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-rw-r--r--Radio/HW/BladeRF/common/src/str_queue.c193
1 files changed, 193 insertions, 0 deletions
diff --git a/Radio/HW/BladeRF/common/src/str_queue.c b/Radio/HW/BladeRF/common/src/str_queue.c
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--- /dev/null
+++ b/Radio/HW/BladeRF/common/src/str_queue.c
@@ -0,0 +1,193 @@
+/*
+ * This file is part of the bladeRF project:
+ * http://www.github.com/nuand/bladeRF
+ *
+ * Copyright (c) 2014 Nuand LLC
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+#include <string.h>
+#include <stdlib.h>
+#include "str_queue.h"
+#include "host_config.h"
+
+struct str_queue_entry {
+ char *str;
+ struct str_queue_entry *next;
+};
+
+void str_queue_init(struct str_queue *q)
+{
+ memset(q, 0, sizeof(q[0]));
+}
+
+void str_queue_deinit(struct str_queue *q)
+{
+ char *str;
+
+ do {
+ str = str_queue_deq(q);
+ free(str);
+ } while (str != NULL);
+
+ q->head = NULL;
+ q->tail = NULL;
+}
+
+int str_queue_enq(struct str_queue *q, const char *str)
+{
+ struct str_queue_entry *entry = malloc(sizeof(entry[0]));
+ if (entry == NULL) {
+ return -1;
+ }
+
+ entry->str = strdup(str);
+ if (entry->str == NULL) {
+ free(entry);
+ return -1;
+ }
+ entry->next = NULL;
+
+ if (q->head == NULL) {
+ q->head = entry;
+ }
+
+ if (q->tail != NULL) {
+ q->tail->next = entry;
+ }
+
+ q->tail = entry;
+ return 0;
+}
+
+char * str_queue_deq(struct str_queue *q)
+{
+ char *ret;
+ struct str_queue_entry *entry;
+
+ entry = q->head;
+ if (entry == NULL) {
+ ret = NULL;
+ } else {
+ q->head = entry->next;
+ if (q->head == NULL) {
+ q->tail = NULL;
+ }
+
+ ret = entry->str;
+ free(entry);
+ }
+
+ return ret;
+}
+
+bool str_queue_empty(struct str_queue *q)
+{
+ return q->head == NULL || q->tail == NULL;
+}
+
+#if TEST_STR_QUEUE
+#include <stdio.h>
+
+#define STR_NULL "(null)"
+#define STR_1 "This is test string one."
+#define STR_2 "A second string queue test string"
+#define STR_3 "String thr33, this be"
+
+#define CHECK_EMPTY(q) do { \
+ if (str_queue_empty(q) != true) { \
+ fprintf(stderr, "Queue not empty!\n"); \
+ return EXIT_FAILURE; \
+ } \
+ } while (0)
+
+#define CHECK_NONEMPTY(q) do { \
+ if (str_queue_empty(q) != false) { \
+ fprintf(stderr, "Queue unexpectedly empty!\n"); \
+ return EXIT_FAILURE; \
+ } \
+ } while (0)
+
+#define ENQ(q, str) do { \
+ int status_ = str_queue_enq(q, str); \
+ if (status_ != 0) { \
+ fprintf(stderr, "Failed to enqueue %s\n", str); \
+ return EXIT_FAILURE; \
+ } else { \
+ printf("Enqueued: %s\n", str); \
+ } \
+ } while (0)
+
+#define DEQ(q, exp) do { \
+ char * str_; \
+ bool failed_; \
+ if (!strcmp(exp, STR_NULL)) { \
+ CHECK_EMPTY(q); \
+ } else { \
+ CHECK_NONEMPTY(q); \
+ } \
+ str_ = str_queue_deq(q); \
+ printf("Dequeued: %s\n", str_); \
+ if (str_ == NULL) { \
+ failed_ = strcmp(exp, STR_NULL) != 0; \
+ } else { \
+ failed_ = strcmp(str_, exp) != 0; \
+ } \
+ if (failed_) { \
+ fprintf(stderr, "Dequeue failed.\n"); \
+ return EXIT_FAILURE; \
+ } \
+ } while (0)
+
+int main(void)
+{
+ char *str;
+ struct str_queue q;
+
+ str_queue_init(&q);
+ str = str_queue_deq(&q);
+
+
+ DEQ(&q, STR_NULL);
+ ENQ(&q, STR_1);
+ DEQ(&q, STR_1);
+ DEQ(&q, STR_NULL);
+ DEQ(&q, STR_NULL);
+
+ ENQ(&q, STR_1);
+ ENQ(&q, STR_2);
+ DEQ(&q, STR_1);
+ DEQ(&q, STR_2);
+ DEQ(&q, STR_NULL);
+
+ ENQ(&q, STR_1);
+ ENQ(&q, STR_2);
+ DEQ(&q, STR_1);
+ ENQ(&q, STR_3);
+ DEQ(&q, STR_2);
+ ENQ(&q, STR_1);
+ DEQ(&q, STR_3);
+ DEQ(&q, STR_1);
+ DEQ(&q, STR_NULL);
+ DEQ(&q, STR_NULL);
+
+ str_queue_deinit(&q);
+ return 0;
+}
+#endif