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[wpiutil] jni_util: Add JSpan and CriticalJSpan (#5554)

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These replace JArrayRef et al and support statically sized arrays similar to std::span.
This commit is contained in:
Joseph Eng
2023-08-24 00:02:56 -07:00
committed by GitHub
parent 8f3d6a1d4b
commit 2e4ad35e36
19 changed files with 333 additions and 317 deletions
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10
hal/src/main/native/cpp/jni/DMAJNI.cpp
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@@ -5,12 +5,15 @@
#include <algorithm>
#include <cstring>
#include <wpi/jni_util.h>
#include "HALUtil.h"
#include "edu_wpi_first_hal_DMAJNI.h"
#include "hal/DMA.h"
#include "hal/handles/HandlesInternal.h"
using namespace hal;
using namespace wpi::java;
namespace hal {
bool GetEncoderBaseHandle(HAL_EncoderHandle handle,
@@ -312,20 +315,17 @@ Java_edu_wpi_first_hal_DMAJNI_readDMA
env->SetIntArrayRegion(buf, 0, dmaSample.captureSize,
reinterpret_cast<jint*>(dmaSample.readBuffer));
int32_t* nativeArr =
static_cast<int32_t*>(env->GetPrimitiveArrayCritical(store, nullptr));
CriticalJSpan<jint> nativeArr{env, store};
std::copy_n(
dmaSample.channelOffsets,
sizeof(dmaSample.channelOffsets) / sizeof(dmaSample.channelOffsets[0]),
nativeArr);
nativeArr.data());
nativeArr[22] = static_cast<int32_t>(dmaSample.captureSize);
nativeArr[23] = static_cast<int32_t>(dmaSample.triggerChannels);
nativeArr[24] = remaining;
nativeArr[25] = readStatus;
env->ReleasePrimitiveArrayCritical(store, nativeArr, JNI_ABORT);
return dmaSample.timeStamp;
}