Hi folks,
I have a problem where my messages keep growing.
The following code demonstrates the problem:
#include "TestMsg.capnp.h"
#include <iostream>
#include <capnp/serialize.h>
#include <unistd.h>
#include <fcntl.h>
int main() {
::capnp::MallocMessageBuilder mb;
TestMsg::Builder leb = mb.initRoot<TestMsg>();
int fd = open("log.log", O_WRONLY | O_CREAT | O_TRUNC, 0640);
kj::FdOutputStream fos(fd);
int lastPos = 0;
int filePos;
for (int i = 0; i < 4; ++i) {
auto u = leb.getU();
u.setS("testing");
capnp::writeMessage(fos, mb);
filePos = lseek(fd, 0, SEEK_CUR);
std::cout << "delta " << (filePos - lastPos) << std::endl;
lastPos = filePos;
}
return 0;
}
with the following capnp file:
@0xf7315241b617fd18; # unique file ID, generated by `capnp id`
# Entries for logs
struct TestMsg {
u: union {
i @0 :UInt32;
d @1 :Float64;
s @2 :Text;
}
}
The output is:
delta 48
delta 56
delta 64
delta 72
Any suggestions would be appreciated.
Thanks.
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