8681dffa91
The next commit will use it. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
238 lines
8.0 KiB
C
238 lines
8.0 KiB
C
/*
|
|
* GLIB Compatibility Functions
|
|
*
|
|
* Copyright IBM, Corp. 2013
|
|
*
|
|
* Authors:
|
|
* Anthony Liguori <aliguori@us.ibm.com>
|
|
* Michael Tokarev <mjt@tls.msk.ru>
|
|
* Paolo Bonzini <pbonzini@redhat.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU GPL, version 2 or later.
|
|
* See the COPYING file in the top-level directory.
|
|
*
|
|
*/
|
|
|
|
#ifndef QEMU_GLIB_COMPAT_H
|
|
#define QEMU_GLIB_COMPAT_H
|
|
|
|
#include <glib.h>
|
|
|
|
/* GLIB version compatibility flags */
|
|
#if !GLIB_CHECK_VERSION(2, 26, 0)
|
|
#define G_TIME_SPAN_SECOND (G_GINT64_CONSTANT(1000000))
|
|
#endif
|
|
|
|
#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.
|
|
*/
|
|
|
|
GTimeVal time;
|
|
g_get_current_time(&time);
|
|
|
|
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
|
|
|
|
#ifdef _WIN32
|
|
/*
|
|
* g_poll has a problem on Windows when using
|
|
* timeouts < 10ms, so use wrapper.
|
|
*/
|
|
#define g_poll(fds, nfds, timeout) g_poll_fixed(fds, nfds, timeout)
|
|
gint g_poll_fixed(GPollFD *fds, guint nfds, gint timeout);
|
|
#endif
|
|
|
|
#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
|
|
|
|
|
|
/* 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
|
|
|
|
#endif
|