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https://issues.apache.org/jira/browse/THRIFT-1442?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13165432#comment-13165432
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Dave Watson commented on THRIFT-1442:
-------------------------------------
Ah thanks for the link, I've updated my test environment to include those
flags.
I've attached patch to fix that particular warning, however my environment (gcc
4.6) I get a lot more. Here's some random warning fixes to make mine build,
not sure if you need any of them
Fix unused variable if a struct contains no members:
{code}
diff --git a/compiler/cpp/src/generate/t_cpp_generator.cc
b/compiler/cpp/src/generate/t_cpp_generator.cc
index 0354a5f..e923be1 100755
--- a/compiler/cpp/src/generate/t_cpp_generator.cc
+++ b/compiler/cpp/src/generate/t_cpp_generator.cc
@@ -1505,13 +1505,16 @@ void t_cpp_generator::generate_struct_swap(ofstream&
out, t_struct* tstruct) {
out <<
indent() << "using ::std::swap;" << endl;
+ // Prevent unused variable warnings
+ indent(out) << "(void)a;" << endl;
+ indent(out) << "(void)b;" << endl;
+
bool has_nonrequired_fields = false;
const vector<t_field*>& fields = tstruct->get_members();
for (vector<t_field*>::const_iterator f_iter = fields.begin();
f_iter != fields.end();
++f_iter) {
t_field *tfield = *f_iter;
- t_type *ttype = get_true_type(tfield->get_type());
if (tfield->get_req() != t_field::T_REQUIRED) {
has_nonrequired_fields = true;
{code}
I'm not sure what is correct here for unnamed_oprot_seqid regarding
THRIFT-1165, it still warns for me:
{code}
diff --git a/compiler/cpp/src/generate/t_cpp_generator.cc
b/compiler/cpp/src/generate/t_cpp_generator.cc
index 0354a5f..6974f84 100755
--- a/compiler/cpp/src/generate/t_cpp_generator.cc
+++ b/compiler/cpp/src/generate/t_cpp_generator.cc
@@ -3164,8 +3164,7 @@ void
t_cpp_generator::generate_process_function(t_service* tservice,
out <<
indent() << "template <class Protocol_>" << endl;
}
- const bool unnamed_oprot_seqid = tfunction->is_oneway() &&
- !(gen_templates_ && !specialized);
+ const bool unnamed_oprot_seqid = tfunction->is_oneway();
out <<
"void " << tservice->get_name() << "Processor" << class_suffix << "::" <<
"process_" << tfunction->get_name() << "(" <<
{code}
depending on ifdefs, milliseconds var is unused:
{code}
diff --git a/lib/cpp/src/concurrency/Mutex.cpp
b/lib/cpp/src/concurrency/Mutex.cpp
index 0cfa0ad..332d415 100644
--- a/lib/cpp/src/concurrency/Mutex.cpp
+++ b/lib/cpp/src/concurrency/Mutex.cpp
@@ -154,6 +154,7 @@ class Mutex::impl {
PROFILE_MUTEX_NOT_LOCKED();
return false;
#else
+ (void)milliseconds;
// If pthread_mutex_timedlock isn't supported, the safest thing to do
// is just do a nonblocking trylock.
