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proposal.c
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proposal.c
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/*
* proposal.c
*
* Created on: Aug 22, 2019
* Author: tonglin
*/
#include <assert.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/time.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "proposal.h"
time_stamp proposal_get_time_usec() {
struct timeval tv;
gettimeofday(&tv, NULL);
return 1000000 * tv.tv_sec + tv.tv_usec;
}
proposal* compose_proposal(proposal_id pid, int op_type, void* p_data, size_t p_data_len){
proposal* p = calloc(1, sizeof(proposal));
p->pid = pid;
p->state = PS_DEFAULT;
p->time = proposal_get_time_usec();
p->isLocal = 0;//set to 1 ONLY when approved and before execute locally.
p->op_type = op_type;
p->p_data_len = p_data_len;
p->proposal_data = p_data;//calloc(1, p_data_len);
p->result_obj_local = NULL;
//printf("%s:%d: test proposal_data len = %lu, data = %p\n", __func__, __LINE__, p->p_data_len, p->proposal_data);
return p;
}
void proposal_check(proposal* p){
assert(p);
printf("%s:%d: pid = %d, op_type = %d, isLocal = %d, state = %d, time =%lu, p_data_len = %lu, p_data = %p, result_obj_local = %p\n",
__func__, __LINE__, p->pid, p->op_type, p->isLocal, p->state, p->time, p->p_data_len, p->proposal_data, p->result_obj_local);
}
size_t proposal_encoder(proposal* p, void**buf_out){
size_t cal_size = sizeof(proposal_id) +
sizeof(proposal_state) +
sizeof(time_stamp) +
sizeof(int) +
sizeof(int) +
sizeof(size_t) +
p->p_data_len;
//printf("%s:%d: pid = %d\n", __func__, __LINE__, p->pid);
//printf("%s:%d: p->state = %d\n", __func__, __LINE__, p->state);
//printf("%s:%d: p->time = %lu\n", __func__, __LINE__, p->time);
//printf("%s:%d: p->isLocal = %d\n", __func__, __LINE__, p->isLocal);
//printf("%s:%d: p->op_type = %d\n", __func__, __LINE__, p->op_type);
//printf("%s:%d: proposal_encoder: cal_size(total size) = %lu\n", __func__, __LINE__, cal_size);
//printf("%s:%d: proposal_encoder p->p_data_len = %lu\n", __func__, __LINE__, p->p_data_len);
*buf_out = calloc(1, cal_size);//sizeof(proposal) + p->p_data_len
void* cur = *buf_out;
*(proposal_id*)cur = p->pid;
cur = (char*)cur + sizeof(proposal_id);
*(proposal_state*)cur = p->state;
cur = (char*)cur + sizeof(proposal_state);
*(time_stamp*)cur = p->time;
cur = (char*)cur + sizeof(time_stamp);
*(int*)cur = p->isLocal;
cur = (char*)cur + sizeof(int);
*(int*)cur = p->op_type;
cur = (char*)cur + sizeof(int);
*(size_t*)cur = p->p_data_len;
cur = (char*)cur + sizeof(size_t);
if(p->p_data_len > 0) {
memcpy(cur, p->proposal_data, p->p_data_len);
//cur = (char*)cur + p->p_data_len;
}
return cal_size;
}
//This is called only when you have a proposal_buf
proposal* proposal_decoder(void* buf_in){
proposal* p = calloc(1, sizeof(proposal));
p->pid = *(proposal_id*)buf_in;
buf_in = (char*)buf_in + sizeof(proposal_id);
//printf("%s:%d: pid = %d\n", __func__, __LINE__, p->pid);
p->state = *(proposal_state*)buf_in;
buf_in = (char*)buf_in + sizeof(proposal_state);
//printf("%s:%d: p->state = %d\n", __func__, __LINE__, p->state);
p->time = *(time_stamp*)buf_in;
buf_in = (char*)buf_in + sizeof(time_stamp);
//printf("%s:%d: p->time = %lu\n", __func__, __LINE__, p->time);
p->isLocal = *(int*)buf_in;
buf_in = (char*)buf_in + sizeof(int);
//printf("%s:%d: p->isLocal = %d\n", __func__, __LINE__, p->isLocal);
p->op_type = *(int*)buf_in;
buf_in = (char*)buf_in + sizeof(int);
//printf("%s:%d: p->op_type = %d\n", __func__, __LINE__, p->op_type);
p->p_data_len = *(size_t*)buf_in;
buf_in = (char*)buf_in + sizeof(size_t);
//printf("%s:%d: p->p_data_len = %lu\n", __func__, __LINE__, p->p_data_len);
if(p->p_data_len > 0) {
p->proposal_data = calloc(1, p->p_data_len);
memcpy(p->proposal_data, buf_in, p->p_data_len);
buf_in = (char*)buf_in + p->p_data_len;
}
else
p->proposal_data = NULL;
// a remote proposal won't carry a resulting obj, so it's safe to set to NULL.
// This field should be assigned only when the proposal is to execute locally (then carry a resulting obj.)
p->result_obj_local = NULL;
return p;
}
void proposal_buf_test(void* buf_in){
proposal* p = proposal_decoder(buf_in);
printf("Checking proposal content: p->pid = %d, p->state = %d, p->time = %lu, p->isLocal = %d, p->op_type = %d, p->p_data_len = %lu\n",
p->pid, p->state, p->time, p->isLocal, p->op_type, p->p_data_len);
free(p);
}
time_stamp set_proposal_time(proposal* p){
assert(p);
p->time = proposal_get_time_usec();
return p->time;
}
proposal_id new_proposal_ID(){
struct timeval tv;
gettimeofday(&tv, NULL);
return getpid() + tv.tv_usec;
}