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ctrip_vector_clock.c
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ctrip_vector_clock.c
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/*
* Copyright (c) 2009-2012, CTRIP CORP <RDkjdata at ctrip dot com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Redis nor the names of its contributors may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
//
// Created by zhuchen on 2019-05-10.
//
#include "ctrip_vector_clock.h"
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
/**------------------------Vector Clock Inner Functions--------------------------------------*/
static inline clk *get_clock_unit(VectorClock *vc, char gid) {
if(vc == NULL) {
return NULL;
}
if (get_len(*vc) == 1 && get_gid(*get_clock_unit_by_index(vc, 0)) == gid) {
return get_clock_unit_by_index(vc, 0);
}
for (char i = 0; i < get_len(*vc); i++) {
clk *clock = (clk *)(get_clock_unit_by_index(vc, i));
if ((char) get_gid(*clock) == gid) {
return clock;
}
}
return NULL;
}
/**------------------------Vector Clock Lifecycle--------------------------------------*/
VectorClock
newVectorClockFromGidAndClock(int gid, long long clock) {
VectorClock vc = newVectorClock(1);
clk clock_unit = init_clock((char)gid, clock);
set_clock_unit_by_index(&vc, 0, clock_unit);
return vc;
}
#if defined(TCL_TEST)
VectorClock
newVectorClock(int numVcUnits) {
if(numVcUnits == 0) return NULL;
VectorClock result = vc_malloc(sizeof(VectorClockUnit) * numVcUnits + sizeof(TestVectorClock));
result->len = numVcUnits;
return result;
}
void
freeVectorClock(VectorClock vc) {
// printf("freeVectorClock %p \n", vc);
vc_free(vc);
}
clk* clocks_address(VectorClock value) {
return (clk*)(&value->vcu);
}
#else
VectorClock
newVectorClock(int numVcUnits) {
long long vc = 0ull;
VectorClock result = LL2VC(vc);
if(numVcUnits == 0) {
return result;
}
if(numVcUnits > 1) {
clk *clocks = vc_malloc(sizeof(clk) * numVcUnits);
result.pvc.pvc = ULL(clocks);
}
set_len(&result, (char)numVcUnits);
return result;
}
void
freeVectorClock(VectorClock vc) {
if (isNullVectorClock(vc) || (get_len(vc) < 2)) {
return;
}
vc_free(clocks_address(vc));
}
clk* clocks_address(VectorClock value) {
if(get_len(value) == 1) {
return &value.unit;
}
return (clk*)(long long)value.pvc.pvc;
}
#endif
VectorClock
addVectorClockUnit(VectorClock vc, int gid, long long logic_time) {
clk *dst_clock = get_clock_unit(&vc, gid);
if(dst_clock != NULL) {
set_gid(dst_clock, (char)gid);
set_logic_clock(dst_clock, logic_time);
return vc;
}
VectorClock target = newVectorClock(get_len(vc) + 1);
char vc_index = 0, tar_index = 0;
while(vc_index < get_len(vc)) {
clk *clock = get_clock_unit_by_index(&vc, vc_index);
set_clock_unit_by_index(&target, tar_index++, *clock);
vc_index ++;
}
clk wanted = init_clock((char)gid, logic_time);
if(tar_index < get_len(target)) {
set_clock_unit_by_index(&target, tar_index++, wanted);
}
sortVectorClock(target);
freeVectorClock(vc);
return target;
}
/**------------------------Vector Clock Util--------------------------------------*/
int isNullVectorClock(VectorClock vc) {
return get_len(vc) == 0;
}
int isNullVectorClockUnit(VectorClockUnit unit) {
return unit.clock == 0;
}
void set_clock_unit_by_index(VectorClock *vclock, char index, clk gid_logic_time) {
clk *clock = get_clock_unit_by_index(vclock, index);
// *clock = gid_logic_time;
set_gid(clock, get_gid(gid_logic_time));
set_logic_clock(clock, get_logic_clock(gid_logic_time));
}
/* Sort comparators for qsort() */
static int sort_vector_clock_unit(const void *a, const void *b) {
const clk *vcu_a = a, *vcu_b = b;
/* We sort the vector clock unit by gid*/
if (get_gid(*vcu_a) > get_gid(*vcu_b))
return 1;
else if (get_gid(*vcu_a) == get_gid(*vcu_b))
return 0;
else
return -1;
}
