#ifndef QEMU_GLIB_COMPAT_H
#define QEMU_GLIB_COMPAT_H
-#include <glib.h>
+/* Ask for warnings for anything that was marked deprecated in
+ * the defined version, or before. It is a candidate for rewrite.
+ */
+#define GLIB_VERSION_MIN_REQUIRED GLIB_VERSION_2_48
-/* GLIB version compatibility flags */
-#if !GLIB_CHECK_VERSION(2, 26, 0)
-#define G_TIME_SPAN_SECOND (G_GINT64_CONSTANT(1000000))
-#endif
+/* Ask for warnings if code tries to use function that did not
+ * exist in the defined version. These risk breaking builds
+ */
+#define GLIB_VERSION_MAX_ALLOWED GLIB_VERSION_2_48
-#if !GLIB_CHECK_VERSION(2, 28, 0)
-static inline gint64 qemu_g_get_monotonic_time(void)
-{
- /* g_get_monotonic_time() is best-effort so we can use the wall clock as a
- * fallback.
- */
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
- GTimeVal time;
- g_get_current_time(&time);
+#include <glib.h>
- return time.tv_sec * G_TIME_SPAN_SECOND + time.tv_usec;
-}
-/* work around distro backports of this interface */
-#define g_get_monotonic_time() qemu_g_get_monotonic_time()
-#endif
+/*
+ * Note that because of the GLIB_VERSION_MAX_ALLOWED constant above, allowing
+ * use of functions from newer GLib via this compat header needs a little
+ * trickery to prevent warnings being emitted.
+ *
+ * Consider a function from newer glib-X.Y that we want to use
+ *
+ * int g_foo(const char *wibble)
+ *
+ * We must define a static inline function with the same signature that does
+ * what we need, but with a "_qemu" suffix e.g.
+ *
+ * static inline void g_foo_qemu(const char *wibble)
+ * {
+ * #if GLIB_CHECK_VERSION(X, Y, 0)
+ * g_foo(wibble)
+ * #else
+ * g_something_equivalent_in_older_glib(wibble);
+ * #endif
+ * }
+ *
+ * The #pragma at the top of this file turns off -Wdeprecated-declarations,
+ * ensuring this wrapper function impl doesn't trigger the compiler warning
+ * about using too new glib APIs. Finally we can do
+ *
+ * #define g_foo(a) g_foo_qemu(a)
+ *
+ * So now the code elsewhere in QEMU, which *does* have the
+ * -Wdeprecated-declarations warning active, can call g_foo(...) as normal,
+ * without generating warnings.
+ */
-#ifdef _WIN32
+#if defined(_WIN32) && !GLIB_CHECK_VERSION(2, 50, 0)
/*
* g_poll has a problem on Windows when using
* timeouts < 10ms, so use wrapper.
gint g_poll_fixed(GPollFD *fds, guint nfds, gint timeout);
#endif
-#if !GLIB_CHECK_VERSION(2, 30, 0)
-/* Not a 100% compatible implementation, but good enough for most
- * cases. Placeholders are only supported at the end of the
- * template. */
-static inline gchar *qemu_g_dir_make_tmp(gchar const *tmpl, GError **error)
-{
- gchar *path = g_build_filename(g_get_tmp_dir(), tmpl ?: ".XXXXXX", NULL);
-
- if (mkdtemp(path) != NULL) {
- return path;
- }
- /* Error occurred, clean up. */
- g_set_error(error, G_FILE_ERROR, g_file_error_from_errno(errno),
- "mkdtemp() failed");
- g_free(path);
- return NULL;
-}
-#define g_dir_make_tmp(tmpl, error) qemu_g_dir_make_tmp(tmpl, error)
-#endif /* glib 2.30 */
-
-#if !GLIB_CHECK_VERSION(2, 31, 0)
-/* before glib-2.31, GMutex and GCond was dynamic-only (there was a separate
- * GStaticMutex, but it didn't work with condition variables).
- *
- * Our implementation uses GOnce to fake a static implementation that does
- * not require separate initialization.
