group all drivers into a single object

[libsigrok.git] / src / drivers.c

diff --git a/src/drivers.c b/src/drivers.c
new file mode 100644 (file)
index 0000000..6200e5e
--- /dev/null
+++ b/src/drivers.c
@@ -0,0 +1,56 @@
+/*
+ * This file is part of the libsigrok project.
+ *
+ * Copyright (C) 2016 Lars-Peter Clausen <lars@metafoo.de>
+ * Copyright (C) 2016 Aurelien Jacobs <aurel@gnuage.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <glib.h>
+#include <libsigrok/libsigrok.h>
+#include "libsigrok-internal.h"
+
+/*
+ * sr_driver_list is a special section contains pointers to all the hardware
+ * drivers built into the library. The __start and __stop symbols are
+ * auto-generated by the linker (OSX needs a little help) and point to the start
+ * and end of the section.  They are used to iterate over the list of all
+ * drivers.
+ */
+#ifdef __APPLE__
+extern struct sr_dev_driver *__start_sr_driver_list __asm("section$start$__DATA$__sr_driver_list");
+extern struct sr_dev_driver *__stop_sr_driver_list __asm("section$end$__DATA$__sr_driver_list");
+#else
+extern struct sr_dev_driver *__start_sr_driver_list;
+extern struct sr_dev_driver *__stop_sr_driver_list;
+#endif
+
+/** @private
+ * Initialize the driver list in a fresh libsigrok context.
+ *
+ * @param ctx Pointer to a libsigrok context struct. Must not be NULL.
+ */
+SR_PRIV void sr_drivers_init(struct sr_context *ctx)
+{
+       struct sr_dev_driver **drivers;
+       GArray *array;
+
+       array = g_array_new(TRUE, FALSE, sizeof(struct sr_dev_driver *));
+       for (drivers = &__start_sr_driver_list; drivers < &__stop_sr_driver_list;
+               drivers++)
+               g_array_append_val(array, *drivers);
+       ctx->driver_list = (struct sr_dev_driver **)array->data;
+       g_array_free(array, FALSE);
+}