void sortVectorClock(VectorClock vc) {
if(get_len(vc) == 1) {
return;
}
qsort(clocks_address(vc), get_len(vc), sizeof(clk), sort_vector_clock_unit);
}
clk
getVectorClockUnit(VectorClock vc, int gid) {
long long unit = 0;
if(isNullVectorClock(vc)) {
return VCU(unit);
}
if (isNullVectorClock(vc) || get_len(vc) == 0) {
return VCU(unit);
}
clk* result = get_clock_unit(&vc, gid);
if(result == NULL) return VCU(unit);
return *result;
}
void incrLogicClock(VectorClock *vc, int gid, long long delta) {
clk *clock = get_clock_unit(vc, gid);
if(clock == NULL) {
return;
}
long long logic_clock = get_logic_clock(*clock) + delta;
set_logic_clock(clock, logic_clock);
}
static inline int count_all_gid_num(VectorClock dst, VectorClock src) {
unsigned int gid_bit_map = 0u; int gid_num = 0;
if(get_len(src) == 1) {
unsigned char gid = (unsigned char) get_gid(*get_clock_unit_by_index(&src, 0));
if(!((gid_bit_map >> gid) & 0x1u)) {
gid_num ++;
gid_bit_map |= (0x1u << gid);
}
} else {
for (char i = 0; i < get_len(src); i++) {
unsigned char gid = get_gid(*(get_clock_unit_by_index(&src, i)));
if (!((gid_bit_map >> gid) & 0x1u)) {
gid_num++;
gid_bit_map |= (0x1u << gid);
}
}
}
if(get_len(dst) == 1) {
unsigned char gid = (unsigned char) get_gid(*get_clock_unit_by_index(&dst, 0));
if(!((gid_bit_map >> gid) & 0x1u)) {
gid_num ++;
gid_bit_map |= (0x1u << gid);
}
} else {
for (int i = 0; i < get_len(dst); i++) {
unsigned char gid = get_gid(*(get_clock_unit_by_index(&dst, i)));
if (!((gid_bit_map >> gid) & 0x1u)) {
gid_num++;
gid_bit_map |= (0x1u << gid);
}
}
}
return gid_num;
}
static void commonMergeFunction(VectorClock *dst, VectorClock *src, int gid, int flag) {
clk *dst_logic_clock = get_clock_unit(dst, gid);
clk *src_logic_clock = get_clock_unit(src, gid);
if(src_logic_clock == NULL) {
return;
}
//dst does not hold the gid
if(dst_logic_clock == NULL) {
char dst_length = get_len(*dst);
VectorClock result = newVectorClock(dst_length + 1);
if(dst_length == 1) {
set_clock_unit_by_index(&result, 0, *get_clock_unit_by_index(dst, 0));
} else {
for(int i = 0; i < dst_length; i++) {
set_clock_unit_by_index(&result, i, *get_clock_unit_by_index(dst, (char)i));
}
}
set_clock_unit_by_index(&result, dst_length, init_clock(gid, get_logic_clock(*src_logic_clock)));
VectorClock* v = dst;
freeVectorClock(*dst);
*v = result;
// clk *new_clocks = vc_malloc(sizeof(clk) * (dst_length + 1));
// if (dst_length == 1) {
// new_clocks[0] = init_clock(get_gid(get_frist_unit(dst)), get_logic_clock(get_frist_unit(dst)));
// } else {
// memcpy(new_clocks, clocks_address(*dst), dst_length * sizeof(clk));
// }
// new_clocks[(int)dst_length] = init_clock(gid, get_logic_clock(*src_logic_clock));
// freeVectorClock(*dst);
// dst->pvc.pvc = new_clocks;
// set_len(dst, dst_length + 1);
sortVectorClock(*dst);
} else {
long long logic_clock = 0;
if(flag == CLOCK_UNIT_MAX) {
logic_clock = max((get_logic_clock(*src_logic_clock)), (long long) (get_logic_clock(*dst_logic_clock)));
} else if(flag == CLOCK_UNIT_ALIGN) {
logic_clock = (long long) (get_logic_clock(*src_logic_clock));
}
set_gid(dst_logic_clock, gid);
set_logic_clock(dst_logic_clock, logic_clock);
}
}
void mergeLogicClock(VectorClock *dst, VectorClock *src, int gid) {
commonMergeFunction(dst, src, gid, CLOCK_UNIT_MAX);
}
VectorClock
dupVectorClock(VectorClock vc) {
char length = get_len(vc);
VectorClock dup;
dup = newVectorClock(length);
if(length > 1) {
memcpy(clocks_address(dup), clocks_address(vc), length * sizeof(clk));
}else if(length == 1){
set_clock_unit_by_index(&dup, 0, *get_clock_unit_by_index(&vc, 0));
}
return dup;
}
VectorClock
vectorClockMerge(VectorClock vclock1, VectorClock vclock2) {
if (isNullVectorClock(vclock1) && isNullVectorClock(vclock2)) {
return newVectorClock(0);
}
if (isNullVectorClock(vclock1)) {
