#include "request.h"
int request_get(int obj, uint32_t ptr, int wait) {
//check if we own the object, if not return -2
//check if a request is pending. if request is being processed, return -3
//if not (busymutex unlocked or request==0) && wait, then wait, else return -1
//if request pending, write it to ptr
// if request is nonblocking and no shm is to be mapped, delete it and unlock objects busymutex
//return 0
}
int request_has(int obj) {
//check if we own the object, if not return -2
//check if a request is pending.
// if being processed, return 2
// if waiting for ack, return 1
// if none (busymutex unlocked or request==0), return 0
}
void request_answer(int obj, uint32_t answer) {
//check if we own the object, if not return
//if no blocking request is being processed (including non-acknowledged waiting requests), return
//set blocking request to finished, and set its answer
//dereference request from object, unlock objects busymutex
}
int request_mapShm(int obj, uint32_t pos, int number) {
//check if we own the object, if not return -2
//if no request is being processes (including non-acknowledged waiting requests), return -3
//check if the requests has shm in parameter [number], if not return -4
//map shm to position
//if request is nonblocking and no more shm is to be mapped, delete request and free object busymutex
//return 0
}
static struct request *mkrequest(int obj, struct thread *requester,
uint32_t func, uint32_t a, uint32_t b, uint32_t c) {
// get object from descriptor id, if none return 0
// waitlock object's busy mutex
// if object cannot answer (owner == 0) return 0
// create request, fill it up, reference it from object
// return request
}
int request(int obj, uint32_t func, uint32_t a, uint32_t b, uint32_t c, uint32_t answerptr) {
//call mkrequest with parameters (requester thread = current thread)
//if returned value is 0, return -1
//sleep until request is handled
//write answer to *answerptr, delete request, return 0
}
int send_msg(int obj, uint32_t func, uint32_t a, uint32_t b, uint32_t c) {
//call mkrequest with parameters (requester thread = 0)
//if returned value is 0, return -1 else return 0
}
