Regex cache observability

[exim.git] / src / exim_monitor / em_log.c

diff --git a/src/exim_monitor/em_log.c b/src/exim_monitor/em_log.c
index 1e1dc7c04c424e76a5d437548ba1a22b920f7fa6..8d85c13f1d2128d6eb6c3961e4e8e70bff462b92 100644 (file)
--- a/src/exim_monitor/em_log.c
+++ b/src/exim_monitor/em_log.c
@@ -3,6 +3,7 @@
 *************************************************/
 
 /* Copyright (c) University of Cambridge 1995 - 2018 */
+/* Copyright (c) The Exim Maintainters 2021 - 2022 */
 /* See the file NOTICE for conditions of use and distribution. */
 
 /* This module contains code for scanning the main log,
@@ -229,7 +230,7 @@ if (LOG != NULL)
     uschar *p = buffer;
     rmark reset_point;
     int length = Ustrlen(buffer);
-    int i;
+    pcre2_match_data * md = pcre2_match_data_create(1, NULL);
 
     /* Skip totally blank lines (paranoia: there shouldn't be any) */
 
@@ -246,27 +247,25 @@ if (LOG != NULL)
     stripchart is the queue length, which is handled elsewhere, and the
     1st may the a size monitor. */
 
-    for (i = stripchart_varstart; i < stripchart_number; i++)
-      {
-      if (pcre_exec(stripchart_regex[i], NULL, CS buffer, length, 0, PCRE_EOPT,
-            NULL, 0) >= 0)
+    for (int i = stripchart_varstart; i < stripchart_number; i++)
+      if (pcre2_match(stripchart_regex[i], (PCRE2_SPTR)buffer, length,
+                       0, PCRE_EOPT, md, NULL) >= 0)
         stripchart_total[i]++;
-      }
 
     /* Munge the log entry and display shortened form on one line.
     We omit the date and show only the time. Remove any time zone offset.
     Take note of the presence of [pid]. */
 
-    if (pcre_exec(yyyymmdd_regex,NULL,CS buffer,length,0,PCRE_EOPT,NULL,0) >= 0)
+    if (pcre2_match(yyyymmdd_regex, (PCRE2_SPTR) buffer, length, 0, PCRE_EOPT,
+                     md, NULL) >= 0)
       {
       int pidlength = 0;
-      if ((buffer[20] == '+' || buffer[20] == '-') &&
-          isdigit(buffer[21]) && buffer[25] == ' ')
+      if (  (buffer[20] == '+' || buffer[20] == '-')
+         && isdigit(buffer[21]) && buffer[25] == ' ')
         memmove(buffer + 20, buffer + 26, Ustrlen(buffer + 26) + 1);
       if (buffer[20] == '[')
-        {
-        while (Ustrchr("[]0123456789", buffer[20+pidlength++]) != NULL);
-        }
+        while (Ustrchr("[]0123456789", buffer[20+pidlength++]) != NULL)
+         ;
       id = string_copyn(buffer + 20 + pidlength, MESSAGE_ID_LENGTH);
       show_log("%s", buffer+11);
       }
@@ -275,6 +274,7 @@ if (LOG != NULL)
       id = US"";
       show_log("%s", buffer);
       }
+    pcre2_match_data_free(md);
 
     /* Deal with frozen and unfrozen messages */
 
@@ -292,7 +292,7 @@ if (LOG != NULL)
     if ((p = Ustrstr(buffer, "==")) != NULL)
       {
       queue_item *qq = find_queue(id, queue_noop, 0);
-      if (qq != NULL)
+      if (qq)
         {
         dest_item *d;
         uschar *q, *r;