return dupVectorClock(vclock2);
}
if (isNullVectorClock(vclock2)) {
return dupVectorClock(vclock1);
}
int gid_num = count_all_gid_num(vclock1, vclock2);
VectorClock target;
if(gid_num > 1) {
target = newVectorClock(gid_num);
} else {
target = dupVectorClock(vclock2);
long long logic_time = max((get_logic_clock(*get_clock_unit_by_index(&vclock2, 0))), (get_logic_clock(*get_clock_unit_by_index(&vclock1, 0))));
set_logic_clock(get_clock_unit_by_index(&target, 0), logic_time);
return target;
}
char index1 = 0, index2 = 0, tar_index = 0;
sortVectorClock(vclock1);
sortVectorClock(vclock2);
while(index1 < get_len(vclock1) && index2 < get_len(vclock2)) {
clk *src_clock = get_clock_unit_by_index(&vclock1, index1);
clk *dst_clock = get_clock_unit_by_index(&vclock2, index2);
if((char)get_gid(*src_clock) == (char)get_gid(*dst_clock)) {
long long logic_clock = max((long long)(get_logic_clock(*src_clock)), (long long)(get_logic_clock(*dst_clock)));
clk tar_clock = init_clock(get_gid(*src_clock), logic_clock);
set_clock_unit_by_index(&target, tar_index++, tar_clock);
index1 ++;
index2 ++;
} else if((char)get_gid(*src_clock) > (char)get_gid(*dst_clock)) {
set_clock_unit_by_index(&target, tar_index++, *dst_clock);
index2 ++;
} else {
set_clock_unit_by_index(&target, tar_index++, *src_clock);
index1 ++;
}
}
while(index1 < get_len(vclock1)) {
clk *src_clock = get_clock_unit_by_index(&vclock1, index1);
set_clock_unit_by_index(&target, tar_index++, *src_clock);
index1++;
}
while(index2 < get_len(vclock2)) {
clk *dst_clock = get_clock_unit_by_index(&vclock2, index2);
set_clock_unit_by_index(&target, tar_index++, *dst_clock);
index2++;
}
return target;
}
/**------------------------Vector Clock & sds convertion--------------------------------------*/
clk
sdsToVectorClockUnit(sds vcUnitStr) {
int numElements;
long long result = 0;
sds *vcUnits = sdssplitlen(vcUnitStr, sdslen(vcUnitStr), VECTOR_CLOCK_UNIT_SEPARATOR, 1, &numElements);
if(!vcUnits || numElements != 2) {
sdsfreesplitres(vcUnits, numElements);
return VCU(result);
}
long long ll_gid, ll_time;
string2ll(vcUnits[0], sdslen(vcUnits[0]), &ll_gid);
string2ll(vcUnits[1], sdslen(vcUnits[1]), &ll_time);
assert(ll_gid > 0);
assert(ll_time >= 0);
sdsfreesplitres(vcUnits, numElements);
return init_clock((char)ll_gid, ll_time);
}
// "<gid>:<clock>;<gid>:<clock>"
VectorClock
sdsToVectorClock(sds vcStr) {
int numVcUnits, clockNum;
sds *vcUnits = sdssplitlen(vcStr, sdslen(vcStr), VECTOR_CLOCK_SEPARATOR, 1, &numVcUnits);
if(numVcUnits <= 0 || !vcUnits) {
return newVectorClock(0);
}
clockNum = numVcUnits;
sdstrim(vcUnits[numVcUnits-1], "");
if(sdslen(vcUnits[numVcUnits-1]) < 1) {
clockNum = numVcUnits - 1;
}
VectorClock result = newVectorClock(clockNum);
if (clockNum == 1) {
clk clock_unit = sdsToVectorClockUnit(vcUnits[0]);
set_clock_unit_by_index(&result, 0, clock_unit);
} else {
for (int i = 0; i < clockNum; i++) {
clk clock_unit = sdsToVectorClockUnit(vcUnits[i]);
set_clock_unit_by_index(&result, (char) i, clock_unit);
}
}
//clean up
sdsfreesplitres(vcUnits, numVcUnits);
return result;
}
void split(char *src,const char *separator,char **dest,int *num) {
char *pNext;
int count = 0;
if (src == NULL)
return;
if (separator == NULL)
return;
pNext = strtok(src,separator);
while(pNext != NULL) {
*dest++ = pNext;
++count;
pNext = strtok(NULL,separator);
}
*num = count;
}
char *trim(char *str)
{
char *p = str;
char *p1;
if(p)
{
p1 = p + strlen(str) - 1;
while(*p && isspace(*p)) p++;
while(p1 > p && isspace(*p1)) *p1-- = '\0';
}
return p;
}
clk
stringToVectorClockUnit(char* vcUnitStr) {
int numElements = 0;
long long result = 0;
char* vcUnits[2];
split(vcUnitStr,VECTOR_CLOCK_UNIT_SEPARATOR,vcUnits,&numElements);
if(numElements != 2) {
return VCU(result);
}
long long ll_gid, ll_time;
