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2017-03-17define Raindrops::TCP hash for TCP states freebsd
FreeBSD not only uses different values than Linux for TCP states, but different names, too. To ease writing portable code between the OSes, do more CPP metaprogramming via extconf.rb and define a common hash supported on both OSes. Putting all this in a hash allows for easy dumping and mapping in an OS-neutral way, since the actual TCP states are OS-independent.
2017-03-17tcp_info: support this struct under FreeBSD
Of course these fields are not portable between Linux and FreeBSD, but they should remain ABI-compatible for future versions of each OS. Tested on FreeBSD 10.3-RELEASE i386 TCP state names will be another problem...
2017-03-15TypedData C-API conversion
This provides some extra type safety if combined with other C extensions, as well as allowing us to account for memory usage of the HTTP parser in ObjectSpace. This requires Ruby 1.9.3+ and has remained a stable API since then. This will become officially supported when Ruby 2.3.0 is released later this month. This API has only been documented in doc/extension.rdoc (formerly README.EXT) in the Ruby source tree since April 2015, r50318
2017-03-01TCP_Info: custom documentation for #get!
While #get! is the same as the #initialize method, the former is public and called explicitly by folks wishing to reduce allocation overhead.
2017-03-01ext: fix documentation for C ext-defined classes
Defining the "Raindrops" class explicitly helps RDoc find subclasses for documentation, and ought to reduce the binary size slightly due to the removal of rb_intern calls. Furthermore, use "Socket" to ensure the base class for Raindrops::InetDiagSocket is documented properly in RDoc.
2016-07-29use HTTPS and move homepage to https://bogomips.org/raindrops/
While raindrops.bogomips.org exists, having extra subjectAltName entries is bloating the certificate. This will make it easier to mirror the homepage on Tor hidden services.
2016-07-28linux_inet_diag: GCC attribute format check
This helps the compiler detect bugs and quiets down a -Wsuggest-attribute=format warning
2016-02-25linux: tcp_listener_stats drops "true" placeholders
With invalid addresses specified which give no currently-bound address, we must avoid leaving placeholders ('true' objects) in our results. Clean up some shadowing "cur" while we're at it.
2016-02-24doc: update URLs and references
Neither the GCC nor libatomic_ops URLs are valid, anymore. Update them to the latest versions and ensure the URLs themselves are visible in documentation as links to external sites. Additionally, the current cgit installation on bogomips.org will soon be replaced by a CSS-free web-based viewer. Also, correct the reference to "LGPL-2.1+" while we're at it and add references to the nntp:// mail archives.
2015-07-14check for the existence of linux/tcp.h
The linux/tcp.h header may not exist on alternative libc implementations such as musl. Noticed-by: Doug Forster <doug.forster@gmail.com>
2015-01-14linux_inet_diag: fix Wshorten-64-to-32 warnings
POSIX and glibc 2.2+ declare the hostlen and servlen args of getnameinfo(3) to be socklen_t, not size_t, so favor socklen_t for those calculations. While we're at it, nlmsg_len is u32, too, so cast it as such to avoid the warning. Tested on clang version 3.5-1ubuntu1 on x86-64
2015-01-14linux_inet_diag: clarify *fprintf usage without GVL
A reviewer may wonder why fprintf is chosen instead of rb_warn, so make it clear we're outside of the GVL when spewing the warning message and cannot use most rb_* functions.
2015-01-13move mailing list to raindrops-public@bogomips.org
Existing subscribers on librelist will need to resubscribe since there's no published subscriber lists anywhere. The public-inbox + mlmmj setup on bogomips.org allows posting without subscription and offers downloadable archives via git. The lack of rsyncable archives on librelist nowadays and subscription-required nature of librelist are points against it. Repliers should Cc: all recipients (using the reply-all function of their mail client) since many readers are not subscribed. This project has never accepted or encouraged HTML email, but librelist accepted it. The bogomips.org mail server is configured to treat HTML mail as spam, so do not send HTML mail if you expect a response. Users who wish to subscribe may send a message to: raindrops-public+subscribe@bogomips.org Similarly, they may unsubscribe via: raindrops-public+unsubscribe@bogomips.org HTTP archives are available via: http://bogomips.org/raindrops-public/ ssoma users may also use: git://bogomips.org/raindrops-public (see README change) Old messages to the librelist addresses will continue to get routed to the new mailing list. ref: http://public-inbox.org/
2014-09-07linux_inet_diag: annotate memory freeing on diag errors
Clarify the code so memory leak alarms in reviewers eyes do not go off.
2014-02-18linux_inet_diag: fix Ruby 2.2 (dev) build
Do not define or use rb_thread_blocking_region if rb_thread_io_blocking_region is available. rb_thread_blocking_region is gone entirely in Ruby trunk.
2013-09-13Remove Scope IDs from IPv6 addresses.
Scoped ipv6 addresses are defined in rfc4007. Ruby doesn't support them yet and it's unknown whether it will (see http://bugs.ruby-lang.org/issues/8464). So we just remove scope ids. Tested with MRI and Rubinius.
2013-08-31linux_inet_diag: improve compatibility with newer GCs
RARRAY_PTR is expensive with GCs in Ruby 2.1.0dev and Rubinius, so use rb_ary_entry for non-performance critical paths. Eventually, RARRAY_AREF/RARRAY_ASET may be common, but for now, using rb_ary_entry should require the least cognitive overhead for a developer.
