[PATCH 06/25] grep/pcre2: add GREP_PCRE2_DEBUG_MALLOC debug mode
From: Ævar Arnfjörð Bjarmason <hidden>
Date: 2021-02-03 03:29:43
Subsystem:
the rest · Maintainer:
Linus Torvalds
Add optional printing of PCREv2 allocations to stderr for a developer who manually changes the GREP_PCRE2_DEBUG_MALLOC definition to "1". This will be referenced a subsequent commit, and is generally useful to manually see what's going on with PCREv2 allocations while working on that code. Signed-off-by: Ævar Arnfjörð Bjarmason <redacted> --- grep.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/grep.c b/grep.c
index f96d86c929..7d262a23d8 100644
--- a/grep.c
+++ b/grep.c@@ -42,15 +42,25 @@ static struct grep_opt grep_defaults = { #ifdef USE_LIBPCRE2 static pcre2_general_context *pcre2_global_context; +#define GREP_PCRE2_DEBUG_MALLOC 0 static void *pcre2_malloc(PCRE2_SIZE size, MAYBE_UNUSED void *memory_data) { void *pointer = malloc(size); +#if GREP_PCRE2_DEBUG_MALLOC + static int count = 1; + fprintf(stderr, "PCRE2:%p -> #%02d: alloc(%lu)\n", pointer, count++, size); +#endif return pointer; } static void pcre2_free(void *pointer, MAYBE_UNUSED void *memory_data) { +#if GREP_PCRE2_DEBUG_MALLOC + static int count = 1; + if (pointer) + fprintf(stderr, "PCRE2:%p -> #%02d: free()\n", pointer, count++); +#endif free(pointer); } #endif
--
2.30.0.284.gd98b1dd5eaa7