- * We need to rename the types to avoid passing our CompatGMutex/CompatGCond
- * by mistake to a function that expects GMutex/GCond. However, for ease
- * of use we keep the GLib function names. GLib uses macros for the
- * implementation, we use inline functions instead and undefine the macros.
- */
-
-typedef struct CompatGMutex {
- GOnce once;
-} CompatGMutex;
-
-typedef struct CompatGCond {
- GOnce once;
-} CompatGCond;
-
-static inline gpointer do_g_mutex_new(gpointer unused)
-{
- return (gpointer) g_mutex_new();
-}
-
-static inline void g_mutex_init(CompatGMutex *mutex)
-{
- mutex->once = (GOnce) G_ONCE_INIT;
-}
-
-static inline void g_mutex_clear(CompatGMutex *mutex)
-{
- g_assert(mutex->once.status != G_ONCE_STATUS_PROGRESS);
- if (mutex->once.retval) {
- g_mutex_free((GMutex *) mutex->once.retval);
- }
- mutex->once = (GOnce) G_ONCE_INIT;
-}
-
-static inline void (g_mutex_lock)(CompatGMutex *mutex)
-{
- g_once(&mutex->once, do_g_mutex_new, NULL);
- g_mutex_lock((GMutex *) mutex->once.retval);
-}
-#undef g_mutex_lock
-
-static inline gboolean (g_mutex_trylock)(CompatGMutex *mutex)
-{
- g_once(&mutex->once, do_g_mutex_new, NULL);
- return g_mutex_trylock((GMutex *) mutex->once.retval);
-}
-#undef g_mutex_trylock
-
-
-static inline void (g_mutex_unlock)(CompatGMutex *mutex)
-{
- g_mutex_unlock((GMutex *) mutex->once.retval);
-}
-#undef g_mutex_unlock
-
-static inline gpointer do_g_cond_new(gpointer unused)
-{
- return (gpointer) g_cond_new();
-}
-
-static inline void g_cond_init(CompatGCond *cond)
-{
- cond->once = (GOnce) G_ONCE_INIT;
-}
-
-static inline void g_cond_clear(CompatGCond *cond)
-{
- g_assert(cond->once.status != G_ONCE_STATUS_PROGRESS);
- if (cond->once.retval) {
- g_cond_free((GCond *) cond->once.retval);
- }
- cond->once = (GOnce) G_ONCE_INIT;
-}
-
-static inline void (g_cond_wait)(CompatGCond *cond, CompatGMutex *mutex)
-{
- g_assert(mutex->once.status != G_ONCE_STATUS_PROGRESS);
- g_once(&cond->once, do_g_cond_new, NULL);
- g_cond_wait((GCond *) cond->once.retval, (GMutex *) mutex->once.retval);
-}
-#undef g_cond_wait
-
-static inline void (g_cond_broadcast)(CompatGCond *cond)
-{
- g_once(&cond->once, do_g_cond_new, NULL);
- g_cond_broadcast((GCond *) cond->once.retval);
-}
-#undef g_cond_broadcast
-
-static inline void (g_cond_signal)(CompatGCond *cond)
-{
- g_once(&cond->once, do_g_cond_new, NULL);
- g_cond_signal((GCond *) cond->once.retval);
-}
-#undef g_cond_signal
-
-static inline gboolean (g_cond_timed_wait)(CompatGCond *cond,
- CompatGMutex *mutex,
- GTimeVal *time)
-{
- g_assert(mutex->once.status != G_ONCE_STATUS_PROGRESS);
- g_once(&cond->once, do_g_cond_new, NULL);
- return g_cond_timed_wait((GCond *) cond->once.retval,
- (GMutex *) mutex->once.retval, time);
-}
-#undef g_cond_timed_wait
-
-/* This is not a macro, because it didn't exist until 2.32. */
-static inline gboolean g_cond_wait_until(CompatGCond *cond, CompatGMutex *mutex,
- gint64 end_time)
-{
- GTimeVal time;
