first version of a textlog remote logger

2016-04-27 18:31:34 +02:00
parent dca2143b04
commit e15a809458
8 changed files with 556 additions and 1 deletions
@@ -0,0 +1,104 @@
+#include "handler.h"
+#include "event.h"
+#include "database.h"
+#include <stdlib.h>
+#include <stdio.h>
+
+typedef void (*handler_function)(void *p, event e);
+
+struct handler_data {
+  handler_function f;
+  void *p;
+  unsigned long id;
+};
+
+struct handler_list {
+  struct handler_data *f;
+  int size;
+  int maxsize;
+};
+
+/* internal definition of an event handler */
+struct _event_handler {
+  void *database;
+  struct handler_list *events;
+  unsigned long next_id;
+};
+
+#if 0
+#include <stdio.h>
+void handle_event(event_handler *h, event e)
+{
+  int i;
+  printf("event %s (%d)\n", event_name_from_id(h->database, e.type), e.type);
+  for (i = 0; i < e.ecount; i++) {
+    switch (e.e[i].type) {
+    case EVENT_INT:
+      printf("    %d: INT %d\n", i, *(int *)&e.buffer[e.e[i].offset]);
+      break;
+    case EVENT_STRING:
+      printf("    %d: STRING '%s'\n", i, &e.buffer[e.e[i].offset]);
+      break;
+    case EVENT_BUFFER:
+      printf("    %d: BUFFER size %d\n", i, *(int *)&e.buffer[e.e[i].offset]);
+      break;
+    }
+  }
+}
+#endif
+
+void handle_event(event_handler *_h, event e)
+{
+  struct _event_handler *h = _h;
+  int i;
+  for (i = 0; i < h->events[e.type].size; i++)
+    h->events[e.type].f[i].f(h->events[e.type].f[i].p, e);
+}
+
+event_handler *new_handler(void *database)
+{
+  struct _event_handler *ret = calloc(1, sizeof(struct _event_handler));
+  if (ret == NULL) abort();
+
+  ret->database = database;
+
+  ret->events = calloc(number_of_ids(database), sizeof(struct handler_list));
+  if (ret->events == NULL) abort();
+
+  ret->next_id = 1;
+
+  return ret;
+}
+
+unsigned long register_handler_function(event_handler *_h, int event_id,
+    void (*f)(void *, event), void *p)
+{
+  struct _event_handler *h = _h;
+  unsigned long ret = h->next_id;
+  struct handler_list *l;
+
+  h->next_id++;
+  if (h->next_id == 2UL * 1024 * 1024 * 1024)
+    { printf("%s:%d: this is bad...\n", __FILE__, __LINE__); abort(); }
+
+  l = &h->events[event_id];
+  if (l->size == l->maxsize) {
+    l->maxsize += 16;
+    l->f = realloc(l->f, l->maxsize * sizeof(struct handler_data));
+    if (l->f == NULL) abort();
+  }
+  l->f[l->size].f = f;
+  l->f[l->size].p = p;
+  l->f[l->size].id = ret;
+
+  l->size++;
+
+  return ret;
+}
+
+void remove_handler_function(event_handler *h, int event_id,
+    unsigned long handler_id)
+{
+  printf("%s:%d: TODO\n", __FILE__, __LINE__);
+  abort();
+}