string2ll(vcUnits[0], strlen(vcUnits[0]), &ll_gid);
string2ll(vcUnits[1], strlen(vcUnits[1]), &ll_time);
assert(ll_gid > 0);
assert(ll_time >= 0);
return init_clock((char)ll_gid, ll_time);
}
VectorClock
stringToVectorClock(char* buf) {
char* vcUnits[2<<GIDSIZE];
int clockNum = 0;
split(buf,VECTOR_CLOCK_SEPARATOR,vcUnits,&clockNum);
if(clockNum == 0) {
return newVectorClock(0);
}
vcUnits[clockNum-1] = trim(vcUnits[clockNum-1]);
if(strlen(vcUnits[clockNum-1]) < 1) {
clockNum = clockNum - 1;
}
VectorClock result = newVectorClock(clockNum);
if (clockNum == 1) {
clk clock_unit = stringToVectorClockUnit(vcUnits[0]);
set_clock_unit_by_index(&result, 0, clock_unit);
} else {
for (int i = 0; i < clockNum; i++) {
clk clock_unit = stringToVectorClockUnit(vcUnits[i]);
set_clock_unit_by_index(&result, (char) i, clock_unit);
}
}
return result;
}
int lllen(long long v) {
int len = 0;
if(v < 0) {
v = -v;
len = 1;
}
do {
len += 1;
v /= 10;
} while(v);
return len;
}
size_t vectorClockToStringLen(VectorClock vc) {
if(isNullVectorClock(vc) || get_len(vc) < 1) {
return 0;
}
int length = get_len(vc);
size_t buflen = 0;
buflen += (int)get_gid(*get_clock_unit_by_index(&vc, 0)) >= 10? 3: 2;
buflen += lllen(get_logic_clock(*get_clock_unit_by_index(&vc, 0)));
for (int i = 1; i < length; i++) {
clk *vc_unit = get_clock_unit_by_index(&vc, i);
buflen += (int) get_gid(*vc_unit) >= 10? 4:3;
buflen += lllen(get_logic_clock(*vc_unit));
}
return buflen;
}
size_t vectorClockToString(char* buf, VectorClock vc) {
int length = get_len(vc);
if(isNullVectorClock(vc) || length < 1) {
buf[0] = '\0';
return 0;
}
size_t buflen = 0;
buflen += sprintf(buf, "%d:%lld", (int)get_gid(*get_clock_unit_by_index(&vc, 0)), get_logic_clock(*get_clock_unit_by_index(&vc, 0)));
for (int i = 1; i < length; i++) {
clk *vc_unit = get_clock_unit_by_index(&vc, i);
buflen += sprintf(buf + buflen, ";%d:%lld", (int) get_gid(*vc_unit), get_logic_clock(*vc_unit));
}
return buflen;
}
sds
vectorClockToSds(VectorClock vc) {
if(isNullVectorClock(vc) || get_len(vc) < 1) {
return sdsempty();
}
int length = get_len(vc);
sds vcStr = sdsempty();
if(length == 1) {
vcStr = sdscatprintf(vcStr, "%d:%lld", (int)get_gid(*get_clock_unit_by_index(&vc, 0)), get_logic_clock(*get_clock_unit_by_index(&vc, 0)));
} else {
for (int i = 0; i < length; i++) {
clk *vc_unit = get_clock_unit_by_index(&vc, i);
vcStr = sdscatprintf(vcStr, "%d:%lld", (int) get_gid(*vc_unit), get_logic_clock(*vc_unit));
if (i != length - 1) {
vcStr = sdscat(vcStr, VECTOR_CLOCK_SEPARATOR);
}
}
}
return vcStr;
}
int
isVectorClockMonoIncr(VectorClock current, VectorClock future) {
if (isNullVectorClock(current) || isNullVectorClock(future)) {
return 0;
}
char current_length = get_len(current), future_length = get_len(future);
if (current_length > future_length) {
return 0;
}
for (int i = 0; i < current_length; i++) {
clk *vcu1 = get_clock_unit_by_index(¤t, i);
clk *vcu2 = get_clock_unit(&future, get_gid(*vcu1));
if (vcu2 == NULL && (get_logic_clock(*vcu1)) != 0) {
return 0;
}
if (vcu2 != NULL && ((long long) (get_logic_clock(*vcu2))) < ((long long) (get_logic_clock(*vcu1)))) {
return 0;
}
}
return 1;
}
void
updateProcessVectorClock(VectorClock *dst, VectorClock *src, int gid, int currentGid) {
if(gid == currentGid) {
commonMergeFunction(dst, src, gid, CLOCK_UNIT_ALIGN);
} else {
commonMergeFunction(dst, src, gid, CLOCK_UNIT_MAX);
}
}
VectorClock
getMonoVectorClock(VectorClock src, int gid) {
VectorClock dst = newVectorClock(1);
clk *clock = get_clock_unit(&src, gid);
if (clock == NULL) {
return newVectorClock(0);
} else {
// dst.unit = *clock;
clk* f = get_clock_unit_by_index(&dst, 0);
set_logic_clock(f, get_logic_clock(*clock));
set_gid(f, get_gid(*clock));
}
set_len(&dst, 1);
return dst;
}
void cleanVectorClock(VectorClock *vclock) {