return trylock();
{code}
printf seems to be wrong type:
{code}
diff --git a/lib/cpp/src/transport/TFileTransport.cpp
b/lib/cpp/src/transport/TFileTransport.cpp
index 47dc328..351f950 100644
--- a/lib/cpp/src/transport/TFileTransport.cpp
+++ b/lib/cpp/src/transport/TFileTransport.cpp
@@ -68,6 +68,7 @@ using namespace apache::thrift::concurrency;
#define CLOCK_REALTIME 0
static int clock_gettime(int clk_id /*ignored*/, struct timespec *tp) {
struct timeval now;
+ (void)clk_id;
int rv = gettimeofday(&now, NULL);
if (rv != 0) {
@@ -783,7 +784,7 @@ bool TFileTransport::isEventCorrupted() {
} else if( ((offset_ + readState_.bufferPtr_ - 4)/chunkSize_) !=
((offset_ + readState_.bufferPtr_ + readState_.event_->eventSize_
- 1)/chunkSize_) ) {
// 3. size indicates that event crosses chunk boundary
- T_ERROR("Read corrupt event. Event crosses chunk boundary. Event size:%u
Offset:%lu",
+ T_ERROR("Read corrupt event. Event crosses chunk boundary. Event size:%u
Offset:%lli",
readState_.event_->eventSize_,
(offset_ + readState_.bufferPtr_ + 4));
@@ -825,7 +826,7 @@ void TFileTransport::performRecovery() {
readState_.resetState(readState_.lastDispatchPtr_);
currentEvent_ = NULL;
char errorMsg[1024];
- sprintf(errorMsg, "TFileTransport: log file corrupted at offset: %lu",
+ sprintf(errorMsg, "TFileTransport: log file corrupted at offset: %lli",
(offset_ + readState_.lastDispatchPtr_));
GlobalOutput(errorMsg);
{code}
> TNonblockingServer: Refactor to allow multiple IO Threads
> ---------------------------------------------------------
>
> Key: THRIFT-1442
> URL: https://issues.apache.org/jira/browse/THRIFT-1442
> Project: Thrift
> Issue Type: Improvement
> Components: C++ - Library
> Reporter: Dave Watson
> Assignee: Dave Watson
> Priority: Minor
> Fix For: 0.9
>
> Attachments:
> 0001-TNonblockingServer-Refactor-to-allow-multiple-IO-thr.patch,
> nonblocking_unsigned.patch
>
>
> From 04fc8cbc24c64e1b68a23a1df2c46056785c269d Mon Sep 17 00:00:00 2001
> From: Mark Rabkin <[email protected]>
> Date: Tue, 18 May 2010 22:16:09 +0000
> Subject: [PATCH 01/56] TNonblockingServer: Refactor to allow multiple IO
> threads, not just one
> davejwatson: This diff ads multiple IO threads to TNonblocking Server.
> We use it extensively, it's pretty well tested other than merge errors.
> This diff reverts THRIFT-1184, allowing re-use of an existing
> event base. With multiple IO threads, re-using a single event base doesn't
> make sense, so this seemed ok
> Summary:
> The diff creates multiple IO threads at startup -- the number of threads in
> this diff is fixed at server start and cannot change for simplicity. The
> first thread (id = 0) also doubles as the listen/accept thread, so there is
> still only a single thread doing accepts. The other IO threads listen only
> on their notification pipe and the actual connection sockets.
> Also, for simplicity, each accepted connection is simply assigned in a
> round-robin fashion to the next IO thread and lives on that IO thread
> permanently.
> Note that there are only trivial changes to TConnection to get it to work, so
> most of the tricky state transitions and buffer management are unchanged.
> There is still a single worker pool for processing tasks, so that code is
> unchanged as well.
> The trickiest part of the diff requiring the most careful review is the new
> synchronization code in the TNonblockingServer to manage the connection stack
> and counters of active/inactive connections. We now lock a mutex when
> incrementing/decrementing server counters, which is less than ideal for
> extremely high-QPS servers -- should I switch to atomic ops?
> One important change here is that while connections are created and
> initialized
> by the listen thread (IO thread #0), they may now be assigned to an event_base
> owned by a different IO thread. To work safely, TConnection::init() no longer
> calls setFlags() - instead, it immediately calls
> TConnection::notifyIOThread().
> This results in a notification-fd event in the correct event base, which then
> calls TConnection::transition() which sets up correct read flags. This means
> that a TConnection now calls notifyIOThread() once upon creation and
> assignment
> to its event_base, and thereafter after each processing call completes.
> TNonblocking server: Allow high-priority scheduler for IO threads
> Summary:
> Adds a boolean option to TNonblockingServer to use sched_setscheduler() to set
> a high scheduling priority for the IO thread(s) -- this is a POSIX api and
> should be safe on most operating systems.
> Please let me know if this is a known terrible idea, but we're experimenting
> to see if this helps the situation where we have 40 worker threads and 1 IO
> thread and the IO thread doesn't get scheduled nearly often enough.
> Reviewers: dreiss,edhall,putivsky
> Test Plan: Need to work with Ed to run his capacity-loadtesting scripts to
> verify performance.
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