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memory leak in JNI write functions fixed

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git-svn-id: https://svn.code.sf.net/p/libusbjava/code/trunk@270 94ad28fe-ef68-46b1-9651-e7ae4fcf1c4c
This commit is contained in:
spandi
2008-12-20 08:44:46 +00:00
parent 7c6ebbe8fa
commit fae4615b79
5 changed files with 49 additions and 41 deletions
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69
LibusbJava/LibusbJava.cpp
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@@ -1,4 +1,4 @@
/*
/*
* Java libusb wrapper
* Copyright (c) 2005-2006 Andreas Schl<68>pfer <spandi at users.sourceforge.net>
*
@@ -135,9 +135,9 @@ JNIEXPORT jint JNICALL Java_ch_ntb_usb_LibusbJava_usb_1find_1devices
JNIEXPORT jobject JNICALL Java_ch_ntb_usb_LibusbJava_usb_1get_1busses
(JNIEnv *env, jclass obj)
{
clearLibusbJavaError();
// only load class, method and field ID references once
if (!java_references_loaded) {
// find classes and field ids
@@ -159,7 +159,7 @@ JNIEXPORT jobject JNICALL Java_ch_ntb_usb_LibusbJava_usb_1get_1busses
if (usb_devClazz == NULL) { return NULL; /* exception thrown */ }
usb_devMid = env->GetMethodID(usb_devClazz, "<init>","()V");
if (usb_devMid == NULL) { return NULL; }
usb_devFID_next = env->GetFieldID(usb_devClazz, "next", "Lch/ntb/usb/Usb_Device;");
usb_devFID_prev = env->GetFieldID(usb_devClazz, "prev", "Lch/ntb/usb/Usb_Device;");
usb_devFID_filename = env->GetFieldID(usb_devClazz, "filename", "Ljava/lang/String;");
@@ -268,7 +268,7 @@ JNIEXPORT jobject JNICALL Java_ch_ntb_usb_LibusbJava_usb_1get_1busses
busses = usb_get_busses();
bus = busses;
if (!bus){
return NULL;
return NULL;
}
// objects
@@ -276,9 +276,9 @@ JNIEXPORT jobject JNICALL Java_ch_ntb_usb_LibusbJava_usb_1get_1busses
main_usb_devObj, usb_devObj, usb_devObj_next, usb_devObj_prev, \
usb_devDescObj, usb_confDescObj, usb_intObj, usb_intDescObj, \
usb_epDescObj;
jobjectArray usb_confDescObjArray, usb_intObjArray, usb_intDescObjArray, usb_epDescObjArray;
usb_busObj = NULL;
usb_busObj_prev = NULL;
main_usb_busObj = NULL;
@@ -301,7 +301,7 @@ JNIEXPORT jobject JNICALL Java_ch_ntb_usb_LibusbJava_usb_1get_1busses
}
main_usb_busObj = usb_busObj;
}
// fill the fields of the object
usb_busObj_next = NULL;
if (bus->next){
@@ -315,12 +315,12 @@ JNIEXPORT jobject JNICALL Java_ch_ntb_usb_LibusbJava_usb_1get_1busses
env->SetObjectField(usb_busObj, usb_busFID_prev, usb_busObj_prev);
env->SetObjectField(usb_busObj, usb_busFID_dirname, env->NewStringUTF(bus->dirname));
env->SetLongField(usb_busObj, usb_busFID_location, bus->location);
dev = bus->devices;
usb_devObj = NULL;
usb_devObj_prev = NULL;
main_usb_devObj = NULL;
while (dev){
#ifdef DEBUGON
printf("\tusb_get_busses: dev %x (4)\n", dev);
@@ -516,9 +516,9 @@ JNIEXPORT jobject JNICALL Java_ch_ntb_usb_LibusbJava_usb_1get_1busses
}
env->SetObjectField(usb_intObj, usb_intFID_altsetting, usb_intDescObjArray);
}
env->SetObjectField(usb_confDescObj, usb_confDescFID_interface_, usb_intObjArray);
}
env->SetObjectField(usb_confDescObj, usb_confDescFID_interface_, usb_intObjArray);
}
env->SetObjectField(usb_devObj, usb_devFID_config, usb_confDescObjArray);
@@ -528,14 +528,14 @@ JNIEXPORT jobject JNICALL Java_ch_ntb_usb_LibusbJava_usb_1get_1busses
}
env->SetObjectField(usb_busObj, usb_busFID_devices, main_usb_devObj);
env->SetObjectField(usb_busObj, usb_busFID_root_dev, main_usb_devObj);
usb_busObj_prev = usb_busObj;
usb_busObj = usb_busObj_next;
bus = bus->next;
}
#ifdef DEBUGON
printf("usb_get_busses: done\n");
printf("usb_get_busses: done\n");
#endif
return main_usb_busObj;
}
@@ -553,12 +553,12 @@ JNIEXPORT jlong JNICALL Java_ch_ntb_usb_LibusbJava_usb_1open
