/*
* Exercise several of the atomic ops.
*/
static void doAtomicTest(int num) {
int addVal = (num & 0x01) + 1;
int i;
for (i = 0; i < ITERATION_COUNT; i++) {
if (USE_ATOMIC) {
android_atomic_inc(&incTest);
android_atomic_dec(&decTest);
android_atomic_add(addVal, &addTest);
int val;
do {
val = casTest;
} while (android_atomic_release_cas(val, val + 3, &casTest) != 0);
do {
val = casTest;
} while (android_atomic_acquire_cas(val, val - 1, &casTest) != 0);
int64_t wval;
do {
wval = dvmQuasiAtomicRead64(&wideCasTest);
} while (dvmQuasiAtomicCas64(wval,
wval + 0x0000002000000001LL, &wideCasTest) != 0);
do {
wval = dvmQuasiAtomicRead64(&wideCasTest);
} while (dvmQuasiAtomicCas64(wval,
wval - 0x0000002000000001LL, &wideCasTest) != 0);
} else {
incr();
decr();
add(addVal);
int val;
do {
val = casTest;
} while (compareAndSwap(val, val + 3, &casTest) != 0);
do {
val = casTest;
} while (compareAndSwap(val, val - 1, &casTest) != 0);
int64_t wval;
do {
wval = wideCasTest;
} while (compareAndSwapWide(wval,
wval + 0x0000002000000001LL, &wideCasTest) != 0);
do {
wval = wideCasTest;
} while (compareAndSwapWide(wval,
wval - 0x0000002000000001LL, &wideCasTest) != 0);
}
}
}
/*
* public native long getLongVolatile(Object obj, long offset);
*/
static void Dalvik_sun_misc_Unsafe_getLongVolatile(const u4 *args,
JValue *pResult) {
// We ignore the this pointer in args[0].
Object *obj = (Object *) args[1];
s8 offset = GET_ARG_LONG(args, 2);
volatile int64_t *address = (volatile int64_t *) (((u1 *) obj) + offset);
assert((offset & 7) == 0);
RETURN_LONG(dvmQuasiAtomicRead64(address));
}
/*
* Return the time, in milliseconds, since the last debugger activity.
*
* Returns -1 if no debugger is attached, or 0 if we're in the middle of
* processing a debugger request.
*/
s8 dvmJdwpLastDebuggerActivity(JdwpState* state)
{
if (!gDvm.debuggerActive) {
LOGD("dvmJdwpLastDebuggerActivity: no active debugger\n");
return -1;
}
s8 last = dvmQuasiAtomicRead64(&state->lastActivityWhen);
/* initializing or in the middle of something? */
if (last == 0) {
LOGV("+++ last=busy\n");
return 0;
}
/* now get the current time */
s8 now = dvmJdwpGetNowMsec();
assert(now > last);
LOGV("+++ debugger interval=%lld\n", now - last);
return now - last;
}