2013-08-28extconf: try harder for gcc atomics in i386-configured systems
__sync_lock_test_and_set might not be the correct check after all, but __sync_val_compare_and_swap probably is. At least this is what Ruby 2.0.0 uses to check and attempt -march=i486 on.
2013-04-20linux_inet_diag: better align listener_stats struct
Using an extra 4 bytes for the listener_stats should not significantly increase space usage, and it has the side benefit of making our code slightly smaller. $ ~/linux/scripts/bloat-o-meter before.so after.so add/remove: 0/0 grow/shrink: 1/2 up/down: 14/-32 (-18) function old new delta tcp_stats 392 406 +14 st_to_hash 195 187 -8 diag 763 739 -24
2013-04-11linux_inet_diag: avoid unnecessary sockaddr initialization
This initialization was unnecessary and avoids the following warning with -Wmissing-braces on gcc 4.7.2-5 on Debian testing: linux_inet_diag.c: In function ‘stats_for’: linux_inet_diag.c:192:8: warning: missing braces around initializer [-Wmissing-braces] linux_inet_diag.c:192:8: warning: (near initialization for ‘sa.ss’) [-Wmissing-braces]
2013-04-11Linux::TCP_Info: implement #get! instance method
This allows reusing existing Linux::TCP_Info objects to avoid generating garbage.
2013-04-11raindrops: favor configured processor count over online count
The runnable CPUs of a process may change over the lifetime of the process. So favor the count of configured processor count since that is more likely to be stable. We do not currently do not have special handling for hot-plugging/removal of CPUs on systems that may load raindrops in a single CPU state.
2012-05-12avoid warning for rb_thread_io_blocking_region
This is exported (visibly) under Ruby 1.9.3 but not in headers, so it was causing warnings.
2012-05-10extconf: better check for GCC atomic builtins
Attempting to test for CMPXCHG on x86 should allow this check to fail on i386 systems. We also won't need try_run as a result, enabling cross-compilation. The configure.in check in Ruby 1.9.3 does something similar and that's far more widely used than raindrops is.
2011-06-27doc: librelist.com => librelist.org
A non-profit TLD makes more sense for a Free Software project.
2011-06-24remove _XOPEN_SOURCE #define for FreeBSD
This appears to cause __BSD_VISIBLE to not be defined, which is required for MAP_ANON to be visible in sys/mman.h Thanks for Aleksandar Simic for the hint and Troex Nevelin for the bug report!
2011-06-16linux_inet_diag: avoid pointer aliasing warnings
No need to cast when C has handy unions. Maybe the compiler will be able to make better optimization choices here, but at least it'll be less noisy.
2011-03-21tcp_info: mark this as Linux-only
We can't even pull in linux/*.h headers to check for TCP_INFO.
2011-03-21extconf: use dir_config properly
dir_config may be used to build for libatomic_ops. The previous use of dir_config was from back when I didn't understand mkmf. This means you can now use: gem install raindrops -- --with-atomic_ops-dir=/usr/local If you libatomic_ops library was installed in /usr/local instead of /usr
2011-03-21inet_diag: no need to rely on sin6_addr internals
Seems to breaks under newer libc headers (on Debian sid).
2011-03-21extconf: remove check for rb_struct_alloc_noinit()
We no longer use it.
2011-03-21inet_diag: fix build under MRI 1.8.7
2011-03-21inet_diag: FD_CLOEXEC for inet_diag sockets by default
Very few programs can take advantage of inheriting FDs across exec() boundaries, and inet_diag sockets have no reason to be used in this way.
2011-03-21inet_diag: use rb_thread_io_blocking_region under 1.9.3dev
It can detect cross-thread close() calls
2011-03-17inet_diag: properly deal with INADDR_ANY binds
Oops :x This was totally broken with the all-listener filter.
2011-03-16doc: fix documentation for Raindrops::InetDiagSocket class
2011-03-12inet_diag: switch to inet_pton() for translation
getaddrinfo() needs to get a list of available interfaces from the kernel with every single call (since ipv6 could've been modprobed), so it's a waste of syscalls.
2011-03-12allow reusing netlink socket for inet_diag
No need to waste resources on creating/destroying a socket.
2011-03-12inet_diag: fix signedness warnings on 32-bit
I thought my compiler would be smarter :<
2011-03-12inet_diag: no need to specify family
The way we dump, we dump it all, it seems.
2011-03-12inet_diag: fix up IPv6 address stringification
This means we can read multiple addresses at once, even IPv6 ones.
2011-03-12inet_diag: fall back on IPv6 lookups
It's slow, but at least it works.
2011-03-12inet_diag: fold all_tcp_listener_stats into tcp_listener_stats
No reason to have an extra method. This also speeds up the multi-listener case for tcp_listener_stats since it avoids expensive sendmsg() syscalls.
2011-03-12inet_diag: small reorganization
2011-03-12inet_diag: do not set unblocking function
netlink is fast and predictable in response times, so permitting interrupts would just complicate things and lead to errors.
2011-03-12move st_table cleanup
Fewer places to check for errors, we think.
2011-03-12inet_diag: stricter IPv6 address parsing
Be stricter about invalid inputs.
2011-03-11linux: method for dumping all TCP listener stats
This is a work-in-progress and will probably be modified before the next release.
2011-03-11inet_diag: force the use of 32-bit counters
64-bit counters are unnecessarily large for tracking active or queued connections until we have IP_ROFLSCALE support :>
2011-03-11inet_diag: fixup braindamage from refactoring
Oops :x