char length = get_len(*vclock);
if(length == 1) {
set_logic_clock(get_clock_unit_by_index(vclock, 0), 0);
} else {
int index = 0;
while(index < length) {
clk *src_clock = get_clock_unit_by_index(vclock, index);
set_logic_clock(src_clock, 0);
index++;
}
}
}
VectorClock
mergeMinVectorClock(VectorClock vclock1, VectorClock vclock2) {
if (isNullVectorClock(vclock1) && isNullVectorClock(vclock2)) {
return newVectorClock(0);
}
if (isNullVectorClock(vclock1)) {
VectorClock result = dupVectorClock(vclock2);
cleanVectorClock(&result);
return result;
}
if (isNullVectorClock(vclock2)) {
VectorClock result = dupVectorClock(vclock1);
cleanVectorClock(&result);
return result;
}
char clock1_length = get_len(vclock1), clock2_length = get_len(vclock2);
int gid_nums = count_all_gid_num(vclock1, vclock2);
VectorClock target;
if(gid_nums > 1) {
target = newVectorClock(gid_nums);
} else {
target = dupVectorClock(vclock2);
long long logic_time = min(get_logic_clock(*get_clock_unit_by_index(&vclock2, 0)),get_logic_clock(*get_clock_unit_by_index(&vclock1, 0)));
clk* f = get_clock_unit_by_index(&target, 0);
set_logic_clock(f, logic_time);
return target;
}
set_len(&target, (char) gid_nums);
int index1 = 0, index2 = 0, tar_index = 0;
sortVectorClock(vclock1);
sortVectorClock(vclock2);
while(index1 < clock1_length && index2 < clock2_length) {
clk *src_clock = get_clock_unit_by_index(&vclock1, index1);
clk *dst_clock = get_clock_unit_by_index(&vclock2, index2);
if((char)get_gid(*src_clock) == (char)get_gid(*dst_clock)) {
long long logic_clock = min((long long)(get_logic_clock(*src_clock)), (long long)(get_logic_clock(*dst_clock)));
clk tar_clock = init_clock((char)get_gid(*src_clock), (long long)logic_clock);
set_clock_unit_by_index(&target, tar_index++, tar_clock);
index1 ++;
index2 ++;
} else if((char)get_gid(*src_clock) > (char)get_gid(*dst_clock)) {
long long logic_clock = 0;
clk tar_clock = init_clock((char)get_gid(*dst_clock), (long long)logic_clock);
set_clock_unit_by_index(&target, tar_index++, tar_clock);
index2 ++;
} else {
long long logic_clock = 0;
clk tar_clock = init_clock((char)get_gid(*src_clock), (long long)logic_clock);
set_clock_unit_by_index(&target, tar_index++, tar_clock);
index1 ++;
}
}
while(index1 < clock1_length) {
clk *src_clock = get_clock_unit_by_index(&vclock1, index1);
clk tar_clock = init_clock((char)get_gid(*src_clock), 0);;
set_clock_unit_by_index(&target, tar_index++, tar_clock);
index1++;
}
while(index2 < clock2_length) {
clk *dst_clock = get_clock_unit_by_index(&vclock2, index2);
clk tar_clock = init_clock((char)get_gid(*dst_clock), 0);
set_clock_unit_by_index(&target, tar_index++, tar_clock);
index2++;
}
set_len(&target, (char) gid_nums);
return target;
}
VectorClock
purgeVectorClock(VectorClock targe, VectorClock src) {
if (isNullVectorClock(targe) || isNullVectorClock(src)) {
return targe;
}
int len = get_len(targe);
clk c[len];
int index = 0;
for(int i = 0; i < len; i++) {
clk* vcu1 = get_clock_unit_by_index(&targe, i);
unsigned char gid = (unsigned char) get_gid(*vcu1);
clk* vcu2 = get_clock_unit(&src, gid);
if (vcu2 == NULL && (get_logic_clock(*vcu1)) != 0) {
c[index] = *vcu1;
index ++;
}
if (vcu2 != NULL && ((long long) (get_logic_clock(*vcu2))) < ((long long) (get_logic_clock(*vcu1)))) {
c[index] = *vcu1;
index ++;
}
}
VectorClock result = newVectorClock(index);
for(int i = 0; i < index; i++) {
set_clock_unit_by_index(&result, i, c[i]);
}
freeVectorClock(targe);
return result;
}
long long get_vcu_from_vc(VectorClock vc, int gid, int* index) {
for(int i = 0, len = get_len(vc); i < len; i++) {
clk* c = get_clock_unit_by_index(&vc, i);
if(get_gid(*c) == gid) {
if(index != NULL) *index = i;
return get_logic_clock(*c);
}
}
if(index != NULL) *index = -1;
return 0;
}
int not_less_than_vc(VectorClock min_vc, VectorClock myself_vc) {
