[core] chunk_file_pread() to wrap pread()

[multiple] shared code for struct chunk and mmap

chunkqueue_chunk_file_view()

reduces size of struct chunk

use mmap with mod_deflate libdeflate, if mmap available,
even when lighttpd not built w

[multiple] shared code for struct chunk and mmap

chunkqueue_chunk_file_view()

reduces size of struct chunk

use mmap with mod_deflate libdeflate, if mmap available,
even when lighttpd not built with --enable-mmap

avoid using mmap on temp files in chunkqueue (c->file.is_temp)
since pread() with a reasonable block size is typically as fast
or faster than mmap on files read sequentially and used only once,
especially when writing results to limited-size socket buffers
(and lighttpd temp files are, in most cases, by default about 1 MB)
(Exception: sometimes mmap is used for convenience or to fulfill
a requirement, e.g. one-shot libdeflate in mod_deflate)
(There are many factors which influence speed of mmap versus pread,
so this should not be construed as generic usage advice.)

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[core] 'struct log_error_st' -> 'log_error_st'

typedef redefinitions may cause issues with older compilers

(The intention behind the decls and defines were done to reduce the
number of unrelated l

[core] 'struct log_error_st' -> 'log_error_st'

typedef redefinitions may cause issues with older compilers

(The intention behind the decls and defines were done to reduce the
number of unrelated lines modified for the transition to fdlog_st)

x-ref:
https://trac.macports.org/ticket/63667
https://github.com/macports/macports-ports/pull/12658

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[core] clean up fdlog_st and log_error_st decls

typedef redefinitions may cause issues with older compilers

(The intention behind the decls and defines were done to reduce the
number of unrelated

[core] clean up fdlog_st and log_error_st decls

typedef redefinitions may cause issues with older compilers

(The intention behind the decls and defines were done to reduce the
number of unrelated lines modified for the transition to fdlog_st)

x-ref:
https://trac.macports.org/ticket/63667
https://github.com/macports/macports-ports/pull/12658

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[core] expose chunkqueue_remove_empty_chunks()

expose chunkqueue_remove_empty_chunks() for use in error recovery
when aborting a chunkqueue_append_buffer_open*()

[multiple] __attribute_nonnull__ now takes params

define __attribute_nonnull__(params) with params to match
recent changes in glibc development (targetting glibc 2.35 in Feb 2022)

x-ref:
new __at

[multiple] __attribute_nonnull__ now takes params

define __attribute_nonnull__(params) with params to match
recent changes in glibc development (targetting glibc 2.35 in Feb 2022)

x-ref:
new __attribute_nonnull__(params) conflicts with third-party
https://sourceware.org/bugzilla/show_bug.cgi?id=28425

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[core] splice() data from backends to tempfiles

splice() data from backends to tempfiles (where splice() is available);
reduce copying data to userspace when writing data to tempfiles

Note: splice(

[core] splice() data from backends to tempfiles

splice() data from backends to tempfiles (where splice() is available);
reduce copying data to userspace when writing data to tempfiles

Note: splice() on Linux returns EINVAL if target file has O_APPEND set
so lighttpd uses pwrite() (where available) when writing to tempfiles
(instead of lseek() + write(), or O_APPEND and write())

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[core] improve chunk buffer reuse from backends

improve oversized chunk buffer reuse from backends

[multiple] de-dup file and piped loggers (fixes #3101)

de-dup file and piped loggers for error logs and access logs

x-ref:
"RFE: de-dup file and piped loggers"
https://redmine.lighttpd.net/issu

[multiple] de-dup file and piped loggers (fixes #3101)

de-dup file and piped loggers for error logs and access logs

x-ref:
"RFE: de-dup file and piped loggers"
https://redmine.lighttpd.net/issues/3101

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[multiple] quiet coverity warnings

[core] remove server.upload-temp-file-size limit

previously undocumented server.upload-temp-file-size in lighttpd 1.4.38
preceded introduction of lighttpd streaming options in lighttpd 1.4.40
(serve

[core] remove server.upload-temp-file-size limit

previously undocumented server.upload-temp-file-size in lighttpd 1.4.38
preceded introduction of lighttpd streaming options in lighttpd 1.4.40
(server.stream-request-body and server.stream-response-body)

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[core] mark some chunk.h funcs attr cold

[core] chunkqueue_append_cq_range()

[multiple] chunkqueue_write_chunk()

create API in chunk.[ch] for writing a chunk to an fd

(pull similar code from mod_cgi and mod_webdav)

This new API is intended for use on request body input, wh

[multiple] chunkqueue_write_chunk()

create API in chunk.[ch] for writing a chunk to an fd

(pull similar code from mod_cgi and mod_webdav)

This new API is intended for use on request body input, which is
written to size-limited temporary files controlled by lighttpd and
written to files or pipes.

(network_backend_write() is for writing chunkqueues to sockets)

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[core] reuse large mem chunks (fix mem usage) (fixes #3033)

(thx flynn)

fix large memory usage for large file downloads from dynamic backends

reuse or release large memory chunks

x-ref:
"Memory

[core] reuse large mem chunks (fix mem usage) (fixes #3033)

(thx flynn)

fix large memory usage for large file downloads from dynamic backends

reuse or release large memory chunks

x-ref:
"Memory Growth with PUT and full buffered streams"
https://redmine.lighttpd.net/issues/3033

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[core] FILE_CHUNK can hold stat_cache_entry ref

[multiple] remove chunk file.start member

c->offset is now offset into file
c->file.length is end of octets to send (end pos + 1)
c->file.length - c->offset is num of octets to send

[core] reuse chunkqueue_compact_mem*()

[multiple] inline chunkqueue where always alloc'd

inline struct chunkqueue where always allocated in other structs

(memory locality)

[core] chunkqueue_{peek,read}_data(), squash

chunkqueue_peek_data(), chunkqueue_read_data(), chunkqueue_read_squash()
shared code for chunkqueue manipulation

[multiple] inline chunkqueue_length()

[mod_ssi] update chunk after shell output redirect

chunkqueue_update_file() to update size of file chunk after
redirecting shell output to file fd

[core] defer optimization to read small files

defer optimization to read small files into memory until after
response_start hooks have a chance to run, e.g. until after
mod_deflate chooses whether o

[core] defer optimization to read small files

defer optimization to read small files into memory until after
response_start hooks have a chance to run, e.g. until after
mod_deflate chooses whether or not to serve file from compressed
cache, if deflate.cache-dir is configured

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[core] disperse settings.h to appropriate headers

[core] C99 restrict on some base funcs

buffer.[ch], chunk.[ch], request.[ch], sock_addr.[ch]