Greg
86e724cc8c
scan(), stopScan(), connectPeripheral(), cancelConnection(), and DiscoverServices().
55 lines
985 B
Go
55 lines
985 B
Go
package ble
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/*
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#cgo LDFLAGS: -landroid -llog
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#import "jni_android.h"
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*/
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import "C"
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import (
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"errors"
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"fmt"
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"log"
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"runtime"
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"unsafe"
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)
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var theJVM *C.JavaVM
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type JNIEnv = C.JNIEnv
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func setJVM(jvm uintptr) {
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log.Printf("set theJVM")
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theJVM = (*C.JavaVM)(unsafe.Pointer(jvm))
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if theJVM == nil {
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log.Printf("theJVM is nil!")
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} else {
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log.Printf("theJVM is not nil")
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}
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}
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func runInJVM(f func(env *C.JNIEnv)) {
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runtime.LockOSThread()
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defer runtime.UnlockOSThread()
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var env *C.JNIEnv
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var detach bool
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//log.Printf("RunInJVM(): theJVM = %d", uintptr(unsafe.Pointer(theJVM)))
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if res := C.GetEnv(theJVM, &env, C.JNI_VERSION_1_6); res != C.JNI_OK {
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if res != C.JNI_EDETACHED {
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panic(fmt.Errorf("JNI GetEnv failed with error %d", res))
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}
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if C.AttachCurrentThread(theJVM, &env, nil) != C.JNI_OK {
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panic(errors.New("runInJVM: AttachCurrentThread failed"))
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}
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detach = true
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}
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if detach {
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defer func() {
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C.DetachCurrentThread(theJVM)
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}()
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}
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f(env)
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}
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