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Artem Boldariev b4e8089694 DoH: Limit the number of delayed IO processing requests 
Previously, a function for continuing IO processing on the next UV
tick was introduced (http_do_bio_async()). The intention behind this
function was to ensure that http_do_bio() is eventually called at
least once in the future. However, the current implementation allows
queueing multiple such delayed requests needlessly. There is currently
no need for these excessive requests as http_do_bio() can requeue them
if needed. At the same time, each such request can lead to a memory
allocation, particularly in BIND 9.18.

This commit ensures that the number of enqueued delayed IO processing
requests never exceeds one in order to avoid potentially bombarding IO
threads with the delayed requests needlessly.

(cherry picked from commit 0e1b02868a)
2025-03-03 12:06:44 +02:00
..
include Reduce sizeof isc_sockaddr from 152 to 48 bytes 2025-01-22 14:12:38 +01:00
netmgr DoH: Limit the number of delayed IO processing requests 2025-03-03 12:06:44 +02:00
.gitignore [master] update gitignore files; use rev-parse to get srcid 2014-06-17 13:49:30 -07:00
aes.c Remove EVP_CIPHER_CTX_new() and EVP_CIPHER_CTX_free() shims 2022-03-02 10:49:47 +00:00
app.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
assertions.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
astack.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
backtrace.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
base32.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
base64.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
buffer.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
commandline.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
condition.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
counter.c Implement global limit for outgoing queries 2024-12-06 15:17:53 +00:00
crc64.c Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
dir.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
entropy.c De-duplicate __FILE__, __LINE__ 2022-10-17 16:00:26 +01:00
entropy_private.h Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
errno.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
errno2result.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
errno2result.h Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
error.c Include the function name when reporting unexpected errors 2022-10-17 16:00:27 +01:00
event.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
file.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
glob.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
hash.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
heap.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
hex.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
hmac.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
ht.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
httpd.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
interfaceiter.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
iterated_hash.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
jemalloc_shim.h Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
lex.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
lib.c remove isc_bind9 variable 2023-02-09 10:07:39 -08:00
log.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
Makefile.am Replace isc_fsaccess API with more secure file creation 2023-03-31 16:47:15 +02:00
managers.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
md.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
mem.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
mem_p.h Improve stability of the jemalloc workaround 2023-11-01 18:04:07 +01:00
meminfo.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
mutex.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
mutexblock.c Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
net.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
netaddr.c Reduce sizeof isc_sockaddr from 152 to 48 bytes 2025-01-22 14:12:38 +01:00
netmgr_p.h Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
netscope.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
nonce.c Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
openssl_shim.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
openssl_shim.h Remove unused <openssl/{hmac,engine}.h> headers from OpenSSL shims 2024-10-18 01:29:27 +00:00
os.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
os_p.h Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
parseint.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
picohttpparser.c Update picohttpparser.{c,h} with upstream repository 2024-12-08 12:30:11 +00:00
picohttpparser.h Update picohttpparser.{c,h} with upstream repository 2024-12-08 12:30:11 +00:00
pool.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
portset.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
quota.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
radix.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
random.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
ratelimiter.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
regex.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
region.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
resource.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
result.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
rwlock.c Fix a bug in isc_rwlock_trylock() 2025-01-07 13:30:26 +00:00
safe.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
serial.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
siphash.c Accept 'in=NULL' with 'inlen=0' in isc_{half}siphash24 2023-01-10 18:36:08 +11:00
sockaddr.c Reduce sizeof isc_sockaddr from 152 to 48 bytes 2025-01-22 14:12:38 +01:00
stats.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
stdio.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
stdtime.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
string.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
symtab.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
syslog.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
task.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
task_p.h Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
taskpool.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
thread.c Remove redundant #include <isc/strerr.h> 2022-10-17 16:08:28 +01:00
time.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
timer.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
timer_p.h Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
tls.c Provide more visibility into configuration errors 2024-11-26 12:24:41 +11:00
tls_p.h Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
tm.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
trampoline.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
trampoline_p.h Update the copyright information in all files in the repository 2022-01-11 09:05:02 +01:00
url.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00
utf8.c Remove redundant parentheses from the return statement 2024-11-19 16:06:16 +01:00