make libfakebank scale

src/bank-lib/Makefile.am

@@ -67,4 +67,5 @@ libtalerfakebank_la_LIBADD = \
   -ljansson \
   $(LIBGNURLCURL_LIBS) \
   -lmicrohttpd \
+  -lpthread \
   $(XLIB)

src/bank-lib/taler-fakebank-run.c

@@ -59,6 +59,7 @@ run (void *cls,
      const struct GNUNET_CONFIGURATION_Handle *cfg)
 {
   unsigned long long port = 8082;
+  unsigned long long ram = 1024 * 1024 * 128; /* 128 M entries */
   char *currency_string;
 
   (void) cls;
@@ -81,9 +82,20 @@ run (void *cls,
                 "Listening on default port %llu\n",
                 port);
   }
+  if (GNUNET_OK !=
+      GNUNET_CONFIGURATION_get_value_number (cfg,
+                                             "bank",
+                                             "RAM_LIMIT",
+                                             &ram))
+  {
+    GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+                "Maximum transaction history in RAM set to default of %llu\n",
+                ram);
+  }
   if (NULL ==
       TALER_FAKEBANK_start2 ((uint16_t) port,
                              currency_string,
+                             ram,
                              num_threads,
                              (0 != connection_close) ))
     ret = 1;

src/include/taler_fakebank_lib.h

@@ -64,6 +64,7 @@ TALER_FAKEBANK_start (uint16_t port,
  *
  * @param port port to listen to
  * @param currency which currency should the bank offer
+ * @param ram_limit how much memory do we use at most
  * @param num_threads size of the thread pool, 0 to use the GNUnet scheduler
  * @param close_connections true to force closing a connection after each request (no HTTP keep-alive)
  * @return NULL on error
@@ -71,6 +72,7 @@ TALER_FAKEBANK_start (uint16_t port,
 struct TALER_FAKEBANK_Handle *
 TALER_FAKEBANK_start2 (uint16_t port,
                        const char *currency,
+                       uint64_t ram_limit,
                        unsigned int num_threads,
                        bool close_connections);
 
@@ -81,6 +83,9 @@ TALER_FAKEBANK_start2 (uint16_t port,
  * or #TALER_FAKEBANK_check_credit()).
  * If any transactions are onrecord, return #GNUNET_SYSERR.
  *
+ * Note that this function only works in
+ * single-threaded mode while nothing else is happening.
+ *
  * @param h bank instance
  * @return #GNUNET_OK on success
  */
@@ -139,6 +144,9 @@ TALER_FAKEBANK_make_admin_transfer (
  * to the transfer identifier and remove the transaction from the
  * list.  If the transaction was not recorded, return #GNUNET_SYSERR.
  *
+ * Note that this function only works in
+ * single-threaded mode while nothing else is happening.
+ *
  * @param h bank instance
  * @param want_amount transfer amount desired
  * @param want_debit account that should have been debited
@@ -162,6 +170,9 @@ TALER_FAKEBANK_check_debit (struct TALER_FAKEBANK_Handle *h,
  * @a want_credit account with the @a subject.  If so, remove the transaction
  * from the list.  If the transaction was not recorded, return #GNUNET_SYSERR.
  *
+ * Note that this function only works in
+ * single-threaded mode while nothing else is happening.
+ *
  * @param h bank instance
  * @param want_amount transfer amount desired
  * @param want_debit account that should have been debited