Hi,
Is it possible to write contents to a file at an indefinite time from
javascript and read those contents in C code after some amount of time and
continue this process?
For example, if I write some content from javascript to a shared file at a
time "t" and want to read that contents in C code at "t+1" time and clear
those contents from the shared file, and again the javascript code will
write the contents at "t+2" time and want to read that contents in C code
at "t+3" time.
Means will the compiled C code (emscripten web assembly) and our own
Javascript code can run asynchronously?
*Javascript Code:*
Module.noInitialRun = true;
Module.onRuntimeInitialized = ()=>
{
console.log("Initialized");
const stream = Module.FS.open('./events.txt', 'a+');
window.addEventListener
(
'keyup',
(ev) =>
{
if(ev.key === 'p')
{
console.log("Writing");
const output = 'p';
const enc = new TextEncoder();
enc.encode(output);
const data = enc.encode(output);
Module.FS.write(stream, data, 0, data.length);
}
}
);
Module.callMain();
}
*C Code:*
#include <stdio.h>
#include <string.h>
int main()
{
FILE* ptr;
char str[50];
ptr = fopen("./events.txt", "r");
if (NULL == ptr)
{
printf("Unable to open events file\n");
return -1;
}
printf("File contents : \n");
while (fgets(str, 50, ptr) != NULL)
{
printf("%s\n", str);
}
// Perform some operations here
// And again execute the above reading code after some time
return 0;
}
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