archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-08-28 23:34:52 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8246095: Tweaks to memory access API

Browse source 
Add more user friendly API points to the foreign memory acesss API

Reviewed-by: chegar, psandoz
This commit is contained in:
Chris Hegarty 2020-06-03 16:50:03 +01:00 • committed by Maurizio Cimadamore
parent eec7750e55
commit f1e1cb7055
25 changed files with 1634 additions and 185 deletions
Download patch file Download diff file Expand all files Collapse all files

59
test/jdk/java/foreign/TestAdaptVarHandles.java
View file

@ -49,6 +49,9 @@ public class TestAdaptVarHandles {
static MethodHandle S2I;
static MethodHandle I2S;
static MethodHandle CTX_I2S;
static MethodHandle O2I;
static MethodHandle I2O;
static MethodHandle S2L;
static MethodHandle S2L_EX;
static MethodHandle S2I_EX;
@ -61,6 +64,10 @@ public class TestAdaptVarHandles {
try {
S2I = MethodHandles.lookup().findStatic(TestAdaptVarHandles.class, "stringToInt", MethodType.methodType(int.class, String.class));
I2S = MethodHandles.lookup().findStatic(TestAdaptVarHandles.class, "intToString", MethodType.methodType(String.class, int.class));
CTX_I2S = MethodHandles.lookup().findStatic(TestAdaptVarHandles.class, "ctxIntToString",
MethodType.methodType(String.class, String.class, String.class, int.class));
O2I = MethodHandles.explicitCastArguments(S2I, MethodType.methodType(int.class, Object.class));
I2O = MethodHandles.explicitCastArguments(I2S, MethodType.methodType(Object.class, int.class));
S2L = MethodHandles.lookup().findStatic(TestAdaptVarHandles.class, "stringToLong", MethodType.methodType(long.class, String.class));
S2L_EX = MethodHandles.lookup().findStatic(TestAdaptVarHandles.class, "stringToLongException", MethodType.methodType(long.class, String.class));
BASE_ADDR = MethodHandles.lookup().findStatic(TestAdaptVarHandles.class, "baseAddress", MethodType.methodType(MemoryAddress.class, MemorySegment.class));
@ -98,6 +105,46 @@ public class TestAdaptVarHandles {
assertEquals(value, "42");
}
@Test
public void testFilterValueComposite() throws Throwable {
ValueLayout layout = MemoryLayouts.JAVA_INT;
MemorySegment segment = MemorySegment.allocateNative(layout);
VarHandle intHandle = layout.varHandle(int.class);
MethodHandle CTX_S2I = MethodHandles.dropArguments(S2I, 0, String.class, String.class);
VarHandle i2SHandle = MemoryHandles.filterValue(intHandle, CTX_S2I, CTX_I2S);
i2SHandle = MemoryHandles.insertCoordinates(i2SHandle, 1, "a", "b");
i2SHandle.set(segment.baseAddress(), "1");
String oldValue = (String)i2SHandle.getAndAdd(segment.baseAddress(), "42");
assertEquals(oldValue, "ab1");
String value = (String)i2SHandle.get(segment.baseAddress());
assertEquals(value, "ab43");
boolean swapped = (boolean)i2SHandle.compareAndSet(segment.baseAddress(), "43", "12");
assertTrue(swapped);
oldValue = (String)i2SHandle.compareAndExchange(segment.baseAddress(), "12", "42");
assertEquals(oldValue, "ab12");
value = (String)i2SHandle.toMethodHandle(VarHandle.AccessMode.GET).invokeExact(segment.baseAddress());
assertEquals(value, "ab42");
}
@Test
public void testFilterValueLoose() throws Throwable {
ValueLayout layout = MemoryLayouts.JAVA_INT;
MemorySegment segment = MemorySegment.allocateNative(layout);
VarHandle intHandle = layout.varHandle(int.class);
VarHandle i2SHandle = MemoryHandles.filterValue(intHandle, O2I, I2O);
i2SHandle.set(segment.baseAddress(), "1");
String oldValue = (String)i2SHandle.getAndAdd(segment.baseAddress(), "42");
assertEquals(oldValue, "1");
String value = (String)i2SHandle.get(segment.baseAddress());
assertEquals(value, "43");
boolean swapped = (boolean)i2SHandle.compareAndSet(segment.baseAddress(), "43", "12");
assertTrue(swapped);
oldValue = (String)i2SHandle.compareAndExchange(segment.baseAddress(), "12", "42");
assertEquals(oldValue, "12");
value = (String)(Object)i2SHandle.toMethodHandle(VarHandle.AccessMode.GET).invokeExact(segment.baseAddress());
assertEquals(value, "42");
}
@Test(expectedExceptions = NullPointerException.class)
public void testBadFilterNullTarget() {
MemoryHandles.filterValue(null, S2I, I2S);
@ -133,6 +180,14 @@ public class TestAdaptVarHandles {
MemoryHandles.filterValue(intHandle, S2I, I2S.bindTo(42));
}
@Test(expectedExceptions = IllegalArgumentException.class)
public void testBadFilterBoxPrefixCoordinates() {
VarHandle intHandle = MemoryLayouts.JAVA_INT.varHandle(int.class);
MemoryHandles.filterValue(intHandle,
MethodHandles.dropArguments(S2I, 1, int.class),
MethodHandles.dropArguments(I2S, 1, long.class));
}
@Test(expectedExceptions = IllegalArgumentException.class)
public void testBadFilterBoxException() {
VarHandle intHandle = MemoryLayouts.JAVA_INT.varHandle(int.class);
@ -461,4 +516,8 @@ public class TestAdaptVarHandles {
}
static void void_filter(String s) { }
static String ctxIntToString(String a, String b, int i) {
return a + b + String.valueOf(i);
}
}