Whoops, looks like it isn't related to libuv. I just tried it with libuv in
c and it works flawlessly. Must be something on the side of luvit then?
Anyways sorry for the noise :)
On Monday, 8 June 2020 12:04:30 UTC+5:30, Shreyansh Chouhan wrote:
>
> I was using libuv through luvit to watch a file for fs notifications. And
> I used the C
> code written at the end of this mail to edit the file. For some reason,
> not all the writes lead
> to the execution of the callback.
>
> Also another weird thing that I noticed was that if I edited the watched
> file using an editor, (say gedit or nano,) all
> the notifications were registered and the callback was called after every
> save/write.
>
> I used the following C code to write different lines to a file one by one,
> and found that
> the callbacks were skipped for a few writes. (Also, if it helps, I tried
> using inotify to
> monitor the same file, and it just worked. The execution of callbacks was
> not skipped
> for a single write.)
>
> C Code (two files one uses write and the other fwrite, both caused skips):
> #include<stdio.h>
> #include<unistd.h>
> #include<fcntl.h>
>
> int main (int argc, char **argv) {
> if(argc != 2) {
> printf("You fool\n");
> return 0;
> }
>
> int x = argv[1][0] - '0';
>
> int fd;
> char str[4][8] = {
> {'l', 'i', 'n', 'e', ' ', '1', '\n', '\0'},
> {'l', 'i', 'n', 'e', ' ', '2', '\n', '\0'},
> {'l', 'i', 'n', 'e', ' ', '3', '\n', '\0'},
> {'l', 'i', 'n', 'e', ' ', '4', '\n', '\0'}
> };
>
> fd = open("test", O_WRONLY | O_APPEND);
> write(fd, str[x], sizeof(str[x]));
>
> close(fd);
>
> return 0;
> }
>
> #include<stdio.h>
> #include<unistd.h>
>
> int main (int argc, char **argv) {
> if(argc != 2) {
> printf("You fool\n");
> return 0;
> }
>
> int x = argv[1][0] - '0';
>
> FILE *fp;
> char str[4][8] = {
> {'l', 'i', 'n', 'e', ' ', '1', '\n', '\0'},
> {'l', 'i', 'n', 'e', ' ', '2', '\n', '\0'},
> {'l', 'i', 'n', 'e', ' ', '3', '\n', '\0'},
> {'l', 'i', 'n', 'e', ' ', '4', '\n', '\0'}
> };
>
> fp = fopen("test", "a");
> fwrite(str[x], 1, sizeof(str[x]), fp);
>
> fclose(fp);
>
> return 0;
> }
>
>
>
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