X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=src%2Fcommon%2Ffilter.cpp;fp=src%2Fcommon%2Ffilter.cpp;h=f74b6374bcea3dcbb4b1405361917a334e23591b;hb=a6bc4ca9d659caf016ef932fcd944029737ac57c;hp=0000000000000000000000000000000000000000;hpb=97535efaa975ca52bf02c2d5e76351bfd2e3defa;p=lttng-tools.git

diff --git a/src/common/filter.cpp b/src/common/filter.cpp
new file mode 100644
index 000000000..f74b6374b
--- /dev/null
+++ b/src/common/filter.cpp
@@ -0,0 +1,86 @@
+/*
+ * Copyright 2016 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * SPDX-License-Identifier: LGPL-2.1-only
+ *
+ */
+
+#include "filter.h"
+#include <stddef.h>
+
+struct bytecode_symbol_iterator {
+	/* No ownership of bytecode is taken. */
+	char *bytecode;
+	size_t offset, len;
+};
+
+struct bytecode_symbol_iterator *bytecode_symbol_iterator_create(
+		struct lttng_bytecode *bytecode)
+{
+	struct bytecode_symbol_iterator *it = NULL;
+
+	if (!bytecode) {
+		goto end;
+	}
+
+	it = (bytecode_symbol_iterator *) zmalloc(sizeof(*it));
+	if (!it) {
+		goto end;
+	}
+
+	it->bytecode = bytecode->data;
+	it->offset = bytecode->reloc_table_offset;
+	it->len = bytecode->len;
+end:
+	return it;
+}
+
+int bytecode_symbol_iterator_next(struct bytecode_symbol_iterator *it)
+{
+	int ret;
+	size_t len;
+
+	if (!it || it->offset >= it->len) {
+		ret = -1;
+		goto end;
+	}
+
+	len = strlen(it->bytecode + it->offset + sizeof(uint16_t)) + 1;
+	it->offset += len + sizeof(uint16_t);
+	ret = it->offset >= it->len ? -1 : 0;
+end:
+	return ret;
+}
+
+int bytecode_symbol_iterator_get_type(struct bytecode_symbol_iterator *it)
+{
+	int ret;
+
+	if (!it) {
+		ret = -1;
+		goto end;
+	}
+
+	ret = *((uint16_t *) (it->bytecode + it->offset));
+end:
+	return ret;
+ }
+
+const char *bytecode_symbol_iterator_get_name(
+		struct bytecode_symbol_iterator *it)
+{
+	const char *ret = NULL;
+
+	if (!it) {
+		goto end;
+	}
+
+	ret = it->bytecode + it->offset + sizeof(uint16_t);
+end:
+	return ret;
+}
+
+void bytecode_symbol_iterator_destroy(struct bytecode_symbol_iterator *it)
+{
+	free(it);
+}