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There is no restrictions on configration size and using segmented shared memory
only doubles memory usage because to parse configration on router side,
it needs to be 'plain' e. g. located in single continous memory buffer.
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This fixes undefined behaviour due to array over-read if an unknown parameter
is specified in an uidmap, a gidmap, or a php target object.
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Thanks to 洪志道 (Hong Zhi Dao).
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This is partially related to #434 issue on Github.
Thanks to 洪志道 (Hong Zhi Dao).
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Racing conditions reproduced periodically on test_python_process_switch.
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Currently, the router exits without waiting for the worker threads to stop.
There is a short gap between the runtime memory pool's free and the exit, during
which a worker thread may try to access a runtime structure. In turn, this may
cause a crash. For now, it is better to keep this memory allocated.
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Using this function in all language modules helps to avoid code duplication
and reduce the size of future patches.
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Correct value for non-initialized file descriptor is -1, because most of the
checks in libunit compares file descriptor with -1 before performing an
action. Using 0 as default value, may cause to close file descriptor #0, this
may affect application logic.
It is not required to list this patch in changelog because impact is not seen
by end users.
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The nxt_assert macro uses nxt_thread_context, which caused the following linker
error when using it in the library:
ld: illegal thread local variable reference to regular symbol
_nxt_thread_context for architecture x86_64
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This is another attempt to fix the following error message:
BlockingIOError: [Errno 11] write could not complete without blocking
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Incorrect check prevents Unit to start without modules.
This issue was introduced in 4a3ec07f4b19.
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Previously, the log message callback used a generic log function, that relied on the process time cache.
Since there were no time update calls in the application processes, all log lines were printed with the
same time, usually correlated with the process start.
Now, a non-cached logging function from libunit is used.
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This makes log format used in libunit consistent with the daemon, where milliseconds are printed only in the
debug log level.
Currently a compile time switch is used, since there's no support for runtime changing of a log level for now.
But in the future this should be a runtime condition, similar to nxt_log_time_handler().
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Matching 'start' and 'end' position now adjusted to avoid false matching.
This is related to #434 issue on Github.
Thanks to 洪志道 (Hong Zhi Dao).
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The lifespan of a listening socket is longer than both router
configuration's and temporary router configuration's lifespan,
so the sockets should be stored in persistent queues. Safety
is ensured by the fact that the router processes only one new
configuration at any time.
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opcache_get_status() returns array, so square brackets
should be used to access "opcache_enabled" value.
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Now the configure script appends /server to --lib-path argument.
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The process abstraction has changed to:
setup(task, process)
start(task, process_data)
prefork(task, process, mp)
The prefork() occurs in the main process right before fork.
The file src/nxt_main_process.c is completely free of process
specific logic.
The creation of a process now supports a PROCESS_CREATED state. The
The setup() function of each process can set its state to either
created or ready. If created, a MSG_PROCESS_CREATED is sent to main
process, where external setup can be done (required for rootfs under
container).
The core processes (discovery, controller and router) doesn't need
external setup, then they all proceeds to their start() function
straight away.
In the case of applications, the load of the module happens at the
process setup() time and The module's init() function has changed
to be the start() of the process.
The module API has changed to:
setup(task, process, conf)
start(task, data)
As a direct benefit of the PROCESS_CREATED message, the clone(2) of
processes using pid namespaces now doesn't need to create a pipe
to make the child block until parent setup uid/gid mappings nor it
needs to receive the child pid.
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This aims to avoid stream id clashes after router restart.
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This is required to handle REMOVE_PID messages if router engine
initialization is incomplete.
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After a process exits, all ports linked to it from other processes
should be closed. All unsent file descriptors in port queue, marked as
"close after send", should be closed to avoid resource leakage.
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Thanks to hongzhidao.
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According to the C standard, pointer arguments passed to memcpy() calls shall
still have valid values. NULL is considered as invalid.
Found with GCC Static Analyzer.
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This fixes building with GCC 10, which is default to -fno-common.
See: https://gcc.gnu.org/gcc-10/porting_to.html
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This should resolve some static analyzers warnings.
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