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* dbus/dbus-sysdeps-unix.c: moved _dbus_atomic_inc/dec()

Browse source 
from dbus/dbus-sysdeps.c, windows version of _dbus_atomic_inc/dec()
is in dbus-sysdeps-win.c (not in this patch).

* dbus/dbus-sysdeps.h: DBusAtomic::value is long on windows to fit
with InterlockedInc/Decrement. - Patches from Christian Ehrlicher
This commit is contained in:
Ralf Habacker 2006-12-31 12:16:04 +00:00
parent 572ae0a7d4
commit 2dae3a600b
4 changed files with 61 additions and 47 deletions
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10
ChangeLog
View file

@ -1,3 +1,13 @@
2006-12-31 Ralf Habacker <ralf.habacker@freenet.de>
* dbus/dbus-sysdeps-unix.c: moved _dbus_atomic_inc/dec()
from dbus/dbus-sysdeps.c, windows version of _dbus_atomic_inc/dec()
is in dbus-sysdeps-win.c (not in this patch).
* dbus/dbus-sysdeps.h: DBusAtomic::value is long on windows to fit
with InterlockedInc/Decrement.
- Patches from Christian Ehrlicher
2006-12-31 Ralf Habacker <ralf.habacker@freenet.de>
* tools/dbus-send.c, tools/dbus-monitor.c: win32 compile fix.

47
dbus/dbus-sysdeps-unix.c
View file

@ -1428,6 +1428,53 @@ _dbus_getuid (void)
return getuid ();
}
/**
* Atomically increments an integer
*
* @param atomic pointer to the integer to increment
* @returns the value before incrementing
*
* @todo implement arch-specific faster atomic ops
*/
dbus_int32_t
_dbus_atomic_inc (DBusAtomic *atomic)
{
#ifdef DBUS_USE_ATOMIC_INT_486
return atomic_exchange_and_add (atomic, 1);
#else
dbus_int32_t res;
_DBUS_LOCK (atomic);
res = atomic->value;
atomic->value += 1;
_DBUS_UNLOCK (atomic);
return res;
#endif
}
/**
* Atomically decrement an integer
*
* @param atomic pointer to the integer to decrement
* @returns the value before decrementing
*
* @todo implement arch-specific faster atomic ops
*/
dbus_int32_t
_dbus_atomic_dec (DBusAtomic *atomic)
{
#ifdef DBUS_USE_ATOMIC_INT_486
return atomic_exchange_and_add (atomic, -1);
#else
dbus_int32_t res;
_DBUS_LOCK (atomic);
res = atomic->value;
atomic->value -= 1;
_DBUS_UNLOCK (atomic);
return res;
#endif
}
#ifdef DBUS_BUILD_TESTS
/** Gets our GID
* @returns process GID

47
dbus/dbus-sysdeps.c
View file

@ -662,53 +662,6 @@ atomic_exchange_and_add (DBusAtomic *atomic,
}
#endif
/**
* Atomically increments an integer
*
* @param atomic pointer to the integer to increment
* @returns the value before incrementing
*
* @todo implement arch-specific faster atomic ops
*/
dbus_int32_t
_dbus_atomic_inc (DBusAtomic *atomic)
{
#ifdef DBUS_USE_ATOMIC_INT_486
return atomic_exchange_and_add (atomic, 1);
#else
dbus_int32_t res;
_DBUS_LOCK (atomic);
res = atomic->value;
atomic->value += 1;
_DBUS_UNLOCK (atomic);
return res;
#endif
}
/**
* Atomically decrement an integer
*
* @param atomic pointer to the integer to decrement
* @returns the value before decrementing
*
* @todo implement arch-specific faster atomic ops
*/
dbus_int32_t
_dbus_atomic_dec (DBusAtomic *atomic)
{
#ifdef DBUS_USE_ATOMIC_INT_486
return atomic_exchange_and_add (atomic, -1);
#else
dbus_int32_t res;
_DBUS_LOCK (atomic);
res = atomic->value;
atomic->value -= 1;
_DBUS_UNLOCK (atomic);
return res;
#endif
}
void
_dbus_generate_pseudorandom_bytes_buffer (char *buffer,
int n_bytes)

4
dbus/dbus-sysdeps.h
View file

@ -229,7 +229,11 @@ typedef struct DBusAtomic DBusAtomic;
*/
struct DBusAtomic
{
#ifdef DBUS_WIN
volatile long value; /**< Value of the atomic integer. */
#else
volatile dbus_int32_t value; /**< Value of the atomic integer. */
#endif
};
dbus_int32_t _dbus_atomic_inc (DBusAtomic *atomic);