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#include "rjava.h"
#include <unistd.h>
#ifdef _WIN64
typedef long long ptrlong;
#else
typedef long ptrlong;
#endif
int ipcout;
int resin;
int *rjctrl = 0;
typedef void(callbackfn)(void *);
int RJava_request_lock() {
ptrlong buf[4];
int n;
if (rjctrl && *rjctrl) return 2;
buf[0] = IPCC_LOCK_REQUEST;
write(ipcout, buf, sizeof(ptrlong));
n = read(resin, buf, sizeof(ptrlong));
return (buf[0] == IPCC_LOCK_GRANTED)?1:0;
}
int RJava_clear_lock() {
ptrlong buf[4];
buf[0] = IPCC_CLEAR_LOCK;
write(ipcout, buf, sizeof(ptrlong));
return 1;
}
void RJava_request_callback(callbackfn *fn, void *data) {
ptrlong buf[4];
buf[0] = IPCC_CALL_REQUEST;
buf[1] = (ptrlong) fn;
buf[2] = (ptrlong) data;
write(ipcout, buf, sizeof(ptrlong) * 3);
}
void RJava_setup(int _in, int _out) {
/* ptrlong buf[4]; */
ipcout = _out;
resin = _in;
}
void RJava_init_ctrl() {
ptrlong buf[4];
buf[0] = IPCC_CONTROL_ADDR;
write(ipcout, buf, sizeof(ptrlong));
read(resin, buf, sizeof(ptrlong) * 2);
if (buf[0] == IPCC_CONTROL_ADDR) {
rjctrl= (int*) buf[1];
}
}
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