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gmain: Add g_steal_fd() to API

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This is basically glnx_steal_fd() from libglnx. We already had two
private implementations of it in GLib.

Signed-off-by: Simon McVittie <smcv@collabora.com>
This commit is contained in:
Simon McVittie
2021-03-22 11:48:10 +00:00
committed by Philip Withnall
parent 46c34ea20f
commit 6c5a227bcc
6 changed files with 69 additions and 23 deletions
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32
glib/tests/mainloop.c
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@@ -21,6 +21,7 @@
*/
#include <glib.h>
#include <glib/gstdio.h>
#include "glib-private.h"
#include <stdio.h>
#include <string.h>
@@ -2066,6 +2067,36 @@ test_maincontext_source_finalization_from_dispatch (gconstpointer user_data)
g_main_context_unref (c);
}
static void
test_steal_fd (void)
{
GError *error = NULL;
gchar *tmpfile = NULL;
int fd = -42;
int borrowed;
int stolen;
g_assert_cmpint (g_steal_fd (&fd), ==, -42);
g_assert_cmpint (fd, ==, -1);
g_assert_cmpint (g_steal_fd (&fd), ==, -1);
g_assert_cmpint (fd, ==, -1);
fd = g_file_open_tmp (NULL, &tmpfile, &error);
g_assert_cmpint (fd, >=, 0);
g_assert_no_error (error);
borrowed = fd;
stolen = g_steal_fd (&fd);
g_assert_cmpint (fd, ==, -1);
g_assert_cmpint (borrowed, ==, stolen);
g_close (g_steal_fd (&stolen), &error);
g_assert_no_error (error);
g_assert_cmpint (stolen, ==, -1);
g_assert_no_errno (remove (tmpfile));
g_free (tmpfile);
}
int
main (int argc, char *argv[])
{
@@ -2111,6 +2142,7 @@ main (int argc, char *argv[])
g_test_add_func ("/mainloop/unix-fd-priority", test_unix_fd_priority);
#endif
g_test_add_func ("/mainloop/nfds", test_nfds);
g_test_add_func ("/mainloop/steal-fd", test_steal_fd);
return g_test_run ();
}