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For each slot, the number of total and used entries, as well as
the number of allocation requests and failures, are tracked.
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No functional changes.
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Removed code that would cause an endless loop, and removed condition
check that is always false. The first page in the slot list is
guaranteed to satisfy an allocation.
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When estimating the number of pages, do not count memory for slots.
In some cases this gives one extra usable memory page.
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No functional changes.
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On exit environment allocated from a pool is no longer available, leading
to a segmentation fault if, for example, a library tries to use it from
an atexit() handler.
Fix is to allocate environment via ngx_alloc() instead, and explicitly
free it using a pool cleanup handler if it's no longer used (e.g., on
configuration reload).
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In Perl 5.8.6 the default was switched to use putenv() when used as
embedded library unless "PL_use_safe_putenv = 0" is explicitly used
in the code. Therefore, for modern versions of Perl it is no longer
necessary to restore previous environment when calling perl_destruct().
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Found by PVS-Studio.
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Previously, an attempt to double free the starting page of the
free range was not detected.
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Previously, allocations smaller than min_size were shown as min_size.
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Removed redundant parentheses. No functional changes.
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It is not necessary to traverse *busy and link the *out when *out is NULL.
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On Linux, the rename syscall can be slow due to a global file system lock,
acquired for the entire rename operation, unless both old and new files are
in the same directory. To address this temporary files are now created
in the same directory as the expected resulting cache file when using the
"use_temp_path=off" parameter.
This change mostly reverts 99639bfdfa2a and 3281de8142f5, restoring the
behaviour as of a9138c35120d (with minor changes).
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Files are considered the same if the path used by nginx during parsing matches.
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With this change it is now possible to load modules compiled without
the "--with-http_ssl_module" configure option into nginx binary compiled
with it, and vice versa (if a module doesn't use ssl-specific functions),
assuming both use the "--with-compat" option.
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With this change it is now possible to load modules compiled without
the "--with-file-aio" configure option into nginx binary compiled with it,
and vice versa, assuming both use the "--with-compat" option.
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With this change it is now possible to load modules compiled without
the "--with-threads" configure option into nginx binary compiled with it,
and vice versa (if a module does not use thread-specific functions),
assuming both use the "--with-compat" option.
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Linux can return AF_UNIX sockaddrs with partially filled sun_path,
resulting in spurious comparison failures and failed binary upgrades.
Added proper checking of the lengths provided.
Reported by Jan Seda,
http://mailman.nginx.org/pipermail/nginx-devel/2016-September/008832.html.
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Previously, user access bits were always set to "rw" unconditionally,
even with "user:r" explicitly specified. With this change we only add
default user access bits (0600) if they weren't set explicitly.
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The new parameters "manager_files", "manager_sleep"
and "manager_threshold" were added to proxy_cache_path
and friends.
Note that ngx_path_manager_pt was changed to return ngx_msec_t
instead of time_t (API change).
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c->pool is not destroyed here since c52408583801.
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Removed (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT)
from the signature accordingly.
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Removed NGX_HAVE_REUSEPORT from the signature accordingly.
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The IPV6_V6ONLY macro is now checked only while parsing appropriate flag
and when using the macro.
The ipv6only field in listen structures is always initialized to 1,
even if not supported on a given platform. This is expected to prevent
a module compiled without IPV6_V6ONLY from accidentally creating dual
sockets if loaded into main binary with proper IPV6_V6ONLY support.
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HTTP/2-specific fields in structures are now available unconditionally.
Removed NGX_HTTP_V2 from the signature accordingly.
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There is no need to save these two bits as they are wasted anyway.
Removed NGX_HTTP_DEGRADATION from the signature accordingly.
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When enabled, some structures are padded to be size compatible
with their NGINX Plus versions.
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It keeps the actual state value of a DNS SRV subrequest
and can be used to report a more detailed log for
failed SRV records.
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All the errors that prevent loading configuration must be printed on the "emerg"
log level. Previously, nginx might silently fail to load configuration in some
cases as the default log level is "error".
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This prevents theoretical resource leak, since those threads are never joined.
Found with ThreadSanitizer.
Signed-off-by: Piotr Sikora <piotrsikora@google.com>
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Found with UndefinedBehaviorSanitizer.
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The macro was unused since 0.7.44.
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This reduces the number of moving parts in ABI compatibility checks.
Additionally, it also allows to use OpenSSL in FIPS mode while still
using md5 for non-security tasks.
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Also, removed practically unused flag accept_context_updated from
ngx_connection_t.
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