for(int i = 0; i < get_len(min_vc); i++) {
clk* c = get_clock_unit_by_index(&min_vc, i);
long long min_vcu = get_logic_clock(*c);
long long myself_vcu = get_vcu_from_vc(myself_vc, get_gid(*c), NULL);
if(myself_vcu > min_vcu) {
return 1;
}
}
return 0;
}
#if defined(VECTOR_CLOCK_TEST_MAIN)
#include <stdlib.h>
#include <stdio.h>
#include "testhelp.h"
#include "limits.h"
int testSdsConvert2VectorClockUnit(void) {
printf("========[testSdsConvert2VectorClockUnit]==========\r\n");
sds vcStr = sdsnew("1:123");
clk clock = sdsToVectorClockUnit(vcStr);
printf("[gid]%d\n", get_gid(clock));
printf("[logic_time]%lld\n", get_logic_clock(clock));
test_cond("[sds to vcu][gid]", 1 == get_gid(clock));
test_cond("[sds to vcu][clock]", 123 == ((long long)(get_logic_clock(clock))));
return 0;
}
int testSdsConvert2VectorClock(void) {
printf("========[testSdsConvert2VectorClock]==========\r\n");
sds vcStr = sdsnew("1:123;2:234;3:345");
VectorClock vc = sdsToVectorClock(vcStr);
printf("[test-3]");
int i = 0;
clk *clock = get_clock_unit_by_index(&vc, i);
test_cond("[first vc]gid equals", 1 == get_gid(*clock));
test_cond("[first vc]logic_time equals", 123 == (long long)get_logic_clock(*clock));
i = 1;
clock = get_clock_unit_by_index(&vc, i);
test_cond("[second vc]gid equals", 2 == get_gid(*clock));
test_cond("[second vc]logic_time equals", 234 == (long long)get_logic_clock(*clock));
i = 2;
clock = get_clock_unit_by_index(&vc, i);
test_cond("[third vc]gid equals", 3 == get_gid(*clock));
test_cond("[third vc]logic_time equals", 345 == (long long)get_logic_clock(*clock));
vcStr = sdsnew("1:123");
vc = sdsToVectorClock(vcStr);
test_cond("[one clock unit]length", 1 == get_len(vc));
test_cond("[one clock unit]", 1 == get_gid(*get_clock_unit_by_index(&vc, 0)));
test_cond("[one clock unit]", 123 == get_logic_clock(*get_clock_unit_by_index(&vc, 0)));
vcStr = sdsnew("1:123;");
vc = sdsToVectorClock(vcStr);
test_cond("[one clock unit;]length", 1 == get_len(vc));
test_cond("[one clock unit;]gid equals", 1 == get_gid(*get_clock_unit_by_index(&vc, 0)));
test_cond("[one clock unit;]logic_time equals", 123 == (long long)get_logic_clock(*get_clock_unit_by_index(&vc, 0)));
return 0;
}
int testStringConvert2VectorClockUnit(void) {
printf("========[testStringConvert2VectorClockUnit]==========\r\n");
// sds vcStr = sdsnew("1:123");
char vcStr[6] = "1:123\0";
clk clock = stringToVectorClockUnit(vcStr);
printf("[gid]%d\n", get_gid(clock));
printf("[logic_time]%lld\n", get_logic_clock(clock));
test_cond("[string to vcu][gid]", 1 == get_gid(clock));
test_cond("[string to vcu][clock]", 123 == ((long long)(get_logic_clock(clock))));
char vcStr1[10] = "1:123\0";
clock = stringToVectorClockUnit(vcStr1);
printf("[gid]%d\n", get_gid(clock));
printf("[logic_time]%lld\n", get_logic_clock(clock));
test_cond("[string to vcu][gid]", 1 == get_gid(clock));
test_cond("[string to vcu][clock]", 123 == ((long long)(get_logic_clock(clock))));
return 0;
}
int testStringConvert2VectorClock(void) {
printf("========[testStringConvert2VectorClock]==========\r\n");
// sds vcStr = sdsnew("1:123;2:234;3:345");
char vcStr[18] = "1:123;2:234;3:345\0";
VectorClock vc = stringToVectorClock(vcStr);
int i = 0;
clk *clock = get_clock_unit_by_index(&vc, i);
test_cond("[first vc]gid equals", 1 == get_gid(*clock));
test_cond("[first vc]logic_time equals", 123 == (long long)get_logic_clock(*clock));
i = 1;
clock = get_clock_unit_by_index(&vc, i);
test_cond("[second vc]gid equals", 2 == get_gid(*clock));
test_cond("[second vc]logic_time equals", 234 == (long long)get_logic_clock(*clock));
i = 2;
clock = get_clock_unit_by_index(&vc, i);
test_cond("[third vc]gid equals", 3 == get_gid(*clock));
test_cond("[third vc]logic_time equals", 345 == (long long)get_logic_clock(*clock));
