/**
* Internal utility to write to a socket, synchronously.
*
* @param handle the open socket handle
* @param buf the buffer from which to write
* @param len the number of bytes to attempt to write
*
* @return -1 if error, otherwise the number of bytes actually written
*/
static int
utilWrite(
void *handle,
unsigned char *buf,
int len)
{
int status;
int nwritten;
void *context;
status = pcsl_socket_write_start(
handle, buf, len, &nwritten, &context);
if (status == PCSL_NET_SUCCESS) {
return nwritten;
}
if (status == PCSL_NET_WOULDBLOCK) {
if (wait_on_handle(handle, 0)) {
status =
pcsl_socket_write_finish(handle, buf, len, &nwritten, context);
if (status == PCSL_NET_SUCCESS) {
return nwritten;
}
}
}
return -1;
}
static int do_pcsl_write(void *handle, char *buffer, int length) {
void *context;
int nwrite;
int status = pcsl_socket_write_start(
handle, buffer, length, &nwrite, &context);
if (status == PCSL_NET_WOULDBLOCK) {
do {
status = pcsl_socket_write_finish(handle, buffer, length,
&nwrite, context);
} while (status == PCSL_NET_WOULDBLOCK);
}
if (status == PCSL_NET_SUCCESS && nwrite > 0) {
return nwrite;
} else {
return -1;
}
}
/**
* Writes to the open socket connection.
* <p>
* Java declaration:
* <pre>
* write0([BII)I
* </pre>
*
* @param b the buffer of the data to write
* @param off the start offset in array <tt>b</tt>
* at which the data is written.
* @param len the number of bytes to write.
*
* @return the total number of bytes written
*/
KNIEXPORT KNI_RETURNTYPE_INT
Java_com_sun_midp_io_j2me_socket_Protocol_write0(void) {
int length;
int offset;
void *pcslHandle;
int bytesWritten = 0;
int status = PCSL_NET_INVALID;
void *context = NULL;
MidpReentryData* info;
length = (int)KNI_GetParameterAsInt(3);
offset = (int)KNI_GetParameterAsInt(2);
KNI_StartHandles(2);
KNI_DeclareHandle(bufferObject);
KNI_DeclareHandle(thisObject);
KNI_GetThisPointer(thisObject);
KNI_GetParameterAsObject(1, bufferObject);
pcslHandle = (void *)(getMidpSocketProtocolPtr(thisObject)->handle);
REPORT_INFO3(LC_PROTOCOL, "socket::write0 o=%d l=%d fd=%d\n",
offset, length, pcslHandle);
info = (MidpReentryData*)SNI_GetReentryData(NULL);
START_NETWORK_INDICATOR;
if (info == NULL) { /* First invocation */
if (INVALID_HANDLE == pcslHandle) {
KNI_ThrowNew(midpIOException,
"invalid handle during socket::write");
} else {
INC_NETWORK_INDICATOR;
SNI_BEGIN_RAW_POINTERS;
status = pcsl_socket_write_start(pcslHandle,
(char*)&(JavaByteArray(bufferObject)[offset]),
length, &bytesWritten, &context);
SNI_END_RAW_POINTERS;
}
} else { /* Reinvocation after unblocking the thread */
if (INVALID_HANDLE == pcslHandle) {
/* closed by another thread */
KNI_ThrowNew(midpInterruptedIOException,
"Interrupted IO error during socket::read");
DEC_NETWORK_INDICATOR;
} else {
if ((void *)info->descriptor != pcslHandle) {
REPORT_CRIT2(LC_PROTOCOL,
"socket::write Handles mismatched 0x%x != 0x%x\n",
pcslHandle,
info->descriptor);
}
context = info->pResult;
SNI_BEGIN_RAW_POINTERS;
status = pcsl_socket_write_finish(pcslHandle,
(char*)&(JavaByteArray(bufferObject)[offset]),
length, &bytesWritten, context);
SNI_END_RAW_POINTERS;
}
}
if (INVALID_HANDLE != pcslHandle) {
if (status == PCSL_NET_SUCCESS) {
DEC_NETWORK_INDICATOR;
} else {
REPORT_INFO1(LC_PROTOCOL, "socket::write error=%d\n",
(int)pcsl_network_error(pcslHandle));
if (status == PCSL_NET_WOULDBLOCK) {
midp_thread_wait(NETWORK_WRITE_SIGNAL, (int)pcslHandle, context);
} else if (status == PCSL_NET_INTERRUPTED) {
midp_snprintf(gKNIBuffer, KNI_BUFFER_SIZE,
"Interrupted IO error %d during socket::write ",
pcsl_network_error(pcslHandle));
KNI_ThrowNew(midpInterruptedIOException, gKNIBuffer);
DEC_NETWORK_INDICATOR;
} else {
midp_snprintf(gKNIBuffer, KNI_BUFFER_SIZE,
"IOError %d during socket:: write \n",
pcsl_network_error(pcslHandle));
KNI_ThrowNew(midpIOException, gKNIBuffer);
DEC_NETWORK_INDICATOR;
}
}
}
REPORT_INFO1(LC_PROTOCOL, "socket::write0 bytesWritten=%d\n",
bytesWritten);
KNI_EndHandles();
KNI_ReturnInt((jint)bytesWritten);
}