add memory-related API

docs/examples.rst

@@ -44,10 +44,10 @@ Subscribe
   #include "zenoh.h"
 
   void data_handler(const z_sample_t *sample, const void *arg) {
-      char *keystr = z_keyexpr_to_string(sample->keyexpr);
+      z_owned_str_t keystr = z_keyexpr_to_string(sample->keyexpr);
       printf(">> Received (%s, %.*s)\n",
           keystr, (int)sample->payload.len, sample->payload.start);
-      free(keystr);
+      z_drop(z_move(keystr));
   }
 
   int main(int argc, char **argv) {
@@ -87,9 +87,9 @@ Query
           if (z_reply_is_ok(&reply))
           {
               z_sample_t sample = z_reply_ok(&reply);
-              char *keystr = z_keyexpr_to_string(sample.keyexpr);
+              z_owned_str_t keystr = z_keyexpr_to_string(sample.keyexpr);
               printf(">> Received ('%s': '%.*s')\n", keystr, (int)sample.payload.len, sample.payload.start);
-              free(keystr);
+              z_drop(z_move(keystr));
           }
       }
 

examples/z_ping.c

@@ -52,7 +52,7 @@ int main(int argc, char** argv) {
     z_owned_publisher_t pub = z_declare_publisher(z_loan(session), ping, NULL);
     z_owned_closure_sample_t respond = z_closure(callback, drop, (void*)(&pub));
     z_owned_subscriber_t sub = z_declare_subscriber(z_loan(session), pong, z_move(respond), NULL);
-    uint8_t* data = malloc(args.size);
+    uint8_t* data = z_malloc(args.size);
     for (int i = 0; i < args.size; i++) {
         data[i] = i % 10;
     }
@@ -76,7 +76,7 @@ int main(int argc, char** argv) {
         }
     }
     struct timespec t_start, t_stop, t_timeout;
-    unsigned long* results = malloc(sizeof(unsigned long) * args.number_of_pings);
+    unsigned long* results = z_malloc(sizeof(unsigned long) * args.number_of_pings);
     for (int i = 0; i < args.number_of_pings; i++) {
         clock_gettime(CLOCK_REALTIME, &t_timeout);
         t_timeout.tv_sec += PING_TIMEOUT_SEC;
@@ -93,8 +93,8 @@ int main(int argc, char** argv) {
         printf("%d bytes: seq=%d rtt=%luµs, lat=%luµs\n", args.size, i, results[i], results[i] / 2);
     }
     pthread_mutex_unlock(&mutex);
-    free(results);
-    free(data);
+    z_free(results);
+    z_free(data);
     z_drop(z_move(sub));
     z_drop(z_move(pub));
     z_close(z_move(session));

examples/z_pub_thr.c

@@ -24,7 +24,7 @@ int main(int argc, char **argv) {
 
     char *keyexpr = "test/thr";
     size_t len = atoi(argv[1]);
-    uint8_t *value = (uint8_t *)malloc(len);
+    uint8_t *value = (uint8_t *)z_malloc(len);
     memset(value, 1, len);
 
     z_owned_config_t config = z_config_default();

examples/z_scout.c

@@ -83,14 +83,14 @@ void callback(z_owned_hello_t *hello, void *context) {
 void drop(void *context) {
     printf("Dropping scout\n");
     int count = *(int *)context;
-    free(context);
+    z_free(context);
     if (!count) {
         printf("Did not find any zenoh process.\n");
     }
 }
 
 int main(int argc, char **argv) {
-    int *context = malloc(sizeof(int));
+    int *context = z_malloc(sizeof(int));
     *context = 0;
     z_owned_scouting_config_t config = z_scouting_config_default();
     z_owned_closure_hello_t closure = z_closure(callback, drop, context);

examples/z_sub_thr.c

@@ -26,7 +26,7 @@ typedef struct {
 } z_stats_t;
 
 z_stats_t *z_stats_make() {
-    z_stats_t *stats = malloc(sizeof(z_stats_t));
+    z_stats_t *stats = z_malloc(sizeof(z_stats_t));
     stats->count = 0;
     stats->finished_rounds = 0;
     stats->first_start.tv_nsec = 0;
@@ -63,7 +63,7 @@ void drop_stats(void *context) {
     double elapsed_s = get_elapsed_s(&stats->first_start, &end);
     printf("Stats being dropped after unsubscribing: sent %ld messages over %f seconds (%f msg/s)\n", sent_messages,
            elapsed_s, (double)sent_messages / elapsed_s);
-    free(context);
+    z_free(context);
 }
 
 int main(int argc, char **argv) {

include/zenoh.h

@@ -40,4 +40,5 @@ extern "C" {
 }
 #endif
 #include "zenoh_macros.h"
+#include "zenoh_memory.h"
 #endif

include/zenoh_memory.h

@@ -0,0 +1,7 @@
+#pragma once
+#include <stdlib.h>
+
+/*------------------ Memory ------------------*/
+static inline void *z_malloc(size_t size) { return malloc(size); }
+static inline void *z_realloc(void *ptr, size_t size) {return realloc(ptr, size); }
+static inline void z_free(void *ptr) {return free(ptr); }

tests/z_api_alignment_test.c

@@ -138,7 +138,7 @@ int main(int argc, char **argv) {
     sleep(SLEEP);
 
     size_t keyexpr_len = strlen(URI);
-    char *keyexpr_str = (char *)malloc(keyexpr_len + 1);
+    char *keyexpr_str = (char *)z_malloc(keyexpr_len + 1);
     memcpy(keyexpr_str, URI, keyexpr_len);
     keyexpr_str[keyexpr_len] = '\0';
     int8_t _ret_int8 = z_keyexpr_is_canon(keyexpr_str, keyexpr_len);
@@ -374,7 +374,7 @@ int main(int argc, char **argv) {
 
     sleep(SLEEP * 5);
 
-    free(keyexpr_str);
+    z_free(keyexpr_str);
 
     return 0;
 }