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systemd/SOURCES/0239-sd-journal-cache-resul...

67 lines
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From c7919b02b504e2c0ccacf02c6f21f65c3f18ea4c Mon Sep 17 00:00:00 2001
From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Tue, 4 Apr 2023 16:43:44 +0900
Subject: [PATCH] sd-journal: cache results of parsing environment variables
(cherry picked from commit 9dfbae203e3afa500163bc46e0070c4cb2180aac)
Resolves: #2184929
---
src/libsystemd/sd-journal/journal-file.c | 34 +++++++++++++++---------
1 file changed, 22 insertions(+), 12 deletions(-)
diff --git a/src/libsystemd/sd-journal/journal-file.c b/src/libsystemd/sd-journal/journal-file.c
index cf86bab2dc..00de564499 100644
--- a/src/libsystemd/sd-journal/journal-file.c
+++ b/src/libsystemd/sd-journal/journal-file.c
@@ -296,27 +296,37 @@ JournalFile* journal_file_close(JournalFile *f) {
}
static bool keyed_hash_requested(void) {
+ static thread_local int cached = -1;
int r;
- r = getenv_bool("SYSTEMD_JOURNAL_KEYED_HASH");
- if (r >= 0)
- return r;
- if (r != -ENXIO)
- log_debug_errno(r, "Failed to parse $SYSTEMD_JOURNAL_KEYED_HASH environment variable, ignoring: %m");
+ if (cached < 0) {
+ r = getenv_bool("SYSTEMD_JOURNAL_KEYED_HASH");
+ if (r < 0) {
+ if (r != -ENXIO)
+ log_debug_errno(r, "Failed to parse $SYSTEMD_JOURNAL_KEYED_HASH environment variable, ignoring: %m");
+ cached = true;
+ } else
+ cached = r;
+ }
- return true;
+ return cached;
}
static bool compact_mode_requested(void) {
+ static thread_local int cached = -1;
int r;
- r = getenv_bool("SYSTEMD_JOURNAL_COMPACT");
- if (r >= 0)
- return r;
- if (r != -ENXIO)
- log_debug_errno(r, "Failed to parse $SYSTEMD_JOURNAL_COMPACT environment variable, ignoring: %m");
+ if (cached < 0) {
+ r = getenv_bool("SYSTEMD_JOURNAL_COMPACT");
+ if (r < 0) {
+ if (r != -ENXIO)
+ log_debug_errno(r, "Failed to parse $SYSTEMD_JOURNAL_COMPACT environment variable, ignoring: %m");
+ cached = true;
+ } else
+ cached = r;
+ }
- return true;
+ return cached;
}
static int journal_file_init_header(JournalFile *f, JournalFileFlags file_flags, JournalFile *template) {