling back to char-by-char. */
+            for (i = 0; i < fb_bi; i++) {
+                async_msg_3(fb_info.phone, FB_PUTCHAR, fb_buf[i],
+                    fb_buf_row, fb_buf_col + i);
+            }
+        }
+        fb_bi = 0;
+    }
+}
+/** Print a character to the active VC with buffering. */
 static void prtchr(char c, int row, int col)
+{
+    if (fb_bi >= FB_BUF_SIZE)
+        fb_buf_flush();
+    if (fb_bi == 0) {
+        fb_buf_row = row;
+        fb_buf_col = col;
-    async_msg_3(fb_info.phone, FB_PUTCHAR, c, row, col);
+        fb_console = active_console;
+    }
+    fb_buf[fb_bi++] = c;
+}
 /** Check key and process special keys.
+ *
+ *
  */
 static void write_char(int console, char key)
+{
+    bool flush_cursor = false;
     screenbuffer_t *scr = &(connections[console].screenbuffer);
     switch (key) {
     case '\n':
+        fb_buf_flush();
+        flush_cursor = true;
         scr->position_y++;
         scr->position_x = 0;
         break;
     case '\r':
+        fb_buf_flush();
         break;
     case '\t':
+        fb_buf_flush();
         scr->position_x += 8;
         scr->position_x -= scr->position_x % 8;
         break;
     case '\b':
+        fb_buf_flush();
         if (scr->position_x == 0)
             break;
         scr->position_x--;
         if (console == active_console)
             prtchr(' ', scr->position_y, scr->position_x);
             prtchr(key, scr->position_y, scr->position_x);
         screenbuffer_putchar(scr, key);
         scr->position_x++;
+    }
-    scr->position_y += (scr->position_x >= scr->size_x);
+    if (scr->position_x >= scr->size_x) {
+        fb_buf_flush();
+        flush_cursor = true;
+        scr->position_y++;
+    }
     if (scr->position_y >= scr->size_y) {
         scr->position_y = scr->size_y - 1;
         screenbuffer_clear_line(scr, scr->top_line);
         scr->top_line = (scr->top_line + 1) % scr->size_y;
         if (console == active_console)
             async_msg_1(fb_info.phone, FB_SCROLL, 1);
+    }
     scr->position_x = scr->position_x % scr->size_x;
-    if (console == active_console)
+    if (console == active_console && flush_cursor)
         curs_goto(scr->position_y, scr->position_x);
+}
 /** Switch to new console */
 static void change_console(int newcons)
+{
     keyfield_t *field;
     attrs_t *attrs;
     if (newcons == active_console)
         return;
+    fb_buf_flush();
     if (newcons == KERNEL_CONSOLE) {
         async_serialize_start();
         curs_hide_sync();
         gcons_in_kernel();
         async_serialize_end();
+        }
         ipc_answer_0(callid, retval);
+    }
+}
+/** Handle CONSOLE_WRITE call. */
+static void cons_write(int consnum, ipc_callid_t rid, ipc_call_t *request)
+{
+    ipc_callid_t callid;
+    size_t len;
+    size_t i;
+    if (!ipc_data_write_receive(&callid, &len)) {
+        ipc_answer_0(callid, EINVAL);
+        ipc_answer_0(rid, EINVAL);
+    }
+    if (len > CWRITE_BUF_SIZE)
+        len = CWRITE_BUF_SIZE;
+    (void) ipc_data_write_finalize(callid, cwrite_buf, len);
+    for (i = 0; i < len; i++) {
+        write_char(consnum, cwrite_buf[i]);
+    }
+    gcons_notify_char(consnum);
+    ipc_answer_1(rid, EOK, len);
+}
 /** Default thread for new connections */
 static void client_connection(ipc_callid_t iid, ipc_call_t *icall)
+{
     ipc_callid_t callid;
     ipc_call_t call;
             return;
         case CONSOLE_PUTCHAR:
             write_char(consnum, IPC_GET_ARG1(call));
             gcons_notify_char(consnum);
             break;
+        case CONSOLE_WRITE:
+            cons_write(consnum, callid, &call);
+            continue;
         case CONSOLE_CLEAR:
             /* Send message to fb */
             if (consnum == active_console) {
                 async_msg_0(fb_info.phone, FB_CLEAR);
+            }
             screenbuffer_clear(&conn->screenbuffer);
             break;
         case CONSOLE_GOTO:
+            fb_buf_flush();
             screenbuffer_goto(&conn->screenbuffer,
                 IPC_GET_ARG2(call), IPC_GET_ARG1(call));
             if (consnum == active_console)
                 curs_goto(IPC_GET_ARG1(call),
                     IPC_GET_ARG2(call));
         case CONSOLE_GETSIZE:
             arg1 = fb_info.rows;
             arg2 = fb_info.cols;
             break;
         case CONSOLE_FLUSH:
+            fb_buf_flush();
             if (consnum == active_console)
                 async_req_0_0(fb_info.phone, FB_FLUSH);
             break;
         case CONSOLE_SET_STYLE:
+            fb_buf_flush();
             arg1 = IPC_GET_ARG1(call);
             screenbuffer_set_style(&conn->screenbuffer, arg1);
             if (consnum == active_console)
                 set_style(arg1);
             break;
         case CONSOLE_SET_COLOR:
+            fb_buf_flush();
             arg1 = IPC_GET_ARG1(call);
             arg2 = IPC_GET_ARG2(call);
             arg3 = IPC_GET_ARG3(call);
             screenbuffer_set_color(&conn->screenbuffer, arg1,
                 arg2, arg3);
             if (consnum == active_console)
                 set_color(arg1, arg2, arg3);
             break;
         case CONSOLE_SET_RGB_COLOR:
+            fb_buf_flush();
             arg1 = IPC_GET_ARG1(call);
             arg2 = IPC_GET_ARG2(call);
             screenbuffer_set_rgb_color(&conn->screenbuffer, arg1,
                 arg2);
             if (consnum == active_console)
                 set_rgb_color(arg1, arg2);
             break;
         case CONSOLE_CURSOR_VISIBILITY:
+            fb_buf_flush();
             arg1 = IPC_GET_ARG1(call);
             conn->screenbuffer.is_cursor_visible = arg1;
             if (consnum == active_console)
                 curs_visibility(arg1);
             break;

Subversion Repositories HelenOS

(root)/trunk/uspace/srv/console/console.c – Rev 4148 → 4164