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Use counter helps to simplify logic around port and application free.
Port 'post' function introduced to simplify post execution of particular
function to original port engine's thread.
Write message queue is protected by mutex which makes port write operation
thread safe.
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To allow use port from different threads, the first step is to avoid using
port's memory pool for temporary allocations required to send data through
the port. Including but not limited by:
- buffers for data;
- send message structures;
- new mmap fd notifications;
It is still safe to use port memory pool for incoming buffers allocations
because recieve operation bound to single thread.
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Worker threads ports need to receive 'remove pid' message to properly handle
application process exit case and finish requests processed by particular
application worker. Main process send 'remove pid' notification to service
thread port only and this message must be 'proxied' to other running engines.
Separate memory pool created for this message. For each engine structure
required to post message to engine allocate from the pool using 'retain'
allocation method. After successfull post structure will be freed using
'release' method. To completely destroy poll one more 'release' should be
called to release initial reference count.
I'm afraid this should be simplified using good old malloc() and free() calls.
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Introducing event engine memory cache and using the cache for
nxt_sockaddr_t structures.
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It's not used anyway, but breaks building with musl.
This closes issue #5 on GitHub.
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Updating the router engines list before posting jobs to worker thread
engines is more logical because worker threads may exit after the posting.
However, the previous code was safe because an engine is freed by
the router main thread after worker its thread has exited.
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The router process exited abnormally on reconfiguration if number
of worker threads had been decreased on the previous reconfiguration.
Besides the list of router engines should be updated only after a new
configuration joints have been prepared for all engines.
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requested this.
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PHP SAPI tries to read body for POST request before registering
header-specific variables. For other methods, read_post_body() called by SAPI
after variables registration.
This closes #10 issue on GitHub.
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Application free ports is a queue (double linked list) protected with mutex.
After successfull request parsing, each router thread (1) tries to get port
from this list. If this list is empty, (2) start worker request posted to main
router thread. Another thread may release port between (1) and (2).
This fix adds an attempt to get port from free ports list at the beginning of
start worker action in main thread.
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Configuration and building example:
./configure
./configure python
./configure php
./configure go
make all
or
./configure
make nginext
./configure python
make python
./configure php
make php
./configure go
make go
Modules configuration options and building examples:
./configure python --module=python2 --config=python2.7-config
make python2
./configure php --module=php7 --config=php7.0-config
--lib-path=/usr/local/php7.0
make php7
./configure go --go=go1.6 --go-path=${HOME}/go1.6
make go1.6
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With specific timeout and buffer size settings.
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to the master process.
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To disable implicit completion, handler should reset msg->buf field.
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Usage:
1. Register handlers in incoming port with nxt_port_rpc_register_handler().
2. Use return value as a stream identifier for next nxt_port_socket_write().
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NXT_PORT_MSG_LAST - mark message as last;
NXT_PORT_MSG_CLOSE_FD - close fd right after send;
Type constants altered to include last flag for single buffer messages.
Last sign is critical for coming port RPC layer. Handlers unregistered on last
message. Create sync buffer is not convenient, extra parameter is better.
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were not updated with new parameters.
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nxt_req_conn_link_t still used for lookup connection by request id.
New nxt_req_app_link_t (ra) allocated from conn->mem_pool using mp_retain().
ra stored in app->requests if there is no free worker to process request.
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Used for connection mem pool cleanup, which can be used by buffers.
Used for port mem pool to safely destroy linked process.
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engine thread.
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