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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-14 13:40:54 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-14 13:40:54 +0000
commit317c0644ccf108aa23ef3fd8358bd66c2840bfc0 (patch)
treec417b3d25c86b775989cb5ac042f37611b626c8a /deps/jemalloc/src/log.c
parentInitial commit. (diff)
downloadredis-317c0644ccf108aa23ef3fd8358bd66c2840bfc0.tar.xz
redis-317c0644ccf108aa23ef3fd8358bd66c2840bfc0.zip
Adding upstream version 5:7.2.4.upstream/5%7.2.4
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'deps/jemalloc/src/log.c')
-rw-r--r--deps/jemalloc/src/log.c78
1 files changed, 78 insertions, 0 deletions
diff --git a/deps/jemalloc/src/log.c b/deps/jemalloc/src/log.c
new file mode 100644
index 0000000..778902f
--- /dev/null
+++ b/deps/jemalloc/src/log.c
@@ -0,0 +1,78 @@
+#include "jemalloc/internal/jemalloc_preamble.h"
+#include "jemalloc/internal/jemalloc_internal_includes.h"
+
+#include "jemalloc/internal/log.h"
+
+char log_var_names[JEMALLOC_LOG_VAR_BUFSIZE];
+atomic_b_t log_init_done = ATOMIC_INIT(false);
+
+/*
+ * Returns true if we were able to pick out a segment. Fills in r_segment_end
+ * with a pointer to the first character after the end of the string.
+ */
+static const char *
+log_var_extract_segment(const char* segment_begin) {
+ const char *end;
+ for (end = segment_begin; *end != '\0' && *end != '|'; end++) {
+ }
+ return end;
+}
+
+static bool
+log_var_matches_segment(const char *segment_begin, const char *segment_end,
+ const char *log_var_begin, const char *log_var_end) {
+ assert(segment_begin <= segment_end);
+ assert(log_var_begin < log_var_end);
+
+ ptrdiff_t segment_len = segment_end - segment_begin;
+ ptrdiff_t log_var_len = log_var_end - log_var_begin;
+ /* The special '.' segment matches everything. */
+ if (segment_len == 1 && *segment_begin == '.') {
+ return true;
+ }
+ if (segment_len == log_var_len) {
+ return strncmp(segment_begin, log_var_begin, segment_len) == 0;
+ } else if (segment_len < log_var_len) {
+ return strncmp(segment_begin, log_var_begin, segment_len) == 0
+ && log_var_begin[segment_len] == '.';
+ } else {
+ return false;
+ }
+}
+
+unsigned
+log_var_update_state(log_var_t *log_var) {
+ const char *log_var_begin = log_var->name;
+ const char *log_var_end = log_var->name + strlen(log_var->name);
+
+ /* Pointer to one before the beginning of the current segment. */
+ const char *segment_begin = log_var_names;
+
+ /*
+ * If log_init done is false, we haven't parsed the malloc conf yet. To
+ * avoid log-spew, we default to not displaying anything.
+ */
+ if (!atomic_load_b(&log_init_done, ATOMIC_ACQUIRE)) {
+ return LOG_INITIALIZED_NOT_ENABLED;
+ }
+
+ while (true) {
+ const char *segment_end = log_var_extract_segment(
+ segment_begin);
+ assert(segment_end < log_var_names + JEMALLOC_LOG_VAR_BUFSIZE);
+ if (log_var_matches_segment(segment_begin, segment_end,
+ log_var_begin, log_var_end)) {
+ atomic_store_u(&log_var->state, LOG_ENABLED,
+ ATOMIC_RELAXED);
+ return LOG_ENABLED;
+ }
+ if (*segment_end == '\0') {
+ /* Hit the end of the segment string with no match. */
+ atomic_store_u(&log_var->state,
+ LOG_INITIALIZED_NOT_ENABLED, ATOMIC_RELAXED);
+ return LOG_INITIALIZED_NOT_ENABLED;
+ }
+ /* Otherwise, skip the delimiter and continue. */
+ segment_begin = segment_end + 1;
+ }
+}