Dear Gnutella fans,
I have just released version 1.1.14. Here are the changes:
# v 1.1.14 2018-10-04 [stable]
This release mostly improves the core routines and fixes a few important bugs.
Due to a bug in the usage of the RX buffers, we were not correctly parsing
data returned in "chunked" transfer-encoding by HTTP/1.1 servers. This
affected the UPnP logic.
The UPnP port unmapping done when the program shuts down was also not being
able to complete successfully because we were preventing the HTTP connection
from going on during the shutdown. Not critical because there is a lifetime
attached to all mappings, but always best to properly clean-up when leaving.
The algorithm used to pick random chunks to download was also revisited to
ensure a uniform selection within the whole file ranges that remain to be
fetched.
At startup time, the DHT code no longer expires keys when reloading data.
This could create crashes during the operation, with no other remedy than
to erase all the DHT database files manually to be able to recover!
The background task layer was also causing crashes (at exit time though)
because it was not recording whether it was running "user" code as opposed
to "kernel" code.
The SDBM code was also improved to allow concurrency and, in particular,
a "loose" iteration scheme which does not need to grab the database lock
during the whole iteration process. It is also possible to perform a
concurrent database rebuilding.
The thread runtime now has an improved deadlock detection engine, based
on a topological sort, that can definitely tell whether we are deadlocked.
When the deadlock is detected, we can also have more information about
the threads participating in that deadlock condition, to assist debugging.
On Windows, a bug in our mingw_dlerror() emulation caused it to always
fail once an error had been recorded, leading to un-decorated subsequent
stack traces, which really do not help on that platform!
There was also a concurrency bug in the processing of network queries.
Every time the library was rescanned, it could trigger a crash due to
a memory zone being declared private and was in fact shared between
threads. The crash occurred only when a query was received on the
Gnutella network whilst the library was rescanned.
The semi-reliable UDP layer TX side was revisited to maximize chances that
reliable messages get through completely.
The pattern matching code was revisited thoroughly. A new algorithm (2-Way
String Matching) now complements the Quick Search algorithm and an initial
benchmarking is done to compare our own matching routines with native libc
versions of strstr(), strlen(), strchr() and memchr(). The fastest routine
is then selected, to ensure optimal performances. There is also a unit-test
program ensuring proper semantics for the pattern search flags.
New Features:
- Added UDP scheduler message statistics by priority.
Improvements:
- [GTK2] Catch column resize events to persist widths quickly.
- Added "shutdown -x" to stop the program and continue session next time.
- Added --resume-session option to request explicit continuation.
- Improved pattern matching with new algorithm and runtime benchmarking.
- Persist current_peermode to restart in same mode after crash.
- Record compilation date and time for the crashlog.
- When running with no GUI, relax mem requirements to become ultra.
- Use minimum download chunk size to align requested download offsets.
- Added statistics for OOB hit notifications we process.
- Extensive improvements of the SDBM code to allow concurrency.
- Semi-reliable UDP TX layer now sends messages more aggressively.
- Reduce memory footprint of compiled patterns for short patterns.
Bug Fixes:
- No longer supply -lgthread-2.0 and -lresolv at link time.
- DHT: do not expire keys when reloading data at startup.
- Restored alphabetical listing of command options in the man page.
- The --use-poll argument was not mentioned in the manual page.
- UPnP: fixed XML logging.
- UPnP: was not correctly unmapping ports on servent shutdown.
- crash_time_internal(): protect against recursions in raw mode.
- file_info_retrieve(): must restore proper mtime for seeded files!
- filter_apply(): fixed suffix matching to allow whole match.
- http_data_ind(): could not process chunked data!
- iov_contiguous_size(): fixed destructive implementation.
- pslist_last_count(): fixed off-by-one error.
- recursive_scan_step_build_partial_table(): removed assertion.
- statx_opx(): use fabs() on double.
- word_vec_init(): zone cannot be private.
- zgc_subzone_defragment(): fixed improper assertion.
Under the Hood:
- Added hidden --no-build-version option.
- Added cstr_{b,f,l}cpy() routines to supplant g_strlcpy()
- Added strpcpy() which returns pointer to last copied trailing NUL.
- Added vmm_move() to move allocated VM regions to better places.
- Added G_FALL_THROUGH and fixed fall-through in switch cases.
- Added assertions in embedded lists for insertions / removals.
- Added new _mark_removed() and _link_mark_removed() for lists.
