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* Buffer writes in FdSink. This significantly reduces the number of

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system calls / context switches when dumping a NAR and in the worker
  protocol.
This commit is contained in:
Eelco Dolstra 2011-12-14 23:30:06 +00:00
parent 893cac1402
commit 3a48282b06
4 changed files with 51 additions and 15 deletions
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4
src/libstore/remote-store.cc
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@ -65,6 +65,7 @@ void RemoteStore::openConnection()
/* Send the magic greeting, check for the reply. */
try {
writeInt(WORKER_MAGIC_1, to);
to.flush();
unsigned int magic = readInt(from);
if (magic != WORKER_MAGIC_2) throw Error("protocol mismatch");
@ -166,6 +167,7 @@ void RemoteStore::connectToDaemon()
RemoteStore::~RemoteStore()
{
try {
to.flush();
fdSocket.close();
if (child != -1)
child.wait(true);
@ -488,6 +490,7 @@ void RemoteStore::clearFailedPaths(const PathSet & paths)
void RemoteStore::processStderr(Sink * sink, Source * source)
{
to.flush();
unsigned int msg;
while ((msg = readInt(from)) == STDERR_NEXT
|| msg == STDERR_READ || msg == STDERR_WRITE) {
@ -503,6 +506,7 @@ void RemoteStore::processStderr(Sink * sink, Source * source)
AutoDeleteArray<unsigned char> d(buf);
(*source)(buf, len);
writeString(string((const char *) buf, len), to);
to.flush();
}
else {
string s = readString(from);