setLibusbJavaError("shared library error: busses is null");
return 0;
}
unsigned char devnum = env->GetByteField(dev, usb_devFID_devnum);
struct usb_device *usb_device_cmp;
jlong usb_device_cmp_addr = env->GetLongField(dev, usb_devFID_devStructAddr);
struct usb_bus *tmpBus;
for (tmpBus = busses; tmpBus; tmpBus = tmpBus->next) {
struct usb_device *device;
for (device = tmpBus->devices; device; device = device->next) {
@@ -665,9 +665,10 @@ JNIEXPORT jint JNICALL Java_ch_ntb_usb_LibusbJava_usb_1control_1msg
{
clearLibusbJavaError();
jbyte *bytes = env->GetByteArrayElements(jbytes, NULL);
int retVal = usb_control_msg((usb_dev_handle *) dev_handle, requesttype, request, value, index, (char *) bytes, size, timeout);
int num_bytes = usb_control_msg((usb_dev_handle *) dev_handle, requesttype, request, value, index, (char *) bytes, size, timeout);
env->SetByteArrayRegion(jbytes, 0, size, bytes);
return retVal;
env->ReleaseByteArrayElements(jbytes, bytes, 0);
return num_bytes;
}
/*
@@ -746,7 +747,9 @@ JNIEXPORT jint JNICALL Java_ch_ntb_usb_LibusbJava_usb_1bulk_1write
{
clearLibusbJavaError();
jbyte *bytes = env->GetByteArrayElements(jbytes, NULL);
return usb_bulk_write((usb_dev_handle *) dev_handle, ep, (char *) bytes, size, timeout);
int num_bytes = usb_bulk_write((usb_dev_handle *) dev_handle, ep, (char *) bytes, size, timeout);
env->ReleaseByteArrayElements(jbytes, bytes, 0);
return num_bytes;
}
/*
@@ -759,11 +762,11 @@ JNIEXPORT jint JNICALL Java_ch_ntb_usb_LibusbJava_usb_1bulk_1read
{
clearLibusbJavaError();
char *bytes = (char *) malloc(size * sizeof(char));
int retVal = usb_bulk_read((usb_dev_handle *) dev_handle, ep, bytes, size, timeout);
if (!bytes) { return retVal; }
int num_bytes = usb_bulk_read((usb_dev_handle *) dev_handle, ep, bytes, size, timeout);
if (!bytes) { return num_bytes; }
env->SetByteArrayRegion(jbytes, 0, size, (jbyte *) bytes);
free(bytes);
return retVal;
return num_bytes;
}
/*
@@ -776,7 +779,9 @@ JNIEXPORT jint JNICALL Java_ch_ntb_usb_LibusbJava_usb_1interrupt_1write
{
clearLibusbJavaError();
jbyte *bytes = env->GetByteArrayElements(jbytes, NULL);
return usb_interrupt_write((usb_dev_handle *) dev_handle, ep, (char *) bytes, size, timeout);
int num_bytes = usb_interrupt_write((usb_dev_handle *) dev_handle, ep, (char *) bytes, size, timeout);
env->ReleaseByteArrayElements(jbytes, bytes, 0);
return num_bytes;
}
/*
@@ -789,11 +794,11 @@ JNIEXPORT jint JNICALL Java_ch_ntb_usb_LibusbJava_usb_1interrupt_1read
{
clearLibusbJavaError();
char *bytes = (char *) malloc(size * sizeof(char));
int retVal = usb_interrupt_read((usb_dev_handle *) dev_handle, ep, bytes, size, timeout);
if (!bytes) { return retVal; }
int num_bytes = usb_interrupt_read((usb_dev_handle *) dev_handle, ep, bytes, size, timeout);
if (!bytes) { return num_bytes; }
env->SetByteArrayRegion(jbytes, 0, size, (jbyte *) bytes);
free(bytes);
return retVal;
return num_bytes;
}
/*
@@ -803,7 +808,7 @@ JNIEXPORT jint JNICALL Java_ch_ntb_usb_LibusbJava_usb_1interrupt_1read
*/
JNIEXPORT jstring JNICALL Java_ch_ntb_usb_LibusbJava_usb_1strerror
(JNIEnv *env, jclass obj){
char *str;
// check for LibusbJava specific errors first
if (libusbJavaError != NULL) {
@@ -812,10 +817,10 @@ JNIEXPORT jstring JNICALL Java_ch_ntb_usb_LibusbJava_usb_1strerror
} else {
str = usb_strerror();
}
return env->NewStringUTF(str);
}
/*
* Class: ch_ntb_usb_LibusbJava
* Method: usb_error_no
@@ -823,7 +828,7 @@ JNIEXPORT jstring JNICALL Java_ch_ntb_usb_LibusbJava_usb_1strerror
*/
JNIEXPORT jint JNICALL Java_ch_ntb_usb_LibusbJava_usb_1error_1no
(JNIEnv *env, jclass obj, jint java_error_no){
switch (java_error_no) {
case 0:
return 0;