Integer type name change.

[runtime.git] / lib / silcutil / unix / silcunixschedule.c

diff --git a/lib/silcutil/unix/silcunixschedule.c b/lib/silcutil/unix/silcunixschedule.c
index 951e1aeab53fa223355b8974576396733a5fe2f3..2449445b1ceffb949ecdfdf9ac1f7a1b175c2c83 100644 (file)
--- a/lib/silcutil/unix/silcunixschedule.c
+++ b/lib/silcutil/unix/silcunixschedule.c
@@ -20,11 +20,130 @@
 /* $Id$ */
 
 #include "silcincludes.h"
+#include "silcschedule_i.h"
 
 /* Calls normal select() system call. */
 
-int silc_select(int n, fd_set *readfds, fd_set *writefds,
-               fd_set *exceptfds, struct timeval *timeout)
+int silc_select(SilcScheduleFd fds, SilcUInt32 fds_count, struct timeval *timeout)
 {
-  return select(n, readfds, writefds, exceptfds, timeout);
+  fd_set in, out;
+  int ret, i, max_fd = 0;
+
+  FD_ZERO(&in);
+  FD_ZERO(&out);
+
+  for (i = 0; i < fds_count; i++) {
+    if (!fds[i].events)
+      continue;
+
+    if (fds[i].fd > max_fd)
+      max_fd = fds[i].fd;
+
+    if (fds[i].events & SILC_TASK_READ)
+      FD_SET(fds[i].fd, &in);
+    if (fds[i].events & SILC_TASK_WRITE)
+      FD_SET(fds[i].fd, &out);
+
+    fds[i].revents = 0;
+  }
+
+  ret = select(max_fd + 1, &in, &out, NULL, timeout);
+  if (ret <= 0)
+    return ret;
+
+  for (i = 0; i < fds_count; i++) {
+    if (!fds[i].events)
+      continue;
+
+    if (FD_ISSET(fds[i].fd, &in))
+      fds[i].revents |= SILC_TASK_READ;
+    if (FD_ISSET(fds[i].fd, &out))
+      fds[i].revents |= SILC_TASK_WRITE;
+  }
+
+  return ret;
+}
+
+#ifdef SILC_THREADS
+
+/* Internal wakeup context. */
+typedef struct {
+  int wakeup_pipe[2];
+  SilcTask wakeup_task;
+} *SilcUnixWakeup;
+
+SILC_TASK_CALLBACK(silc_schedule_wakeup_cb)
+{
+  SilcUnixWakeup wakeup = (SilcUnixWakeup)context;
+  unsigned char c;
+
+  read(wakeup->wakeup_pipe[0], &c, 1);
+}
+
+#endif /* SILC_THREADS */
+
+/* Initializes the wakeup of the scheduler. In multi-threaded environment
+   the scheduler needs to be wakenup when tasks are added or removed from
+   the task queues. This will initialize the wakeup for the scheduler.
+   Any tasks that needs to be registered must be registered to the `queue'.
+   It is quaranteed that the scheduler will automatically free any
+   registered tasks in this queue. This is system specific routine. */
+
+void *silc_schedule_wakeup_init(SilcSchedule schedule)
+{
+#ifdef SILC_THREADS
+  SilcUnixWakeup wakeup;
+
+  wakeup = silc_calloc(1, sizeof(*wakeup));
+
+  if (pipe(wakeup->wakeup_pipe)) {
+    silc_free(wakeup);
+    return NULL;
+  }
+
+  wakeup->wakeup_task = 
+    silc_schedule_task_add(schedule, wakeup->wakeup_pipe[0],
+                          silc_schedule_wakeup_cb, wakeup,
+                          0, 0, SILC_TASK_FD, 
+                          SILC_TASK_PRI_NORMAL);
+  if (!wakeup->wakeup_task) {
+    close(wakeup->wakeup_pipe[0]);
+    close(wakeup->wakeup_pipe[1]);
+    silc_free(wakeup);
+    return NULL;
+  }
+
+  return (void *)wakeup;
+#endif
+  return NULL;
+}
+
+/* Uninitializes the system specific wakeup. */
+
+void silc_schedule_wakeup_uninit(void *context)
+{
+#ifdef SILC_THREADS
+  SilcUnixWakeup wakeup = (SilcUnixWakeup)context;
+
+  if (!wakeup)
+    return;
+
+  close(wakeup->wakeup_pipe[0]);
+  close(wakeup->wakeup_pipe[1]);
+  silc_free(wakeup);
+#endif
+}
+
+/* Wakes up the scheduler */
+
+void silc_schedule_wakeup_internal(void *context)
+{
+#ifdef SILC_THREADS
+  SilcUnixWakeup wakeup = (SilcUnixWakeup)context;
+
+  if (!wakeup)
+    return;
+
+  write(wakeup->wakeup_pipe[1], "!", 1);
+#endif
 }