]> git.ozlabs.org Git - ccan/blobdiff - ccan/io/test/run-set_alloc.c
io: io_set_alloc()
[ccan] / ccan / io / test / run-set_alloc.c
diff --git a/ccan/io/test/run-set_alloc.c b/ccan/io/test/run-set_alloc.c
new file mode 100644 (file)
index 0000000..fd0c83a
--- /dev/null
@@ -0,0 +1,240 @@
+#include <ccan/tap/tap.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <signal.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+/* Make sure we override these! */
+static void *no_malloc(size_t size)
+{
+       abort();
+}
+static void *no_realloc(void *p, size_t size)
+{
+       abort();
+}
+static void no_free(void *p)
+{
+       abort();
+}
+#define malloc no_malloc
+#define realloc no_realloc
+#define free no_free
+
+#include <ccan/io/poll.c>
+#include <ccan/io/io.c>
+
+#undef malloc
+#undef realloc
+#undef free
+
+static unsigned int alloc_count, realloc_count, free_count;
+static void *ptrs[100];
+
+static void **find_ptr(void *p)
+{
+       unsigned int i;
+
+       for (i = 0; i < 100; i++)
+               if (ptrs[i] == p)
+                       return ptrs + i;
+       return NULL;
+}
+
+static void *allocfn(size_t size)
+{
+       alloc_count++;
+       return *find_ptr(NULL) = malloc(size);
+}
+
+static void *reallocfn(void *ptr, size_t size)
+{
+       realloc_count++;
+       if (!ptr)
+               alloc_count++;
+
+       return *find_ptr(ptr) = realloc(ptr, size);
+}
+
+static void freefn(void *ptr)
+{
+       free_count++;
+       free(ptr);
+       *find_ptr(ptr) = NULL;
+}
+
+#ifndef PORT
+#define PORT "65015"
+#endif
+
+struct data {
+       int state;
+       int timeout_usec;
+       bool timed_out;
+       char buf[4];
+};
+
+
+static struct io_plan no_timeout(struct io_conn *conn, struct data *d)
+{
+       ok1(d->state == 1);
+       d->state++;
+       return io_close();
+}
+
+static struct io_plan timeout(struct io_conn *conn, struct data *d)
+{
+       ok1(d->state == 1);
+       d->state++;
+       d->timed_out = true;
+       return io_close();
+}
+
+static void finish_ok(struct io_conn *conn, struct data *d)
+{
+       ok1(d->state == 2);
+       d->state++;
+       io_break(d, io_idle());
+}
+
+static void init_conn(int fd, struct data *d)
+{
+       struct io_conn *conn;
+
+       ok1(d->state == 0);
+       d->state++;
+
+       conn = io_new_conn(fd, io_read(d->buf, sizeof(d->buf), no_timeout, d));
+       io_set_finish(conn, finish_ok, d);
+       io_timeout(conn, time_from_usec(d->timeout_usec), timeout, d);
+}
+
+static int make_listen_fd(const char *port, struct addrinfo **info)
+{
+       int fd, on = 1;
+       struct addrinfo *addrinfo, hints;
+
+       memset(&hints, 0, sizeof(hints));
+       hints.ai_family = AF_UNSPEC;
+       hints.ai_socktype = SOCK_STREAM;
+       hints.ai_flags = AI_PASSIVE;
+       hints.ai_protocol = 0;
+
+       if (getaddrinfo(NULL, port, &hints, &addrinfo) != 0)
+               return -1;
+
+       fd = socket(addrinfo->ai_family, addrinfo->ai_socktype,
+                   addrinfo->ai_protocol);
+       if (fd < 0)
+               return -1;
+
+       setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
+       if (bind(fd, addrinfo->ai_addr, addrinfo->ai_addrlen) != 0) {
+               close(fd);
+               return -1;
+       }
+       if (listen(fd, 1) != 0) {
+               close(fd);
+               return -1;
+       }
+       *info = addrinfo;
+       return fd;
+}
+
+int main(void)
+{
+       struct data *d = allocfn(sizeof(*d));
+       struct addrinfo *addrinfo;
+       struct io_listener *l;
+       int fd, status;
+
+       io_set_alloc(allocfn, reallocfn, freefn);
+
+       /* This is how many tests you plan to run */
+       plan_tests(25);
+       d->state = 0;
+       d->timed_out = false;
+       d->timeout_usec = 100000;
+       fd = make_listen_fd(PORT, &addrinfo);
+       ok1(fd >= 0);
+       l = io_new_listener(fd, init_conn, d);
+       ok1(l);
+       fflush(stdout);
+
+       if (!fork()) {
+               int i;
+
+               io_close_listener(l);
+               fd = socket(addrinfo->ai_family, addrinfo->ai_socktype,
+                           addrinfo->ai_protocol);
+               if (fd < 0)
+                       exit(1);
+               if (connect(fd, addrinfo->ai_addr, addrinfo->ai_addrlen) != 0)
+                       exit(2);
+               signal(SIGPIPE, SIG_IGN);
+               usleep(500000);
+               for (i = 0; i < strlen("hellothere"); i++) {
+                       if (write(fd, "hellothere" + i, 1) != 1)
+                               break;
+               }
+               close(fd);
+               freeaddrinfo(addrinfo);
+               free(d);
+               exit(i);
+       }
+       ok1(io_loop() == d);
+       ok1(d->state == 3);
+       ok1(d->timed_out == true);
+       ok1(wait(&status));
+       ok1(WIFEXITED(status));
+       ok1(WEXITSTATUS(status) < sizeof(d->buf));
+
+       /* This one shouldn't time out. */
+       d->state = 0;
+       d->timed_out = false;
+       d->timeout_usec = 500000;
+       fflush(stdout);
+
+       if (!fork()) {
+               int i;
+
+               io_close_listener(l);
+               fd = socket(addrinfo->ai_family, addrinfo->ai_socktype,
+                           addrinfo->ai_protocol);
+               if (fd < 0)
+                       exit(1);
+               if (connect(fd, addrinfo->ai_addr, addrinfo->ai_addrlen) != 0)
+                       exit(2);
+               signal(SIGPIPE, SIG_IGN);
+               usleep(100000);
+               for (i = 0; i < strlen("hellothere"); i++) {
+                       if (write(fd, "hellothere" + i, 1) != 1)
+                               break;
+               }
+               close(fd);
+               freeaddrinfo(addrinfo);
+               free(d);
+               exit(i);
+       }
+       ok1(io_loop() == d);
+       ok1(d->state == 3);
+       ok1(d->timed_out == false);
+       ok1(wait(&status));
+       ok1(WIFEXITED(status));
+       ok1(WEXITSTATUS(status) >= sizeof(d->buf));
+
+       io_close_listener(l);
+       freeaddrinfo(addrinfo);
+
+       /* We should have tested each one at least once! */
+       ok1(realloc_count);
+       ok1(alloc_count);
+       ok1(free_count);
+
+       ok1(free_count < alloc_count);
+       freefn(d);
+       ok1(free_count == alloc_count);
+
+       return exit_status();
+}