- Added is_ascii_ident() to check "\w" (word) in ASCII.
- Added ULONG_SWAP().
- Added op_roundup() and op_ptr_roundup() to round to upper aligned boundary.
- Added stats datapoint iterators and ability to remove outliers.
- Added G_FAST and G_NO_OPTIMIZE compilation directives.
- Added support for case-insensitive pattern matching.
- Added zone_info() to request zone allocation stats.
- Added p[s]list_shift_data() to remove head when NULL is valid data.
- Attempt relocation of hash tables arenas once in a while.
- Always capture and display the routine name in assertions.
- Disable parallel make execution in src/if.
- Fixed indentation for "if" and "else" leading to gcc 7.x warnings.
- Fixed logging fast assertion macros to allow just one string.
- Declare property choices[] array static and const!
- Optimize h_strnjoinv() with new strpcpy().
- Optimize memory for the gnet property init_list[].
- Optimized ctz64() to make it more obvious.
- Protect events and subscribers with magic tags.
- Removed http_buffer_t, completely obsoleted by pmsg_t.
- Show zalloc settings at startup and in "memory show options".
- Simplify code for read-lock upgrading and releasing.
- Strings now hold persistent "truncated" flags, for formatting.
- The watcher layer now auto-initializes.
- Use the Mersenne Twister as an additional random source.
- Use s_carp() instead of s_warning() for reporting "deep" important warnings.
- Use new vstrstr(), vstrlen(), vmemchr() and vstrchr() for optimized runtime.
- Windows: added ftruncate() emulation.
- Windows: fixed stat() and fstat(), with proper st_dev and st_ino fields.
- enamed hash_table_size() as hash_table_count() for consistency.
- When log messages are truncated, signal it visually with trailing "+++".
- VMM: use smarter core allocation under long-term strategy.
- anti_window_shift_hack(): hide normal output if not debugging.
- compat_longjmp(): record usage location and trace duplicate use.
- crash_invoke_inspector(): do not hardwire parent stdout / stderr.
- crash_restart(): always log the given message.
- crash_setcctime(): avoid using "time" as parameter name.
- crash_vmea_usage(): trace calling routine.
- entropy_seed(): also initialize random "previous entropy".
- fi_pick_chunk(): fixed selection of first chunk.
- fi_pick_chunk(): revisited random chunk selection algorithm.
- file_object_find(): loudly warn on file mismatch.
- get_iconv_charset_alias(): do not copy trailing ' ' in charset name.
- halloc_dump_stats_log(): was not logging realloc_via_xprealloc.
- hrealloc(): use vmm_move() and attempt to optimize VM space.
- log_handler(): emit stacktrace for glib, GTK or Pango warnings.
- mingw_dladdr(): use win32 DLP layer to check for new libraries.
- mingw_dlerror(): fixed to follow POSIX semantics.
- mingw_fix_stat(): trap ERROR_NOT_READY errors correctly.
- node_timer(): periodically try to move QRT arenas in VM space.
- parse.h: remove NON_NULL_PARAM() on function with assertions.
- rwlock_upgrade_from(): must only count read-locks from current thread.
- s_logv(): default log message max length raised to 3500 bytes.
- search_oob_pending_results(): randomly discard hits if too many.
- search_request_preprocess(): warn if TCP query contains a "QK".
- sequence_backward_iterator(): fixed case of one-way lists.
- stacktrace_pretty_filepath(): move to latest /src/.
- str_chr(): optimized to use vstrchr() if we can NUL-terminate.
- str_destroy(): ensure we do not call on a thread-private string.
- str_s2c(), str_2c(), str_dup(): handle already NUL-terminated strings.
- str_s2c(): ensure we do not call on a thread-private string.
- thread_suspend_others(): skip threads not marked as "valid".
- timestamp: be paranoid and protect against invalid time_t inputs.
- vmea_capacity(): changed semantics to report initial capacity.
- vmm_mmap_anonymous(): identify foreign regions more quickly.
- word_vec_make(): simplified code a bit.
- wrealloc(): if size does not change, attempt a wmove().
- xallocate(): be more aggressive when forcing VMM allocation.
- xmalloc: allocate via standalone VMM regions if possible.
- xmalloc: revisited plain VMM block allocation and freeing.
- xmalloc: use checksums to validate chunk headers.
- xreallocate(): ensure VMM space improves when reallocating.
- zcreate(): flag created zones as "user" ones.
- zgc(): only run for long-lived processes.
Enjoy!
Raphael
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