adamierymenko / kissdb Goto Github PK

Hi,

Putting stuff in the public domain feels like a "wide open" way of releasing your software, but it has a great deal of ambiguity since it doesn't really say if you're going to enforce your copyright and patents or not.

Please consider using a real Free Software license. Something that forces your code to remain free, like the GPL. If you have issues with the GPL, please consider the MIT license which is likely going to make the use of your software by other projects much easier since it states explicitly what you intend with your copyright.

Many thanks for your software and for your consideration of this issue.

Regards,

Jeremiah

Working on a multiple access database. If a call to KISSDB_get fails as the key does not exists yet then that call will always fails even though the key has been written by another process.

Not sure if this is a bug or an expected behaviour. My work around for now is to close and reopen the db.

I wrote these two codes to illustrate this. A and B. On an existing db run A which should say fail as the key 100 does not exists. While A runs run B to write the key 100. A will still say fail. Close A and relaunch. It will now find the key.

A

#include <stdio.h>
#include "kissdb.h"
#include <inttypes.h>
#include <signal.h>
#include <unistd.h>

static volatile int keepRunning = 1;
void intHandler(int dummy) {
	keepRunning = 0;
}

int main(int argc, char *argv[]){
	KISSDB db;
	uint64_t paquets[2];
	uint64_t key = 100;
	KISSDB_open(&db,"test.db",KISSDB_OPEN_MODE_RDWR,1024,8,sizeof(paquets));
	
	
	while (1){
	
		if (KISSDB_get(&db, &key, paquets)) printf("fails\n");
		else printf("ok\n");
		sleep(2);	
	
	}
}

B

#include <stdio.h>
#include "kissdb.h"
#include <inttypes.h>
#include <signal.h>
#include <unistd.h>

static volatile int keepRunning = 1;
void intHandler(int dummy) {
	keepRunning = 0;
}

int main(int argc, char *argv[]){
	KISSDB db;
	uint64_t paquets[2];
	uint64_t key = 100;
	KISSDB_open(&db,"test.db",KISSDB_OPEN_MODE_RWCREAT,1024,8,sizeof(paquets));
	KISSDB_put(&db, &key, paquets);
	KISSDB_close(&db);

}