// vcStr = sdsnew("1:123");
char vcStr1[6] = "1:123\0";
vc = stringToVectorClock(vcStr1);
test_cond("[one clock unit]length", 1 == get_len(vc));
test_cond("[one clock gid]", 1 == get_gid(*get_clock_unit_by_index(&vc, 0)));
printf("faild %lld\r\n", get_logic_clock(*get_clock_unit_by_index(&vc, 0)));
test_cond("[one clock unit]:", 123 == get_logic_clock(*get_clock_unit_by_index(&vc, 0)));
// vcStr = sdsnew("1:123;");
char vcStr2[7] = "1:123;\0";
vc = stringToVectorClock(vcStr2);
test_cond("[one clock unit;]length", 1 == get_len(vc));
test_cond("[one clock unit;]gid equals", 1 == get_gid(*get_clock_unit_by_index(&vc, 0)));
test_cond("[one clock unit;]logic_time equals", 123 == (long long)get_logic_clock(*get_clock_unit_by_index(&vc, 0)));
char vcStr3[8] = "1:123; \0";
vc = stringToVectorClock(vcStr3);
test_cond("[one clock unit;]length", 1 == get_len(vc));
test_cond("[one clock unit;]gid equals", 1 == get_gid(*get_clock_unit_by_index(&vc, 0)));
test_cond("[one clock unit;]logic_time equals", 123 == (long long)get_logic_clock(*get_clock_unit_by_index(&vc, 0)));
char vcStr4[99] = "1:123;\0";
vc = stringToVectorClock(vcStr4);
test_cond("[one clock unit;]length", 1 == get_len(vc));
test_cond("[one clock unit;]gid equals", 1 == get_gid(*get_clock_unit_by_index(&vc, 0)));
test_cond("[one clock unit;4]logic_time equals", 123 == (long long)get_logic_clock(*get_clock_unit_by_index(&vc, 0)));
return 0;
}
int testFreeVectorClock(void) {
printf("========[testFreeVectorClock]==========\r\n");
sds vcStr = sdsnew("1:123;2:234;3:345");
VectorClock vc = sdsToVectorClock(vcStr);
freeVectorClock(vc);
return 0;
}
int testvectorClockToSds(void) {
printf("========[testvectorClockToSds]==========\r\n");
sds vcStr = sdsnew("1:123");
VectorClock vc = newVectorClock(1);
set_clock_unit_by_index(&vc, 0, init_clock(1, 123));
sds dup = vectorClockToSds(dupVectorClock(vc));
printf("expected: %s, actual: %s \r\n", vcStr, dup);
test_cond("[testvectorClockToSds]", sdscmp(vcStr, dup) == 0);
freeVectorClock(vc);
vcStr = sdsnew("1:123;2:234;3:345");
vc = sdsToVectorClock(vcStr);
dup = vectorClockToSds(vc);
printf("expected: %s, actual: %s \r\n", vcStr, dup);
test_cond("[testvectorClockToSds]", sdscmp(vcStr, dup) == 0);
freeVectorClock(vc);
return 0;
}
int testvectorClockToString(void) {
printf("========[testvectorClockToString]==========\r\n");
sds vcStr = sdsnew("1:123");
VectorClock vc = newVectorClock(1);
set_clock_unit_by_index(&vc, 0, init_clock(1, 123));
char dup[100];
size_t len = vectorClockToString(dup, dupVectorClock(vc));
printf("expected: %s, actual: %s \r\n", vcStr, dup);
test_cond("[testvectorClockToString]", strcmp(vcStr, dup) == 0);
test_cond("[testvectorClockToString] len", len == 5);
test_cond("[testvectorClockToStringLen] len", vectorClockToStringLen(vc) == 5);
freeVectorClock(vc);
vcStr = sdsnew("1:123;2:234;3:345");
vc = sdsToVectorClock(vcStr);
len = vectorClockToString(dup, vc);
printf("expected: %s, actual: %s \r\n", vcStr, dup);
test_cond("[testvectorClockToString]", strcmp(vcStr, dup) == 0);
test_cond("[testvectorClockToString] len", len == 17);
test_cond("[testvectorClockToStringLen] len", vectorClockToStringLen(vc) == 17);
freeVectorClock(vc);
return 0;
}
int testSortVectorClock(void) {
printf("========[testSortVectorClock]==========\r\n");
sds vcStr = sdsnew("1:123;2:234;3:345");
VectorClock vc = sdsToVectorClock(vcStr);
sortVectorClock(vc);
sds dup = vectorClockToSds(vc);
test_cond("[testSortVectorClock][positive-case]", sdscmp(vcStr, dup) == 0);
sds vcStr2 = sdsnew("2:234;3:345;1:123");
vc = sdsToVectorClock(vcStr2);
sortVectorClock(vc);
dup = vectorClockToSds(vc);
test_cond("[testSortVectorClock][real-sort-case]", sdscmp(vcStr, dup) == 0);
sds vcStr3 = sdsnew("3:345;1:123;2:234");
vc = sdsToVectorClock(vcStr3);