-
- /* Convert from monotonic to CLOCK_REALTIME. */
- end_time -= g_get_monotonic_time();
- g_get_current_time(&time);
- end_time += time.tv_sec * G_TIME_SPAN_SECOND + time.tv_usec;
-
- time.tv_sec = end_time / G_TIME_SPAN_SECOND;
- time.tv_usec = end_time % G_TIME_SPAN_SECOND;
- return g_cond_timed_wait(cond, mutex, &time);
-}
-
-/* before 2.31 there was no g_thread_new() */
-static inline GThread *g_thread_new(const char *name,
- GThreadFunc func, gpointer data)
-{
- GThread *thread = g_thread_create(func, data, TRUE, NULL);
- if (!thread) {
- g_error("creating thread");
- }
- return thread;
-}
-#else
-#define CompatGMutex GMutex
-#define CompatGCond GCond
-#endif /* glib 2.31 */
-
-#if !GLIB_CHECK_VERSION(2, 32, 0)
-/* Beware, function returns gboolean since 2.39.2, see GLib commit 9101915 */
-static inline void g_hash_table_add(GHashTable *hash_table, gpointer key)
-{
- g_hash_table_replace(hash_table, key, key);
-}
-#endif
-
-#ifndef g_assert_true
-#define g_assert_true(expr) \
- do { \
- if (G_LIKELY(expr)) { \
- } else { \
- g_assertion_message(G_LOG_DOMAIN, __FILE__, __LINE__, G_STRFUNC, \
- "'" #expr "' should be TRUE"); \
- } \
- } while (0)
-#endif
-
-#ifndef g_assert_false
-#define g_assert_false(expr) \
- do { \
- if (G_LIKELY(!(expr))) { \
- } else { \
- g_assertion_message(G_LOG_DOMAIN, __FILE__, __LINE__, G_STRFUNC, \
- "'" #expr "' should be FALSE"); \
- } \
- } while (0)
-#endif
-
-#ifndef g_assert_null
-#define g_assert_null(expr) \
- do { \
- if (G_LIKELY((expr) == NULL)) { \
- } else { \
- g_assertion_message(G_LOG_DOMAIN, __FILE__, __LINE__, G_STRFUNC, \
- "'" #expr "' should be NULL"); \
- } \
- } while (0)
-#endif
-
-#ifndef g_assert_nonnull
-#define g_assert_nonnull(expr) \
- do { \
- if (G_LIKELY((expr) != NULL)) { \
- } else { \
- g_assertion_message(G_LOG_DOMAIN, __FILE__, __LINE__, G_STRFUNC, \
- "'" #expr "' should not be NULL"); \
- } \
- } while (0)
-#endif
-
-#ifndef g_assert_cmpmem
-#define g_assert_cmpmem(m1, l1, m2, l2) \
- do { \
- gconstpointer __m1 = m1, __m2 = m2; \
- int __l1 = l1, __l2 = l2; \
- if (__l1 != __l2) { \
- g_assertion_message_cmpnum( \
- G_LOG_DOMAIN, __FILE__, __LINE__, G_STRFUNC, \
- #l1 " (len(" #m1 ")) == " #l2 " (len(" #m2 "))", __l1, "==", \
- __l2, 'i'); \
- } else if (memcmp(__m1, __m2, __l1) != 0) { \
- g_assertion_message(G_LOG_DOMAIN, __FILE__, __LINE__, G_STRFUNC, \
- "assertion failed (" #m1 " == " #m2 ")"); \
- } \
- } while (0)
-#endif
-
-#if !GLIB_CHECK_VERSION(2, 28, 0)
-static inline void g_list_free_full(GList *list, GDestroyNotify free_func)
-{
- GList *l;
-
- for (l = list; l; l = l->next) {
- free_func(l->data);
- }
-
- g_list_free(list);
-}
-
-static inline void g_slist_free_full(GSList *list, GDestroyNotify free_func)
-{
- GSList *l;
-
- for (l = list; l; l = l->next) {
- free_func(l->data);
- }
-
- g_slist_free(list);
-}
-#endif
+#pragma GCC diagnostic pop
#endif
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