sortVectorClock(vc);
dup = vectorClockToSds(vc);
test_cond("[testSortVectorClock][real-sort-case]", sdscmp(sdsnew("1:123;2:234;3:345"), dup) == 0);
return 0;
}
int testDupVectorClock(void) {
printf("========[testDupVectorClock]==========\r\n");
sds vcStr = sdsnew("1:123;2:234;3:345");
VectorClock vc = sdsToVectorClock(vcStr);
test_cond("[testDupVectorClock] length", get_len(vc) == 3);
test_cond("[testDupVectorClock] gid-1", get_gid(*get_clock_unit_by_index(&vc, 0)) == 1);
test_cond("[testDupVectorClock] clock-1", get_logic_clock(*get_clock_unit_by_index(&vc, 0)) == 123);
test_cond("[testDupVectorClock] gid-2", get_gid(*get_clock_unit_by_index(&vc, 1)) == 2);
test_cond("[testDupVectorClock] clock-2", get_logic_clock(*get_clock_unit_by_index(&vc, 1)) == 234);
test_cond("[testDupVectorClock] gid-3", get_gid(*get_clock_unit_by_index(&vc, 2)) == 3);
test_cond("[testDupVectorClock] clock-3", get_logic_clock(*get_clock_unit_by_index(&vc, 2)) == 345);
VectorClock dup = dupVectorClock(vc);
sds dupSds = vectorClockToSds(dup);
test_cond("[testDupVectorClock]", sdscmp(vcStr, dupSds) == 0);
// test_cond("[testDupVectorClock] value", dup != vc);
freeVectorClock(vc);
freeVectorClock(dup);
return 0;
}
int testAddVectorClockUnit(void) {
printf("========[testAddVectorClockUnit]==========\r\n");
sds vcStr = sdsnew("1:123;2:234;3:345");
VectorClock vc = sdsToVectorClock(vcStr);
vc = addVectorClockUnit(vc, 11, 50);
printf("result: %s\r\n", vectorClockToSds(vc));
test_cond("[testAddVectorClockUnit]", sdscmp(sdsnew("1:123;2:234;3:345;11:50"), vectorClockToSds(vc)) == 0);
return 0;
}
int testNewVectorClock(void) {
printf("========[testNewVectorClock]==========\r\n");
VectorClock vc = newVectorClock(1);
test_cond("[testNewVectorClock][length equals]", get_len(vc) == 1);
vc = newVectorClock(2);
test_cond("[testNewVectorClock][length equals]", get_len(vc) == 2);
vc = newVectorClock(3);
test_cond("[testNewVectorClock][length equals]", get_len(vc) == 3);
return 0;
}
int testfreeVectorClock(void) {
printf("========[testfreeVectorClock]==========\r\n");
VectorClock vc = newVectorClock(1);
test_cond("[testNewVectorClock][length equals]", get_len(vc) == 1);
freeVectorClock(vc);
vc = newVectorClock(2);
test_cond("[testNewVectorClock][length equals]", get_len(vc) == 2);
freeVectorClock(vc);
vc = newVectorClock(3);
test_cond("[testNewVectorClock][length equals]", get_len(vc) == 3);
freeVectorClock(vc);
return 0;
}
int test_set_clock_unit_by_index(void) {
printf("========[test_set_clock_unit_by_index]==========\r\n");
VectorClock vc = newVectorClock(1);
test_cond("[test_set_clock_unit_by_index][length equals]", get_len(vc) == 1);
set_clock_unit_by_index(&vc, 0, init_clock(1, 123));
test_cond("[test_set_clock_unit_by_index][length equals]", get_len(vc) == 1);
test_cond("[test_set_clock_unit_by_index][gid equals]", get_gid(*get_clock_unit_by_index(&vc, 0)) == 1);
test_cond("[test_set_clock_unit_by_index][logic time equals-2]", get_logic_clock(*get_clock_unit_by_index(&vc, 0)) == 123);
freeVectorClock(vc);
printf("========[test_set_clock_unit_by_index] - 2==========\r\n");
vc = newVectorClock(2);
test_cond("[test_set_clock_unit_by_index][length equals]", get_len(vc) == 2);
set_clock_unit_by_index(&vc, 0, init_clock(1, 123));
set_clock_unit_by_index(&vc, 1, init_clock(2, 234));
test_cond("[test_set_clock_unit_by_index][length equals]", get_len(vc) == 2);
test_cond("[test_set_clock_unit_by_index][gid equals]", get_gid(*get_clock_unit_by_index(&vc, 0)) == 1);
test_cond("[test_set_clock_unit_by_index][logic time equals-2]", get_logic_clock(*get_clock_unit_by_index(&vc, 0)) == 123);
test_cond("[test_set_clock_unit_by_index][length equals]", get_len(vc) == 2);
test_cond("[test_set_clock_unit_by_index][gid equals]", get_gid(*get_clock_unit_by_index(&vc, 1)) == 2);